/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/poker-hand-trans.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-29289db [2021-06-05 04:50:52,899 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-05 04:50:52,902 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-05 04:50:52,940 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-05 04:50:53,012 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-05 04:50:53,013 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-05 04:50:53,013 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-05 04:50:53,014 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-06-05 04:50:53,048 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-05 04:50:53,048 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-05 04:50:53,049 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-05 04:50:53,049 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-05 04:50:53,051 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-05 04:50:53,051 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-05 04:50:53,051 INFO L138 SettingsManager]: * Use SBE=true [2021-06-05 04:50:53,052 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-05 04:50:53,052 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-05 04:50:53,052 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-05 04:50:53,053 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-05 04:50:53,053 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-05 04:50:53,053 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-05 04:50:53,053 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-05 04:50:53,053 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-05 04:50:53,053 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-05 04:50:53,054 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-05 04:50:53,054 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-05 04:50:53,054 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-05 04:50:53,054 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-05 04:50:53,054 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-05 04:50:53,054 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-05 04:50:53,055 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-05 04:50:53,055 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 04:50:53,055 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-05 04:50:53,055 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-05 04:50:53,055 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-05 04:50:53,055 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-05 04:50:53,055 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-05 04:50:53,056 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-05 04:50:53,056 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-05 04:50:53,056 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-05 04:50:53,384 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-05 04:50:53,412 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-05 04:50:53,415 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-05 04:50:53,416 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-05 04:50:53,417 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-05 04:50:53,418 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/poker-hand-trans.wvr.bpl [2021-06-05 04:50:53,418 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/poker-hand-trans.wvr.bpl' [2021-06-05 04:50:53,561 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-05 04:50:53,563 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-05 04:50:53,563 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-05 04:50:53,564 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-05 04:50:53,564 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-05 04:50:53,579 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "poker-hand-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 04:50:53" (1/1) ... [2021-06-05 04:50:53,605 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "poker-hand-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 04:50:53" (1/1) ... [2021-06-05 04:50:53,613 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-05 04:50:53,615 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-05 04:50:53,615 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-05 04:50:53,616 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-05 04:50:53,623 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "poker-hand-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 04:50:53" (1/1) ... [2021-06-05 04:50:53,623 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "poker-hand-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 04:50:53" (1/1) ... [2021-06-05 04:50:53,636 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "poker-hand-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 04:50:53" (1/1) ... [2021-06-05 04:50:53,637 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "poker-hand-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 04:50:53" (1/1) ... [2021-06-05 04:50:53,653 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "poker-hand-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 04:50:53" (1/1) ... [2021-06-05 04:50:53,657 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "poker-hand-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 04:50:53" (1/1) ... [2021-06-05 04:50:53,660 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "poker-hand-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 04:50:53" (1/1) ... [2021-06-05 04:50:53,663 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-05 04:50:53,664 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-05 04:50:53,664 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-05 04:50:53,664 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-05 04:50:53,671 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "poker-hand-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 04:50:53" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 04:50:53,751 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-05 04:50:53,752 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-05 04:50:53,752 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-05 04:50:53,752 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-05 04:50:53,752 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-05 04:50:53,753 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-05 04:50:53,753 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-05 04:50:53,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-05 04:50:53,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-05 04:50:53,753 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-06-05 04:50:53,753 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-06-05 04:50:53,755 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-06-05 04:50:53,755 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-05 04:50:54,614 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-05 04:50:54,615 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-06-05 04:50:54,616 INFO L202 PluginConnector]: Adding new model poker-hand-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 04:50:54 BoogieIcfgContainer [2021-06-05 04:50:54,616 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-05 04:50:54,618 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-05 04:50:54,619 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-05 04:50:54,621 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-05 04:50:54,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "poker-hand-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 04:50:53" (1/2) ... [2021-06-05 04:50:54,623 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48f386c8 and model type poker-hand-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 04:50:54, skipping insertion in model container [2021-06-05 04:50:54,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "poker-hand-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 04:50:54" (2/2) ... [2021-06-05 04:50:54,627 INFO L111 eAbstractionObserver]: Analyzing ICFG poker-hand-trans.wvr.bpl [2021-06-05 04:50:54,632 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-05 04:50:54,634 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-05 04:50:54,635 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-05 04:50:54,635 INFO L510 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-05 04:50:54,682 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-06-05 04:50:54,701 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-05 04:50:54,725 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 04:50:54,725 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 04:50:54,725 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 04:50:54,725 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 04:50:54,729 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 04:50:54,730 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 04:50:54,730 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 04:50:54,730 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-05 04:50:54,740 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 35 places, 37 transitions, 98 flow [2021-06-05 04:50:54,768 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 191 states, 189 states have (on average 4.455026455026455) internal successors, (842), 190 states have internal predecessors, (842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:50:54,772 INFO L276 IsEmpty]: Start isEmpty. Operand has 191 states, 189 states have (on average 4.455026455026455) internal successors, (842), 190 states have internal predecessors, (842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:50:54,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-06-05 04:50:54,783 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:50:54,784 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:50:54,784 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:50:54,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:50:54,789 INFO L82 PathProgramCache]: Analyzing trace with hash 1233644461, now seen corresponding path program 1 times [2021-06-05 04:50:54,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:50:54,796 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562558987] [2021-06-05 04:50:54,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:50:54,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:50:55,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:50:55,366 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:50:55,366 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562558987] [2021-06-05 04:50:55,367 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562558987] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:50:55,367 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:50:55,368 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 04:50:55,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083043929] [2021-06-05 04:50:55,371 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 04:50:55,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:50:55,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 04:50:55,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-05 04:50:55,384 INFO L87 Difference]: Start difference. First operand has 191 states, 189 states have (on average 4.455026455026455) internal successors, (842), 190 states have internal predecessors, (842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:50:55,746 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2021-06-05 04:50:55,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:50:55,805 INFO L93 Difference]: Finished difference Result 319 states and 1217 transitions. [2021-06-05 04:50:55,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 04:50:55,806 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-06-05 04:50:55,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:50:55,818 INFO L225 Difference]: With dead ends: 319 [2021-06-05 04:50:55,818 INFO L226 Difference]: Without dead ends: 304 [2021-06-05 04:50:55,819 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 416.1ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 04:50:55,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2021-06-05 04:50:55,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 201. [2021-06-05 04:50:55,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 200 states have (on average 4.41) internal successors, (882), 200 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:50:55,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 882 transitions. [2021-06-05 04:50:55,919 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 882 transitions. Word has length 14 [2021-06-05 04:50:55,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:50:55,920 INFO L482 AbstractCegarLoop]: Abstraction has 201 states and 882 transitions. [2021-06-05 04:50:55,920 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:50:55,920 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 882 transitions. [2021-06-05 04:50:55,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-06-05 04:50:55,923 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:50:55,923 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:50:55,923 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-05 04:50:55,923 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:50:55,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:50:55,924 INFO L82 PathProgramCache]: Analyzing trace with hash 2024028845, now seen corresponding path program 2 times [2021-06-05 04:50:55,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:50:55,924 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191649790] [2021-06-05 04:50:55,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:50:55,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:50:56,194 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 52 [2021-06-05 04:50:56,418 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 55 [2021-06-05 04:50:56,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:50:56,443 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:50:56,443 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191649790] [2021-06-05 04:50:56,443 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191649790] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:50:56,443 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:50:56,443 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 04:50:56,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19358876] [2021-06-05 04:50:56,445 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 04:50:56,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:50:56,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 04:50:56,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-05 04:50:56,446 INFO L87 Difference]: Start difference. First operand 201 states and 882 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:50:56,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:50:56,778 INFO L93 Difference]: Finished difference Result 346 states and 1298 transitions. [2021-06-05 04:50:56,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 04:50:56,778 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-06-05 04:50:56,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:50:56,782 INFO L225 Difference]: With dead ends: 346 [2021-06-05 04:50:56,782 INFO L226 Difference]: Without dead ends: 331 [2021-06-05 04:50:56,783 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 473.2ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 04:50:56,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2021-06-05 04:50:56,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 212. [2021-06-05 04:50:56,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 211 states have (on average 4.322274881516588) internal successors, (912), 211 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:50:56,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 912 transitions. [2021-06-05 04:50:56,808 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 912 transitions. Word has length 14 [2021-06-05 04:50:56,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:50:56,808 INFO L482 AbstractCegarLoop]: Abstraction has 212 states and 912 transitions. [2021-06-05 04:50:56,809 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:50:56,809 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 912 transitions. [2021-06-05 04:50:56,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-06-05 04:50:56,815 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:50:56,815 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:50:56,816 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-05 04:50:56,816 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:50:56,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:50:56,817 INFO L82 PathProgramCache]: Analyzing trace with hash -1840634711, now seen corresponding path program 3 times [2021-06-05 04:50:56,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:50:56,818 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339195634] [2021-06-05 04:50:56,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:50:56,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:50:57,081 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2021-06-05 04:50:57,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:50:57,109 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:50:57,109 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339195634] [2021-06-05 04:50:57,110 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339195634] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:50:57,110 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:50:57,110 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 04:50:57,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349524477] [2021-06-05 04:50:57,111 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 04:50:57,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:50:57,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 04:50:57,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-05 04:50:57,113 INFO L87 Difference]: Start difference. First operand 212 states and 912 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:50:57,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:50:57,426 INFO L93 Difference]: Finished difference Result 378 states and 1427 transitions. [2021-06-05 04:50:57,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 04:50:57,427 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-06-05 04:50:57,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:50:57,430 INFO L225 Difference]: With dead ends: 378 [2021-06-05 04:50:57,430 INFO L226 Difference]: Without dead ends: 363 [2021-06-05 04:50:57,431 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 353.7ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 04:50:57,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2021-06-05 04:50:57,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 219. [2021-06-05 04:50:57,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 218 states have (on average 4.330275229357798) internal successors, (944), 218 states have internal predecessors, (944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:50:57,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 944 transitions. [2021-06-05 04:50:57,454 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 944 transitions. Word has length 14 [2021-06-05 04:50:57,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:50:57,455 INFO L482 AbstractCegarLoop]: Abstraction has 219 states and 944 transitions. [2021-06-05 04:50:57,455 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:50:57,455 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 944 transitions. [2021-06-05 04:50:57,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-06-05 04:50:57,456 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:50:57,456 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:50:57,456 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-05 04:50:57,456 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:50:57,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:50:57,457 INFO L82 PathProgramCache]: Analyzing trace with hash -867555397, now seen corresponding path program 4 times [2021-06-05 04:50:57,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:50:57,457 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803445509] [2021-06-05 04:50:57,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:50:57,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:50:57,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:50:57,696 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:50:57,697 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803445509] [2021-06-05 04:50:57,697 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803445509] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:50:57,697 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:50:57,698 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 04:50:57,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970370159] [2021-06-05 04:50:57,698 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 04:50:57,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:50:57,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 04:50:57,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-05 04:50:57,699 INFO L87 Difference]: Start difference. First operand 219 states and 944 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:50:58,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:50:58,001 INFO L93 Difference]: Finished difference Result 369 states and 1403 transitions. [2021-06-05 04:50:58,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 04:50:58,002 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-06-05 04:50:58,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:50:58,005 INFO L225 Difference]: With dead ends: 369 [2021-06-05 04:50:58,005 INFO L226 Difference]: Without dead ends: 354 [2021-06-05 04:50:58,005 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 320.6ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 04:50:58,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2021-06-05 04:50:58,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 231. [2021-06-05 04:50:58,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 230 states have (on average 4.243478260869566) internal successors, (976), 230 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:50:58,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 976 transitions. [2021-06-05 04:50:58,037 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 976 transitions. Word has length 14 [2021-06-05 04:50:58,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:50:58,037 INFO L482 AbstractCegarLoop]: Abstraction has 231 states and 976 transitions. [2021-06-05 04:50:58,037 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:50:58,037 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 976 transitions. [2021-06-05 04:50:58,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-06-05 04:50:58,038 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:50:58,038 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:50:58,038 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-05 04:50:58,039 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:50:58,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:50:58,039 INFO L82 PathProgramCache]: Analyzing trace with hash 922889575, now seen corresponding path program 5 times [2021-06-05 04:50:58,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:50:58,039 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285057999] [2021-06-05 04:50:58,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:50:58,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:50:58,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:50:58,266 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:50:58,266 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285057999] [2021-06-05 04:50:58,267 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285057999] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:50:58,267 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:50:58,267 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 04:50:58,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960677402] [2021-06-05 04:50:58,267 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 04:50:58,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:50:58,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 04:50:58,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-05 04:50:58,269 INFO L87 Difference]: Start difference. First operand 231 states and 976 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:50:58,570 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2021-06-05 04:50:58,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:50:58,610 INFO L93 Difference]: Finished difference Result 348 states and 1312 transitions. [2021-06-05 04:50:58,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 04:50:58,610 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-06-05 04:50:58,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:50:58,613 INFO L225 Difference]: With dead ends: 348 [2021-06-05 04:50:58,613 INFO L226 Difference]: Without dead ends: 333 [2021-06-05 04:50:58,613 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 356.1ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 04:50:58,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2021-06-05 04:50:58,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 233. [2021-06-05 04:50:58,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 232 states have (on average 4.262931034482759) internal successors, (989), 232 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:50:58,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 989 transitions. [2021-06-05 04:50:58,623 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 989 transitions. Word has length 14 [2021-06-05 04:50:58,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:50:58,623 INFO L482 AbstractCegarLoop]: Abstraction has 233 states and 989 transitions. [2021-06-05 04:50:58,623 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:50:58,623 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 989 transitions. [2021-06-05 04:50:58,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-06-05 04:50:58,624 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:50:58,624 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:50:58,624 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-05 04:50:58,625 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:50:58,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:50:58,625 INFO L82 PathProgramCache]: Analyzing trace with hash 594755113, now seen corresponding path program 6 times [2021-06-05 04:50:58,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:50:58,625 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373193404] [2021-06-05 04:50:58,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:50:58,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:50:58,988 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2021-06-05 04:50:59,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:50:59,023 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:50:59,023 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373193404] [2021-06-05 04:50:59,023 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373193404] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:50:59,023 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:50:59,023 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 04:50:59,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794544775] [2021-06-05 04:50:59,024 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 04:50:59,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:50:59,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 04:50:59,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-05 04:50:59,025 INFO L87 Difference]: Start difference. First operand 233 states and 989 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:50:59,331 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2021-06-05 04:50:59,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:50:59,371 INFO L93 Difference]: Finished difference Result 358 states and 1349 transitions. [2021-06-05 04:50:59,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 04:50:59,372 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-06-05 04:50:59,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:50:59,374 INFO L225 Difference]: With dead ends: 358 [2021-06-05 04:50:59,374 INFO L226 Difference]: Without dead ends: 343 [2021-06-05 04:50:59,374 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 491.7ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 04:50:59,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2021-06-05 04:50:59,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 233. [2021-06-05 04:50:59,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 232 states have (on average 4.262931034482759) internal successors, (989), 232 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:50:59,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 989 transitions. [2021-06-05 04:50:59,384 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 989 transitions. Word has length 14 [2021-06-05 04:50:59,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:50:59,384 INFO L482 AbstractCegarLoop]: Abstraction has 233 states and 989 transitions. [2021-06-05 04:50:59,384 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:50:59,385 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 989 transitions. [2021-06-05 04:50:59,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-06-05 04:50:59,385 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:50:59,386 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:50:59,386 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-05 04:50:59,386 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:50:59,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:50:59,386 INFO L82 PathProgramCache]: Analyzing trace with hash 1067380313, now seen corresponding path program 1 times [2021-06-05 04:50:59,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:50:59,387 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259385698] [2021-06-05 04:50:59,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:50:59,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:50:59,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:50:59,401 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:50:59,401 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259385698] [2021-06-05 04:50:59,402 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259385698] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:50:59,402 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:50:59,402 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 04:50:59,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109262813] [2021-06-05 04:50:59,402 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 04:50:59,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:50:59,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 04:50:59,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 04:50:59,403 INFO L87 Difference]: Start difference. First operand 233 states and 989 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:50:59,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:50:59,410 INFO L93 Difference]: Finished difference Result 268 states and 1130 transitions. [2021-06-05 04:50:59,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 04:50:59,410 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-06-05 04:50:59,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:50:59,412 INFO L225 Difference]: With dead ends: 268 [2021-06-05 04:50:59,412 INFO L226 Difference]: Without dead ends: 268 [2021-06-05 04:50:59,413 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 04:50:59,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2021-06-05 04:50:59,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 262. [2021-06-05 04:50:59,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 261 states have (on average 4.2796934865900385) internal successors, (1117), 261 states have internal predecessors, (1117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:50:59,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 1117 transitions. [2021-06-05 04:50:59,421 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 1117 transitions. Word has length 15 [2021-06-05 04:50:59,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:50:59,422 INFO L482 AbstractCegarLoop]: Abstraction has 262 states and 1117 transitions. [2021-06-05 04:50:59,422 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:50:59,422 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 1117 transitions. [2021-06-05 04:50:59,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-06-05 04:50:59,423 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:50:59,423 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:50:59,423 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-05 04:50:59,423 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:50:59,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:50:59,423 INFO L82 PathProgramCache]: Analyzing trace with hash 1654834201, now seen corresponding path program 1 times [2021-06-05 04:50:59,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:50:59,424 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132893097] [2021-06-05 04:50:59,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:50:59,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:50:59,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:50:59,435 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:50:59,436 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132893097] [2021-06-05 04:50:59,436 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132893097] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:50:59,436 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:50:59,436 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 04:50:59,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622080735] [2021-06-05 04:50:59,436 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 04:50:59,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:50:59,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 04:50:59,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 04:50:59,437 INFO L87 Difference]: Start difference. First operand 262 states and 1117 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:50:59,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:50:59,443 INFO L93 Difference]: Finished difference Result 297 states and 1258 transitions. [2021-06-05 04:50:59,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 04:50:59,443 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-06-05 04:50:59,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:50:59,446 INFO L225 Difference]: With dead ends: 297 [2021-06-05 04:50:59,446 INFO L226 Difference]: Without dead ends: 297 [2021-06-05 04:50:59,446 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 04:50:59,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2021-06-05 04:50:59,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 297. [2021-06-05 04:50:59,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 296 states have (on average 4.25) internal successors, (1258), 296 states have internal predecessors, (1258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:50:59,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 1258 transitions. [2021-06-05 04:50:59,455 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 1258 transitions. Word has length 15 [2021-06-05 04:50:59,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:50:59,456 INFO L482 AbstractCegarLoop]: Abstraction has 297 states and 1258 transitions. [2021-06-05 04:50:59,456 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:50:59,456 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 1258 transitions. [2021-06-05 04:50:59,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-06-05 04:50:59,457 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:50:59,457 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:50:59,457 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-05 04:50:59,457 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:50:59,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:50:59,458 INFO L82 PathProgramCache]: Analyzing trace with hash -2109293491, now seen corresponding path program 1 times [2021-06-05 04:50:59,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:50:59,458 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069699816] [2021-06-05 04:50:59,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:50:59,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:50:59,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:50:59,473 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:50:59,474 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069699816] [2021-06-05 04:50:59,474 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069699816] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:50:59,474 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:50:59,474 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 04:50:59,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799207708] [2021-06-05 04:50:59,474 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 04:50:59,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:50:59,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 04:50:59,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 04:50:59,475 INFO L87 Difference]: Start difference. First operand 297 states and 1258 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:50:59,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:50:59,491 INFO L93 Difference]: Finished difference Result 340 states and 1425 transitions. [2021-06-05 04:50:59,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 04:50:59,491 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-06-05 04:50:59,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:50:59,494 INFO L225 Difference]: With dead ends: 340 [2021-06-05 04:50:59,494 INFO L226 Difference]: Without dead ends: 340 [2021-06-05 04:50:59,494 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 04:50:59,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2021-06-05 04:50:59,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 336. [2021-06-05 04:50:59,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 335 states have (on average 4.2298507462686565) internal successors, (1417), 335 states have internal predecessors, (1417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:50:59,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 1417 transitions. [2021-06-05 04:50:59,505 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 1417 transitions. Word has length 15 [2021-06-05 04:50:59,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:50:59,505 INFO L482 AbstractCegarLoop]: Abstraction has 336 states and 1417 transitions. [2021-06-05 04:50:59,507 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:50:59,508 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 1417 transitions. [2021-06-05 04:50:59,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-06-05 04:50:59,511 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:50:59,512 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:50:59,513 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-05 04:50:59,513 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:50:59,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:50:59,513 INFO L82 PathProgramCache]: Analyzing trace with hash -1748926659, now seen corresponding path program 1 times [2021-06-05 04:50:59,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:50:59,514 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376298696] [2021-06-05 04:50:59,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:50:59,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:50:59,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:50:59,530 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:50:59,531 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376298696] [2021-06-05 04:50:59,532 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376298696] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:50:59,534 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:50:59,534 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 04:50:59,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899608035] [2021-06-05 04:50:59,534 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 04:50:59,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:50:59,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 04:50:59,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 04:50:59,535 INFO L87 Difference]: Start difference. First operand 336 states and 1417 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:50:59,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:50:59,543 INFO L93 Difference]: Finished difference Result 386 states and 1608 transitions. [2021-06-05 04:50:59,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 04:50:59,543 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-06-05 04:50:59,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:50:59,546 INFO L225 Difference]: With dead ends: 386 [2021-06-05 04:50:59,546 INFO L226 Difference]: Without dead ends: 386 [2021-06-05 04:50:59,547 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 04:50:59,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2021-06-05 04:50:59,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 386. [2021-06-05 04:50:59,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 4.176623376623376) internal successors, (1608), 385 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:50:59,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1608 transitions. [2021-06-05 04:50:59,558 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1608 transitions. Word has length 15 [2021-06-05 04:50:59,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:50:59,558 INFO L482 AbstractCegarLoop]: Abstraction has 386 states and 1608 transitions. [2021-06-05 04:50:59,559 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:50:59,559 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1608 transitions. [2021-06-05 04:50:59,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-06-05 04:50:59,560 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:50:59,560 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:50:59,560 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-05 04:50:59,560 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:50:59,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:50:59,561 INFO L82 PathProgramCache]: Analyzing trace with hash 181705837, now seen corresponding path program 1 times [2021-06-05 04:50:59,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:50:59,561 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693583684] [2021-06-05 04:50:59,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:50:59,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:50:59,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:50:59,577 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:50:59,577 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693583684] [2021-06-05 04:50:59,577 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693583684] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:50:59,578 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:50:59,578 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 04:50:59,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390687915] [2021-06-05 04:50:59,578 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 04:50:59,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:50:59,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 04:50:59,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 04:50:59,581 INFO L87 Difference]: Start difference. First operand 386 states and 1608 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:50:59,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:50:59,590 INFO L93 Difference]: Finished difference Result 436 states and 1799 transitions. [2021-06-05 04:50:59,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 04:50:59,590 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-06-05 04:50:59,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:50:59,593 INFO L225 Difference]: With dead ends: 436 [2021-06-05 04:50:59,593 INFO L226 Difference]: Without dead ends: 436 [2021-06-05 04:50:59,594 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 04:50:59,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2021-06-05 04:50:59,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 436. [2021-06-05 04:50:59,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 435 states have (on average 4.135632183908046) internal successors, (1799), 435 states have internal predecessors, (1799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:50:59,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 1799 transitions. [2021-06-05 04:50:59,607 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 1799 transitions. Word has length 15 [2021-06-05 04:50:59,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:50:59,608 INFO L482 AbstractCegarLoop]: Abstraction has 436 states and 1799 transitions. [2021-06-05 04:50:59,609 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:50:59,609 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 1799 transitions. [2021-06-05 04:50:59,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-06-05 04:50:59,610 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:50:59,610 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:50:59,610 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-06-05 04:50:59,610 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:50:59,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:50:59,611 INFO L82 PathProgramCache]: Analyzing trace with hash 542072669, now seen corresponding path program 1 times [2021-06-05 04:50:59,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:50:59,611 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227202919] [2021-06-05 04:50:59,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:50:59,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:50:59,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:50:59,626 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:50:59,626 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227202919] [2021-06-05 04:50:59,626 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227202919] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:50:59,627 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:50:59,627 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 04:50:59,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344684434] [2021-06-05 04:50:59,627 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 04:50:59,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:50:59,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 04:50:59,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 04:50:59,628 INFO L87 Difference]: Start difference. First operand 436 states and 1799 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:50:59,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:50:59,636 INFO L93 Difference]: Finished difference Result 493 states and 2014 transitions. [2021-06-05 04:50:59,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 04:50:59,637 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-06-05 04:50:59,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:50:59,640 INFO L225 Difference]: With dead ends: 493 [2021-06-05 04:50:59,640 INFO L226 Difference]: Without dead ends: 493 [2021-06-05 04:50:59,641 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 04:50:59,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2021-06-05 04:50:59,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 493. [2021-06-05 04:50:59,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 493 states, 492 states have (on average 4.09349593495935) internal successors, (2014), 492 states have internal predecessors, (2014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:50:59,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 2014 transitions. [2021-06-05 04:50:59,657 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 2014 transitions. Word has length 15 [2021-06-05 04:50:59,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:50:59,658 INFO L482 AbstractCegarLoop]: Abstraction has 493 states and 2014 transitions. [2021-06-05 04:50:59,658 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:50:59,658 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 2014 transitions. [2021-06-05 04:50:59,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-06-05 04:50:59,659 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:50:59,659 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:50:59,660 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-06-05 04:50:59,660 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:50:59,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:50:59,660 INFO L82 PathProgramCache]: Analyzing trace with hash -85243986, now seen corresponding path program 1 times [2021-06-05 04:50:59,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:50:59,660 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090511040] [2021-06-05 04:50:59,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:50:59,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:50:59,705 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 04:50:59,705 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:50:59,705 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090511040] [2021-06-05 04:50:59,705 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090511040] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:50:59,705 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:50:59,705 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 04:50:59,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620013534] [2021-06-05 04:50:59,706 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 04:50:59,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:50:59,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 04:50:59,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-05 04:50:59,706 INFO L87 Difference]: Start difference. First operand 493 states and 2014 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:50:59,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:50:59,812 INFO L93 Difference]: Finished difference Result 725 states and 2618 transitions. [2021-06-05 04:50:59,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 04:50:59,812 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-06-05 04:50:59,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:50:59,817 INFO L225 Difference]: With dead ends: 725 [2021-06-05 04:50:59,817 INFO L226 Difference]: Without dead ends: 698 [2021-06-05 04:50:59,817 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.3ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 04:50:59,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2021-06-05 04:50:59,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 544. [2021-06-05 04:50:59,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 543 states have (on average 3.955801104972376) internal successors, (2148), 543 states have internal predecessors, (2148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:50:59,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 2148 transitions. [2021-06-05 04:50:59,834 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 2148 transitions. Word has length 16 [2021-06-05 04:50:59,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:50:59,834 INFO L482 AbstractCegarLoop]: Abstraction has 544 states and 2148 transitions. [2021-06-05 04:50:59,835 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:50:59,835 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 2148 transitions. [2021-06-05 04:50:59,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-06-05 04:50:59,836 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:50:59,836 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:50:59,836 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-06-05 04:50:59,837 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:50:59,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:50:59,837 INFO L82 PathProgramCache]: Analyzing trace with hash 705140398, now seen corresponding path program 2 times [2021-06-05 04:50:59,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:50:59,837 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420283562] [2021-06-05 04:50:59,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:50:59,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:50:59,874 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 04:50:59,874 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:50:59,874 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420283562] [2021-06-05 04:50:59,874 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420283562] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:50:59,874 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:50:59,874 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 04:50:59,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574836211] [2021-06-05 04:50:59,875 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 04:50:59,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:50:59,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 04:50:59,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-05 04:50:59,876 INFO L87 Difference]: Start difference. First operand 544 states and 2148 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:50:59,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:50:59,973 INFO L93 Difference]: Finished difference Result 779 states and 2777 transitions. [2021-06-05 04:50:59,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 04:50:59,974 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-06-05 04:50:59,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:50:59,978 INFO L225 Difference]: With dead ends: 779 [2021-06-05 04:50:59,978 INFO L226 Difference]: Without dead ends: 752 [2021-06-05 04:50:59,979 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 44.2ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 04:50:59,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2021-06-05 04:50:59,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 565. [2021-06-05 04:50:59,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 564 states have (on average 3.904255319148936) internal successors, (2202), 564 states have internal predecessors, (2202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:50:59,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 2202 transitions. [2021-06-05 04:50:59,997 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 2202 transitions. Word has length 16 [2021-06-05 04:50:59,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:50:59,997 INFO L482 AbstractCegarLoop]: Abstraction has 565 states and 2202 transitions. [2021-06-05 04:50:59,997 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:50:59,998 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 2202 transitions. [2021-06-05 04:50:59,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-06-05 04:50:59,999 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:50:59,999 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:50:59,999 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-06-05 04:50:59,999 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:51:00,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:51:00,000 INFO L82 PathProgramCache]: Analyzing trace with hash 1662493965, now seen corresponding path program 1 times [2021-06-05 04:51:00,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:51:00,000 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114361723] [2021-06-05 04:51:00,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:51:00,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:51:00,081 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 04:51:00,081 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:51:00,081 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114361723] [2021-06-05 04:51:00,081 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114361723] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:51:00,081 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:51:00,082 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 04:51:00,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029666043] [2021-06-05 04:51:00,082 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 04:51:00,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:51:00,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 04:51:00,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-05 04:51:00,083 INFO L87 Difference]: Start difference. First operand 565 states and 2202 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:00,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:51:00,351 INFO L93 Difference]: Finished difference Result 793 states and 2784 transitions. [2021-06-05 04:51:00,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 04:51:00,351 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-06-05 04:51:00,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:51:00,356 INFO L225 Difference]: With dead ends: 793 [2021-06-05 04:51:00,356 INFO L226 Difference]: Without dead ends: 766 [2021-06-05 04:51:00,356 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 223.1ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 04:51:00,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2021-06-05 04:51:00,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 612. [2021-06-05 04:51:00,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 612 states, 611 states have (on average 3.7872340425531914) internal successors, (2314), 611 states have internal predecessors, (2314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:00,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 2314 transitions. [2021-06-05 04:51:00,390 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 2314 transitions. Word has length 16 [2021-06-05 04:51:00,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:51:00,390 INFO L482 AbstractCegarLoop]: Abstraction has 612 states and 2314 transitions. [2021-06-05 04:51:00,390 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:00,390 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 2314 transitions. [2021-06-05 04:51:00,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-06-05 04:51:00,392 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:51:00,392 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:51:00,392 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-06-05 04:51:00,393 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:51:00,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:51:00,393 INFO L82 PathProgramCache]: Analyzing trace with hash -1842088947, now seen corresponding path program 2 times [2021-06-05 04:51:00,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:51:00,393 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866485188] [2021-06-05 04:51:00,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:51:00,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:51:00,473 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 04:51:00,473 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:51:00,473 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866485188] [2021-06-05 04:51:00,473 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866485188] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:51:00,473 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:51:00,473 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 04:51:00,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080425058] [2021-06-05 04:51:00,474 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 04:51:00,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:51:00,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 04:51:00,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-05 04:51:00,474 INFO L87 Difference]: Start difference. First operand 612 states and 2314 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:00,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:51:00,737 INFO L93 Difference]: Finished difference Result 847 states and 2943 transitions. [2021-06-05 04:51:00,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 04:51:00,738 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-06-05 04:51:00,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:51:00,742 INFO L225 Difference]: With dead ends: 847 [2021-06-05 04:51:00,742 INFO L226 Difference]: Without dead ends: 820 [2021-06-05 04:51:00,742 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 203.3ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 04:51:00,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2021-06-05 04:51:00,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 633. [2021-06-05 04:51:00,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 633 states, 632 states have (on average 3.7468354430379747) internal successors, (2368), 632 states have internal predecessors, (2368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:00,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 2368 transitions. [2021-06-05 04:51:00,761 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 2368 transitions. Word has length 16 [2021-06-05 04:51:00,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:51:00,761 INFO L482 AbstractCegarLoop]: Abstraction has 633 states and 2368 transitions. [2021-06-05 04:51:00,761 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:00,761 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 2368 transitions. [2021-06-05 04:51:00,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-06-05 04:51:00,763 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:51:00,763 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:51:00,763 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-06-05 04:51:00,763 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:51:00,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:51:00,764 INFO L82 PathProgramCache]: Analyzing trace with hash -881757258, now seen corresponding path program 1 times [2021-06-05 04:51:00,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:51:00,764 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818216946] [2021-06-05 04:51:00,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:51:00,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:51:00,813 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 04:51:00,813 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:51:00,814 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818216946] [2021-06-05 04:51:00,814 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818216946] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:51:00,814 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:51:00,814 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 04:51:00,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412198670] [2021-06-05 04:51:00,814 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 04:51:00,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:51:00,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 04:51:00,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-06-05 04:51:00,815 INFO L87 Difference]: Start difference. First operand 633 states and 2368 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:00,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:51:00,971 INFO L93 Difference]: Finished difference Result 974 states and 3400 transitions. [2021-06-05 04:51:00,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-05 04:51:00,972 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-06-05 04:51:00,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:51:00,977 INFO L225 Difference]: With dead ends: 974 [2021-06-05 04:51:00,977 INFO L226 Difference]: Without dead ends: 951 [2021-06-05 04:51:00,977 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 59.5ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:51:00,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 951 states. [2021-06-05 04:51:00,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 951 to 641. [2021-06-05 04:51:00,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 641 states, 640 states have (on average 3.7375) internal successors, (2392), 640 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:00,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 2392 transitions. [2021-06-05 04:51:00,996 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 2392 transitions. Word has length 16 [2021-06-05 04:51:00,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:51:00,996 INFO L482 AbstractCegarLoop]: Abstraction has 641 states and 2392 transitions. [2021-06-05 04:51:00,996 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:00,996 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 2392 transitions. [2021-06-05 04:51:00,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-06-05 04:51:00,998 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:51:00,998 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:51:00,998 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-06-05 04:51:00,998 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:51:00,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:51:00,998 INFO L82 PathProgramCache]: Analyzing trace with hash 768619160, now seen corresponding path program 1 times [2021-06-05 04:51:00,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:51:00,999 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840375421] [2021-06-05 04:51:00,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:51:01,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:51:01,060 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 04:51:01,060 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:51:01,060 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840375421] [2021-06-05 04:51:01,060 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840375421] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:51:01,060 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:51:01,060 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 04:51:01,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646911262] [2021-06-05 04:51:01,061 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 04:51:01,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:51:01,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 04:51:01,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-06-05 04:51:01,061 INFO L87 Difference]: Start difference. First operand 641 states and 2392 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:01,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:51:01,242 INFO L93 Difference]: Finished difference Result 965 states and 3345 transitions. [2021-06-05 04:51:01,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-05 04:51:01,243 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-06-05 04:51:01,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:51:01,248 INFO L225 Difference]: With dead ends: 965 [2021-06-05 04:51:01,248 INFO L226 Difference]: Without dead ends: 936 [2021-06-05 04:51:01,248 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 93.2ms TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:51:01,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 936 states. [2021-06-05 04:51:01,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 936 to 645. [2021-06-05 04:51:01,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 644 states have (on average 3.732919254658385) internal successors, (2404), 644 states have internal predecessors, (2404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:01,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 2404 transitions. [2021-06-05 04:51:01,267 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 2404 transitions. Word has length 16 [2021-06-05 04:51:01,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:51:01,268 INFO L482 AbstractCegarLoop]: Abstraction has 645 states and 2404 transitions. [2021-06-05 04:51:01,268 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:01,268 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 2404 transitions. [2021-06-05 04:51:01,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-06-05 04:51:01,270 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:51:01,270 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:51:01,270 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-06-05 04:51:01,270 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:51:01,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:51:01,271 INFO L82 PathProgramCache]: Analyzing trace with hash -1488759573, now seen corresponding path program 1 times [2021-06-05 04:51:01,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:51:01,271 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77369398] [2021-06-05 04:51:01,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:51:01,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:51:01,421 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 04:51:01,421 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:51:01,421 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77369398] [2021-06-05 04:51:01,421 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77369398] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:51:01,421 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:51:01,421 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 04:51:01,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379591334] [2021-06-05 04:51:01,422 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 04:51:01,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:51:01,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 04:51:01,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-06-05 04:51:01,422 INFO L87 Difference]: Start difference. First operand 645 states and 2404 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:01,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:51:01,678 INFO L93 Difference]: Finished difference Result 1001 states and 3467 transitions. [2021-06-05 04:51:01,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-05 04:51:01,678 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-06-05 04:51:01,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:51:01,683 INFO L225 Difference]: With dead ends: 1001 [2021-06-05 04:51:01,683 INFO L226 Difference]: Without dead ends: 978 [2021-06-05 04:51:01,683 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 186.4ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:51:01,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 978 states. [2021-06-05 04:51:01,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 978 to 653. [2021-06-05 04:51:01,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 653 states, 652 states have (on average 3.723926380368098) internal successors, (2428), 652 states have internal predecessors, (2428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:01,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 2428 transitions. [2021-06-05 04:51:01,702 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 2428 transitions. Word has length 16 [2021-06-05 04:51:01,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:51:01,702 INFO L482 AbstractCegarLoop]: Abstraction has 653 states and 2428 transitions. [2021-06-05 04:51:01,702 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:01,702 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 2428 transitions. [2021-06-05 04:51:01,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-06-05 04:51:01,704 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:51:01,704 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:51:01,704 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-06-05 04:51:01,704 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:51:01,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:51:01,704 INFO L82 PathProgramCache]: Analyzing trace with hash 185156587, now seen corresponding path program 1 times [2021-06-05 04:51:01,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:51:01,704 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404400447] [2021-06-05 04:51:01,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:51:01,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:51:01,832 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 04:51:01,833 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:51:01,833 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404400447] [2021-06-05 04:51:01,833 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404400447] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:51:01,833 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:51:01,833 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 04:51:01,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490012383] [2021-06-05 04:51:01,833 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 04:51:01,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:51:01,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 04:51:01,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-06-05 04:51:01,834 INFO L87 Difference]: Start difference. First operand 653 states and 2428 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:02,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:51:02,041 INFO L93 Difference]: Finished difference Result 972 states and 3352 transitions. [2021-06-05 04:51:02,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-05 04:51:02,042 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-06-05 04:51:02,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:51:02,047 INFO L225 Difference]: With dead ends: 972 [2021-06-05 04:51:02,047 INFO L226 Difference]: Without dead ends: 943 [2021-06-05 04:51:02,047 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 138.2ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:51:02,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943 states. [2021-06-05 04:51:02,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943 to 657. [2021-06-05 04:51:02,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 656 states have (on average 3.7195121951219514) internal successors, (2440), 656 states have internal predecessors, (2440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:02,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 2440 transitions. [2021-06-05 04:51:02,064 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 2440 transitions. Word has length 16 [2021-06-05 04:51:02,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:51:02,065 INFO L482 AbstractCegarLoop]: Abstraction has 657 states and 2440 transitions. [2021-06-05 04:51:02,065 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:02,065 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 2440 transitions. [2021-06-05 04:51:02,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-06-05 04:51:02,067 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:51:02,067 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:51:02,067 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-06-05 04:51:02,067 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:51:02,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:51:02,067 INFO L82 PathProgramCache]: Analyzing trace with hash -1227931188, now seen corresponding path program 2 times [2021-06-05 04:51:02,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:51:02,067 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700085581] [2021-06-05 04:51:02,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:51:02,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:51:02,168 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 04:51:02,168 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:51:02,168 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700085581] [2021-06-05 04:51:02,168 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700085581] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:51:02,168 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:51:02,168 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 04:51:02,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073940516] [2021-06-05 04:51:02,168 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 04:51:02,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:51:02,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 04:51:02,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-05 04:51:02,169 INFO L87 Difference]: Start difference. First operand 657 states and 2440 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:02,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:51:02,325 INFO L93 Difference]: Finished difference Result 1111 states and 3792 transitions. [2021-06-05 04:51:02,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-05 04:51:02,326 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-06-05 04:51:02,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:51:02,331 INFO L225 Difference]: With dead ends: 1111 [2021-06-05 04:51:02,331 INFO L226 Difference]: Without dead ends: 1088 [2021-06-05 04:51:02,331 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 139.1ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 04:51:02,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1088 states. [2021-06-05 04:51:02,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1088 to 657. [2021-06-05 04:51:02,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 656 states have (on average 3.7195121951219514) internal successors, (2440), 656 states have internal predecessors, (2440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:02,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 2440 transitions. [2021-06-05 04:51:02,351 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 2440 transitions. Word has length 16 [2021-06-05 04:51:02,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:51:02,351 INFO L482 AbstractCegarLoop]: Abstraction has 657 states and 2440 transitions. [2021-06-05 04:51:02,351 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:02,351 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 2440 transitions. [2021-06-05 04:51:02,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-06-05 04:51:02,353 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:51:02,353 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:51:02,353 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-06-05 04:51:02,354 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:51:02,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:51:02,354 INFO L82 PathProgramCache]: Analyzing trace with hash -1214418261, now seen corresponding path program 2 times [2021-06-05 04:51:02,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:51:02,354 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144890794] [2021-06-05 04:51:02,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:51:02,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:51:02,434 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 04:51:02,434 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:51:02,434 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144890794] [2021-06-05 04:51:02,434 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144890794] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:51:02,434 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:51:02,434 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 04:51:02,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581386562] [2021-06-05 04:51:02,435 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 04:51:02,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:51:02,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 04:51:02,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-06-05 04:51:02,436 INFO L87 Difference]: Start difference. First operand 657 states and 2440 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:02,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:51:02,653 INFO L93 Difference]: Finished difference Result 1170 states and 4048 transitions. [2021-06-05 04:51:02,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 04:51:02,653 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-06-05 04:51:02,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:51:02,663 INFO L225 Difference]: With dead ends: 1170 [2021-06-05 04:51:02,663 INFO L226 Difference]: Without dead ends: 1143 [2021-06-05 04:51:02,663 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 113.1ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-06-05 04:51:02,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1143 states. [2021-06-05 04:51:02,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1143 to 657. [2021-06-05 04:51:02,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 656 states have (on average 3.716463414634146) internal successors, (2438), 656 states have internal predecessors, (2438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:02,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 2438 transitions. [2021-06-05 04:51:02,687 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 2438 transitions. Word has length 16 [2021-06-05 04:51:02,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:51:02,687 INFO L482 AbstractCegarLoop]: Abstraction has 657 states and 2438 transitions. [2021-06-05 04:51:02,687 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:02,687 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 2438 transitions. [2021-06-05 04:51:02,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-06-05 04:51:02,690 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:51:02,690 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:51:02,690 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-06-05 04:51:02,690 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:51:02,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:51:02,690 INFO L82 PathProgramCache]: Analyzing trace with hash 1866944204, now seen corresponding path program 2 times [2021-06-05 04:51:02,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:51:02,691 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251192656] [2021-06-05 04:51:02,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:51:02,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:51:02,783 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 04:51:02,783 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:51:02,783 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251192656] [2021-06-05 04:51:02,783 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251192656] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:51:02,783 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:51:02,784 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 04:51:02,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311393934] [2021-06-05 04:51:02,784 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 04:51:02,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:51:02,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 04:51:02,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-06-05 04:51:02,785 INFO L87 Difference]: Start difference. First operand 657 states and 2438 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:02,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:51:02,938 INFO L93 Difference]: Finished difference Result 1084 states and 3756 transitions. [2021-06-05 04:51:02,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 04:51:02,939 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-06-05 04:51:02,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:51:02,943 INFO L225 Difference]: With dead ends: 1084 [2021-06-05 04:51:02,943 INFO L226 Difference]: Without dead ends: 1055 [2021-06-05 04:51:02,943 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 107.3ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-06-05 04:51:02,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1055 states. [2021-06-05 04:51:02,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1055 to 657. [2021-06-05 04:51:02,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 656 states have (on average 3.716463414634146) internal successors, (2438), 656 states have internal predecessors, (2438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:02,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 2438 transitions. [2021-06-05 04:51:02,965 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 2438 transitions. Word has length 16 [2021-06-05 04:51:02,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:51:02,965 INFO L482 AbstractCegarLoop]: Abstraction has 657 states and 2438 transitions. [2021-06-05 04:51:02,965 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:02,965 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 2438 transitions. [2021-06-05 04:51:02,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-06-05 04:51:02,967 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:51:02,967 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:51:02,967 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-06-05 04:51:02,967 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:51:02,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:51:02,968 INFO L82 PathProgramCache]: Analyzing trace with hash -1453708437, now seen corresponding path program 2 times [2021-06-05 04:51:02,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:51:02,968 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497066162] [2021-06-05 04:51:02,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:51:02,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:51:03,064 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 04:51:03,064 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:51:03,065 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497066162] [2021-06-05 04:51:03,065 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497066162] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:51:03,065 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:51:03,065 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 04:51:03,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937879372] [2021-06-05 04:51:03,065 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 04:51:03,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:51:03,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 04:51:03,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-06-05 04:51:03,066 INFO L87 Difference]: Start difference. First operand 657 states and 2438 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:03,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:51:03,246 INFO L93 Difference]: Finished difference Result 1088 states and 3765 transitions. [2021-06-05 04:51:03,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 04:51:03,247 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-06-05 04:51:03,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:51:03,250 INFO L225 Difference]: With dead ends: 1088 [2021-06-05 04:51:03,250 INFO L226 Difference]: Without dead ends: 1048 [2021-06-05 04:51:03,250 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 140.8ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-06-05 04:51:03,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1048 states. [2021-06-05 04:51:03,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1048 to 657. [2021-06-05 04:51:03,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 656 states have (on average 3.7103658536585367) internal successors, (2434), 656 states have internal predecessors, (2434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:03,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 2434 transitions. [2021-06-05 04:51:03,267 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 2434 transitions. Word has length 16 [2021-06-05 04:51:03,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:51:03,267 INFO L482 AbstractCegarLoop]: Abstraction has 657 states and 2434 transitions. [2021-06-05 04:51:03,267 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:03,267 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 2434 transitions. [2021-06-05 04:51:03,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-06-05 04:51:03,269 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:51:03,269 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:51:03,269 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-06-05 04:51:03,269 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:51:03,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:51:03,270 INFO L82 PathProgramCache]: Analyzing trace with hash 486403162, now seen corresponding path program 3 times [2021-06-05 04:51:03,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:51:03,270 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983695513] [2021-06-05 04:51:03,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:51:03,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:51:03,314 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 04:51:03,314 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:51:03,314 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983695513] [2021-06-05 04:51:03,314 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983695513] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:51:03,315 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:51:03,315 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 04:51:03,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499004596] [2021-06-05 04:51:03,315 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 04:51:03,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:51:03,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 04:51:03,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-06-05 04:51:03,316 INFO L87 Difference]: Start difference. First operand 657 states and 2434 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:03,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:51:03,406 INFO L93 Difference]: Finished difference Result 869 states and 2928 transitions. [2021-06-05 04:51:03,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 04:51:03,406 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-06-05 04:51:03,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:51:03,409 INFO L225 Difference]: With dead ends: 869 [2021-06-05 04:51:03,409 INFO L226 Difference]: Without dead ends: 846 [2021-06-05 04:51:03,409 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 42.8ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 04:51:03,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 846 states. [2021-06-05 04:51:03,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 846 to 634. [2021-06-05 04:51:03,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 634 states, 633 states have (on average 3.654028436018957) internal successors, (2313), 633 states have internal predecessors, (2313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:03,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 2313 transitions. [2021-06-05 04:51:03,425 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 2313 transitions. Word has length 16 [2021-06-05 04:51:03,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:51:03,425 INFO L482 AbstractCegarLoop]: Abstraction has 634 states and 2313 transitions. [2021-06-05 04:51:03,425 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:03,425 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 2313 transitions. [2021-06-05 04:51:03,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-06-05 04:51:03,427 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:51:03,427 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:51:03,427 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-06-05 04:51:03,427 INFO L430 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:51:03,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:51:03,427 INFO L82 PathProgramCache]: Analyzing trace with hash -1119769510, now seen corresponding path program 4 times [2021-06-05 04:51:03,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:51:03,427 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114366883] [2021-06-05 04:51:03,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:51:03,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:51:03,471 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 04:51:03,471 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:51:03,471 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114366883] [2021-06-05 04:51:03,471 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114366883] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:51:03,471 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:51:03,471 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 04:51:03,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826164159] [2021-06-05 04:51:03,472 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 04:51:03,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:51:03,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 04:51:03,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-06-05 04:51:03,473 INFO L87 Difference]: Start difference. First operand 634 states and 2313 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:03,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:51:03,566 INFO L93 Difference]: Finished difference Result 825 states and 2808 transitions. [2021-06-05 04:51:03,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 04:51:03,566 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-06-05 04:51:03,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:51:03,568 INFO L225 Difference]: With dead ends: 825 [2021-06-05 04:51:03,568 INFO L226 Difference]: Without dead ends: 802 [2021-06-05 04:51:03,568 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 48.6ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 04:51:03,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 802 states. [2021-06-05 04:51:03,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 802 to 644. [2021-06-05 04:51:03,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 644 states, 643 states have (on average 3.636080870917574) internal successors, (2338), 643 states have internal predecessors, (2338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:03,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 644 states to 644 states and 2338 transitions. [2021-06-05 04:51:03,583 INFO L78 Accepts]: Start accepts. Automaton has 644 states and 2338 transitions. Word has length 16 [2021-06-05 04:51:03,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:51:03,583 INFO L482 AbstractCegarLoop]: Abstraction has 644 states and 2338 transitions. [2021-06-05 04:51:03,583 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:03,583 INFO L276 IsEmpty]: Start isEmpty. Operand 644 states and 2338 transitions. [2021-06-05 04:51:03,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-06-05 04:51:03,585 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:51:03,585 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:51:03,585 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-06-05 04:51:03,585 INFO L430 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:51:03,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:51:03,585 INFO L82 PathProgramCache]: Analyzing trace with hash 423749436, now seen corresponding path program 3 times [2021-06-05 04:51:03,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:51:03,585 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015188103] [2021-06-05 04:51:03,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:51:03,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:51:03,641 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 04:51:03,642 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:51:03,642 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015188103] [2021-06-05 04:51:03,642 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015188103] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:51:03,642 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:51:03,642 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 04:51:03,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382817492] [2021-06-05 04:51:03,642 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 04:51:03,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:51:03,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 04:51:03,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-06-05 04:51:03,643 INFO L87 Difference]: Start difference. First operand 644 states and 2338 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:03,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:51:03,728 INFO L93 Difference]: Finished difference Result 815 states and 2725 transitions. [2021-06-05 04:51:03,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 04:51:03,728 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-06-05 04:51:03,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:51:03,731 INFO L225 Difference]: With dead ends: 815 [2021-06-05 04:51:03,731 INFO L226 Difference]: Without dead ends: 786 [2021-06-05 04:51:03,731 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 52.8ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 04:51:03,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 786 states. [2021-06-05 04:51:03,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 786 to 612. [2021-06-05 04:51:03,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 612 states, 611 states have (on average 3.5810147299509003) internal successors, (2188), 611 states have internal predecessors, (2188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:03,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 2188 transitions. [2021-06-05 04:51:03,744 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 2188 transitions. Word has length 16 [2021-06-05 04:51:03,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:51:03,745 INFO L482 AbstractCegarLoop]: Abstraction has 612 states and 2188 transitions. [2021-06-05 04:51:03,745 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:03,745 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 2188 transitions. [2021-06-05 04:51:03,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-06-05 04:51:03,746 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:51:03,746 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:51:03,746 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-06-05 04:51:03,746 INFO L430 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:51:03,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:51:03,747 INFO L82 PathProgramCache]: Analyzing trace with hash 315557690, now seen corresponding path program 4 times [2021-06-05 04:51:03,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:51:03,747 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291280886] [2021-06-05 04:51:03,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:51:03,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:51:03,800 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 04:51:03,800 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:51:03,800 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291280886] [2021-06-05 04:51:03,800 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291280886] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:51:03,800 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:51:03,801 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 04:51:03,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594807769] [2021-06-05 04:51:03,801 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 04:51:03,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:51:03,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 04:51:03,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-06-05 04:51:03,801 INFO L87 Difference]: Start difference. First operand 612 states and 2188 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:03,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:51:03,891 INFO L93 Difference]: Finished difference Result 803 states and 2689 transitions. [2021-06-05 04:51:03,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 04:51:03,892 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-06-05 04:51:03,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:51:03,894 INFO L225 Difference]: With dead ends: 803 [2021-06-05 04:51:03,894 INFO L226 Difference]: Without dead ends: 774 [2021-06-05 04:51:03,894 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 49.3ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 04:51:03,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2021-06-05 04:51:03,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 618. [2021-06-05 04:51:03,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 618 states, 617 states have (on average 3.5769854132901133) internal successors, (2207), 617 states have internal predecessors, (2207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:03,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 2207 transitions. [2021-06-05 04:51:03,908 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 2207 transitions. Word has length 16 [2021-06-05 04:51:03,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:51:03,908 INFO L482 AbstractCegarLoop]: Abstraction has 618 states and 2207 transitions. [2021-06-05 04:51:03,908 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:03,909 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 2207 transitions. [2021-06-05 04:51:03,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-06-05 04:51:03,910 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:51:03,910 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:51:03,910 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-06-05 04:51:03,910 INFO L430 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:51:03,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:51:03,910 INFO L82 PathProgramCache]: Analyzing trace with hash 2014690215, now seen corresponding path program 3 times [2021-06-05 04:51:03,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:51:03,911 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626252172] [2021-06-05 04:51:03,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:51:03,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:51:04,014 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 04:51:04,015 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:51:04,015 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626252172] [2021-06-05 04:51:04,015 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626252172] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:51:04,015 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:51:04,015 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 04:51:04,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16461408] [2021-06-05 04:51:04,015 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 04:51:04,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:51:04,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 04:51:04,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-05 04:51:04,017 INFO L87 Difference]: Start difference. First operand 618 states and 2207 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:04,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:51:04,217 INFO L93 Difference]: Finished difference Result 742 states and 2401 transitions. [2021-06-05 04:51:04,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 04:51:04,218 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-06-05 04:51:04,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:51:04,219 INFO L225 Difference]: With dead ends: 742 [2021-06-05 04:51:04,219 INFO L226 Difference]: Without dead ends: 719 [2021-06-05 04:51:04,219 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 200.2ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 04:51:04,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2021-06-05 04:51:04,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 555. [2021-06-05 04:51:04,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 555 states, 554 states have (on average 3.487364620938628) internal successors, (1932), 554 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:04,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 1932 transitions. [2021-06-05 04:51:04,231 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 1932 transitions. Word has length 16 [2021-06-05 04:51:04,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:51:04,232 INFO L482 AbstractCegarLoop]: Abstraction has 555 states and 1932 transitions. [2021-06-05 04:51:04,232 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:04,232 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 1932 transitions. [2021-06-05 04:51:04,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-06-05 04:51:04,233 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:51:04,233 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:51:04,233 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-06-05 04:51:04,233 INFO L430 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:51:04,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:51:04,234 INFO L82 PathProgramCache]: Analyzing trace with hash -1307197767, now seen corresponding path program 4 times [2021-06-05 04:51:04,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:51:04,234 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897726558] [2021-06-05 04:51:04,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:51:04,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:51:04,300 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 04:51:04,300 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:51:04,300 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897726558] [2021-06-05 04:51:04,300 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897726558] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:51:04,300 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:51:04,301 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 04:51:04,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683369600] [2021-06-05 04:51:04,301 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 04:51:04,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:51:04,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 04:51:04,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-05 04:51:04,302 INFO L87 Difference]: Start difference. First operand 555 states and 1932 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:04,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:51:04,507 INFO L93 Difference]: Finished difference Result 829 states and 2671 transitions. [2021-06-05 04:51:04,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-05 04:51:04,508 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-06-05 04:51:04,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:51:04,510 INFO L225 Difference]: With dead ends: 829 [2021-06-05 04:51:04,510 INFO L226 Difference]: Without dead ends: 806 [2021-06-05 04:51:04,511 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 128.6ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 04:51:04,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2021-06-05 04:51:04,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 565. [2021-06-05 04:51:04,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 564 states have (on average 3.469858156028369) internal successors, (1957), 564 states have internal predecessors, (1957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:04,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 1957 transitions. [2021-06-05 04:51:04,525 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 1957 transitions. Word has length 16 [2021-06-05 04:51:04,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:51:04,525 INFO L482 AbstractCegarLoop]: Abstraction has 565 states and 1957 transitions. [2021-06-05 04:51:04,525 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:04,525 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 1957 transitions. [2021-06-05 04:51:04,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-06-05 04:51:04,526 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:51:04,526 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:51:04,526 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-06-05 04:51:04,527 INFO L430 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:51:04,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:51:04,527 INFO L82 PathProgramCache]: Analyzing trace with hash -2145877403, now seen corresponding path program 3 times [2021-06-05 04:51:04,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:51:04,527 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532273674] [2021-06-05 04:51:04,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:51:04,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:51:04,613 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 04:51:04,614 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:51:04,614 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532273674] [2021-06-05 04:51:04,614 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532273674] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:51:04,614 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:51:04,614 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 04:51:04,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999453395] [2021-06-05 04:51:04,614 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 04:51:04,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:51:04,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 04:51:04,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-05 04:51:04,615 INFO L87 Difference]: Start difference. First operand 565 states and 1957 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:04,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:51:04,736 INFO L93 Difference]: Finished difference Result 670 states and 2109 transitions. [2021-06-05 04:51:04,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 04:51:04,737 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-06-05 04:51:04,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:51:04,738 INFO L225 Difference]: With dead ends: 670 [2021-06-05 04:51:04,738 INFO L226 Difference]: Without dead ends: 641 [2021-06-05 04:51:04,738 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 105.9ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 04:51:04,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2021-06-05 04:51:04,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 499. [2021-06-05 04:51:04,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 498 states have (on average 3.3493975903614457) internal successors, (1668), 498 states have internal predecessors, (1668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:04,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 1668 transitions. [2021-06-05 04:51:04,747 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 1668 transitions. Word has length 16 [2021-06-05 04:51:04,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:51:04,747 INFO L482 AbstractCegarLoop]: Abstraction has 499 states and 1668 transitions. [2021-06-05 04:51:04,747 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:04,747 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 1668 transitions. [2021-06-05 04:51:04,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-06-05 04:51:04,748 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:51:04,748 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:51:04,748 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-06-05 04:51:04,748 INFO L430 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:51:04,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:51:04,749 INFO L82 PathProgramCache]: Analyzing trace with hash 1820955431, now seen corresponding path program 4 times [2021-06-05 04:51:04,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:51:04,749 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719061431] [2021-06-05 04:51:04,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:51:04,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:51:04,818 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 04:51:04,818 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:51:04,818 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719061431] [2021-06-05 04:51:04,818 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719061431] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:51:04,818 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:51:04,818 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 04:51:04,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195252585] [2021-06-05 04:51:04,819 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 04:51:04,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:51:04,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 04:51:04,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-05 04:51:04,819 INFO L87 Difference]: Start difference. First operand 499 states and 1668 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:05,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:51:05,028 INFO L93 Difference]: Finished difference Result 674 states and 2121 transitions. [2021-06-05 04:51:05,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 04:51:05,028 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-06-05 04:51:05,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:51:05,029 INFO L225 Difference]: With dead ends: 674 [2021-06-05 04:51:05,030 INFO L226 Difference]: Without dead ends: 645 [2021-06-05 04:51:05,030 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 177.6ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 04:51:05,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2021-06-05 04:51:05,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 505. [2021-06-05 04:51:05,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 504 states have (on average 3.3472222222222223) internal successors, (1687), 504 states have internal predecessors, (1687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:05,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 1687 transitions. [2021-06-05 04:51:05,039 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 1687 transitions. Word has length 16 [2021-06-05 04:51:05,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:51:05,039 INFO L482 AbstractCegarLoop]: Abstraction has 505 states and 1687 transitions. [2021-06-05 04:51:05,039 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:05,039 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 1687 transitions. [2021-06-05 04:51:05,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-06-05 04:51:05,041 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:51:05,041 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:51:05,041 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-06-05 04:51:05,041 INFO L430 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:51:05,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:51:05,041 INFO L82 PathProgramCache]: Analyzing trace with hash 648487496, now seen corresponding path program 3 times [2021-06-05 04:51:05,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:51:05,041 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302056125] [2021-06-05 04:51:05,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:51:05,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:51:05,135 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 04:51:05,136 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:51:05,136 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302056125] [2021-06-05 04:51:05,136 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302056125] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:51:05,136 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:51:05,136 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 04:51:05,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514659630] [2021-06-05 04:51:05,136 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 04:51:05,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:51:05,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 04:51:05,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-06-05 04:51:05,137 INFO L87 Difference]: Start difference. First operand 505 states and 1687 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:05,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:51:05,357 INFO L93 Difference]: Finished difference Result 1060 states and 3246 transitions. [2021-06-05 04:51:05,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:51:05,358 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-06-05 04:51:05,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:51:05,360 INFO L225 Difference]: With dead ends: 1060 [2021-06-05 04:51:05,361 INFO L226 Difference]: Without dead ends: 1033 [2021-06-05 04:51:05,361 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 156.4ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-06-05 04:51:05,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1033 states. [2021-06-05 04:51:05,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1033 to 505. [2021-06-05 04:51:05,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 504 states have (on average 3.3472222222222223) internal successors, (1687), 504 states have internal predecessors, (1687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:05,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 1687 transitions. [2021-06-05 04:51:05,377 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 1687 transitions. Word has length 16 [2021-06-05 04:51:05,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:51:05,377 INFO L482 AbstractCegarLoop]: Abstraction has 505 states and 1687 transitions. [2021-06-05 04:51:05,377 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:05,377 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 1687 transitions. [2021-06-05 04:51:05,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-06-05 04:51:05,379 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:51:05,379 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:51:05,379 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-06-05 04:51:05,379 INFO L430 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:51:05,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:51:05,379 INFO L82 PathProgramCache]: Analyzing trace with hash 749508455, now seen corresponding path program 3 times [2021-06-05 04:51:05,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:51:05,379 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426572746] [2021-06-05 04:51:05,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:51:05,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:51:05,609 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 04:51:05,610 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:51:05,610 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426572746] [2021-06-05 04:51:05,610 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426572746] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:51:05,610 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:51:05,610 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 04:51:05,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903528777] [2021-06-05 04:51:05,610 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 04:51:05,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:51:05,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 04:51:05,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-06-05 04:51:05,611 INFO L87 Difference]: Start difference. First operand 505 states and 1687 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:05,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:51:05,742 INFO L93 Difference]: Finished difference Result 821 states and 2570 transitions. [2021-06-05 04:51:05,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 04:51:05,742 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-06-05 04:51:05,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:51:05,744 INFO L225 Difference]: With dead ends: 821 [2021-06-05 04:51:05,744 INFO L226 Difference]: Without dead ends: 794 [2021-06-05 04:51:05,744 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 209.4ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 04:51:05,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2021-06-05 04:51:05,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 505. [2021-06-05 04:51:05,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 504 states have (on average 3.3472222222222223) internal successors, (1687), 504 states have internal predecessors, (1687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:05,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 1687 transitions. [2021-06-05 04:51:05,754 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 1687 transitions. Word has length 16 [2021-06-05 04:51:05,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:51:05,754 INFO L482 AbstractCegarLoop]: Abstraction has 505 states and 1687 transitions. [2021-06-05 04:51:05,754 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:05,754 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 1687 transitions. [2021-06-05 04:51:05,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-06-05 04:51:05,755 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:51:05,755 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:51:05,755 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-06-05 04:51:05,755 INFO L430 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:51:05,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:51:05,756 INFO L82 PathProgramCache]: Analyzing trace with hash -1222989368, now seen corresponding path program 5 times [2021-06-05 04:51:05,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:51:05,756 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556687881] [2021-06-05 04:51:05,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:51:05,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:51:05,810 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 04:51:05,810 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:51:05,810 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556687881] [2021-06-05 04:51:05,810 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556687881] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:51:05,810 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:51:05,810 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 04:51:05,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795588046] [2021-06-05 04:51:05,811 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 04:51:05,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:51:05,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 04:51:05,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-06-05 04:51:05,811 INFO L87 Difference]: Start difference. First operand 505 states and 1687 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:05,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:51:05,938 INFO L93 Difference]: Finished difference Result 891 states and 2762 transitions. [2021-06-05 04:51:05,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-05 04:51:05,938 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-06-05 04:51:05,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:51:05,940 INFO L225 Difference]: With dead ends: 891 [2021-06-05 04:51:05,940 INFO L226 Difference]: Without dead ends: 862 [2021-06-05 04:51:05,940 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 68.7ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-06-05 04:51:05,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 862 states. [2021-06-05 04:51:05,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 862 to 494. [2021-06-05 04:51:05,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 494 states, 493 states have (on average 3.36105476673428) internal successors, (1657), 493 states have internal predecessors, (1657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:05,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 1657 transitions. [2021-06-05 04:51:05,953 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 1657 transitions. Word has length 16 [2021-06-05 04:51:05,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:51:05,953 INFO L482 AbstractCegarLoop]: Abstraction has 494 states and 1657 transitions. [2021-06-05 04:51:05,953 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:05,953 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 1657 transitions. [2021-06-05 04:51:05,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-06-05 04:51:05,954 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:51:05,954 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:51:05,954 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-06-05 04:51:05,954 INFO L430 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:51:05,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:51:05,955 INFO L82 PathProgramCache]: Analyzing trace with hash -248674713, now seen corresponding path program 5 times [2021-06-05 04:51:05,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:51:05,955 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369210515] [2021-06-05 04:51:05,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:51:05,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:51:06,032 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 04:51:06,032 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:51:06,032 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369210515] [2021-06-05 04:51:06,032 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369210515] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:51:06,032 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:51:06,032 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 04:51:06,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948086508] [2021-06-05 04:51:06,033 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 04:51:06,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:51:06,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 04:51:06,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-06-05 04:51:06,033 INFO L87 Difference]: Start difference. First operand 494 states and 1657 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:06,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:51:06,212 INFO L93 Difference]: Finished difference Result 868 states and 2732 transitions. [2021-06-05 04:51:06,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-05 04:51:06,212 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-06-05 04:51:06,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:51:06,214 INFO L225 Difference]: With dead ends: 868 [2021-06-05 04:51:06,214 INFO L226 Difference]: Without dead ends: 828 [2021-06-05 04:51:06,214 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 122.2ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-06-05 04:51:06,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2021-06-05 04:51:06,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 494. [2021-06-05 04:51:06,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 494 states, 493 states have (on average 3.3509127789046653) internal successors, (1652), 493 states have internal predecessors, (1652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:06,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 1652 transitions. [2021-06-05 04:51:06,226 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 1652 transitions. Word has length 16 [2021-06-05 04:51:06,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:51:06,226 INFO L482 AbstractCegarLoop]: Abstraction has 494 states and 1652 transitions. [2021-06-05 04:51:06,226 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:06,226 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 1652 transitions. [2021-06-05 04:51:06,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-06-05 04:51:06,227 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:51:06,227 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:51:06,227 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-06-05 04:51:06,227 INFO L430 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:51:06,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:51:06,228 INFO L82 PathProgramCache]: Analyzing trace with hash -1291259644, now seen corresponding path program 6 times [2021-06-05 04:51:06,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:51:06,228 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848993404] [2021-06-05 04:51:06,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:51:06,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:51:06,294 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 04:51:06,294 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:51:06,294 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848993404] [2021-06-05 04:51:06,295 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848993404] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:51:06,295 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:51:06,295 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 04:51:06,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316377112] [2021-06-05 04:51:06,295 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 04:51:06,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:51:06,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 04:51:06,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-05 04:51:06,296 INFO L87 Difference]: Start difference. First operand 494 states and 1652 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:06,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:51:06,431 INFO L93 Difference]: Finished difference Result 741 states and 2296 transitions. [2021-06-05 04:51:06,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 04:51:06,432 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-06-05 04:51:06,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:51:06,433 INFO L225 Difference]: With dead ends: 741 [2021-06-05 04:51:06,433 INFO L226 Difference]: Without dead ends: 712 [2021-06-05 04:51:06,434 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 120.6ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 04:51:06,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2021-06-05 04:51:06,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 494. [2021-06-05 04:51:06,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 494 states, 493 states have (on average 3.3509127789046653) internal successors, (1652), 493 states have internal predecessors, (1652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:06,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 1652 transitions. [2021-06-05 04:51:06,445 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 1652 transitions. Word has length 16 [2021-06-05 04:51:06,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:51:06,445 INFO L482 AbstractCegarLoop]: Abstraction has 494 states and 1652 transitions. [2021-06-05 04:51:06,445 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:06,445 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 1652 transitions. [2021-06-05 04:51:06,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-06-05 04:51:06,446 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:51:06,446 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:51:06,446 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-06-05 04:51:06,446 INFO L430 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:51:06,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:51:06,447 INFO L82 PathProgramCache]: Analyzing trace with hash 1392400701, now seen corresponding path program 6 times [2021-06-05 04:51:06,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:51:06,447 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768316740] [2021-06-05 04:51:06,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:51:06,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:51:06,570 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 04:51:06,570 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:51:06,571 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768316740] [2021-06-05 04:51:06,571 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768316740] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:51:06,571 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:51:06,571 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 04:51:06,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208489002] [2021-06-05 04:51:06,571 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 04:51:06,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:51:06,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 04:51:06,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-06-05 04:51:06,572 INFO L87 Difference]: Start difference. First operand 494 states and 1652 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:06,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:51:06,712 INFO L93 Difference]: Finished difference Result 773 states and 2416 transitions. [2021-06-05 04:51:06,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 04:51:06,713 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-06-05 04:51:06,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:51:06,714 INFO L225 Difference]: With dead ends: 773 [2021-06-05 04:51:06,714 INFO L226 Difference]: Without dead ends: 744 [2021-06-05 04:51:06,715 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 127.7ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 04:51:06,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2021-06-05 04:51:06,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 494. [2021-06-05 04:51:06,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 494 states, 493 states have (on average 3.3509127789046653) internal successors, (1652), 493 states have internal predecessors, (1652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:06,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 1652 transitions. [2021-06-05 04:51:06,726 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 1652 transitions. Word has length 16 [2021-06-05 04:51:06,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:51:06,726 INFO L482 AbstractCegarLoop]: Abstraction has 494 states and 1652 transitions. [2021-06-05 04:51:06,726 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:06,726 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 1652 transitions. [2021-06-05 04:51:06,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-06-05 04:51:06,727 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:51:06,727 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:51:06,727 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-06-05 04:51:06,727 INFO L430 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:51:06,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:51:06,728 INFO L82 PathProgramCache]: Analyzing trace with hash 498850876, now seen corresponding path program 4 times [2021-06-05 04:51:06,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:51:06,728 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756924869] [2021-06-05 04:51:06,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:51:06,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:51:06,801 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 04:51:06,801 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:51:06,801 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756924869] [2021-06-05 04:51:06,801 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756924869] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:51:06,801 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:51:06,801 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 04:51:06,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748706243] [2021-06-05 04:51:06,801 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 04:51:06,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:51:06,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 04:51:06,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-06-05 04:51:06,802 INFO L87 Difference]: Start difference. First operand 494 states and 1652 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:06,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:51:06,943 INFO L93 Difference]: Finished difference Result 889 states and 2730 transitions. [2021-06-05 04:51:06,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-05 04:51:06,943 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-06-05 04:51:06,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:51:06,945 INFO L225 Difference]: With dead ends: 889 [2021-06-05 04:51:06,945 INFO L226 Difference]: Without dead ends: 862 [2021-06-05 04:51:06,945 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 99.4ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-06-05 04:51:06,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 862 states. [2021-06-05 04:51:06,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 862 to 494. [2021-06-05 04:51:06,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 494 states, 493 states have (on average 3.3509127789046653) internal successors, (1652), 493 states have internal predecessors, (1652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:06,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 1652 transitions. [2021-06-05 04:51:06,953 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 1652 transitions. Word has length 16 [2021-06-05 04:51:06,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:51:06,954 INFO L482 AbstractCegarLoop]: Abstraction has 494 states and 1652 transitions. [2021-06-05 04:51:06,954 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:06,954 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 1652 transitions. [2021-06-05 04:51:06,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-06-05 04:51:06,954 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:51:06,954 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:51:06,955 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-06-05 04:51:06,955 INFO L430 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:51:06,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:51:06,955 INFO L82 PathProgramCache]: Analyzing trace with hash 637834109, now seen corresponding path program 4 times [2021-06-05 04:51:06,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:51:06,955 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521544774] [2021-06-05 04:51:06,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:51:06,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:51:07,088 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 04:51:07,088 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:51:07,088 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521544774] [2021-06-05 04:51:07,088 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521544774] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:51:07,088 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:51:07,088 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 04:51:07,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846708706] [2021-06-05 04:51:07,089 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 04:51:07,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:51:07,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 04:51:07,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-06-05 04:51:07,090 INFO L87 Difference]: Start difference. First operand 494 states and 1652 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:07,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:51:07,290 INFO L93 Difference]: Finished difference Result 863 states and 2698 transitions. [2021-06-05 04:51:07,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-05 04:51:07,290 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-06-05 04:51:07,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:51:07,292 INFO L225 Difference]: With dead ends: 863 [2021-06-05 04:51:07,292 INFO L226 Difference]: Without dead ends: 830 [2021-06-05 04:51:07,292 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 197.9ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-06-05 04:51:07,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2021-06-05 04:51:07,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 494. [2021-06-05 04:51:07,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 494 states, 493 states have (on average 3.3448275862068964) internal successors, (1649), 493 states have internal predecessors, (1649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:07,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 1649 transitions. [2021-06-05 04:51:07,303 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 1649 transitions. Word has length 16 [2021-06-05 04:51:07,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:51:07,303 INFO L482 AbstractCegarLoop]: Abstraction has 494 states and 1649 transitions. [2021-06-05 04:51:07,303 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:07,303 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 1649 transitions. [2021-06-05 04:51:07,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-06-05 04:51:07,304 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:51:07,304 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:51:07,304 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-06-05 04:51:07,304 INFO L430 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:51:07,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:51:07,305 INFO L82 PathProgramCache]: Analyzing trace with hash -1681413370, now seen corresponding path program 5 times [2021-06-05 04:51:07,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:51:07,305 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920693794] [2021-06-05 04:51:07,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:51:07,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:51:07,344 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 04:51:07,344 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:51:07,344 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920693794] [2021-06-05 04:51:07,345 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920693794] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:51:07,345 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:51:07,345 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 04:51:07,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984680168] [2021-06-05 04:51:07,346 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 04:51:07,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:51:07,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 04:51:07,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-06-05 04:51:07,348 INFO L87 Difference]: Start difference. First operand 494 states and 1649 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:07,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:51:07,433 INFO L93 Difference]: Finished difference Result 731 states and 2291 transitions. [2021-06-05 04:51:07,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 04:51:07,434 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-06-05 04:51:07,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:51:07,435 INFO L225 Difference]: With dead ends: 731 [2021-06-05 04:51:07,435 INFO L226 Difference]: Without dead ends: 704 [2021-06-05 04:51:07,436 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 32.9ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 04:51:07,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2021-06-05 04:51:07,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 494. [2021-06-05 04:51:07,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 494 states, 493 states have (on average 3.3448275862068964) internal successors, (1649), 493 states have internal predecessors, (1649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:07,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 1649 transitions. [2021-06-05 04:51:07,447 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 1649 transitions. Word has length 16 [2021-06-05 04:51:07,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:51:07,447 INFO L482 AbstractCegarLoop]: Abstraction has 494 states and 1649 transitions. [2021-06-05 04:51:07,447 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:07,447 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 1649 transitions. [2021-06-05 04:51:07,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-06-05 04:51:07,448 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:51:07,448 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:51:07,449 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-06-05 04:51:07,449 INFO L430 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:51:07,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:51:07,449 INFO L82 PathProgramCache]: Analyzing trace with hash -1580392411, now seen corresponding path program 5 times [2021-06-05 04:51:07,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:51:07,449 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569626584] [2021-06-05 04:51:07,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:51:07,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:51:07,578 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 04:51:07,578 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:51:07,578 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569626584] [2021-06-05 04:51:07,578 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569626584] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:51:07,578 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:51:07,578 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 04:51:07,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808074530] [2021-06-05 04:51:07,579 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 04:51:07,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:51:07,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 04:51:07,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-06-05 04:51:07,579 INFO L87 Difference]: Start difference. First operand 494 states and 1649 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:07,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:51:07,869 INFO L93 Difference]: Finished difference Result 731 states and 2291 transitions. [2021-06-05 04:51:07,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 04:51:07,869 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-06-05 04:51:07,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:51:07,871 INFO L225 Difference]: With dead ends: 731 [2021-06-05 04:51:07,871 INFO L226 Difference]: Without dead ends: 704 [2021-06-05 04:51:07,871 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 277.4ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:51:07,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2021-06-05 04:51:07,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 494. [2021-06-05 04:51:07,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 494 states, 493 states have (on average 3.3448275862068964) internal successors, (1649), 493 states have internal predecessors, (1649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:07,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 1649 transitions. [2021-06-05 04:51:07,882 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 1649 transitions. Word has length 16 [2021-06-05 04:51:07,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:51:07,882 INFO L482 AbstractCegarLoop]: Abstraction has 494 states and 1649 transitions. [2021-06-05 04:51:07,882 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:07,882 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 1649 transitions. [2021-06-05 04:51:07,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-06-05 04:51:07,883 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:51:07,883 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:51:07,883 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-06-05 04:51:07,884 INFO L430 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:51:07,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:51:07,884 INFO L82 PathProgramCache]: Analyzing trace with hash 784334086, now seen corresponding path program 5 times [2021-06-05 04:51:07,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:51:07,884 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408954498] [2021-06-05 04:51:07,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:51:07,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:51:07,951 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 04:51:07,951 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:51:07,951 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408954498] [2021-06-05 04:51:07,951 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408954498] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:51:07,952 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:51:07,952 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 04:51:07,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576593698] [2021-06-05 04:51:07,952 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 04:51:07,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:51:07,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 04:51:07,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-06-05 04:51:07,952 INFO L87 Difference]: Start difference. First operand 494 states and 1649 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:08,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:51:08,083 INFO L93 Difference]: Finished difference Result 793 states and 2506 transitions. [2021-06-05 04:51:08,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-05 04:51:08,083 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-06-05 04:51:08,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:51:08,084 INFO L225 Difference]: With dead ends: 793 [2021-06-05 04:51:08,084 INFO L226 Difference]: Without dead ends: 770 [2021-06-05 04:51:08,084 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 86.8ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:51:08,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 770 states. [2021-06-05 04:51:08,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 770 to 490. [2021-06-05 04:51:08,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 489 states have (on average 3.347648261758691) internal successors, (1637), 489 states have internal predecessors, (1637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:08,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 1637 transitions. [2021-06-05 04:51:08,093 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 1637 transitions. Word has length 16 [2021-06-05 04:51:08,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:51:08,093 INFO L482 AbstractCegarLoop]: Abstraction has 490 states and 1637 transitions. [2021-06-05 04:51:08,093 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:08,093 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 1637 transitions. [2021-06-05 04:51:08,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-06-05 04:51:08,094 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:51:08,094 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:51:08,094 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-06-05 04:51:08,094 INFO L430 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:51:08,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:51:08,094 INFO L82 PathProgramCache]: Analyzing trace with hash 797847013, now seen corresponding path program 5 times [2021-06-05 04:51:08,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:51:08,095 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713339497] [2021-06-05 04:51:08,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:51:08,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:51:08,241 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 04:51:08,241 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:51:08,241 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713339497] [2021-06-05 04:51:08,241 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713339497] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:51:08,241 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:51:08,241 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 04:51:08,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780737242] [2021-06-05 04:51:08,241 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 04:51:08,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:51:08,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 04:51:08,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-05 04:51:08,242 INFO L87 Difference]: Start difference. First operand 490 states and 1637 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:08,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:51:08,476 INFO L93 Difference]: Finished difference Result 803 states and 2527 transitions. [2021-06-05 04:51:08,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-05 04:51:08,476 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-06-05 04:51:08,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:51:08,478 INFO L225 Difference]: With dead ends: 803 [2021-06-05 04:51:08,478 INFO L226 Difference]: Without dead ends: 776 [2021-06-05 04:51:08,478 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 222.4ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 04:51:08,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 776 states. [2021-06-05 04:51:08,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 776 to 490. [2021-06-05 04:51:08,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 489 states have (on average 3.3435582822085887) internal successors, (1635), 489 states have internal predecessors, (1635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:08,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 1635 transitions. [2021-06-05 04:51:08,488 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 1635 transitions. Word has length 16 [2021-06-05 04:51:08,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:51:08,489 INFO L482 AbstractCegarLoop]: Abstraction has 490 states and 1635 transitions. [2021-06-05 04:51:08,489 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:08,489 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 1635 transitions. [2021-06-05 04:51:08,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-06-05 04:51:08,489 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:51:08,489 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:51:08,489 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-06-05 04:51:08,490 INFO L430 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:51:08,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:51:08,490 INFO L82 PathProgramCache]: Analyzing trace with hash 1214532848, now seen corresponding path program 6 times [2021-06-05 04:51:08,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:51:08,490 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154740] [2021-06-05 04:51:08,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:51:08,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:51:08,651 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:51:08,651 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:51:08,651 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154740] [2021-06-05 04:51:08,652 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154740] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:51:08,652 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331156375] [2021-06-05 04:51:08,652 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 04:51:08,707 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-06-05 04:51:08,708 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 04:51:08,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 04:51:08,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 04:51:08,903 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-06-05 04:51:08,905 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 04:51:08,919 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-06-05 04:51:08,921 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 04:51:09,055 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 42 [2021-06-05 04:51:09,056 INFO L628 ElimStorePlain]: treesize reduction 133, result has 55.2 percent of original size [2021-06-05 04:51:09,062 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 6 xjuncts. [2021-06-05 04:51:09,062 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:311, output treesize:152 [2021-06-05 04:51:09,162 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 04:51:09,164 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 04:51:09,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-06-05 04:51:09,169 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 04:51:09,172 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 25 [2021-06-05 04:51:09,174 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 04:51:09,177 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 04:51:09,178 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 04:51:09,181 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 04:51:09,183 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 04:51:09,186 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 04:51:09,187 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 04:51:09,190 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 04:51:09,191 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 04:51:09,212 INFO L628 ElimStorePlain]: treesize reduction 100, result has 18.0 percent of original size [2021-06-05 04:51:09,212 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 04:51:09,213 INFO L247 ElimStorePlain]: Needed 8 recursive calls to eliminate 1 variables, input treesize:275, output treesize:22 [2021-06-05 04:51:09,237 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-06-05 04:51:09,239 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 04:51:09,243 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 04:51:09,245 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-06-05 04:51:09,250 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 04:51:09,253 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 04:51:09,254 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 04:51:09,254 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:39, output treesize:8 [2021-06-05 04:51:09,307 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 04:51:09,307 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1331156375] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:51:09,307 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-06-05 04:51:09,307 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2021-06-05 04:51:09,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428252450] [2021-06-05 04:51:09,308 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 04:51:09,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:51:09,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 04:51:09,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-06-05 04:51:09,309 INFO L87 Difference]: Start difference. First operand 490 states and 1635 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:09,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:51:09,559 INFO L93 Difference]: Finished difference Result 671 states and 2073 transitions. [2021-06-05 04:51:09,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 04:51:09,559 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-06-05 04:51:09,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:51:09,570 INFO L225 Difference]: With dead ends: 671 [2021-06-05 04:51:09,570 INFO L226 Difference]: Without dead ends: 638 [2021-06-05 04:51:09,571 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 384.6ms TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-06-05 04:51:09,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2021-06-05 04:51:09,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 490. [2021-06-05 04:51:09,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 489 states have (on average 3.339468302658487) internal successors, (1633), 489 states have internal predecessors, (1633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:09,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 1633 transitions. [2021-06-05 04:51:09,586 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 1633 transitions. Word has length 16 [2021-06-05 04:51:09,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:51:09,586 INFO L482 AbstractCegarLoop]: Abstraction has 490 states and 1633 transitions. [2021-06-05 04:51:09,586 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:09,586 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 1633 transitions. [2021-06-05 04:51:09,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-06-05 04:51:09,588 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:51:09,588 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:51:09,804 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2021-06-05 04:51:09,805 INFO L430 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:51:09,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:51:09,805 INFO L82 PathProgramCache]: Analyzing trace with hash 1154290151, now seen corresponding path program 6 times [2021-06-05 04:51:09,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:51:09,805 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576451167] [2021-06-05 04:51:09,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:51:09,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:51:10,005 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 04:51:10,006 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:51:10,006 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576451167] [2021-06-05 04:51:10,006 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576451167] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:51:10,006 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:51:10,006 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 04:51:10,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576248934] [2021-06-05 04:51:10,006 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 04:51:10,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:51:10,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 04:51:10,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-06-05 04:51:10,007 INFO L87 Difference]: Start difference. First operand 490 states and 1633 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:10,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:51:10,251 INFO L93 Difference]: Finished difference Result 708 states and 2212 transitions. [2021-06-05 04:51:10,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 04:51:10,251 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-06-05 04:51:10,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:51:10,253 INFO L225 Difference]: With dead ends: 708 [2021-06-05 04:51:10,253 INFO L226 Difference]: Without dead ends: 685 [2021-06-05 04:51:10,253 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 262.1ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:51:10,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2021-06-05 04:51:10,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 490. [2021-06-05 04:51:10,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 489 states have (on average 3.339468302658487) internal successors, (1633), 489 states have internal predecessors, (1633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:10,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 1633 transitions. [2021-06-05 04:51:10,263 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 1633 transitions. Word has length 16 [2021-06-05 04:51:10,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:51:10,263 INFO L482 AbstractCegarLoop]: Abstraction has 490 states and 1633 transitions. [2021-06-05 04:51:10,264 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:10,264 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 1633 transitions. [2021-06-05 04:51:10,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-06-05 04:51:10,265 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:51:10,265 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:51:10,265 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-06-05 04:51:10,265 INFO L430 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:51:10,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:51:10,265 INFO L82 PathProgramCache]: Analyzing trace with hash -1810256696, now seen corresponding path program 6 times [2021-06-05 04:51:10,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:51:10,265 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585670865] [2021-06-05 04:51:10,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:51:10,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:51:10,312 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 04:51:10,312 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:51:10,312 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585670865] [2021-06-05 04:51:10,312 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585670865] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:51:10,312 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:51:10,313 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 04:51:10,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297878055] [2021-06-05 04:51:10,313 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 04:51:10,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:51:10,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 04:51:10,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-05 04:51:10,313 INFO L87 Difference]: Start difference. First operand 490 states and 1633 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:10,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:51:10,429 INFO L93 Difference]: Finished difference Result 775 states and 2446 transitions. [2021-06-05 04:51:10,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-05 04:51:10,429 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-06-05 04:51:10,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:51:10,430 INFO L225 Difference]: With dead ends: 775 [2021-06-05 04:51:10,431 INFO L226 Difference]: Without dead ends: 748 [2021-06-05 04:51:10,431 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 59.6ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 04:51:10,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2021-06-05 04:51:10,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 484. [2021-06-05 04:51:10,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 483 states have (on average 3.341614906832298) internal successors, (1614), 483 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:10,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 1614 transitions. [2021-06-05 04:51:10,441 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 1614 transitions. Word has length 16 [2021-06-05 04:51:10,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:51:10,441 INFO L482 AbstractCegarLoop]: Abstraction has 484 states and 1614 transitions. [2021-06-05 04:51:10,441 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:10,441 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 1614 transitions. [2021-06-05 04:51:10,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-06-05 04:51:10,442 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:51:10,442 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:51:10,443 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-06-05 04:51:10,443 INFO L430 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:51:10,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:51:10,443 INFO L82 PathProgramCache]: Analyzing trace with hash -1796743769, now seen corresponding path program 6 times [2021-06-05 04:51:10,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:51:10,443 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631608013] [2021-06-05 04:51:10,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:51:10,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:51:10,547 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 04:51:10,547 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:51:10,548 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631608013] [2021-06-05 04:51:10,548 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631608013] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:51:10,548 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:51:10,548 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 04:51:10,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854039552] [2021-06-05 04:51:10,548 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 04:51:10,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:51:10,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 04:51:10,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-06-05 04:51:10,549 INFO L87 Difference]: Start difference. First operand 484 states and 1614 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:10,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:51:10,757 INFO L93 Difference]: Finished difference Result 789 states and 2475 transitions. [2021-06-05 04:51:10,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-05 04:51:10,757 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-06-05 04:51:10,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:51:10,759 INFO L225 Difference]: With dead ends: 789 [2021-06-05 04:51:10,759 INFO L226 Difference]: Without dead ends: 756 [2021-06-05 04:51:10,760 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 171.5ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-06-05 04:51:10,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2021-06-05 04:51:10,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 484. [2021-06-05 04:51:10,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 483 states have (on average 3.3374741200828155) internal successors, (1612), 483 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:10,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 1612 transitions. [2021-06-05 04:51:10,770 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 1612 transitions. Word has length 16 [2021-06-05 04:51:10,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:51:10,770 INFO L482 AbstractCegarLoop]: Abstraction has 484 states and 1612 transitions. [2021-06-05 04:51:10,770 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:10,770 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 1612 transitions. [2021-06-05 04:51:10,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-06-05 04:51:10,771 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:51:10,771 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:51:10,772 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-06-05 04:51:10,772 INFO L430 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:51:10,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:51:10,772 INFO L82 PathProgramCache]: Analyzing trace with hash -1318202505, now seen corresponding path program 1 times [2021-06-05 04:51:10,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:51:10,772 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073682662] [2021-06-05 04:51:10,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:51:10,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:51:10,794 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-05 04:51:10,794 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:51:10,794 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073682662] [2021-06-05 04:51:10,794 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073682662] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:51:10,794 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:51:10,794 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-05 04:51:10,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170094628] [2021-06-05 04:51:10,794 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-05 04:51:10,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:51:10,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-05 04:51:10,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-05 04:51:10,796 INFO L87 Difference]: Start difference. First operand 484 states and 1612 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:10,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:51:10,847 INFO L93 Difference]: Finished difference Result 671 states and 2053 transitions. [2021-06-05 04:51:10,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 04:51:10,847 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-06-05 04:51:10,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:51:10,849 INFO L225 Difference]: With dead ends: 671 [2021-06-05 04:51:10,849 INFO L226 Difference]: Without dead ends: 671 [2021-06-05 04:51:10,850 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-05 04:51:10,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2021-06-05 04:51:10,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 484. [2021-06-05 04:51:10,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 483 states have (on average 3.3374741200828155) internal successors, (1612), 483 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:10,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 1612 transitions. [2021-06-05 04:51:10,859 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 1612 transitions. Word has length 18 [2021-06-05 04:51:10,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:51:10,859 INFO L482 AbstractCegarLoop]: Abstraction has 484 states and 1612 transitions. [2021-06-05 04:51:10,859 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:10,859 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 1612 transitions. [2021-06-05 04:51:10,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-06-05 04:51:10,861 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:51:10,861 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:51:10,861 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-06-05 04:51:10,861 INFO L430 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:51:10,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:51:10,861 INFO L82 PathProgramCache]: Analyzing trace with hash -1664376435, now seen corresponding path program 2 times [2021-06-05 04:51:10,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:51:10,861 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744661927] [2021-06-05 04:51:10,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:51:10,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:51:11,018 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:51:11,018 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:51:11,018 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744661927] [2021-06-05 04:51:11,018 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744661927] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:51:11,019 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738695276] [2021-06-05 04:51:11,019 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 04:51:11,070 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-06-05 04:51:11,071 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 04:51:11,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 6 conjunts are in the unsatisfiable core [2021-06-05 04:51:11,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 04:51:11,144 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 04:51:11,146 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 04:51:11,148 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 04:51:11,149 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 04:51:11,152 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2021-06-05 04:51:11,153 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 04:51:11,167 INFO L628 ElimStorePlain]: treesize reduction 34, result has 29.2 percent of original size [2021-06-05 04:51:11,167 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-05 04:51:11,168 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 1 variables, input treesize:71, output treesize:16 [2021-06-05 04:51:11,194 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-05 04:51:11,194 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [738695276] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:51:11,194 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-06-05 04:51:11,194 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2021-06-05 04:51:11,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551419580] [2021-06-05 04:51:11,195 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-05 04:51:11,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:51:11,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-05 04:51:11,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-06-05 04:51:11,195 INFO L87 Difference]: Start difference. First operand 484 states and 1612 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:11,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:51:11,261 INFO L93 Difference]: Finished difference Result 732 states and 2204 transitions. [2021-06-05 04:51:11,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 04:51:11,261 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-06-05 04:51:11,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:51:11,263 INFO L225 Difference]: With dead ends: 732 [2021-06-05 04:51:11,263 INFO L226 Difference]: Without dead ends: 703 [2021-06-05 04:51:11,263 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 136.6ms TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-06-05 04:51:11,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2021-06-05 04:51:11,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 484. [2021-06-05 04:51:11,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 483 states have (on average 3.3022774327122155) internal successors, (1595), 483 states have internal predecessors, (1595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:11,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 1595 transitions. [2021-06-05 04:51:11,275 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 1595 transitions. Word has length 18 [2021-06-05 04:51:11,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:51:11,276 INFO L482 AbstractCegarLoop]: Abstraction has 484 states and 1595 transitions. [2021-06-05 04:51:11,276 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:11,276 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 1595 transitions. [2021-06-05 04:51:11,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-06-05 04:51:11,277 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:51:11,277 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:51:11,500 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 04:51:11,501 INFO L430 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:51:11,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:51:11,501 INFO L82 PathProgramCache]: Analyzing trace with hash -1681246645, now seen corresponding path program 1 times [2021-06-05 04:51:11,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:51:11,501 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995193924] [2021-06-05 04:51:11,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:51:11,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:51:11,555 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-05 04:51:11,555 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:51:11,555 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995193924] [2021-06-05 04:51:11,555 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995193924] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:51:11,556 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:51:11,556 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 04:51:11,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623673786] [2021-06-05 04:51:11,556 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 04:51:11,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:51:11,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 04:51:11,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-05 04:51:11,557 INFO L87 Difference]: Start difference. First operand 484 states and 1595 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:11,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:51:11,670 INFO L93 Difference]: Finished difference Result 671 states and 2072 transitions. [2021-06-05 04:51:11,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 04:51:11,672 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-06-05 04:51:11,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:51:11,674 INFO L225 Difference]: With dead ends: 671 [2021-06-05 04:51:11,674 INFO L226 Difference]: Without dead ends: 671 [2021-06-05 04:51:11,674 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 56.8ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-06-05 04:51:11,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2021-06-05 04:51:11,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 492. [2021-06-05 04:51:11,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 491 states have (on average 3.3136456211812626) internal successors, (1627), 491 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:11,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 1627 transitions. [2021-06-05 04:51:11,683 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 1627 transitions. Word has length 18 [2021-06-05 04:51:11,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:51:11,683 INFO L482 AbstractCegarLoop]: Abstraction has 492 states and 1627 transitions. [2021-06-05 04:51:11,683 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:11,683 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 1627 transitions. [2021-06-05 04:51:11,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-06-05 04:51:11,684 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:51:11,684 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:51:11,684 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-06-05 04:51:11,684 INFO L430 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:51:11,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:51:11,684 INFO L82 PathProgramCache]: Analyzing trace with hash -7330485, now seen corresponding path program 1 times [2021-06-05 04:51:11,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:51:11,685 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82678330] [2021-06-05 04:51:11,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:51:11,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:51:11,743 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-05 04:51:11,743 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:51:11,743 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82678330] [2021-06-05 04:51:11,743 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82678330] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:51:11,743 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:51:11,743 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 04:51:11,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904878388] [2021-06-05 04:51:11,744 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 04:51:11,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:51:11,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 04:51:11,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-06-05 04:51:11,744 INFO L87 Difference]: Start difference. First operand 492 states and 1627 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:11,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:51:11,863 INFO L93 Difference]: Finished difference Result 750 states and 2306 transitions. [2021-06-05 04:51:11,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-05 04:51:11,863 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-06-05 04:51:11,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:51:11,865 INFO L225 Difference]: With dead ends: 750 [2021-06-05 04:51:11,865 INFO L226 Difference]: Without dead ends: 697 [2021-06-05 04:51:11,865 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 56.2ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 04:51:11,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2021-06-05 04:51:11,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 496. [2021-06-05 04:51:11,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 495 states have (on average 3.319191919191919) internal successors, (1643), 495 states have internal predecessors, (1643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:11,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 1643 transitions. [2021-06-05 04:51:11,874 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 1643 transitions. Word has length 18 [2021-06-05 04:51:11,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:51:11,875 INFO L482 AbstractCegarLoop]: Abstraction has 496 states and 1643 transitions. [2021-06-05 04:51:11,875 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:11,875 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 1643 transitions. [2021-06-05 04:51:11,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-06-05 04:51:11,876 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:51:11,876 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:51:11,876 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-06-05 04:51:11,876 INFO L430 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:51:11,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:51:11,877 INFO L82 PathProgramCache]: Analyzing trace with hash -1406905333, now seen corresponding path program 2 times [2021-06-05 04:51:11,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:51:11,877 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010854796] [2021-06-05 04:51:11,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:51:11,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:51:11,935 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-05 04:51:11,936 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:51:11,936 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010854796] [2021-06-05 04:51:11,936 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010854796] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:51:11,936 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:51:11,936 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 04:51:11,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925367237] [2021-06-05 04:51:11,936 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 04:51:11,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:51:11,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 04:51:11,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-05 04:51:11,937 INFO L87 Difference]: Start difference. First operand 496 states and 1643 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:12,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:51:12,075 INFO L93 Difference]: Finished difference Result 747 states and 2285 transitions. [2021-06-05 04:51:12,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-05 04:51:12,076 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-06-05 04:51:12,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:51:12,077 INFO L225 Difference]: With dead ends: 747 [2021-06-05 04:51:12,077 INFO L226 Difference]: Without dead ends: 696 [2021-06-05 04:51:12,077 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 81.5ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 04:51:12,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2021-06-05 04:51:12,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 496. [2021-06-05 04:51:12,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 495 states have (on average 3.311111111111111) internal successors, (1639), 495 states have internal predecessors, (1639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:12,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 1639 transitions. [2021-06-05 04:51:12,087 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 1639 transitions. Word has length 18 [2021-06-05 04:51:12,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:51:12,087 INFO L482 AbstractCegarLoop]: Abstraction has 496 states and 1639 transitions. [2021-06-05 04:51:12,087 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:12,087 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 1639 transitions. [2021-06-05 04:51:12,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-06-05 04:51:12,088 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:51:12,088 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:51:12,088 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-06-05 04:51:12,088 INFO L430 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:51:12,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:51:12,089 INFO L82 PathProgramCache]: Analyzing trace with hash -1646195509, now seen corresponding path program 2 times [2021-06-05 04:51:12,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:51:12,089 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657507726] [2021-06-05 04:51:12,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:51:12,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:51:12,124 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-05 04:51:12,124 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:51:12,124 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657507726] [2021-06-05 04:51:12,124 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657507726] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:51:12,124 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:51:12,124 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 04:51:12,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431117074] [2021-06-05 04:51:12,125 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 04:51:12,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:51:12,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 04:51:12,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-06-05 04:51:12,125 INFO L87 Difference]: Start difference. First operand 496 states and 1639 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:12,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:51:12,243 INFO L93 Difference]: Finished difference Result 806 states and 2466 transitions. [2021-06-05 04:51:12,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-05 04:51:12,243 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-06-05 04:51:12,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:51:12,244 INFO L225 Difference]: With dead ends: 806 [2021-06-05 04:51:12,244 INFO L226 Difference]: Without dead ends: 732 [2021-06-05 04:51:12,245 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.4ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-06-05 04:51:12,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2021-06-05 04:51:12,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 496. [2021-06-05 04:51:12,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 495 states have (on average 3.294949494949495) internal successors, (1631), 495 states have internal predecessors, (1631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:12,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 1631 transitions. [2021-06-05 04:51:12,254 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 1631 transitions. Word has length 18 [2021-06-05 04:51:12,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:51:12,254 INFO L482 AbstractCegarLoop]: Abstraction has 496 states and 1631 transitions. [2021-06-05 04:51:12,254 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:12,254 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 1631 transitions. [2021-06-05 04:51:12,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-06-05 04:51:12,255 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:51:12,255 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:51:12,255 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-06-05 04:51:12,256 INFO L430 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:51:12,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:51:12,256 INFO L82 PathProgramCache]: Analyzing trace with hash 1677620215, now seen corresponding path program 1 times [2021-06-05 04:51:12,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:51:12,256 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247665029] [2021-06-05 04:51:12,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:51:12,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:51:12,302 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-05 04:51:12,302 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:51:12,302 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247665029] [2021-06-05 04:51:12,302 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247665029] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:51:12,302 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:51:12,302 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 04:51:12,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967975228] [2021-06-05 04:51:12,303 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 04:51:12,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:51:12,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 04:51:12,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-05 04:51:12,303 INFO L87 Difference]: Start difference. First operand 496 states and 1631 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:12,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:51:12,375 INFO L93 Difference]: Finished difference Result 771 states and 2360 transitions. [2021-06-05 04:51:12,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 04:51:12,375 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-06-05 04:51:12,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:51:12,376 INFO L225 Difference]: With dead ends: 771 [2021-06-05 04:51:12,376 INFO L226 Difference]: Without dead ends: 707 [2021-06-05 04:51:12,376 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.8ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-06-05 04:51:12,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2021-06-05 04:51:12,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 496. [2021-06-05 04:51:12,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 495 states have (on average 3.286868686868687) internal successors, (1627), 495 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:12,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 1627 transitions. [2021-06-05 04:51:12,383 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 1627 transitions. Word has length 18 [2021-06-05 04:51:12,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:51:12,383 INFO L482 AbstractCegarLoop]: Abstraction has 496 states and 1627 transitions. [2021-06-05 04:51:12,383 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:12,383 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 1627 transitions. [2021-06-05 04:51:12,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-06-05 04:51:12,384 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:51:12,384 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:51:12,384 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-06-05 04:51:12,384 INFO L430 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:51:12,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:51:12,385 INFO L82 PathProgramCache]: Analyzing trace with hash -787184105, now seen corresponding path program 2 times [2021-06-05 04:51:12,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:51:12,385 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356014148] [2021-06-05 04:51:12,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:51:12,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:51:12,411 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-05 04:51:12,412 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:51:12,412 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356014148] [2021-06-05 04:51:12,412 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356014148] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:51:12,412 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:51:12,412 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 04:51:12,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664912072] [2021-06-05 04:51:12,412 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 04:51:12,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:51:12,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 04:51:12,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-05 04:51:12,413 INFO L87 Difference]: Start difference. First operand 496 states and 1627 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:12,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:51:12,491 INFO L93 Difference]: Finished difference Result 908 states and 2716 transitions. [2021-06-05 04:51:12,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-05 04:51:12,491 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-06-05 04:51:12,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:51:12,493 INFO L225 Difference]: With dead ends: 908 [2021-06-05 04:51:12,493 INFO L226 Difference]: Without dead ends: 855 [2021-06-05 04:51:12,493 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.8ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-06-05 04:51:12,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2021-06-05 04:51:12,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 492. [2021-06-05 04:51:12,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 491 states have (on average 3.2892057026476578) internal successors, (1615), 491 states have internal predecessors, (1615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:12,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 1615 transitions. [2021-06-05 04:51:12,503 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 1615 transitions. Word has length 18 [2021-06-05 04:51:12,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:51:12,503 INFO L482 AbstractCegarLoop]: Abstraction has 492 states and 1615 transitions. [2021-06-05 04:51:12,503 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:12,503 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 1615 transitions. [2021-06-05 04:51:12,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-06-05 04:51:12,504 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:51:12,504 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:51:12,504 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-06-05 04:51:12,504 INFO L430 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:51:12,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:51:12,505 INFO L82 PathProgramCache]: Analyzing trace with hash -1399083479, now seen corresponding path program 1 times [2021-06-05 04:51:12,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:51:12,505 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141197716] [2021-06-05 04:51:12,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:51:12,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:51:12,568 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-05 04:51:12,568 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:51:12,568 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141197716] [2021-06-05 04:51:12,568 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141197716] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:51:12,568 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:51:12,568 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 04:51:12,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319847544] [2021-06-05 04:51:12,569 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 04:51:12,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:51:12,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 04:51:12,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-06-05 04:51:12,569 INFO L87 Difference]: Start difference. First operand 492 states and 1615 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:12,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:51:12,659 INFO L93 Difference]: Finished difference Result 839 states and 2564 transitions. [2021-06-05 04:51:12,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 04:51:12,659 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-06-05 04:51:12,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:51:12,661 INFO L225 Difference]: With dead ends: 839 [2021-06-05 04:51:12,661 INFO L226 Difference]: Without dead ends: 775 [2021-06-05 04:51:12,662 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 46.7ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-06-05 04:51:12,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states. [2021-06-05 04:51:12,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 496. [2021-06-05 04:51:12,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 495 states have (on average 3.2747474747474747) internal successors, (1621), 495 states have internal predecessors, (1621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:12,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 1621 transitions. [2021-06-05 04:51:12,694 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 1621 transitions. Word has length 18 [2021-06-05 04:51:12,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:51:12,695 INFO L482 AbstractCegarLoop]: Abstraction has 496 states and 1621 transitions. [2021-06-05 04:51:12,695 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:12,695 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 1621 transitions. [2021-06-05 04:51:12,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-06-05 04:51:12,696 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:51:12,696 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:51:12,696 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-06-05 04:51:12,696 INFO L430 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:51:12,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:51:12,697 INFO L82 PathProgramCache]: Analyzing trace with hash 506049385, now seen corresponding path program 2 times [2021-06-05 04:51:12,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:51:12,697 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307733517] [2021-06-05 04:51:12,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:51:12,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:51:12,745 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-05 04:51:12,745 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:51:12,745 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307733517] [2021-06-05 04:51:12,745 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307733517] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:51:12,746 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:51:12,746 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 04:51:12,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033096280] [2021-06-05 04:51:12,746 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 04:51:12,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:51:12,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 04:51:12,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-06-05 04:51:12,747 INFO L87 Difference]: Start difference. First operand 496 states and 1621 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:12,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:51:12,839 INFO L93 Difference]: Finished difference Result 841 states and 2567 transitions. [2021-06-05 04:51:12,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 04:51:12,840 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-06-05 04:51:12,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:51:12,841 INFO L225 Difference]: With dead ends: 841 [2021-06-05 04:51:12,841 INFO L226 Difference]: Without dead ends: 784 [2021-06-05 04:51:12,842 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 34.1ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-06-05 04:51:12,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2021-06-05 04:51:12,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 492. [2021-06-05 04:51:12,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 491 states have (on average 3.285132382892057) internal successors, (1613), 491 states have internal predecessors, (1613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:12,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 1613 transitions. [2021-06-05 04:51:12,852 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 1613 transitions. Word has length 18 [2021-06-05 04:51:12,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:51:12,852 INFO L482 AbstractCegarLoop]: Abstraction has 492 states and 1613 transitions. [2021-06-05 04:51:12,852 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:12,852 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 1613 transitions. [2021-06-05 04:51:12,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-06-05 04:51:12,853 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:51:12,853 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:51:12,853 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-06-05 04:51:12,853 INFO L430 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:51:12,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:51:12,854 INFO L82 PathProgramCache]: Analyzing trace with hash -1415879781, now seen corresponding path program 3 times [2021-06-05 04:51:12,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:51:12,854 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845727526] [2021-06-05 04:51:12,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:51:12,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:51:12,873 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-05 04:51:12,873 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:51:12,873 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845727526] [2021-06-05 04:51:12,873 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845727526] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:51:12,873 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:51:12,873 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-05 04:51:12,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880103621] [2021-06-05 04:51:12,873 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-05 04:51:12,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:51:12,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-05 04:51:12,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-05 04:51:12,874 INFO L87 Difference]: Start difference. First operand 492 states and 1613 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:12,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:51:12,922 INFO L93 Difference]: Finished difference Result 600 states and 1829 transitions. [2021-06-05 04:51:12,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 04:51:12,923 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-06-05 04:51:12,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:51:12,924 INFO L225 Difference]: With dead ends: 600 [2021-06-05 04:51:12,924 INFO L226 Difference]: Without dead ends: 600 [2021-06-05 04:51:12,924 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-05 04:51:12,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2021-06-05 04:51:12,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 435. [2021-06-05 04:51:12,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 434 states have (on average 3.230414746543779) internal successors, (1402), 434 states have internal predecessors, (1402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:12,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 1402 transitions. [2021-06-05 04:51:12,932 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 1402 transitions. Word has length 18 [2021-06-05 04:51:12,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:51:12,932 INFO L482 AbstractCegarLoop]: Abstraction has 435 states and 1402 transitions. [2021-06-05 04:51:12,932 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:12,932 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 1402 transitions. [2021-06-05 04:51:12,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-06-05 04:51:12,933 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:51:12,933 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:51:12,933 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-06-05 04:51:12,933 INFO L430 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:51:12,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:51:12,934 INFO L82 PathProgramCache]: Analyzing trace with hash -2075176037, now seen corresponding path program 3 times [2021-06-05 04:51:12,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:51:12,934 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625304564] [2021-06-05 04:51:12,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:51:12,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:51:12,957 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-05 04:51:12,957 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:51:12,958 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625304564] [2021-06-05 04:51:12,958 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625304564] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:51:12,958 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:51:12,958 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 04:51:12,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740755014] [2021-06-05 04:51:12,958 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 04:51:12,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:51:12,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 04:51:12,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-06-05 04:51:12,959 INFO L87 Difference]: Start difference. First operand 435 states and 1402 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:13,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:51:13,028 INFO L93 Difference]: Finished difference Result 586 states and 1779 transitions. [2021-06-05 04:51:13,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 04:51:13,029 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-06-05 04:51:13,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:51:13,030 INFO L225 Difference]: With dead ends: 586 [2021-06-05 04:51:13,030 INFO L226 Difference]: Without dead ends: 522 [2021-06-05 04:51:13,030 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.0ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-06-05 04:51:13,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2021-06-05 04:51:13,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 435. [2021-06-05 04:51:13,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 434 states have (on average 3.2096774193548385) internal successors, (1393), 434 states have internal predecessors, (1393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:13,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 1393 transitions. [2021-06-05 04:51:13,037 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 1393 transitions. Word has length 18 [2021-06-05 04:51:13,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:51:13,037 INFO L482 AbstractCegarLoop]: Abstraction has 435 states and 1393 transitions. [2021-06-05 04:51:13,037 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:13,037 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 1393 transitions. [2021-06-05 04:51:13,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-06-05 04:51:13,038 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:51:13,038 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:51:13,038 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-06-05 04:51:13,038 INFO L430 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:51:13,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:51:13,039 INFO L82 PathProgramCache]: Analyzing trace with hash -567012709, now seen corresponding path program 4 times [2021-06-05 04:51:13,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:51:13,039 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92788092] [2021-06-05 04:51:13,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:51:13,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:51:13,060 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-05 04:51:13,060 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:51:13,060 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92788092] [2021-06-05 04:51:13,061 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92788092] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:51:13,061 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:51:13,061 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-05 04:51:13,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276527253] [2021-06-05 04:51:13,061 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-05 04:51:13,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:51:13,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-05 04:51:13,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-05 04:51:13,061 INFO L87 Difference]: Start difference. First operand 435 states and 1393 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:13,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:51:13,096 INFO L93 Difference]: Finished difference Result 512 states and 1579 transitions. [2021-06-05 04:51:13,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-05 04:51:13,096 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-06-05 04:51:13,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:51:13,097 INFO L225 Difference]: With dead ends: 512 [2021-06-05 04:51:13,097 INFO L226 Difference]: Without dead ends: 502 [2021-06-05 04:51:13,097 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-05 04:51:13,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2021-06-05 04:51:13,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 435. [2021-06-05 04:51:13,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 434 states have (on average 3.19815668202765) internal successors, (1388), 434 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:13,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 1388 transitions. [2021-06-05 04:51:13,102 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 1388 transitions. Word has length 18 [2021-06-05 04:51:13,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:51:13,102 INFO L482 AbstractCegarLoop]: Abstraction has 435 states and 1388 transitions. [2021-06-05 04:51:13,103 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:13,103 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 1388 transitions. [2021-06-05 04:51:13,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-06-05 04:51:13,103 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:51:13,103 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:51:13,103 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-06-05 04:51:13,103 INFO L430 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:51:13,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:51:13,104 INFO L82 PathProgramCache]: Analyzing trace with hash -1494507077, now seen corresponding path program 4 times [2021-06-05 04:51:13,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:51:13,104 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227625852] [2021-06-05 04:51:13,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:51:13,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:51:13,130 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-05 04:51:13,131 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:51:13,131 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227625852] [2021-06-05 04:51:13,131 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227625852] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:51:13,131 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:51:13,131 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 04:51:13,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191492839] [2021-06-05 04:51:13,131 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 04:51:13,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:51:13,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 04:51:13,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-06-05 04:51:13,132 INFO L87 Difference]: Start difference. First operand 435 states and 1388 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:13,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:51:13,192 INFO L93 Difference]: Finished difference Result 565 states and 1707 transitions. [2021-06-05 04:51:13,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 04:51:13,192 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-06-05 04:51:13,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:51:13,193 INFO L225 Difference]: With dead ends: 565 [2021-06-05 04:51:13,193 INFO L226 Difference]: Without dead ends: 512 [2021-06-05 04:51:13,194 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.7ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-06-05 04:51:13,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2021-06-05 04:51:13,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 435. [2021-06-05 04:51:13,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 434 states have (on average 3.1889400921658986) internal successors, (1384), 434 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:13,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 1384 transitions. [2021-06-05 04:51:13,201 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 1384 transitions. Word has length 18 [2021-06-05 04:51:13,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:51:13,201 INFO L482 AbstractCegarLoop]: Abstraction has 435 states and 1384 transitions. [2021-06-05 04:51:13,201 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:13,201 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 1384 transitions. [2021-06-05 04:51:13,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-06-05 04:51:13,202 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:51:13,202 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:51:13,202 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-06-05 04:51:13,202 INFO L430 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:51:13,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:51:13,203 INFO L82 PathProgramCache]: Analyzing trace with hash -1398789765, now seen corresponding path program 1 times [2021-06-05 04:51:13,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:51:13,203 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525111797] [2021-06-05 04:51:13,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:51:13,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:51:13,230 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-05 04:51:13,231 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:51:13,231 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525111797] [2021-06-05 04:51:13,231 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525111797] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:51:13,231 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:51:13,231 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 04:51:13,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052641761] [2021-06-05 04:51:13,231 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 04:51:13,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:51:13,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 04:51:13,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-06-05 04:51:13,232 INFO L87 Difference]: Start difference. First operand 435 states and 1384 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:13,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:51:13,304 INFO L93 Difference]: Finished difference Result 553 states and 1679 transitions. [2021-06-05 04:51:13,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 04:51:13,304 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-06-05 04:51:13,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:51:13,305 INFO L225 Difference]: With dead ends: 553 [2021-06-05 04:51:13,305 INFO L226 Difference]: Without dead ends: 488 [2021-06-05 04:51:13,305 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.0ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-06-05 04:51:13,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2021-06-05 04:51:13,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 435. [2021-06-05 04:51:13,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 434 states have (on average 3.1797235023041477) internal successors, (1380), 434 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:13,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 1380 transitions. [2021-06-05 04:51:13,312 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 1380 transitions. Word has length 18 [2021-06-05 04:51:13,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:51:13,313 INFO L482 AbstractCegarLoop]: Abstraction has 435 states and 1380 transitions. [2021-06-05 04:51:13,313 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:13,313 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 1380 transitions. [2021-06-05 04:51:13,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-06-05 04:51:13,314 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:51:13,314 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:51:13,314 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-06-05 04:51:13,314 INFO L430 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:51:13,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:51:13,314 INFO L82 PathProgramCache]: Analyzing trace with hash -840014107, now seen corresponding path program 3 times [2021-06-05 04:51:13,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:51:13,314 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315834181] [2021-06-05 04:51:13,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:51:13,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:51:13,441 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 04:51:13,441 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:51:13,441 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315834181] [2021-06-05 04:51:13,441 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315834181] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:51:13,441 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089074425] [2021-06-05 04:51:13,441 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 04:51:13,482 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-06-05 04:51:13,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 04:51:13,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 11 conjunts are in the unsatisfiable core [2021-06-05 04:51:13,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 04:51:13,511 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 04:51:13,512 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 04:51:13,516 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 04:51:13,517 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 04:51:13,521 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 04:51:13,522 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 04:51:13,525 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 04:51:13,526 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 04:51:13,564 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 04:51:13,566 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-06-05 04:51:13,566 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 1 variables, input treesize:189, output treesize:161 [2021-06-05 04:51:13,697 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-05 04:51:13,697 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1089074425] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:51:13,697 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-06-05 04:51:13,697 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 8 [2021-06-05 04:51:13,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176001643] [2021-06-05 04:51:13,698 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-05 04:51:13,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:51:13,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-05 04:51:13,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:51:13,699 INFO L87 Difference]: Start difference. First operand 435 states and 1380 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:13,833 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2021-06-05 04:51:13,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:51:13,886 INFO L93 Difference]: Finished difference Result 587 states and 1717 transitions. [2021-06-05 04:51:13,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 04:51:13,886 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-06-05 04:51:13,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:51:13,887 INFO L225 Difference]: With dead ends: 587 [2021-06-05 04:51:13,887 INFO L226 Difference]: Without dead ends: 587 [2021-06-05 04:51:13,887 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 270.9ms TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-06-05 04:51:13,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2021-06-05 04:51:13,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 398. [2021-06-05 04:51:13,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 397 states have (on average 3.146095717884131) internal successors, (1249), 397 states have internal predecessors, (1249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:13,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 1249 transitions. [2021-06-05 04:51:13,894 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 1249 transitions. Word has length 18 [2021-06-05 04:51:13,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:51:13,894 INFO L482 AbstractCegarLoop]: Abstraction has 398 states and 1249 transitions. [2021-06-05 04:51:13,895 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:13,895 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 1249 transitions. [2021-06-05 04:51:13,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-06-05 04:51:13,895 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:51:13,896 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:51:14,100 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 04:51:14,101 INFO L430 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:51:14,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:51:14,101 INFO L82 PathProgramCache]: Analyzing trace with hash -1838197275, now seen corresponding path program 3 times [2021-06-05 04:51:14,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:51:14,101 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387332357] [2021-06-05 04:51:14,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:51:14,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:51:14,135 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-05 04:51:14,135 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:51:14,136 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387332357] [2021-06-05 04:51:14,136 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387332357] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:51:14,136 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:51:14,136 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 04:51:14,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264741291] [2021-06-05 04:51:14,136 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 04:51:14,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:51:14,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 04:51:14,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-06-05 04:51:14,137 INFO L87 Difference]: Start difference. First operand 398 states and 1249 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:14,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:51:14,225 INFO L93 Difference]: Finished difference Result 670 states and 1949 transitions. [2021-06-05 04:51:14,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-05 04:51:14,226 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-06-05 04:51:14,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:51:14,227 INFO L225 Difference]: With dead ends: 670 [2021-06-05 04:51:14,227 INFO L226 Difference]: Without dead ends: 606 [2021-06-05 04:51:14,227 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.9ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-06-05 04:51:14,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2021-06-05 04:51:14,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 398. [2021-06-05 04:51:14,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 397 states have (on average 3.123425692695214) internal successors, (1240), 397 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:14,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 1240 transitions. [2021-06-05 04:51:14,233 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 1240 transitions. Word has length 18 [2021-06-05 04:51:14,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:51:14,233 INFO L482 AbstractCegarLoop]: Abstraction has 398 states and 1240 transitions. [2021-06-05 04:51:14,233 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:14,233 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 1240 transitions. [2021-06-05 04:51:14,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-06-05 04:51:14,234 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:51:14,234 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:51:14,234 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-06-05 04:51:14,234 INFO L430 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:51:14,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:51:14,234 INFO L82 PathProgramCache]: Analyzing trace with hash -197121861, now seen corresponding path program 4 times [2021-06-05 04:51:14,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:51:14,234 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641495233] [2021-06-05 04:51:14,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:51:14,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:51:14,278 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-05 04:51:14,278 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:51:14,278 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641495233] [2021-06-05 04:51:14,279 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641495233] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:51:14,279 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:51:14,279 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 04:51:14,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527902862] [2021-06-05 04:51:14,279 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 04:51:14,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:51:14,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 04:51:14,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-05 04:51:14,279 INFO L87 Difference]: Start difference. First operand 398 states and 1240 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:14,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:51:14,417 INFO L93 Difference]: Finished difference Result 625 states and 1812 transitions. [2021-06-05 04:51:14,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-05 04:51:14,418 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-06-05 04:51:14,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:51:14,419 INFO L225 Difference]: With dead ends: 625 [2021-06-05 04:51:14,419 INFO L226 Difference]: Without dead ends: 580 [2021-06-05 04:51:14,419 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.3ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 04:51:14,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2021-06-05 04:51:14,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 402. [2021-06-05 04:51:14,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 401 states have (on average 3.1321695760598502) internal successors, (1256), 401 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:14,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 1256 transitions. [2021-06-05 04:51:14,426 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 1256 transitions. Word has length 18 [2021-06-05 04:51:14,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:51:14,426 INFO L482 AbstractCegarLoop]: Abstraction has 402 states and 1256 transitions. [2021-06-05 04:51:14,426 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:14,426 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 1256 transitions. [2021-06-05 04:51:14,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-06-05 04:51:14,427 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:51:14,427 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:51:14,427 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-06-05 04:51:14,428 INFO L430 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:51:14,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:51:14,428 INFO L82 PathProgramCache]: Analyzing trace with hash -951688453, now seen corresponding path program 4 times [2021-06-05 04:51:14,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:51:14,428 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383058492] [2021-06-05 04:51:14,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:51:14,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:51:14,498 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 04:51:14,498 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:51:14,498 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383058492] [2021-06-05 04:51:14,498 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383058492] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:51:14,498 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2101717264] [2021-06-05 04:51:14,498 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 04:51:14,547 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 04:51:14,547 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 04:51:14,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 11 conjunts are in the unsatisfiable core [2021-06-05 04:51:14,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 04:51:14,661 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 04:51:14,662 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 04:51:14,709 INFO L628 ElimStorePlain]: treesize reduction 68, result has 51.4 percent of original size [2021-06-05 04:51:14,712 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 04:51:14,714 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 04:51:14,716 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 04:51:14,717 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 04:51:14,720 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 04:51:14,721 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 04:51:14,724 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 04:51:14,725 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 04:51:14,734 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 04:51:14,735 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-06-05 04:51:14,736 INFO L247 ElimStorePlain]: Needed 6 recursive calls to eliminate 2 variables, input treesize:149, output treesize:42 [2021-06-05 04:51:14,772 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-05 04:51:14,773 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2101717264] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:51:14,773 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-06-05 04:51:14,773 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 8 [2021-06-05 04:51:14,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632841060] [2021-06-05 04:51:14,773 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-05 04:51:14,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:51:14,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-05 04:51:14,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:51:14,773 INFO L87 Difference]: Start difference. First operand 402 states and 1256 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:14,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:51:14,847 INFO L93 Difference]: Finished difference Result 517 states and 1522 transitions. [2021-06-05 04:51:14,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 04:51:14,847 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-06-05 04:51:14,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:51:14,848 INFO L225 Difference]: With dead ends: 517 [2021-06-05 04:51:14,848 INFO L226 Difference]: Without dead ends: 507 [2021-06-05 04:51:14,848 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 90.8ms TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-06-05 04:51:14,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2021-06-05 04:51:14,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 402. [2021-06-05 04:51:14,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 401 states have (on average 3.119700748129676) internal successors, (1251), 401 states have internal predecessors, (1251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:14,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 1251 transitions. [2021-06-05 04:51:14,856 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 1251 transitions. Word has length 18 [2021-06-05 04:51:14,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:51:14,856 INFO L482 AbstractCegarLoop]: Abstraction has 402 states and 1251 transitions. [2021-06-05 04:51:14,856 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:14,856 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 1251 transitions. [2021-06-05 04:51:14,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-06-05 04:51:14,857 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:51:14,857 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:51:15,064 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 04:51:15,065 INFO L430 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:51:15,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:51:15,065 INFO L82 PathProgramCache]: Analyzing trace with hash -22925917, now seen corresponding path program 3 times [2021-06-05 04:51:15,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:51:15,065 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469826747] [2021-06-05 04:51:15,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:51:15,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:51:15,096 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-05 04:51:15,096 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:51:15,096 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469826747] [2021-06-05 04:51:15,096 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469826747] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:51:15,096 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:51:15,096 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 04:51:15,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133746037] [2021-06-05 04:51:15,097 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 04:51:15,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:51:15,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 04:51:15,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-05 04:51:15,097 INFO L87 Difference]: Start difference. First operand 402 states and 1251 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:15,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:51:15,190 INFO L93 Difference]: Finished difference Result 660 states and 1900 transitions. [2021-06-05 04:51:15,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-05 04:51:15,190 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-06-05 04:51:15,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:51:15,191 INFO L225 Difference]: With dead ends: 660 [2021-06-05 04:51:15,191 INFO L226 Difference]: Without dead ends: 607 [2021-06-05 04:51:15,191 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.4ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 04:51:15,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2021-06-05 04:51:15,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 386. [2021-06-05 04:51:15,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 3.083116883116883) internal successors, (1187), 385 states have internal predecessors, (1187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:15,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1187 transitions. [2021-06-05 04:51:15,196 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1187 transitions. Word has length 18 [2021-06-05 04:51:15,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:51:15,196 INFO L482 AbstractCegarLoop]: Abstraction has 386 states and 1187 transitions. [2021-06-05 04:51:15,196 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:15,196 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1187 transitions. [2021-06-05 04:51:15,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-06-05 04:51:15,197 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:51:15,197 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:51:15,197 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-06-05 04:51:15,197 INFO L430 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:51:15,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:51:15,197 INFO L82 PathProgramCache]: Analyzing trace with hash -1939653789, now seen corresponding path program 5 times [2021-06-05 04:51:15,198 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:51:15,198 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196748029] [2021-06-05 04:51:15,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:51:15,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:51:15,231 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-05 04:51:15,232 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:51:15,232 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196748029] [2021-06-05 04:51:15,232 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196748029] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:51:15,232 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:51:15,232 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 04:51:15,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931359530] [2021-06-05 04:51:15,232 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 04:51:15,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:51:15,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 04:51:15,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-06-05 04:51:15,233 INFO L87 Difference]: Start difference. First operand 386 states and 1187 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:15,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:51:15,329 INFO L93 Difference]: Finished difference Result 656 states and 1884 transitions. [2021-06-05 04:51:15,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-05 04:51:15,329 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-06-05 04:51:15,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:51:15,331 INFO L225 Difference]: With dead ends: 656 [2021-06-05 04:51:15,331 INFO L226 Difference]: Without dead ends: 603 [2021-06-05 04:51:15,331 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.2ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-06-05 04:51:15,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2021-06-05 04:51:15,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 386. [2021-06-05 04:51:15,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 3.0727272727272728) internal successors, (1183), 385 states have internal predecessors, (1183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:15,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1183 transitions. [2021-06-05 04:51:15,338 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1183 transitions. Word has length 18 [2021-06-05 04:51:15,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:51:15,338 INFO L482 AbstractCegarLoop]: Abstraction has 386 states and 1183 transitions. [2021-06-05 04:51:15,338 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:15,338 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1183 transitions. [2021-06-05 04:51:15,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-06-05 04:51:15,339 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:51:15,339 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:51:15,339 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-06-05 04:51:15,339 INFO L430 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:51:15,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:51:15,340 INFO L82 PathProgramCache]: Analyzing trace with hash -1583210651, now seen corresponding path program 6 times [2021-06-05 04:51:15,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:51:15,340 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752876384] [2021-06-05 04:51:15,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:51:15,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:51:15,391 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-05 04:51:15,391 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:51:15,392 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752876384] [2021-06-05 04:51:15,392 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752876384] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:51:15,392 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:51:15,392 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 04:51:15,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915588882] [2021-06-05 04:51:15,392 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 04:51:15,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:51:15,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 04:51:15,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-06-05 04:51:15,392 INFO L87 Difference]: Start difference. First operand 386 states and 1183 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:15,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:51:15,526 INFO L93 Difference]: Finished difference Result 614 states and 1768 transitions. [2021-06-05 04:51:15,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 04:51:15,526 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-06-05 04:51:15,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:51:15,527 INFO L225 Difference]: With dead ends: 614 [2021-06-05 04:51:15,527 INFO L226 Difference]: Without dead ends: 569 [2021-06-05 04:51:15,527 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 81.8ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-06-05 04:51:15,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2021-06-05 04:51:15,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 366. [2021-06-05 04:51:15,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 365 states have (on average 3.021917808219178) internal successors, (1103), 365 states have internal predecessors, (1103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:15,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 1103 transitions. [2021-06-05 04:51:15,534 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 1103 transitions. Word has length 18 [2021-06-05 04:51:15,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:51:15,534 INFO L482 AbstractCegarLoop]: Abstraction has 366 states and 1103 transitions. [2021-06-05 04:51:15,534 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:15,534 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 1103 transitions. [2021-06-05 04:51:15,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-06-05 04:51:15,535 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:51:15,535 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:51:15,535 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-06-05 04:51:15,535 INFO L430 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:51:15,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:51:15,535 INFO L82 PathProgramCache]: Analyzing trace with hash -239277275, now seen corresponding path program 4 times [2021-06-05 04:51:15,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:51:15,535 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539251541] [2021-06-05 04:51:15,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:51:15,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:51:15,569 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-05 04:51:15,569 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:51:15,569 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539251541] [2021-06-05 04:51:15,569 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539251541] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:51:15,569 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:51:15,569 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 04:51:15,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970129158] [2021-06-05 04:51:15,569 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 04:51:15,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:51:15,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 04:51:15,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-06-05 04:51:15,570 INFO L87 Difference]: Start difference. First operand 366 states and 1103 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:15,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:51:15,659 INFO L93 Difference]: Finished difference Result 594 states and 1712 transitions. [2021-06-05 04:51:15,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-05 04:51:15,660 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-06-05 04:51:15,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:51:15,661 INFO L225 Difference]: With dead ends: 594 [2021-06-05 04:51:15,661 INFO L226 Difference]: Without dead ends: 529 [2021-06-05 04:51:15,661 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.1ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-06-05 04:51:15,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2021-06-05 04:51:15,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 366. [2021-06-05 04:51:15,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 365 states have (on average 3.010958904109589) internal successors, (1099), 365 states have internal predecessors, (1099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:15,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 1099 transitions. [2021-06-05 04:51:15,670 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 1099 transitions. Word has length 18 [2021-06-05 04:51:15,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:51:15,670 INFO L482 AbstractCegarLoop]: Abstraction has 366 states and 1099 transitions. [2021-06-05 04:51:15,670 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:15,670 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 1099 transitions. [2021-06-05 04:51:15,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-06-05 04:51:15,671 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:51:15,671 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:51:15,671 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-06-05 04:51:15,671 INFO L430 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:51:15,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:51:15,671 INFO L82 PathProgramCache]: Analyzing trace with hash 2092843429, now seen corresponding path program 5 times [2021-06-05 04:51:15,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:51:15,672 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335839650] [2021-06-05 04:51:15,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:51:15,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:51:15,721 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-05 04:51:15,722 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:51:15,722 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335839650] [2021-06-05 04:51:15,722 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335839650] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:51:15,722 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:51:15,722 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 04:51:15,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950757846] [2021-06-05 04:51:15,722 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 04:51:15,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:51:15,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 04:51:15,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-06-05 04:51:15,723 INFO L87 Difference]: Start difference. First operand 366 states and 1099 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:15,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:51:15,798 INFO L93 Difference]: Finished difference Result 697 states and 2027 transitions. [2021-06-05 04:51:15,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 04:51:15,799 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-06-05 04:51:15,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:51:15,800 INFO L225 Difference]: With dead ends: 697 [2021-06-05 04:51:15,800 INFO L226 Difference]: Without dead ends: 623 [2021-06-05 04:51:15,801 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 32.6ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-06-05 04:51:15,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2021-06-05 04:51:15,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 366. [2021-06-05 04:51:15,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 365 states have (on average 2.9972602739726026) internal successors, (1094), 365 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:15,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 1094 transitions. [2021-06-05 04:51:15,809 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 1094 transitions. Word has length 18 [2021-06-05 04:51:15,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:51:15,809 INFO L482 AbstractCegarLoop]: Abstraction has 366 states and 1094 transitions. [2021-06-05 04:51:15,809 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:15,809 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 1094 transitions. [2021-06-05 04:51:15,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-06-05 04:51:15,810 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:51:15,810 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:51:15,810 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-06-05 04:51:15,810 INFO L430 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:51:15,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:51:15,810 INFO L82 PathProgramCache]: Analyzing trace with hash -1216302301, now seen corresponding path program 2 times [2021-06-05 04:51:15,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:51:15,810 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937020511] [2021-06-05 04:51:15,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:51:15,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:51:15,894 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-05 04:51:15,894 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:51:15,894 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937020511] [2021-06-05 04:51:15,895 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937020511] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:51:15,895 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:51:15,895 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 04:51:15,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110940038] [2021-06-05 04:51:15,895 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 04:51:15,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:51:15,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 04:51:15,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-06-05 04:51:15,895 INFO L87 Difference]: Start difference. First operand 366 states and 1094 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:15,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:51:15,975 INFO L93 Difference]: Finished difference Result 719 states and 2083 transitions. [2021-06-05 04:51:15,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-05 04:51:15,976 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-06-05 04:51:15,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:51:15,977 INFO L225 Difference]: With dead ends: 719 [2021-06-05 04:51:15,977 INFO L226 Difference]: Without dead ends: 654 [2021-06-05 04:51:15,977 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 80.9ms TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:51:15,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2021-06-05 04:51:15,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 366. [2021-06-05 04:51:15,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 365 states have (on average 2.989041095890411) internal successors, (1091), 365 states have internal predecessors, (1091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:15,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 1091 transitions. [2021-06-05 04:51:15,995 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 1091 transitions. Word has length 18 [2021-06-05 04:51:15,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:51:15,995 INFO L482 AbstractCegarLoop]: Abstraction has 366 states and 1091 transitions. [2021-06-05 04:51:15,995 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:15,995 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 1091 transitions. [2021-06-05 04:51:15,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-06-05 04:51:15,996 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:51:15,996 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:51:15,996 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-06-05 04:51:15,996 INFO L430 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:51:15,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:51:15,997 INFO L82 PathProgramCache]: Analyzing trace with hash -797807489, now seen corresponding path program 6 times [2021-06-05 04:51:15,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:51:15,997 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199669000] [2021-06-05 04:51:15,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:51:16,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:51:16,059 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-05 04:51:16,060 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:51:16,060 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199669000] [2021-06-05 04:51:16,060 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199669000] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:51:16,060 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:51:16,060 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 04:51:16,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599218097] [2021-06-05 04:51:16,060 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 04:51:16,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:51:16,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 04:51:16,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-06-05 04:51:16,061 INFO L87 Difference]: Start difference. First operand 366 states and 1091 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:16,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:51:16,117 INFO L93 Difference]: Finished difference Result 639 states and 1854 transitions. [2021-06-05 04:51:16,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 04:51:16,117 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-06-05 04:51:16,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:51:16,118 INFO L225 Difference]: With dead ends: 639 [2021-06-05 04:51:16,118 INFO L226 Difference]: Without dead ends: 567 [2021-06-05 04:51:16,118 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 43.6ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-06-05 04:51:16,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2021-06-05 04:51:16,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 359. [2021-06-05 04:51:16,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 358 states have (on average 3.0083798882681565) internal successors, (1077), 358 states have internal predecessors, (1077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:16,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 1077 transitions. [2021-06-05 04:51:16,124 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 1077 transitions. Word has length 18 [2021-06-05 04:51:16,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:51:16,124 INFO L482 AbstractCegarLoop]: Abstraction has 359 states and 1077 transitions. [2021-06-05 04:51:16,124 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:16,124 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 1077 transitions. [2021-06-05 04:51:16,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-06-05 04:51:16,125 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:51:16,125 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:51:16,125 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-06-05 04:51:16,125 INFO L430 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:51:16,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:51:16,126 INFO L82 PathProgramCache]: Analyzing trace with hash 2015137509, now seen corresponding path program 5 times [2021-06-05 04:51:16,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:51:16,126 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023513212] [2021-06-05 04:51:16,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:51:16,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:51:16,197 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:51:16,198 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:51:16,198 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023513212] [2021-06-05 04:51:16,198 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023513212] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:51:16,198 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1802667242] [2021-06-05 04:51:16,198 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 04:51:16,248 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 04:51:16,248 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 04:51:16,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjunts are in the unsatisfiable core [2021-06-05 04:51:16,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 04:51:16,318 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 04:51:16,319 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 04:51:16,321 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 04:51:16,322 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 04:51:16,325 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 04:51:16,326 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-05 04:51:16,326 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:32, output treesize:16 [2021-06-05 04:51:16,352 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-05 04:51:16,352 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1802667242] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:51:16,352 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-06-05 04:51:16,352 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2021-06-05 04:51:16,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226940374] [2021-06-05 04:51:16,352 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-05 04:51:16,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:51:16,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-05 04:51:16,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-06-05 04:51:16,353 INFO L87 Difference]: Start difference. First operand 359 states and 1077 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:16,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:51:16,386 INFO L93 Difference]: Finished difference Result 384 states and 1115 transitions. [2021-06-05 04:51:16,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-05 04:51:16,387 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-06-05 04:51:16,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:51:16,387 INFO L225 Difference]: With dead ends: 384 [2021-06-05 04:51:16,388 INFO L226 Difference]: Without dead ends: 376 [2021-06-05 04:51:16,388 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 87.2ms TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-06-05 04:51:16,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2021-06-05 04:51:16,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 357. [2021-06-05 04:51:16,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 356 states have (on average 3.00561797752809) internal successors, (1070), 356 states have internal predecessors, (1070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:16,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 1070 transitions. [2021-06-05 04:51:16,393 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 1070 transitions. Word has length 18 [2021-06-05 04:51:16,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:51:16,393 INFO L482 AbstractCegarLoop]: Abstraction has 357 states and 1070 transitions. [2021-06-05 04:51:16,393 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:16,393 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 1070 transitions. [2021-06-05 04:51:16,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-06-05 04:51:16,394 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:51:16,394 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:51:16,612 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2021-06-05 04:51:16,613 INFO L430 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:51:16,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:51:16,613 INFO L82 PathProgramCache]: Analyzing trace with hash 325544227, now seen corresponding path program 5 times [2021-06-05 04:51:16,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:51:16,613 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842092426] [2021-06-05 04:51:16,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:51:16,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:51:16,689 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:51:16,690 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:51:16,690 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842092426] [2021-06-05 04:51:16,690 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842092426] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:51:16,690 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098011184] [2021-06-05 04:51:16,690 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 04:51:16,731 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 04:51:16,731 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 04:51:16,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-05 04:51:16,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 04:51:16,880 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2021-06-05 04:51:16,976 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 04:51:16,977 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 04:51:16,980 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 04:51:16,982 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 04:51:16,985 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 04:51:16,986 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 04:51:16,989 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-06-05 04:51:16,990 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 04:51:16,993 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-06-05 04:51:16,994 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 04:51:17,032 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 04:51:17,036 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-06-05 04:51:17,041 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 04:51:17,072 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 04:51:17,078 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 04:51:17,078 INFO L247 ElimStorePlain]: Needed 7 recursive calls to eliminate 2 variables, input treesize:178, output treesize:130 [2021-06-05 04:51:17,164 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-06-05 04:51:17,165 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 04:51:17,167 INFO L628 ElimStorePlain]: treesize reduction 13, result has 7.1 percent of original size [2021-06-05 04:51:17,167 INFO L518 ElimStorePlain]: Eliminatee last_index_of_7 vanished before elimination [2021-06-05 04:51:17,168 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 04:51:17,168 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:1 [2021-06-05 04:51:17,176 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-05 04:51:17,176 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1098011184] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:51:17,177 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-06-05 04:51:17,177 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2021-06-05 04:51:17,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699568737] [2021-06-05 04:51:17,177 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-05 04:51:17,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:51:17,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-05 04:51:17,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-06-05 04:51:17,177 INFO L87 Difference]: Start difference. First operand 357 states and 1070 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:17,381 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 70 [2021-06-05 04:51:17,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:51:17,408 INFO L93 Difference]: Finished difference Result 422 states and 1218 transitions. [2021-06-05 04:51:17,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-05 04:51:17,408 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-06-05 04:51:17,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:51:17,409 INFO L225 Difference]: With dead ends: 422 [2021-06-05 04:51:17,409 INFO L226 Difference]: Without dead ends: 414 [2021-06-05 04:51:17,409 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 420.0ms TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-06-05 04:51:17,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2021-06-05 04:51:17,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 359. [2021-06-05 04:51:17,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 358 states have (on average 2.9972067039106145) internal successors, (1073), 358 states have internal predecessors, (1073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:17,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 1073 transitions. [2021-06-05 04:51:17,415 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 1073 transitions. Word has length 18 [2021-06-05 04:51:17,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:51:17,415 INFO L482 AbstractCegarLoop]: Abstraction has 359 states and 1073 transitions. [2021-06-05 04:51:17,415 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:17,415 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 1073 transitions. [2021-06-05 04:51:17,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-06-05 04:51:17,416 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:51:17,416 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:51:17,616 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 04:51:17,616 INFO L430 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:51:17,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:51:17,617 INFO L82 PathProgramCache]: Analyzing trace with hash -954484251, now seen corresponding path program 6 times [2021-06-05 04:51:17,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:51:17,617 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265605598] [2021-06-05 04:51:17,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:51:17,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:51:17,692 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:51:17,693 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:51:17,693 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265605598] [2021-06-05 04:51:17,693 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265605598] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:51:17,693 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767220456] [2021-06-05 04:51:17,693 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 04:51:17,739 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-06-05 04:51:17,739 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 04:51:17,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-05 04:51:17,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 04:51:17,935 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2021-06-05 04:51:18,017 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-06-05 04:51:18,018 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 04:51:18,064 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 04:51:18,067 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-06-05 04:51:18,072 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 04:51:18,075 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 04:51:18,076 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 04:51:18,079 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 04:51:18,080 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 04:51:18,082 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 04:51:18,083 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 04:51:18,085 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-06-05 04:51:18,086 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 04:51:18,118 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 04:51:18,119 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 04:51:18,119 INFO L247 ElimStorePlain]: Needed 7 recursive calls to eliminate 2 variables, input treesize:174, output treesize:119 [2021-06-05 04:51:18,215 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-06-05 04:51:18,216 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 04:51:18,219 INFO L628 ElimStorePlain]: treesize reduction 36, result has 2.7 percent of original size [2021-06-05 04:51:18,219 INFO L518 ElimStorePlain]: Eliminatee index_of_8 vanished before elimination [2021-06-05 04:51:18,219 INFO L518 ElimStorePlain]: Eliminatee last_index_of_7 vanished before elimination [2021-06-05 04:51:18,220 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 04:51:18,220 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:42, output treesize:1 [2021-06-05 04:51:18,227 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-05 04:51:18,228 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1767220456] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:51:18,228 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-06-05 04:51:18,228 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2021-06-05 04:51:18,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353406316] [2021-06-05 04:51:18,228 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-05 04:51:18,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:51:18,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-05 04:51:18,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-06-05 04:51:18,229 INFO L87 Difference]: Start difference. First operand 359 states and 1073 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:18,424 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 67 [2021-06-05 04:51:18,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:51:18,435 INFO L93 Difference]: Finished difference Result 369 states and 1088 transitions. [2021-06-05 04:51:18,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-05 04:51:18,435 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-06-05 04:51:18,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:51:18,436 INFO L225 Difference]: With dead ends: 369 [2021-06-05 04:51:18,436 INFO L226 Difference]: Without dead ends: 357 [2021-06-05 04:51:18,436 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 440.7ms TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-06-05 04:51:18,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2021-06-05 04:51:18,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 357. [2021-06-05 04:51:18,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 356 states have (on average 3.002808988764045) internal successors, (1069), 356 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:18,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 1069 transitions. [2021-06-05 04:51:18,440 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 1069 transitions. Word has length 18 [2021-06-05 04:51:18,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:51:18,440 INFO L482 AbstractCegarLoop]: Abstraction has 357 states and 1069 transitions. [2021-06-05 04:51:18,440 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:18,440 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 1069 transitions. [2021-06-05 04:51:18,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 04:51:18,441 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:51:18,441 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:51:18,641 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2021-06-05 04:51:18,641 INFO L430 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:51:18,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:51:18,642 INFO L82 PathProgramCache]: Analyzing trace with hash -1134434440, now seen corresponding path program 1 times [2021-06-05 04:51:18,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:51:18,642 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430224980] [2021-06-05 04:51:18,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:51:18,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:51:18,716 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 04:51:18,716 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:51:18,716 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430224980] [2021-06-05 04:51:18,716 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430224980] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:51:18,716 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163194664] [2021-06-05 04:51:18,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 04:51:18,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:51:18,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 16 conjunts are in the unsatisfiable core [2021-06-05 04:51:18,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 04:51:18,963 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 04:51:18,964 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [163194664] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:51:18,964 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 04:51:18,964 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-06-05 04:51:18,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956441991] [2021-06-05 04:51:18,964 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 04:51:18,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:51:18,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 04:51:18,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-06-05 04:51:18,965 INFO L87 Difference]: Start difference. First operand 357 states and 1069 transitions. Second operand has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:19,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:51:19,640 INFO L93 Difference]: Finished difference Result 674 states and 1943 transitions. [2021-06-05 04:51:19,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 04:51:19,640 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 04:51:19,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:51:19,641 INFO L225 Difference]: With dead ends: 674 [2021-06-05 04:51:19,641 INFO L226 Difference]: Without dead ends: 559 [2021-06-05 04:51:19,641 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 591.0ms TimeCoverageRelationStatistics Valid=205, Invalid=787, Unknown=0, NotChecked=0, Total=992 [2021-06-05 04:51:19,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2021-06-05 04:51:19,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 425. [2021-06-05 04:51:19,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 424 states have (on average 3.0377358490566038) internal successors, (1288), 424 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:19,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 1288 transitions. [2021-06-05 04:51:19,646 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 1288 transitions. Word has length 20 [2021-06-05 04:51:19,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:51:19,647 INFO L482 AbstractCegarLoop]: Abstraction has 425 states and 1288 transitions. [2021-06-05 04:51:19,647 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:51:19,647 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 1288 transitions. [2021-06-05 04:51:19,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 04:51:19,647 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:51:19,647 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:51:19,848 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable116 [2021-06-05 04:51:19,848 INFO L430 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:51:19,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:51:19,848 INFO L82 PathProgramCache]: Analyzing trace with hash -1560950788, now seen corresponding path program 2 times [2021-06-05 04:51:19,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:51:19,848 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678564262] [2021-06-05 04:51:19,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:51:19,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:51:19,941 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 04:51:19,942 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:51:19,942 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678564262] [2021-06-05 04:51:19,942 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678564262] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:51:19,942 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [889448205] [2021-06-05 04:51:19,942 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 04:51:19,989 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 04:51:19,989 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 04:51:19,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 16 conjunts are in the unsatisfiable core [2021-06-05 04:51:19,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 04:51:29,078 WARN L205 SmtUtils]: Spent 8.93 s on a formula simplification. DAG size of input: 101 DAG size of output: 65 [2021-06-05 04:51:29,673 WARN L205 SmtUtils]: Spent 536.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2021-06-05 04:51:34,963 WARN L205 SmtUtils]: Spent 5.29 s on a formula simplification. DAG size of input: 57 DAG size of output: 66 [2021-06-05 04:51:35,185 WARN L205 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 52 [2021-06-05 04:51:36,246 WARN L205 SmtUtils]: Spent 697.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 50 [2021-06-05 04:51:37,193 WARN L205 SmtUtils]: Spent 908.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 50 [2021-06-05 04:53:45,110 WARN L205 SmtUtils]: Spent 2.13 m on a formula simplification. DAG size of input: 46 DAG size of output: 58 [2021-06-05 04:53:45,347 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2021-06-05 04:53:45,834 WARN L205 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 41 [2021-06-05 04:53:46,085 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 36 [2021-06-05 04:53:47,008 WARN L205 SmtUtils]: Spent 837.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2021-06-05 04:53:47,479 WARN L205 SmtUtils]: Spent 410.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 41 [2021-06-05 04:53:51,824 WARN L205 SmtUtils]: Spent 4.35 s on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2021-06-05 04:53:52,393 WARN L205 SmtUtils]: Spent 553.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 43 [2021-06-05 04:54:20,881 WARN L205 SmtUtils]: Spent 28.49 s on a formula simplification. DAG size of input: 63 DAG size of output: 67 [2021-06-05 04:54:22,185 WARN L205 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 56 DAG size of output: 56 [2021-06-05 04:54:23,224 WARN L205 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 45 DAG size of output: 45 [2021-06-05 04:54:23,697 WARN L205 SmtUtils]: Spent 471.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 46 [2021-06-05 04:54:23,956 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 39 [2021-06-05 04:54:24,142 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2021-06-05 04:54:24,326 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2021-06-05 04:54:24,721 WARN L205 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2021-06-05 04:54:25,597 WARN L205 SmtUtils]: Spent 875.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 45 [2021-06-05 04:54:25,758 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 57 [2021-06-05 04:54:48,599 WARN L205 SmtUtils]: Spent 22.84 s on a formula simplification. DAG size of input: 57 DAG size of output: 65 [2021-06-05 04:54:48,851 WARN L205 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 52 [2021-06-05 04:54:49,350 WARN L205 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 53 [2021-06-05 04:54:49,545 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 50 [2021-06-05 04:54:55,808 WARN L205 SmtUtils]: Spent 6.26 s on a formula simplification. DAG size of input: 46 DAG size of output: 57 [2021-06-05 04:54:56,548 WARN L205 SmtUtils]: Spent 509.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2021-06-05 04:54:56,650 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 41 [2021-06-05 04:54:56,811 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 41 [2021-06-05 04:54:57,344 WARN L205 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2021-06-05 04:54:57,549 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 41 [2021-06-05 04:55:01,781 WARN L205 SmtUtils]: Spent 4.14 s on a formula simplification. DAG size of input: 57 DAG size of output: 57 [2021-06-05 04:55:02,387 WARN L205 SmtUtils]: Spent 604.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 43 [2021-06-05 04:57:46,958 WARN L205 SmtUtils]: Spent 2.74 m on a formula simplification. DAG size of input: 68 DAG size of output: 68 [2021-06-05 04:57:47,253 WARN L205 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 56 [2021-06-05 04:57:47,681 WARN L205 SmtUtils]: Spent 427.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 57 [2021-06-05 04:57:48,452 WARN L205 SmtUtils]: Spent 733.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 46 [2021-06-05 04:57:48,668 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 39 [2021-06-05 04:57:48,800 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 39 [2021-06-05 04:57:49,026 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2021-06-05 04:57:49,330 WARN L205 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2021-06-05 04:57:49,537 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 45 [2021-06-05 04:57:51,921 WARN L205 SmtUtils]: Spent 2.37 s on a formula simplification. DAG size of input: 62 DAG size of output: 73 [2021-06-05 04:57:52,278 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 45 [2021-06-05 04:57:52,828 WARN L205 SmtUtils]: Spent 471.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 50 [2021-06-05 04:57:53,049 WARN L205 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 50 [2021-06-05 04:57:53,456 WARN L205 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 51 [2021-06-05 04:57:53,711 WARN L205 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 45 [2021-06-05 04:57:54,423 WARN L205 SmtUtils]: Spent 710.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 46 [2021-06-05 04:57:54,849 WARN L205 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 39 [2021-06-05 04:57:55,522 WARN L205 SmtUtils]: Spent 640.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 45 [2021-06-05 04:57:55,748 WARN L205 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2021-06-05 04:57:56,118 WARN L205 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2021-06-05 04:57:56,308 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 45 [2021-06-05 04:57:56,548 WARN L205 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 57 [2021-06-05 04:57:57,286 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 50 [2021-06-05 04:57:57,939 WARN L205 SmtUtils]: Spent 531.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 56 [2021-06-05 04:57:58,538 WARN L205 SmtUtils]: Spent 562.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 55 [2021-06-05 04:57:58,666 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2021-06-05 04:57:58,796 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 45 [2021-06-05 04:58:00,230 WARN L205 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 46 DAG size of output: 46 [2021-06-05 04:58:00,589 WARN L205 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2021-06-05 04:58:01,380 WARN L205 SmtUtils]: Spent 726.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2021-06-05 04:58:01,614 WARN L205 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 45 [2021-06-05 04:58:03,051 WARN L205 SmtUtils]: Spent 1.44 s on a formula simplification. DAG size of input: 46 DAG size of output: 46 [2021-06-05 04:58:03,368 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 39 [2021-06-05 04:58:03,854 WARN L205 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2021-06-05 04:58:04,184 WARN L205 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 50 [2021-06-05 04:58:05,196 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 43 [2021-06-05 04:58:05,428 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 43 [2021-06-05 04:58:05,870 WARN L205 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2021-06-05 04:58:06,447 WARN L205 SmtUtils]: Spent 576.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2021-06-05 04:58:06,596 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2021-06-05 04:58:54,819 WARN L205 SmtUtils]: Spent 48.22 s on a formula simplification. DAG size of input: 71 DAG size of output: 75 [2021-06-05 04:58:55,016 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 61 [2021-06-05 04:58:56,334 WARN L205 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 61 DAG size of output: 61 [2021-06-05 04:58:56,380 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_1, char_at_5], 1=[char_at_1]} [2021-06-05 04:58:56,387 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:56,388 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:56,394 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:58:56,395 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:56,406 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:56,407 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:56,412 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:56,412 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:56,428 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:56,429 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:56,436 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:56,436 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:56,443 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:56,443 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:56,449 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:56,450 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:56,458 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:56,459 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:56,465 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:56,466 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:56,475 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:58:56,476 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:56,484 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:58:56,486 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:56,494 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:56,495 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:56,502 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:56,505 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:56,513 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:56,513 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:56,519 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:56,520 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:56,526 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:56,526 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:56,533 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:56,533 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:56,539 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:56,539 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:56,544 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:56,545 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:56,549 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:56,550 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:56,554 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:56,555 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:56,561 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:58:56,562 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:56,566 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:56,567 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:56,572 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:56,573 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:56,577 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:56,578 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:56,583 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:56,584 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:56,589 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:56,589 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:56,594 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:56,595 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:56,599 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:56,600 INFO L550 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:56,607 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:58:56,609 INFO L550 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:56,614 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:56,615 INFO L550 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:56,620 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:56,620 INFO L550 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:56,626 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:58:56,627 INFO L550 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:56,632 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:56,633 INFO L550 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:56,638 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 04:58:56,639 INFO L550 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:56,643 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:56,644 INFO L550 ElimStorePlain]: Start of recursive call 38: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:56,649 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:56,650 INFO L550 ElimStorePlain]: Start of recursive call 39: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:56,654 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:56,654 INFO L550 ElimStorePlain]: Start of recursive call 40: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:56,660 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:56,660 INFO L550 ElimStorePlain]: Start of recursive call 41: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:56,666 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:56,667 INFO L550 ElimStorePlain]: Start of recursive call 42: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:56,671 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:56,672 INFO L550 ElimStorePlain]: Start of recursive call 43: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:56,677 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:56,677 INFO L550 ElimStorePlain]: Start of recursive call 44: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:56,682 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:56,683 INFO L550 ElimStorePlain]: Start of recursive call 45: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:56,687 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:56,688 INFO L550 ElimStorePlain]: Start of recursive call 46: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:56,692 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:56,693 INFO L550 ElimStorePlain]: Start of recursive call 47: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:56,697 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:56,698 INFO L550 ElimStorePlain]: Start of recursive call 48: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:56,702 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:56,703 INFO L550 ElimStorePlain]: Start of recursive call 49: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:56,707 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:56,708 INFO L550 ElimStorePlain]: Start of recursive call 50: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:56,712 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:56,713 INFO L550 ElimStorePlain]: Start of recursive call 51: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:56,718 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:56,719 INFO L550 ElimStorePlain]: Start of recursive call 52: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:56,723 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:56,724 INFO L550 ElimStorePlain]: Start of recursive call 53: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:56,728 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:56,729 INFO L550 ElimStorePlain]: Start of recursive call 54: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:56,733 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:56,734 INFO L550 ElimStorePlain]: Start of recursive call 55: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:56,738 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:56,739 INFO L550 ElimStorePlain]: Start of recursive call 56: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:56,745 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:56,746 INFO L550 ElimStorePlain]: Start of recursive call 57: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:56,752 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:56,753 INFO L550 ElimStorePlain]: Start of recursive call 58: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:56,760 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:56,761 INFO L550 ElimStorePlain]: Start of recursive call 59: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:56,767 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:56,768 INFO L550 ElimStorePlain]: Start of recursive call 60: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:56,775 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:56,776 INFO L550 ElimStorePlain]: Start of recursive call 61: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:56,781 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:56,782 INFO L550 ElimStorePlain]: Start of recursive call 62: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:56,787 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:56,788 INFO L550 ElimStorePlain]: Start of recursive call 63: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:56,794 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:56,794 INFO L550 ElimStorePlain]: Start of recursive call 64: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:56,800 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:56,801 INFO L550 ElimStorePlain]: Start of recursive call 65: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:56,807 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:56,807 INFO L550 ElimStorePlain]: Start of recursive call 66: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:56,814 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:58:56,815 INFO L550 ElimStorePlain]: Start of recursive call 67: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:56,821 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:56,821 INFO L550 ElimStorePlain]: Start of recursive call 68: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:56,828 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:56,829 INFO L550 ElimStorePlain]: Start of recursive call 69: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:56,835 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:56,836 INFO L550 ElimStorePlain]: Start of recursive call 70: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:56,841 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:56,842 INFO L550 ElimStorePlain]: Start of recursive call 71: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:56,847 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:56,848 INFO L550 ElimStorePlain]: Start of recursive call 72: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:56,854 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:56,854 INFO L550 ElimStorePlain]: Start of recursive call 73: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:56,860 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:56,861 INFO L550 ElimStorePlain]: Start of recursive call 74: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:56,866 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:56,866 INFO L550 ElimStorePlain]: Start of recursive call 75: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:56,872 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:56,872 INFO L550 ElimStorePlain]: Start of recursive call 76: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:56,877 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:56,877 INFO L550 ElimStorePlain]: Start of recursive call 77: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:56,882 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:56,883 INFO L550 ElimStorePlain]: Start of recursive call 78: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:56,887 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:56,888 INFO L550 ElimStorePlain]: Start of recursive call 79: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:56,895 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:56,896 INFO L550 ElimStorePlain]: Start of recursive call 80: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:56,900 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:56,901 INFO L550 ElimStorePlain]: Start of recursive call 81: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:56,905 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:56,906 INFO L550 ElimStorePlain]: Start of recursive call 82: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:56,910 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:56,911 INFO L550 ElimStorePlain]: Start of recursive call 83: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:57,084 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 44 [2021-06-05 04:58:57,085 INFO L628 ElimStorePlain]: treesize reduction 199, result has 48.3 percent of original size [2021-06-05 04:58:57,091 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:58:57,092 INFO L550 ElimStorePlain]: Start of recursive call 84: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:57,153 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 04:58:57,157 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:58:57,161 INFO L550 ElimStorePlain]: Start of recursive call 85: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:57,163 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:57,164 INFO L550 ElimStorePlain]: Start of recursive call 86: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:57,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:58:57,168 INFO L550 ElimStorePlain]: Start of recursive call 87: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:57,173 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:57,174 INFO L550 ElimStorePlain]: Start of recursive call 88: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:57,177 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:58:57,178 INFO L550 ElimStorePlain]: Start of recursive call 89: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:57,227 INFO L628 ElimStorePlain]: treesize reduction 48, result has 55.1 percent of original size [2021-06-05 04:58:57,228 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 3 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-06-05 04:58:57,228 INFO L247 ElimStorePlain]: Needed 89 recursive calls to eliminate 4 variables, input treesize:3363, output treesize:35 [2021-06-05 04:58:57,360 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 04:58:57,360 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [889448205] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:58:57,360 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 04:58:57,360 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 04:58:57,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285003759] [2021-06-05 04:58:57,361 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 04:58:57,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:58:57,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 04:58:57,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-06-05 04:58:57,361 INFO L87 Difference]: Start difference. First operand 425 states and 1288 transitions. Second operand has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:57,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:58:57,817 INFO L93 Difference]: Finished difference Result 589 states and 1766 transitions. [2021-06-05 04:58:57,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-05 04:58:57,817 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 04:58:57,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:58:57,818 INFO L225 Difference]: With dead ends: 589 [2021-06-05 04:58:57,818 INFO L226 Difference]: Without dead ends: 556 [2021-06-05 04:58:57,818 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 540.1ms TimeCoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2021-06-05 04:58:57,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2021-06-05 04:58:57,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 431. [2021-06-05 04:58:57,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 430 states have (on average 3.067441860465116) internal successors, (1319), 430 states have internal predecessors, (1319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:57,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 1319 transitions. [2021-06-05 04:58:57,823 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 1319 transitions. Word has length 20 [2021-06-05 04:58:57,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:58:57,823 INFO L482 AbstractCegarLoop]: Abstraction has 431 states and 1319 transitions. [2021-06-05 04:58:57,823 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:57,823 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 1319 transitions. [2021-06-05 04:58:57,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 04:58:57,824 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:58:57,824 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:58:58,025 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 04:58:58,026 INFO L430 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:58:58,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:58:58,026 INFO L82 PathProgramCache]: Analyzing trace with hash 1861118922, now seen corresponding path program 3 times [2021-06-05 04:58:58,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:58:58,026 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148240674] [2021-06-05 04:58:58,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:58:58,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:58:58,425 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:58:58,426 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:58:58,426 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148240674] [2021-06-05 04:58:58,426 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148240674] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:58:58,426 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624117731] [2021-06-05 04:58:58,426 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 04:58:58,468 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-06-05 04:58:58,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 04:58:58,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 16 conjunts are in the unsatisfiable core [2021-06-05 04:58:58,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 04:58:58,667 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 04:58:58,668 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:58,672 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:58:58,673 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:58,677 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:58,678 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:58,681 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:58:58,682 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:58,686 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:58,687 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:58,690 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:58,691 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:58,695 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:58:58,696 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:58,699 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:58,700 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:58,704 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:58,704 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:58,707 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:58,708 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:58,711 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:58:58,713 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:58,716 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:58:58,717 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:58,721 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 04:58:58,722 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:58,725 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:58,726 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:58,729 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:58,730 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:58,733 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:58:58,734 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:58,738 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:58,739 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:58,742 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:58,742 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:58,745 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:58,746 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:58,749 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:58,750 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:58,753 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:58,754 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:58,856 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 29 [2021-06-05 04:58:58,856 INFO L628 ElimStorePlain]: treesize reduction 60, result has 63.6 percent of original size [2021-06-05 04:58:58,860 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 3 dim-0 vars, and 4 xjuncts. [2021-06-05 04:58:58,860 INFO L247 ElimStorePlain]: Needed 22 recursive calls to eliminate 2 variables, input treesize:738, output treesize:102 [2021-06-05 04:58:59,002 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:59,003 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:59,006 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:59,007 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:59,043 INFO L628 ElimStorePlain]: treesize reduction 44, result has 48.8 percent of original size [2021-06-05 04:58:59,045 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2021-06-05 04:58:59,045 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:138, output treesize:42 [2021-06-05 04:59:00,075 INFO L446 ElimStorePlain]: Different costs {0=[char_at_9, v_prenex_5], 1=[char_at_5]} [2021-06-05 04:59:00,082 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:00,083 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:00,089 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:00,089 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:00,095 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 04:59:00,096 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:00,102 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:00,102 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:00,107 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:00,108 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:00,114 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:00,114 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:00,120 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:00,121 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:00,127 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:00,127 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:00,133 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:00,134 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:00,139 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:00,140 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:00,146 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:00,146 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:00,152 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:00,153 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:00,158 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:00,159 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:00,164 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:00,165 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:00,169 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:00,170 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:00,175 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:00,176 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:00,182 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:00,183 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:00,188 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:00,189 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:00,193 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:00,194 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:00,199 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:00,200 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:00,205 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:00,206 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:00,211 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:00,211 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:00,216 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:00,217 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:00,221 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:00,222 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:00,227 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:00,227 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:00,232 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:00,233 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:00,237 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:00,238 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:00,242 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:00,243 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:00,247 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:00,247 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:00,251 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:00,252 INFO L550 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:00,256 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:00,257 INFO L550 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:00,261 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:00,262 INFO L550 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:00,267 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:00,267 INFO L550 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:00,271 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:00,272 INFO L550 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:00,277 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:00,278 INFO L550 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:00,282 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:00,283 INFO L550 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:00,287 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:00,287 INFO L550 ElimStorePlain]: Start of recursive call 38: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:00,291 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:00,292 INFO L550 ElimStorePlain]: Start of recursive call 39: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:00,296 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:00,296 INFO L550 ElimStorePlain]: Start of recursive call 40: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:00,299 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:00,300 INFO L550 ElimStorePlain]: Start of recursive call 41: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:00,479 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2021-06-05 04:59:00,479 INFO L628 ElimStorePlain]: treesize reduction 24, result has 88.8 percent of original size [2021-06-05 04:59:00,482 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:00,483 INFO L550 ElimStorePlain]: Start of recursive call 42: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:00,485 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:00,486 INFO L550 ElimStorePlain]: Start of recursive call 43: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:00,559 INFO L628 ElimStorePlain]: treesize reduction 61, result has 63.5 percent of original size [2021-06-05 04:59:00,562 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:00,563 INFO L550 ElimStorePlain]: Start of recursive call 44: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:00,565 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:00,565 INFO L550 ElimStorePlain]: Start of recursive call 45: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:00,567 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:00,568 INFO L550 ElimStorePlain]: Start of recursive call 46: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:00,599 INFO L628 ElimStorePlain]: treesize reduction 22, result has 66.2 percent of original size [2021-06-05 04:59:00,600 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 3 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-05 04:59:00,600 INFO L247 ElimStorePlain]: Needed 46 recursive calls to eliminate 5 variables, input treesize:1706, output treesize:20 [2021-06-05 04:59:00,663 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 04:59:00,663 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1624117731] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:59:00,663 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 04:59:00,663 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 15 [2021-06-05 04:59:00,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932691402] [2021-06-05 04:59:00,663 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 04:59:00,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:59:00,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 04:59:00,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2021-06-05 04:59:00,664 INFO L87 Difference]: Start difference. First operand 431 states and 1319 transitions. Second operand has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:59:01,253 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 82 [2021-06-05 04:59:01,550 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 67 [2021-06-05 04:59:01,699 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-06-05 04:59:01,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:59:01,917 INFO L93 Difference]: Finished difference Result 693 states and 2055 transitions. [2021-06-05 04:59:01,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-05 04:59:01,917 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 04:59:01,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:59:01,918 INFO L225 Difference]: With dead ends: 693 [2021-06-05 04:59:01,918 INFO L226 Difference]: Without dead ends: 617 [2021-06-05 04:59:01,918 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 1310.4ms TimeCoverageRelationStatistics Valid=122, Invalid=528, Unknown=0, NotChecked=0, Total=650 [2021-06-05 04:59:01,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2021-06-05 04:59:01,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 463. [2021-06-05 04:59:01,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 462 states have (on average 3.069264069264069) internal successors, (1418), 462 states have internal predecessors, (1418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:59:01,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 1418 transitions. [2021-06-05 04:59:01,925 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 1418 transitions. Word has length 20 [2021-06-05 04:59:01,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:59:01,925 INFO L482 AbstractCegarLoop]: Abstraction has 463 states and 1418 transitions. [2021-06-05 04:59:01,925 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:59:01,925 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 1418 transitions. [2021-06-05 04:59:01,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 04:59:01,926 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:59:01,926 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:59:02,149 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable528,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 04:59:02,149 INFO L430 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:59:02,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:59:02,149 INFO L82 PathProgramCache]: Analyzing trace with hash -1982079440, now seen corresponding path program 4 times [2021-06-05 04:59:02,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:59:02,149 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618782400] [2021-06-05 04:59:02,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:59:02,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:59:02,246 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 04:59:02,246 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:59:02,246 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618782400] [2021-06-05 04:59:02,246 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618782400] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:59:02,247 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1450585601] [2021-06-05 04:59:02,247 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 04:59:02,280 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 04:59:02,281 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 04:59:02,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 16 conjunts are in the unsatisfiable core [2021-06-05 04:59:02,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 04:59:02,442 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:59:02,442 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1450585601] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:59:02,442 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 04:59:02,442 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-06-05 04:59:02,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760817069] [2021-06-05 04:59:02,443 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 04:59:02,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:59:02,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 04:59:02,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-06-05 04:59:02,443 INFO L87 Difference]: Start difference. First operand 463 states and 1418 transitions. Second operand has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:59:03,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:59:03,860 INFO L93 Difference]: Finished difference Result 1066 states and 3143 transitions. [2021-06-05 04:59:03,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-05 04:59:03,860 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 04:59:03,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:59:03,861 INFO L225 Difference]: With dead ends: 1066 [2021-06-05 04:59:03,861 INFO L226 Difference]: Without dead ends: 906 [2021-06-05 04:59:03,862 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 426 ImplicationChecksByTransitivity, 1200.7ms TimeCoverageRelationStatistics Valid=301, Invalid=1505, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 04:59:03,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2021-06-05 04:59:03,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 505. [2021-06-05 04:59:03,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 504 states have (on average 3.1011904761904763) internal successors, (1563), 504 states have internal predecessors, (1563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:59:03,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 1563 transitions. [2021-06-05 04:59:03,870 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 1563 transitions. Word has length 20 [2021-06-05 04:59:03,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:59:03,870 INFO L482 AbstractCegarLoop]: Abstraction has 505 states and 1563 transitions. [2021-06-05 04:59:03,870 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:59:03,870 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 1563 transitions. [2021-06-05 04:59:03,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 04:59:03,872 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:59:03,872 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:59:04,084 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable712 [2021-06-05 04:59:04,085 INFO L430 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:59:04,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:59:04,085 INFO L82 PathProgramCache]: Analyzing trace with hash -1695565943, now seen corresponding path program 1 times [2021-06-05 04:59:04,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:59:04,085 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644647600] [2021-06-05 04:59:04,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:59:04,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:59:04,159 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 04:59:04,160 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:59:04,160 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644647600] [2021-06-05 04:59:04,160 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644647600] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:59:04,160 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334122344] [2021-06-05 04:59:04,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 04:59:04,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:59:04,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 18 conjunts are in the unsatisfiable core [2021-06-05 04:59:04,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 04:59:04,280 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:04,281 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:04,284 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:04,285 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:04,289 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:04,290 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:04,292 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:04,293 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:04,296 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:04,296 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:04,299 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:04,300 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:04,302 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:04,303 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:04,306 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:04,306 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:04,309 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:04,310 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:04,313 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:04,314 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:04,317 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:04,317 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:04,320 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:04,321 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:04,323 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:04,324 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:04,326 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:04,327 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:04,329 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:04,330 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:04,332 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:04,333 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:04,335 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:04,336 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:04,338 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:04,339 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:04,341 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:04,341 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:04,394 INFO L628 ElimStorePlain]: treesize reduction 25, result has 73.4 percent of original size [2021-06-05 04:59:04,396 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-06-05 04:59:04,396 INFO L247 ElimStorePlain]: Needed 20 recursive calls to eliminate 1 variables, input treesize:595, output treesize:69 [2021-06-05 04:59:04,862 INFO L446 ElimStorePlain]: Different costs {0=[char_at_9], 1=[char_at_1]} [2021-06-05 04:59:04,867 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:04,868 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:04,873 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:04,874 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:04,878 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:04,879 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:04,884 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:04,885 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:04,890 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:04,890 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:04,895 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:04,896 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:04,899 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:04,900 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:04,905 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:04,906 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:04,910 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:04,911 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:04,916 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:04,918 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:04,922 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:04,923 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:04,927 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:04,929 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:04,935 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:04,936 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:04,941 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:04,942 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:04,947 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:04,948 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:04,952 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:04,953 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:04,958 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:04,959 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:04,962 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:04,963 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:04,966 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:04,967 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:04,970 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:04,970 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:04,973 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:04,974 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:04,977 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:04,978 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:04,982 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:04,983 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:04,987 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:04,987 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:04,991 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:04,992 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:04,996 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:04,997 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:05,000 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:05,001 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:05,004 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:05,005 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:05,008 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:05,008 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:05,011 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:05,012 INFO L550 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:05,015 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:05,016 INFO L550 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:05,018 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:05,019 INFO L550 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:05,022 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:05,022 INFO L550 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:05,025 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:05,025 INFO L550 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:05,028 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:05,028 INFO L550 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:05,031 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:05,032 INFO L550 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:05,124 INFO L628 ElimStorePlain]: treesize reduction 201, result has 34.1 percent of original size [2021-06-05 04:59:05,127 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:05,127 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:05,128 INFO L550 ElimStorePlain]: Start of recursive call 38: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:05,131 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:05,132 INFO L550 ElimStorePlain]: Start of recursive call 39: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:05,134 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:05,134 INFO L550 ElimStorePlain]: Start of recursive call 40: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:05,136 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:05,137 INFO L550 ElimStorePlain]: Start of recursive call 41: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:05,171 INFO L628 ElimStorePlain]: treesize reduction 1, result has 98.0 percent of original size [2021-06-05 04:59:05,171 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-06-05 04:59:05,172 INFO L247 ElimStorePlain]: Needed 41 recursive calls to eliminate 2 variables, input treesize:1671, output treesize:50 [2021-06-05 04:59:05,232 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 04:59:05,232 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [334122344] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:59:05,233 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 04:59:05,233 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 04:59:05,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416220830] [2021-06-05 04:59:05,233 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 04:59:05,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:59:05,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 04:59:05,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-06-05 04:59:05,233 INFO L87 Difference]: Start difference. First operand 505 states and 1563 transitions. Second operand has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:59:06,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:59:06,003 INFO L93 Difference]: Finished difference Result 608 states and 1820 transitions. [2021-06-05 04:59:06,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-05 04:59:06,003 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 04:59:06,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:59:06,004 INFO L225 Difference]: With dead ends: 608 [2021-06-05 04:59:06,005 INFO L226 Difference]: Without dead ends: 515 [2021-06-05 04:59:06,005 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 820.5ms TimeCoverageRelationStatistics Valid=104, Invalid=316, Unknown=0, NotChecked=0, Total=420 [2021-06-05 04:59:06,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2021-06-05 04:59:06,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 477. [2021-06-05 04:59:06,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 477 states, 476 states have (on average 3.1134453781512605) internal successors, (1482), 476 states have internal predecessors, (1482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:59:06,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 1482 transitions. [2021-06-05 04:59:06,012 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 1482 transitions. Word has length 20 [2021-06-05 04:59:06,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:59:06,012 INFO L482 AbstractCegarLoop]: Abstraction has 477 states and 1482 transitions. [2021-06-05 04:59:06,012 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:59:06,012 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 1482 transitions. [2021-06-05 04:59:06,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 04:59:06,013 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:59:06,013 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:59:06,237 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable726,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 04:59:06,237 INFO L430 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:59:06,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:59:06,237 INFO L82 PathProgramCache]: Analyzing trace with hash 544548431, now seen corresponding path program 2 times [2021-06-05 04:59:06,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:59:06,237 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298503496] [2021-06-05 04:59:06,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:59:06,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:59:06,343 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 04:59:06,343 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:59:06,343 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298503496] [2021-06-05 04:59:06,343 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298503496] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:59:06,343 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956386393] [2021-06-05 04:59:06,343 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 04:59:06,392 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 04:59:06,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 04:59:06,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 18 conjunts are in the unsatisfiable core [2021-06-05 04:59:06,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 04:59:06,500 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:06,501 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:06,518 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:06,519 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:06,536 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:06,537 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:06,541 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:06,541 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:06,544 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:06,544 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:06,547 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:06,547 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:06,549 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:06,550 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:06,553 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:06,553 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:06,557 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:06,558 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:06,560 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:06,561 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:06,563 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:06,564 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:06,566 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:06,566 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:06,569 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:06,569 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:06,571 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:06,572 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:06,574 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:06,574 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:06,576 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:06,577 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:06,579 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:06,580 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:06,582 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:06,582 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:06,585 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:06,585 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:06,635 INFO L628 ElimStorePlain]: treesize reduction 25, result has 73.4 percent of original size [2021-06-05 04:59:06,636 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-06-05 04:59:06,636 INFO L247 ElimStorePlain]: Needed 20 recursive calls to eliminate 1 variables, input treesize:595, output treesize:69 [2021-06-05 04:59:07,131 INFO L446 ElimStorePlain]: Different costs {0=[char_at_9], 1=[char_at_1]} [2021-06-05 04:59:07,136 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:07,137 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:07,141 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:07,142 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:07,147 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:07,147 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:07,153 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:07,154 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:07,158 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:07,159 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:07,163 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:07,164 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:07,168 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:07,169 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:07,174 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:07,175 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:07,179 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:07,180 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:07,185 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:07,186 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:07,190 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:07,191 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:07,195 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:07,196 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:07,200 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:07,201 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:07,205 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:07,206 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:07,210 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:07,211 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:07,215 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:07,217 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:07,221 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:07,222 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:07,226 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:07,227 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:07,231 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:07,232 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:07,235 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:07,236 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:07,240 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:07,241 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:07,245 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:07,246 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:07,251 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:07,252 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:07,257 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:07,258 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:07,263 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:07,263 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:07,268 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:07,269 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:07,274 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:07,275 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:07,279 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:07,280 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:07,284 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:07,285 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:07,288 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:07,289 INFO L550 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:07,293 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:07,294 INFO L550 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:07,297 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:07,298 INFO L550 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:07,302 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:07,303 INFO L550 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:07,306 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:07,307 INFO L550 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:07,310 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:07,311 INFO L550 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:07,314 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:07,315 INFO L550 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:07,318 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:07,319 INFO L550 ElimStorePlain]: Start of recursive call 38: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:07,322 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:07,322 INFO L550 ElimStorePlain]: Start of recursive call 39: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:07,435 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 34 [2021-06-05 04:59:07,435 INFO L628 ElimStorePlain]: treesize reduction 201, result has 34.1 percent of original size [2021-06-05 04:59:07,439 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:07,439 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:07,440 INFO L550 ElimStorePlain]: Start of recursive call 40: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:07,443 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:07,444 INFO L550 ElimStorePlain]: Start of recursive call 41: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:07,448 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:07,449 INFO L550 ElimStorePlain]: Start of recursive call 42: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:07,452 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:07,453 INFO L550 ElimStorePlain]: Start of recursive call 43: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:07,497 INFO L628 ElimStorePlain]: treesize reduction 1, result has 98.0 percent of original size [2021-06-05 04:59:07,498 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-06-05 04:59:07,498 INFO L247 ElimStorePlain]: Needed 43 recursive calls to eliminate 2 variables, input treesize:1751, output treesize:50 [2021-06-05 04:59:07,577 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 04:59:07,578 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1956386393] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:59:07,578 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 04:59:07,578 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 04:59:07,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190168542] [2021-06-05 04:59:07,578 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 04:59:07,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:59:07,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 04:59:07,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-06-05 04:59:07,579 INFO L87 Difference]: Start difference. First operand 477 states and 1482 transitions. Second operand has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:59:08,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:59:08,409 INFO L93 Difference]: Finished difference Result 628 states and 1884 transitions. [2021-06-05 04:59:08,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-05 04:59:08,409 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 04:59:08,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:59:08,410 INFO L225 Difference]: With dead ends: 628 [2021-06-05 04:59:08,410 INFO L226 Difference]: Without dead ends: 530 [2021-06-05 04:59:08,410 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 918.9ms TimeCoverageRelationStatistics Valid=98, Invalid=322, Unknown=0, NotChecked=0, Total=420 [2021-06-05 04:59:08,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2021-06-05 04:59:08,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 487. [2021-06-05 04:59:08,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 487 states, 486 states have (on average 3.1316872427983538) internal successors, (1522), 486 states have internal predecessors, (1522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:59:08,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 1522 transitions. [2021-06-05 04:59:08,416 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 1522 transitions. Word has length 20 [2021-06-05 04:59:08,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:59:08,416 INFO L482 AbstractCegarLoop]: Abstraction has 487 states and 1522 transitions. [2021-06-05 04:59:08,416 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:59:08,416 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 1522 transitions. [2021-06-05 04:59:08,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 04:59:08,417 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:59:08,417 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:59:08,617 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable796 [2021-06-05 04:59:08,617 INFO L430 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:59:08,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:59:08,618 INFO L82 PathProgramCache]: Analyzing trace with hash -540273895, now seen corresponding path program 3 times [2021-06-05 04:59:08,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:59:08,618 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602552641] [2021-06-05 04:59:08,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:59:08,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:59:08,715 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 04:59:08,715 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:59:08,715 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602552641] [2021-06-05 04:59:08,715 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602552641] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:59:08,715 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870919568] [2021-06-05 04:59:08,715 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 04:59:08,751 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-06-05 04:59:08,751 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 04:59:08,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 18 conjunts are in the unsatisfiable core [2021-06-05 04:59:08,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 04:59:08,864 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:08,865 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:08,868 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:08,869 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:08,872 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:08,873 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:08,876 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:08,877 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:08,880 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:08,881 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:08,884 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:08,884 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:08,887 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:08,888 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:08,891 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:08,892 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:08,895 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:08,896 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:08,899 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:08,899 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:08,908 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:08,908 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:08,911 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:08,912 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:08,915 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:08,916 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:08,919 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:08,919 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:08,922 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:08,923 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:08,925 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:08,926 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:08,928 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:08,929 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:08,931 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:08,932 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:08,934 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:08,935 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:08,937 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:08,938 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:09,030 INFO L628 ElimStorePlain]: treesize reduction 54, result has 67.3 percent of original size [2021-06-05 04:59:09,031 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 04:59:09,031 INFO L247 ElimStorePlain]: Needed 21 recursive calls to eliminate 1 variables, input treesize:786, output treesize:111 [2021-06-05 04:59:09,275 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:09,276 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:09,281 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:09,281 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:09,285 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:09,286 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:09,290 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:09,291 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:09,294 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:09,295 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:09,299 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:09,300 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:09,305 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 04:59:09,305 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:09,310 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:09,310 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:09,314 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:09,315 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:09,319 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:09,320 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:09,324 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 04:59:09,325 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:09,329 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:09,332 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:09,337 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:09,338 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:09,342 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:09,342 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:09,346 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:09,347 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:09,351 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:09,352 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:09,356 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:09,357 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:09,360 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:09,361 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:09,365 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:09,365 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:09,369 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:09,370 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:09,374 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:09,375 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:09,378 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:09,379 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:09,382 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:09,382 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:09,385 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:09,387 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:09,391 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:09,391 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:09,395 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:09,396 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:09,399 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:09,399 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:09,403 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:09,403 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:09,406 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:09,407 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:09,519 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 34 [2021-06-05 04:59:09,520 INFO L628 ElimStorePlain]: treesize reduction 64, result has 68.8 percent of original size [2021-06-05 04:59:09,523 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:09,524 INFO L550 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:09,526 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:09,527 INFO L550 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:09,529 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:09,530 INFO L550 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:09,532 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:09,532 INFO L550 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:09,534 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:09,535 INFO L550 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:09,573 INFO L628 ElimStorePlain]: treesize reduction 22, result has 69.9 percent of original size [2021-06-05 04:59:09,574 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-06-05 04:59:09,574 INFO L247 ElimStorePlain]: Needed 35 recursive calls to eliminate 2 variables, input treesize:1077, output treesize:51 [2021-06-05 04:59:09,640 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 04:59:09,640 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [870919568] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:59:09,640 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 04:59:09,640 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-06-05 04:59:09,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337165368] [2021-06-05 04:59:09,641 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 04:59:09,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:59:09,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 04:59:09,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-06-05 04:59:09,641 INFO L87 Difference]: Start difference. First operand 487 states and 1522 transitions. Second operand has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:59:09,942 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 35 [2021-06-05 04:59:10,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:59:10,140 INFO L93 Difference]: Finished difference Result 629 states and 1892 transitions. [2021-06-05 04:59:10,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-05 04:59:10,140 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 04:59:10,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:59:10,142 INFO L225 Difference]: With dead ends: 629 [2021-06-05 04:59:10,142 INFO L226 Difference]: Without dead ends: 533 [2021-06-05 04:59:10,142 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 607.8ms TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2021-06-05 04:59:10,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2021-06-05 04:59:10,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 497. [2021-06-05 04:59:10,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 496 states have (on average 3.129032258064516) internal successors, (1552), 496 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:59:10,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 1552 transitions. [2021-06-05 04:59:10,149 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 1552 transitions. Word has length 20 [2021-06-05 04:59:10,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:59:10,149 INFO L482 AbstractCegarLoop]: Abstraction has 497 states and 1552 transitions. [2021-06-05 04:59:10,149 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:59:10,150 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 1552 transitions. [2021-06-05 04:59:10,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 04:59:10,150 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:59:10,151 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:59:10,351 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable895 [2021-06-05 04:59:10,351 INFO L430 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:59:10,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:59:10,352 INFO L82 PathProgramCache]: Analyzing trace with hash 2035077431, now seen corresponding path program 4 times [2021-06-05 04:59:10,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:59:10,352 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270805969] [2021-06-05 04:59:10,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:59:10,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:59:10,451 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 04:59:10,451 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:59:10,452 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270805969] [2021-06-05 04:59:10,452 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270805969] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:59:10,452 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310184201] [2021-06-05 04:59:10,452 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 04:59:10,488 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 04:59:10,488 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 04:59:10,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 18 conjunts are in the unsatisfiable core [2021-06-05 04:59:10,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 04:59:10,555 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:10,557 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:10,560 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:10,562 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:10,565 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:10,567 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:10,570 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:10,571 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:10,575 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:10,576 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:10,579 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:10,580 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:10,584 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:10,584 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:10,588 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:10,589 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:10,592 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:10,594 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:10,597 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:10,598 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:10,601 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:10,602 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:10,605 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:10,606 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:10,611 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:10,612 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:10,624 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:10,625 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:10,629 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:10,629 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:10,633 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:10,634 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:10,637 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:10,637 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:10,640 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:10,641 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:10,754 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 32 [2021-06-05 04:59:10,755 INFO L628 ElimStorePlain]: treesize reduction 54, result has 67.3 percent of original size [2021-06-05 04:59:10,756 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 04:59:10,756 INFO L247 ElimStorePlain]: Needed 19 recursive calls to eliminate 1 variables, input treesize:709, output treesize:111 [2021-06-05 04:59:11,163 INFO L446 ElimStorePlain]: Different costs {0=[char_at_5], 1=[char_at_1]} [2021-06-05 04:59:11,176 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:11,177 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,187 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:11,189 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,200 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:11,201 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,213 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:11,214 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,225 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:11,225 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,236 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:11,237 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,246 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:11,247 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,256 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:11,257 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,269 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:11,270 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,279 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:11,280 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,290 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:11,291 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,301 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:11,302 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,312 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:11,313 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,323 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:11,324 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,336 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:11,336 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,349 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:11,349 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,360 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:11,361 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,371 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:11,372 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,382 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:11,383 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,395 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:11,395 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,404 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:11,405 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,415 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:11,415 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,426 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:11,427 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,436 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:11,436 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,444 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:11,445 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,452 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:11,453 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,463 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:11,464 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,477 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:11,477 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,488 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 04:59:11,489 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,499 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:11,500 INFO L550 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,509 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:11,509 INFO L550 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,518 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:11,519 INFO L550 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,527 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:11,528 INFO L550 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,534 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:11,535 INFO L550 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,541 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:11,542 INFO L550 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,549 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:11,550 INFO L550 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,558 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:11,558 INFO L550 ElimStorePlain]: Start of recursive call 38: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,565 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:11,565 INFO L550 ElimStorePlain]: Start of recursive call 39: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,585 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:11,585 INFO L550 ElimStorePlain]: Start of recursive call 40: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,593 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:11,593 INFO L550 ElimStorePlain]: Start of recursive call 41: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,600 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:11,600 INFO L550 ElimStorePlain]: Start of recursive call 42: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,607 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:11,607 INFO L550 ElimStorePlain]: Start of recursive call 43: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,615 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:11,616 INFO L550 ElimStorePlain]: Start of recursive call 44: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,623 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:11,623 INFO L550 ElimStorePlain]: Start of recursive call 45: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,630 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:11,630 INFO L550 ElimStorePlain]: Start of recursive call 46: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,637 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:11,638 INFO L550 ElimStorePlain]: Start of recursive call 47: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,645 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:11,646 INFO L550 ElimStorePlain]: Start of recursive call 48: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,652 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:11,653 INFO L550 ElimStorePlain]: Start of recursive call 49: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,661 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:11,661 INFO L550 ElimStorePlain]: Start of recursive call 50: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,668 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:11,669 INFO L550 ElimStorePlain]: Start of recursive call 51: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,675 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:11,675 INFO L550 ElimStorePlain]: Start of recursive call 52: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,682 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:11,682 INFO L550 ElimStorePlain]: Start of recursive call 53: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,690 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:11,690 INFO L550 ElimStorePlain]: Start of recursive call 54: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,697 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:11,697 INFO L550 ElimStorePlain]: Start of recursive call 55: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,705 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:11,705 INFO L550 ElimStorePlain]: Start of recursive call 56: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,712 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:11,713 INFO L550 ElimStorePlain]: Start of recursive call 57: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,721 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:11,721 INFO L550 ElimStorePlain]: Start of recursive call 58: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,729 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:11,729 INFO L550 ElimStorePlain]: Start of recursive call 59: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,736 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:11,737 INFO L550 ElimStorePlain]: Start of recursive call 60: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,743 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:11,744 INFO L550 ElimStorePlain]: Start of recursive call 61: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,751 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:11,751 INFO L550 ElimStorePlain]: Start of recursive call 62: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,757 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:11,758 INFO L550 ElimStorePlain]: Start of recursive call 63: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,764 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:11,765 INFO L550 ElimStorePlain]: Start of recursive call 64: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,771 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:11,771 INFO L550 ElimStorePlain]: Start of recursive call 65: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,778 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:11,778 INFO L550 ElimStorePlain]: Start of recursive call 66: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,784 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:11,785 INFO L550 ElimStorePlain]: Start of recursive call 67: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,791 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:11,791 INFO L550 ElimStorePlain]: Start of recursive call 68: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,798 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:11,799 INFO L550 ElimStorePlain]: Start of recursive call 69: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,804 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:11,805 INFO L550 ElimStorePlain]: Start of recursive call 70: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,810 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:11,811 INFO L550 ElimStorePlain]: Start of recursive call 71: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,821 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:11,822 INFO L550 ElimStorePlain]: Start of recursive call 72: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,828 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:11,828 INFO L550 ElimStorePlain]: Start of recursive call 73: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,834 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:11,835 INFO L550 ElimStorePlain]: Start of recursive call 74: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,841 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:11,842 INFO L550 ElimStorePlain]: Start of recursive call 75: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,848 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:11,849 INFO L550 ElimStorePlain]: Start of recursive call 76: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,855 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:11,855 INFO L550 ElimStorePlain]: Start of recursive call 77: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,861 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:11,862 INFO L550 ElimStorePlain]: Start of recursive call 78: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,867 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:11,868 INFO L550 ElimStorePlain]: Start of recursive call 79: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,874 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:11,876 INFO L550 ElimStorePlain]: Start of recursive call 80: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,882 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:11,883 INFO L550 ElimStorePlain]: Start of recursive call 81: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,888 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:11,889 INFO L550 ElimStorePlain]: Start of recursive call 82: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,895 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:11,895 INFO L550 ElimStorePlain]: Start of recursive call 83: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,901 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:11,902 INFO L550 ElimStorePlain]: Start of recursive call 84: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,908 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:11,909 INFO L550 ElimStorePlain]: Start of recursive call 85: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,915 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:11,915 INFO L550 ElimStorePlain]: Start of recursive call 86: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,921 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:11,921 INFO L550 ElimStorePlain]: Start of recursive call 87: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,927 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:11,928 INFO L550 ElimStorePlain]: Start of recursive call 88: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,933 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:11,934 INFO L550 ElimStorePlain]: Start of recursive call 89: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,939 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:11,940 INFO L550 ElimStorePlain]: Start of recursive call 90: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,945 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:11,946 INFO L550 ElimStorePlain]: Start of recursive call 91: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,951 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:11,952 INFO L550 ElimStorePlain]: Start of recursive call 92: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,957 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:11,957 INFO L550 ElimStorePlain]: Start of recursive call 93: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,963 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:11,963 INFO L550 ElimStorePlain]: Start of recursive call 94: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,968 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:11,969 INFO L550 ElimStorePlain]: Start of recursive call 95: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,975 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:11,976 INFO L550 ElimStorePlain]: Start of recursive call 96: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,981 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:11,982 INFO L550 ElimStorePlain]: Start of recursive call 97: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,987 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:11,988 INFO L550 ElimStorePlain]: Start of recursive call 98: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,993 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:11,994 INFO L550 ElimStorePlain]: Start of recursive call 99: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:11,999 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:12,000 INFO L550 ElimStorePlain]: Start of recursive call 100: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:12,005 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:12,006 INFO L550 ElimStorePlain]: Start of recursive call 101: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:12,011 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:12,012 INFO L550 ElimStorePlain]: Start of recursive call 102: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:12,033 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:12,034 INFO L550 ElimStorePlain]: Start of recursive call 103: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:12,042 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:12,043 INFO L550 ElimStorePlain]: Start of recursive call 104: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:12,050 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:12,051 INFO L550 ElimStorePlain]: Start of recursive call 105: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:12,060 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:12,061 INFO L550 ElimStorePlain]: Start of recursive call 106: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:12,069 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:12,070 INFO L550 ElimStorePlain]: Start of recursive call 107: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:12,077 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:12,078 INFO L550 ElimStorePlain]: Start of recursive call 108: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:12,085 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:12,086 INFO L550 ElimStorePlain]: Start of recursive call 109: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:12,093 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:12,093 INFO L550 ElimStorePlain]: Start of recursive call 110: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:12,102 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:12,103 INFO L550 ElimStorePlain]: Start of recursive call 111: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:12,110 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:12,110 INFO L550 ElimStorePlain]: Start of recursive call 112: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:12,116 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:12,117 INFO L550 ElimStorePlain]: Start of recursive call 113: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:12,124 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:12,125 INFO L550 ElimStorePlain]: Start of recursive call 114: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:12,130 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:12,131 INFO L550 ElimStorePlain]: Start of recursive call 115: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:12,136 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:12,137 INFO L550 ElimStorePlain]: Start of recursive call 116: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:12,143 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:12,144 INFO L550 ElimStorePlain]: Start of recursive call 117: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:12,150 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:12,151 INFO L550 ElimStorePlain]: Start of recursive call 118: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:12,158 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:12,159 INFO L550 ElimStorePlain]: Start of recursive call 119: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:12,164 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:12,165 INFO L550 ElimStorePlain]: Start of recursive call 120: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:12,348 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2021-06-05 04:59:12,349 INFO L628 ElimStorePlain]: treesize reduction 208, result has 47.3 percent of original size [2021-06-05 04:59:12,353 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:12,354 INFO L550 ElimStorePlain]: Start of recursive call 121: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:12,358 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:12,359 INFO L550 ElimStorePlain]: Start of recursive call 122: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:12,362 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:12,362 INFO L550 ElimStorePlain]: Start of recursive call 123: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:12,365 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:12,366 INFO L550 ElimStorePlain]: Start of recursive call 124: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:12,369 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:12,370 INFO L550 ElimStorePlain]: Start of recursive call 125: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:12,373 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:12,374 INFO L550 ElimStorePlain]: Start of recursive call 126: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:12,443 INFO L628 ElimStorePlain]: treesize reduction 17, result has 84.0 percent of original size [2021-06-05 04:59:12,444 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 04:59:12,444 INFO L247 ElimStorePlain]: Needed 126 recursive calls to eliminate 2 variables, input treesize:5999, output treesize:89 [2021-06-05 04:59:12,571 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 04:59:12,571 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310184201] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:59:12,572 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 04:59:12,572 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-06-05 04:59:12,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627257821] [2021-06-05 04:59:12,572 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 04:59:12,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:59:12,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 04:59:12,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-06-05 04:59:12,572 INFO L87 Difference]: Start difference. First operand 497 states and 1552 transitions. Second operand has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:59:12,836 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 42 [2021-06-05 04:59:13,346 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 35 [2021-06-05 04:59:13,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:59:13,423 INFO L93 Difference]: Finished difference Result 755 states and 2246 transitions. [2021-06-05 04:59:13,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-05 04:59:13,424 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 04:59:13,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:59:13,425 INFO L225 Difference]: With dead ends: 755 [2021-06-05 04:59:13,425 INFO L226 Difference]: Without dead ends: 689 [2021-06-05 04:59:13,425 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 924.9ms TimeCoverageRelationStatistics Valid=96, Invalid=324, Unknown=0, NotChecked=0, Total=420 [2021-06-05 04:59:13,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2021-06-05 04:59:13,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 502. [2021-06-05 04:59:13,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 502 states, 501 states have (on average 3.147704590818363) internal successors, (1577), 501 states have internal predecessors, (1577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:59:13,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 1577 transitions. [2021-06-05 04:59:13,431 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 1577 transitions. Word has length 20 [2021-06-05 04:59:13,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:59:13,431 INFO L482 AbstractCegarLoop]: Abstraction has 502 states and 1577 transitions. [2021-06-05 04:59:13,432 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:59:13,432 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 1577 transitions. [2021-06-05 04:59:13,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 04:59:13,433 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:59:13,433 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:59:13,648 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable929,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 04:59:13,649 INFO L430 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:59:13,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:59:13,649 INFO L82 PathProgramCache]: Analyzing trace with hash 1065415511, now seen corresponding path program 5 times [2021-06-05 04:59:13,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:59:13,649 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598780092] [2021-06-05 04:59:13,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:59:13,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:59:13,760 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 04:59:13,761 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:59:13,761 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598780092] [2021-06-05 04:59:13,761 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598780092] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:59:13,761 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2091339290] [2021-06-05 04:59:13,761 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 04:59:13,803 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 04:59:13,803 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 04:59:13,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 18 conjunts are in the unsatisfiable core [2021-06-05 04:59:13,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 04:59:13,887 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:13,888 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:13,891 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:13,892 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:13,895 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:13,895 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:13,898 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:13,899 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:13,902 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 04:59:13,903 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:13,905 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:13,906 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:13,909 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:13,910 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:13,913 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:13,914 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:13,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:13,918 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:13,921 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:13,922 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:13,925 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:13,925 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:13,928 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:13,928 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:13,931 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:13,931 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:13,934 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:13,935 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:13,938 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:13,939 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:13,941 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:13,942 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:13,945 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:13,946 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:13,948 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:13,949 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:13,951 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:13,951 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:14,007 INFO L628 ElimStorePlain]: treesize reduction 46, result has 60.0 percent of original size [2021-06-05 04:59:14,008 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-06-05 04:59:14,008 INFO L247 ElimStorePlain]: Needed 20 recursive calls to eliminate 1 variables, input treesize:582, output treesize:69 [2021-06-05 04:59:14,287 INFO L446 ElimStorePlain]: Different costs {0=[char_at_1], 1=[char_at_5]} [2021-06-05 04:59:14,293 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:14,293 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:14,299 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:14,300 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:14,305 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:14,305 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:14,309 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:14,310 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:14,315 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:14,316 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:14,321 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:14,322 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:14,343 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:14,344 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:14,349 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:14,350 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:14,355 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:14,356 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:14,361 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:14,362 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:14,366 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:14,367 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:14,371 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:14,371 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:14,376 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:14,377 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:14,381 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:14,382 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:14,387 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:14,387 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:14,392 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:14,393 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:14,398 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:14,399 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:14,403 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:14,404 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:14,409 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:14,409 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:14,414 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:14,414 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:14,419 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:14,419 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:14,423 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:14,424 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:14,428 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:14,429 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:14,433 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:14,434 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:14,438 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:14,439 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:14,443 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:14,443 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:14,447 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:14,447 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:14,451 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:14,451 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:14,455 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:14,455 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:14,459 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:14,459 INFO L550 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:14,463 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:14,464 INFO L550 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:14,467 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:14,468 INFO L550 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:14,471 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:14,472 INFO L550 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:14,475 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:14,476 INFO L550 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:14,479 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:14,479 INFO L550 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:14,482 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:14,483 INFO L550 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:14,606 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 37 [2021-06-05 04:59:14,606 INFO L628 ElimStorePlain]: treesize reduction 72, result has 66.0 percent of original size [2021-06-05 04:59:14,610 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:14,611 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:14,612 INFO L550 ElimStorePlain]: Start of recursive call 38: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:14,616 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:14,616 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:14,617 INFO L550 ElimStorePlain]: Start of recursive call 39: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:14,620 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:14,621 INFO L550 ElimStorePlain]: Start of recursive call 40: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:14,624 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:14,624 INFO L550 ElimStorePlain]: Start of recursive call 41: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:14,676 INFO L628 ElimStorePlain]: treesize reduction 21, result has 74.7 percent of original size [2021-06-05 04:59:14,677 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-06-05 04:59:14,677 INFO L247 ElimStorePlain]: Needed 41 recursive calls to eliminate 2 variables, input treesize:1685, output treesize:62 [2021-06-05 04:59:14,739 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:59:14,739 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2091339290] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:59:14,739 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 04:59:14,739 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-06-05 04:59:14,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471379798] [2021-06-05 04:59:14,740 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 04:59:14,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:59:14,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 04:59:14,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-06-05 04:59:14,744 INFO L87 Difference]: Start difference. First operand 502 states and 1577 transitions. Second operand has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:59:15,176 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 61 [2021-06-05 04:59:16,239 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 64 [2021-06-05 04:59:16,727 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 64 [2021-06-05 04:59:17,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:59:17,549 INFO L93 Difference]: Finished difference Result 743 states and 2200 transitions. [2021-06-05 04:59:17,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-05 04:59:17,549 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 04:59:17,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:59:17,550 INFO L225 Difference]: With dead ends: 743 [2021-06-05 04:59:17,550 INFO L226 Difference]: Without dead ends: 576 [2021-06-05 04:59:17,550 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 671 ImplicationChecksByTransitivity, 2684.3ms TimeCoverageRelationStatistics Valid=572, Invalid=2080, Unknown=0, NotChecked=0, Total=2652 [2021-06-05 04:59:17,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2021-06-05 04:59:17,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 492. [2021-06-05 04:59:17,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 491 states have (on average 3.1568228105906315) internal successors, (1550), 491 states have internal predecessors, (1550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:59:17,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 1550 transitions. [2021-06-05 04:59:17,556 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 1550 transitions. Word has length 20 [2021-06-05 04:59:17,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:59:17,556 INFO L482 AbstractCegarLoop]: Abstraction has 492 states and 1550 transitions. [2021-06-05 04:59:17,556 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:59:17,557 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 1550 transitions. [2021-06-05 04:59:17,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 04:59:17,557 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:59:17,557 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:59:17,760 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1003,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 04:59:17,760 INFO L430 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:59:17,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:59:17,760 INFO L82 PathProgramCache]: Analyzing trace with hash 1999997275, now seen corresponding path program 6 times [2021-06-05 04:59:17,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:59:17,760 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072738619] [2021-06-05 04:59:17,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:59:17,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:59:18,103 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:59:18,103 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:59:18,103 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072738619] [2021-06-05 04:59:18,104 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072738619] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:59:18,104 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532056479] [2021-06-05 04:59:18,104 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 04:59:18,207 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 04:59:18,208 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 04:59:18,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 18 conjunts are in the unsatisfiable core [2021-06-05 04:59:18,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 04:59:18,351 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:18,352 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:18,356 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:18,357 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:18,360 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:18,361 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:18,368 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:18,370 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:18,388 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:18,390 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:18,393 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:18,394 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:18,397 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:18,398 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:18,402 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:18,402 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:18,405 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:18,406 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:18,409 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:18,410 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:18,413 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:18,414 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:18,432 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:18,433 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:18,437 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:18,437 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:18,440 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:18,441 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:18,444 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:18,444 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:18,447 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:18,448 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:18,451 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:18,451 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:18,454 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:18,455 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:18,457 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:18,458 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:18,563 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 28 [2021-06-05 04:59:18,563 INFO L628 ElimStorePlain]: treesize reduction 28, result has 74.3 percent of original size [2021-06-05 04:59:18,564 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-06-05 04:59:18,564 INFO L247 ElimStorePlain]: Needed 20 recursive calls to eliminate 1 variables, input treesize:655, output treesize:81 [2021-06-05 04:59:19,150 INFO L446 ElimStorePlain]: Different costs {0=[char_at_9], 1=[char_at_1]} [2021-06-05 04:59:19,155 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:19,155 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:19,164 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:19,165 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:19,185 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:19,186 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:19,191 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:19,193 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:19,197 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:19,198 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:19,202 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:19,202 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:19,206 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:19,207 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:19,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:19,213 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:19,221 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:19,221 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:19,238 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:19,239 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:19,244 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:19,245 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:19,250 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:19,251 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:19,254 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:19,255 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:19,261 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:19,262 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:19,270 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:19,271 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:19,290 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:19,291 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:19,295 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:19,296 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:19,301 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:19,302 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:19,306 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:19,307 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:19,310 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:19,311 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:19,315 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:19,316 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:19,334 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:19,335 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:19,339 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:19,340 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:19,343 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:19,344 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:19,347 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:19,348 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:19,352 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:19,352 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:19,356 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:19,362 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:19,365 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:19,366 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:19,370 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:19,379 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:19,382 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:19,383 INFO L550 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:19,387 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:19,388 INFO L550 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:19,391 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:19,392 INFO L550 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:19,512 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 34 [2021-06-05 04:59:19,512 INFO L628 ElimStorePlain]: treesize reduction 193, result has 35.0 percent of original size [2021-06-05 04:59:19,516 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:19,516 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:19,517 INFO L550 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:19,520 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:19,521 INFO L550 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:19,524 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:19,524 INFO L550 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:19,527 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:19,528 INFO L550 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:19,571 INFO L628 ElimStorePlain]: treesize reduction 1, result has 98.0 percent of original size [2021-06-05 04:59:19,572 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-06-05 04:59:19,573 INFO L247 ElimStorePlain]: Needed 37 recursive calls to eliminate 2 variables, input treesize:1581, output treesize:50 [2021-06-05 04:59:19,651 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:59:19,651 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [532056479] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:59:19,651 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 04:59:19,651 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 17 [2021-06-05 04:59:19,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775754968] [2021-06-05 04:59:19,652 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 04:59:19,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:59:19,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 04:59:19,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2021-06-05 04:59:19,652 INFO L87 Difference]: Start difference. First operand 492 states and 1550 transitions. Second operand has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 17 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:59:20,543 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2021-06-05 04:59:21,103 WARN L205 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 50 [2021-06-05 04:59:21,243 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2021-06-05 04:59:21,404 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 38 [2021-06-05 04:59:21,802 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 53 [2021-06-05 04:59:21,980 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 45 [2021-06-05 04:59:22,116 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2021-06-05 04:59:22,566 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 42 [2021-06-05 04:59:23,016 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 42 [2021-06-05 04:59:23,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:59:23,043 INFO L93 Difference]: Finished difference Result 911 states and 2668 transitions. [2021-06-05 04:59:23,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 04:59:23,044 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 17 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 04:59:23,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:59:23,045 INFO L225 Difference]: With dead ends: 911 [2021-06-05 04:59:23,045 INFO L226 Difference]: Without dead ends: 765 [2021-06-05 04:59:23,045 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 481 ImplicationChecksByTransitivity, 3376.0ms TimeCoverageRelationStatistics Valid=580, Invalid=1772, Unknown=0, NotChecked=0, Total=2352 [2021-06-05 04:59:23,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2021-06-05 04:59:23,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 539. [2021-06-05 04:59:23,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 538 states have (on average 3.174721189591078) internal successors, (1708), 538 states have internal predecessors, (1708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:59:23,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 1708 transitions. [2021-06-05 04:59:23,055 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 1708 transitions. Word has length 20 [2021-06-05 04:59:23,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:59:23,055 INFO L482 AbstractCegarLoop]: Abstraction has 539 states and 1708 transitions. [2021-06-05 04:59:23,055 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 17 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:59:23,055 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 1708 transitions. [2021-06-05 04:59:23,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 04:59:23,056 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:59:23,056 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:59:23,272 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1060,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 04:59:23,273 INFO L430 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:59:23,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:59:23,273 INFO L82 PathProgramCache]: Analyzing trace with hash -1351621415, now seen corresponding path program 7 times [2021-06-05 04:59:23,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:59:23,273 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689662531] [2021-06-05 04:59:23,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:59:23,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:59:23,372 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:59:23,373 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:59:23,373 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689662531] [2021-06-05 04:59:23,373 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689662531] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:59:23,373 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117130427] [2021-06-05 04:59:23,373 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 04:59:23,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:59:23,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 18 conjunts are in the unsatisfiable core [2021-06-05 04:59:23,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 04:59:23,521 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:23,522 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:23,525 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:23,525 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:23,528 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:23,528 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:23,531 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:23,531 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:23,534 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 04:59:23,534 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:23,537 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:23,537 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:23,540 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:23,541 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:23,543 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:23,544 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:23,547 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:23,548 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:23,550 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:23,551 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:23,553 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:23,554 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:23,556 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:23,557 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:23,559 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:23,559 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:23,562 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:23,563 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:23,565 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:23,566 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:23,568 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:23,569 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:23,571 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:23,571 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:23,573 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:23,574 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:23,576 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:23,576 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:23,626 INFO L628 ElimStorePlain]: treesize reduction 46, result has 60.0 percent of original size [2021-06-05 04:59:23,627 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-06-05 04:59:23,627 INFO L247 ElimStorePlain]: Needed 20 recursive calls to eliminate 1 variables, input treesize:582, output treesize:69 [2021-06-05 04:59:24,394 INFO L446 ElimStorePlain]: Different costs {0=[char_at_1], 1=[char_at_5]} [2021-06-05 04:59:24,403 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:24,405 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:24,412 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:24,413 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:24,421 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:24,422 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:24,430 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:24,431 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:24,439 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:24,440 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:24,448 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:24,449 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:24,457 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:24,457 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:24,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:24,467 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:24,473 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:24,474 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:24,482 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 04:59:24,483 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:24,491 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:24,492 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:24,499 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:24,500 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:24,509 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:24,509 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:24,517 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:24,518 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:24,527 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:24,528 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:24,537 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:24,539 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:24,547 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:24,548 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:24,556 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:24,557 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:24,566 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:24,568 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:24,576 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:24,577 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:24,585 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:24,586 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:24,595 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:24,596 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:24,606 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:24,606 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:24,615 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:24,616 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:24,624 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:24,625 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:24,634 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:24,635 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:24,643 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:24,644 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:24,653 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:24,654 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:24,662 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:24,663 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:24,671 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:24,673 INFO L550 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:24,680 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:24,681 INFO L550 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:24,691 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:24,692 INFO L550 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:24,699 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:24,700 INFO L550 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:24,708 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:24,708 INFO L550 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:24,716 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:24,717 INFO L550 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:24,726 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:24,727 INFO L550 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:24,736 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:24,737 INFO L550 ElimStorePlain]: Start of recursive call 38: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:24,744 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:24,745 INFO L550 ElimStorePlain]: Start of recursive call 39: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:24,753 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:24,755 INFO L550 ElimStorePlain]: Start of recursive call 40: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:24,761 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:24,762 INFO L550 ElimStorePlain]: Start of recursive call 41: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:24,767 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:24,768 INFO L550 ElimStorePlain]: Start of recursive call 42: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:24,774 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:24,774 INFO L550 ElimStorePlain]: Start of recursive call 43: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:24,780 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:24,780 INFO L550 ElimStorePlain]: Start of recursive call 44: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:24,786 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:24,787 INFO L550 ElimStorePlain]: Start of recursive call 45: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:24,791 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:24,792 INFO L550 ElimStorePlain]: Start of recursive call 46: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:24,797 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:24,798 INFO L550 ElimStorePlain]: Start of recursive call 47: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:24,804 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:24,804 INFO L550 ElimStorePlain]: Start of recursive call 48: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:24,809 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:24,810 INFO L550 ElimStorePlain]: Start of recursive call 49: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:24,815 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:24,816 INFO L550 ElimStorePlain]: Start of recursive call 50: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:24,821 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:24,821 INFO L550 ElimStorePlain]: Start of recursive call 51: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:24,826 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:24,827 INFO L550 ElimStorePlain]: Start of recursive call 52: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:24,831 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:24,832 INFO L550 ElimStorePlain]: Start of recursive call 53: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:24,836 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:24,837 INFO L550 ElimStorePlain]: Start of recursive call 54: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:24,842 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:24,843 INFO L550 ElimStorePlain]: Start of recursive call 55: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:24,847 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:24,848 INFO L550 ElimStorePlain]: Start of recursive call 56: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:24,853 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:24,854 INFO L550 ElimStorePlain]: Start of recursive call 57: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:24,859 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:24,859 INFO L550 ElimStorePlain]: Start of recursive call 58: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:24,864 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:24,865 INFO L550 ElimStorePlain]: Start of recursive call 59: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:24,870 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:24,870 INFO L550 ElimStorePlain]: Start of recursive call 60: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:24,875 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:24,876 INFO L550 ElimStorePlain]: Start of recursive call 61: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:24,883 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:24,884 INFO L550 ElimStorePlain]: Start of recursive call 62: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:24,891 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:24,892 INFO L550 ElimStorePlain]: Start of recursive call 63: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:24,897 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:24,898 INFO L550 ElimStorePlain]: Start of recursive call 64: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:24,902 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:24,903 INFO L550 ElimStorePlain]: Start of recursive call 65: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:24,908 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:24,909 INFO L550 ElimStorePlain]: Start of recursive call 66: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:24,913 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:24,914 INFO L550 ElimStorePlain]: Start of recursive call 67: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:24,918 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:24,919 INFO L550 ElimStorePlain]: Start of recursive call 68: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:24,923 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:24,923 INFO L550 ElimStorePlain]: Start of recursive call 69: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:24,927 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:24,928 INFO L550 ElimStorePlain]: Start of recursive call 70: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:24,932 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:24,932 INFO L550 ElimStorePlain]: Start of recursive call 71: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:24,936 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:24,937 INFO L550 ElimStorePlain]: Start of recursive call 72: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:24,941 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:24,942 INFO L550 ElimStorePlain]: Start of recursive call 73: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:24,946 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:24,947 INFO L550 ElimStorePlain]: Start of recursive call 74: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:24,951 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:24,951 INFO L550 ElimStorePlain]: Start of recursive call 75: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:24,956 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:24,956 INFO L550 ElimStorePlain]: Start of recursive call 76: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:24,960 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:24,961 INFO L550 ElimStorePlain]: Start of recursive call 77: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:25,193 WARN L205 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 46 [2021-06-05 04:59:25,194 INFO L628 ElimStorePlain]: treesize reduction 273, result has 51.7 percent of original size [2021-06-05 04:59:25,198 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:25,199 INFO L550 ElimStorePlain]: Start of recursive call 78: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:25,202 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:25,203 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:25,204 INFO L550 ElimStorePlain]: Start of recursive call 79: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:25,207 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:25,207 INFO L550 ElimStorePlain]: Start of recursive call 80: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:25,210 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:25,211 INFO L550 ElimStorePlain]: Start of recursive call 81: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:25,215 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:25,215 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:25,216 INFO L550 ElimStorePlain]: Start of recursive call 82: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:25,220 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:25,221 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:25,222 INFO L550 ElimStorePlain]: Start of recursive call 83: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:25,225 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:25,226 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:25,227 INFO L550 ElimStorePlain]: Start of recursive call 84: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:25,229 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:25,230 INFO L550 ElimStorePlain]: Start of recursive call 85: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:25,325 INFO L628 ElimStorePlain]: treesize reduction 47, result has 72.8 percent of original size [2021-06-05 04:59:25,327 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 6 xjuncts. [2021-06-05 04:59:25,327 INFO L247 ElimStorePlain]: Needed 85 recursive calls to eliminate 2 variables, input treesize:3641, output treesize:126 [2021-06-05 04:59:25,480 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:59:25,481 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1117130427] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:59:25,481 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 04:59:25,481 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-06-05 04:59:25,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040024988] [2021-06-05 04:59:25,481 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 04:59:25,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:59:25,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 04:59:25,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-06-05 04:59:25,481 INFO L87 Difference]: Start difference. First operand 539 states and 1708 transitions. Second operand has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:59:25,863 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2021-06-05 04:59:26,281 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2021-06-05 04:59:26,472 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 69 [2021-06-05 04:59:26,818 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2021-06-05 04:59:27,241 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2021-06-05 04:59:27,669 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2021-06-05 04:59:27,822 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 60 [2021-06-05 04:59:28,089 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2021-06-05 04:59:28,224 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 52 [2021-06-05 04:59:28,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:59:28,307 INFO L93 Difference]: Finished difference Result 973 states and 2801 transitions. [2021-06-05 04:59:28,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 04:59:28,307 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 04:59:28,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:59:28,308 INFO L225 Difference]: With dead ends: 973 [2021-06-05 04:59:28,309 INFO L226 Difference]: Without dead ends: 766 [2021-06-05 04:59:28,309 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 500 ImplicationChecksByTransitivity, 2720.2ms TimeCoverageRelationStatistics Valid=383, Invalid=1597, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 04:59:28,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2021-06-05 04:59:28,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 587. [2021-06-05 04:59:28,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 587 states, 586 states have (on average 3.2320819112627985) internal successors, (1894), 586 states have internal predecessors, (1894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:59:28,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 1894 transitions. [2021-06-05 04:59:28,316 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 1894 transitions. Word has length 20 [2021-06-05 04:59:28,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:59:28,316 INFO L482 AbstractCegarLoop]: Abstraction has 587 states and 1894 transitions. [2021-06-05 04:59:28,316 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:59:28,316 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 1894 transitions. [2021-06-05 04:59:28,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 04:59:28,317 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:59:28,317 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:59:28,531 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1124 [2021-06-05 04:59:28,532 INFO L430 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:59:28,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:59:28,532 INFO L82 PathProgramCache]: Analyzing trace with hash -1848321991, now seen corresponding path program 8 times [2021-06-05 04:59:28,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:59:28,532 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780331816] [2021-06-05 04:59:28,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:59:28,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:59:28,611 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:59:28,611 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:59:28,611 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780331816] [2021-06-05 04:59:28,611 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780331816] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:59:28,611 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423191530] [2021-06-05 04:59:28,611 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 04:59:28,646 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 04:59:28,647 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 04:59:28,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 18 conjunts are in the unsatisfiable core [2021-06-05 04:59:28,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 04:59:28,732 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:28,733 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:28,737 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:28,738 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:28,742 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:28,743 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:28,746 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:28,747 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:28,751 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:28,752 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:28,755 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:28,756 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:28,759 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:28,760 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:28,763 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:28,763 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:28,766 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:28,767 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:28,770 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:28,771 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:28,773 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:28,774 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:28,776 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:28,777 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:28,779 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:28,780 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:28,782 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:28,783 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:28,785 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:28,789 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:28,792 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:28,794 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:28,797 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:28,798 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:28,801 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:28,801 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:28,804 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:28,805 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:28,880 INFO L628 ElimStorePlain]: treesize reduction 30, result has 74.8 percent of original size [2021-06-05 04:59:28,881 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-06-05 04:59:28,881 INFO L247 ElimStorePlain]: Needed 20 recursive calls to eliminate 1 variables, input treesize:695, output treesize:89 [2021-06-05 04:59:29,581 INFO L446 ElimStorePlain]: Different costs {0=[char_at_9], 1=[char_at_1]} [2021-06-05 04:59:29,587 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:29,588 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:29,595 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:29,596 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:29,602 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:29,602 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:29,609 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:29,610 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:29,615 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:29,616 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:29,623 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:29,623 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:29,629 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:29,629 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:29,636 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:29,637 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:29,643 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:29,644 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:29,650 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:29,651 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:29,657 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:29,658 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:29,663 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:29,664 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:29,669 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:29,670 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:29,675 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:29,676 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:29,681 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:29,681 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:29,687 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:29,687 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:29,693 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:29,694 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:29,699 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:29,700 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:29,706 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:29,706 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:29,713 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:29,713 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:29,719 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:29,720 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:29,726 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:29,727 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:29,732 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:29,732 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:29,739 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:29,739 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:29,744 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:29,745 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:29,751 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:29,752 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:29,758 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:29,758 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:29,764 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:29,765 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:29,774 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:29,775 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:29,785 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:29,787 INFO L550 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:29,794 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:29,795 INFO L550 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:29,804 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:29,804 INFO L550 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:29,812 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:29,813 INFO L550 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:29,820 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:29,821 INFO L550 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:29,829 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:29,829 INFO L550 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:29,837 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:29,838 INFO L550 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:29,847 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:29,848 INFO L550 ElimStorePlain]: Start of recursive call 38: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:29,855 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:29,856 INFO L550 ElimStorePlain]: Start of recursive call 39: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:29,861 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:29,862 INFO L550 ElimStorePlain]: Start of recursive call 40: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:29,868 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:29,869 INFO L550 ElimStorePlain]: Start of recursive call 41: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:29,874 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:29,874 INFO L550 ElimStorePlain]: Start of recursive call 42: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:29,880 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:29,880 INFO L550 ElimStorePlain]: Start of recursive call 43: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:29,885 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:29,886 INFO L550 ElimStorePlain]: Start of recursive call 44: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:29,891 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:29,892 INFO L550 ElimStorePlain]: Start of recursive call 45: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:29,897 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:29,897 INFO L550 ElimStorePlain]: Start of recursive call 46: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:29,903 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:29,903 INFO L550 ElimStorePlain]: Start of recursive call 47: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:29,909 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:29,909 INFO L550 ElimStorePlain]: Start of recursive call 48: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:29,915 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:29,915 INFO L550 ElimStorePlain]: Start of recursive call 49: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:29,920 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:29,921 INFO L550 ElimStorePlain]: Start of recursive call 50: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:29,926 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 04:59:29,927 INFO L550 ElimStorePlain]: Start of recursive call 51: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:29,933 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:29,933 INFO L550 ElimStorePlain]: Start of recursive call 52: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:29,938 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:29,939 INFO L550 ElimStorePlain]: Start of recursive call 53: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:29,943 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:29,944 INFO L550 ElimStorePlain]: Start of recursive call 54: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:29,949 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:29,949 INFO L550 ElimStorePlain]: Start of recursive call 55: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:29,954 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:29,954 INFO L550 ElimStorePlain]: Start of recursive call 56: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:29,959 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:29,959 INFO L550 ElimStorePlain]: Start of recursive call 57: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:29,964 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:29,964 INFO L550 ElimStorePlain]: Start of recursive call 58: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:29,969 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:29,970 INFO L550 ElimStorePlain]: Start of recursive call 59: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:29,975 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:29,975 INFO L550 ElimStorePlain]: Start of recursive call 60: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:29,980 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:29,981 INFO L550 ElimStorePlain]: Start of recursive call 61: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:29,985 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:29,986 INFO L550 ElimStorePlain]: Start of recursive call 62: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:29,991 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 04:59:29,992 INFO L550 ElimStorePlain]: Start of recursive call 63: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:29,997 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:29,998 INFO L550 ElimStorePlain]: Start of recursive call 64: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:30,002 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:30,003 INFO L550 ElimStorePlain]: Start of recursive call 65: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:30,008 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:30,008 INFO L550 ElimStorePlain]: Start of recursive call 66: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:30,013 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:30,013 INFO L550 ElimStorePlain]: Start of recursive call 67: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:30,018 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:30,019 INFO L550 ElimStorePlain]: Start of recursive call 68: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:30,024 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:30,024 INFO L550 ElimStorePlain]: Start of recursive call 69: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:30,029 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:30,029 INFO L550 ElimStorePlain]: Start of recursive call 70: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:30,034 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:30,035 INFO L550 ElimStorePlain]: Start of recursive call 71: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:30,039 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:30,039 INFO L550 ElimStorePlain]: Start of recursive call 72: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:30,043 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:30,044 INFO L550 ElimStorePlain]: Start of recursive call 73: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:30,048 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:30,049 INFO L550 ElimStorePlain]: Start of recursive call 74: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:30,053 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:30,053 INFO L550 ElimStorePlain]: Start of recursive call 75: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:30,058 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:30,059 INFO L550 ElimStorePlain]: Start of recursive call 76: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:30,063 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:30,063 INFO L550 ElimStorePlain]: Start of recursive call 77: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:30,067 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:30,068 INFO L550 ElimStorePlain]: Start of recursive call 78: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:30,071 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:30,072 INFO L550 ElimStorePlain]: Start of recursive call 79: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:30,076 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:30,077 INFO L550 ElimStorePlain]: Start of recursive call 80: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:30,081 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:30,081 INFO L550 ElimStorePlain]: Start of recursive call 81: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:30,086 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:30,087 INFO L550 ElimStorePlain]: Start of recursive call 82: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:30,091 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:30,092 INFO L550 ElimStorePlain]: Start of recursive call 83: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:30,096 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:30,097 INFO L550 ElimStorePlain]: Start of recursive call 84: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:30,103 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:30,104 INFO L550 ElimStorePlain]: Start of recursive call 85: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:30,110 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:30,111 INFO L550 ElimStorePlain]: Start of recursive call 86: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:30,115 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:30,116 INFO L550 ElimStorePlain]: Start of recursive call 87: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:30,119 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:30,120 INFO L550 ElimStorePlain]: Start of recursive call 88: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:30,124 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:30,124 INFO L550 ElimStorePlain]: Start of recursive call 89: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:30,128 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:30,129 INFO L550 ElimStorePlain]: Start of recursive call 90: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:30,132 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:30,133 INFO L550 ElimStorePlain]: Start of recursive call 91: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:30,136 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:30,137 INFO L550 ElimStorePlain]: Start of recursive call 92: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:30,141 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:30,142 INFO L550 ElimStorePlain]: Start of recursive call 93: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:30,146 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:30,146 INFO L550 ElimStorePlain]: Start of recursive call 94: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:30,150 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:30,150 INFO L550 ElimStorePlain]: Start of recursive call 95: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:30,154 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:30,154 INFO L550 ElimStorePlain]: Start of recursive call 96: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:30,324 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 39 [2021-06-05 04:59:30,325 INFO L628 ElimStorePlain]: treesize reduction 257, result has 42.4 percent of original size [2021-06-05 04:59:30,328 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:30,329 INFO L550 ElimStorePlain]: Start of recursive call 97: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:30,332 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:30,333 INFO L550 ElimStorePlain]: Start of recursive call 98: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:30,336 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:30,337 INFO L550 ElimStorePlain]: Start of recursive call 99: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:30,340 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:30,341 INFO L550 ElimStorePlain]: Start of recursive call 100: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:30,343 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:30,344 INFO L550 ElimStorePlain]: Start of recursive call 101: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:30,347 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:30,347 INFO L550 ElimStorePlain]: Start of recursive call 102: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:30,418 INFO L628 ElimStorePlain]: treesize reduction 19, result has 82.4 percent of original size [2021-06-05 04:59:30,419 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 04:59:30,419 INFO L247 ElimStorePlain]: Needed 102 recursive calls to eliminate 2 variables, input treesize:4714, output treesize:89 [2021-06-05 04:59:30,544 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:59:30,544 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [423191530] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:59:30,544 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 04:59:30,544 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-06-05 04:59:30,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216522260] [2021-06-05 04:59:30,544 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 04:59:30,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:59:30,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 04:59:30,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-06-05 04:59:30,545 INFO L87 Difference]: Start difference. First operand 587 states and 1894 transitions. Second operand has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 14 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:59:31,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:59:31,088 INFO L93 Difference]: Finished difference Result 827 states and 2499 transitions. [2021-06-05 04:59:31,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 04:59:31,089 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 14 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 04:59:31,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:59:31,090 INFO L225 Difference]: With dead ends: 827 [2021-06-05 04:59:31,090 INFO L226 Difference]: Without dead ends: 612 [2021-06-05 04:59:31,090 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 677.7ms TimeCoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2021-06-05 04:59:31,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2021-06-05 04:59:31,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 565. [2021-06-05 04:59:31,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 564 states have (on average 3.1968085106382977) internal successors, (1803), 564 states have internal predecessors, (1803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:59:31,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 1803 transitions. [2021-06-05 04:59:31,096 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 1803 transitions. Word has length 20 [2021-06-05 04:59:31,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:59:31,096 INFO L482 AbstractCegarLoop]: Abstraction has 565 states and 1803 transitions. [2021-06-05 04:59:31,096 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 14 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:59:31,096 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 1803 transitions. [2021-06-05 04:59:31,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 04:59:31,096 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:59:31,097 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:59:31,297 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1312 [2021-06-05 04:59:31,297 INFO L430 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:59:31,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:59:31,297 INFO L82 PathProgramCache]: Analyzing trace with hash -1551384113, now seen corresponding path program 9 times [2021-06-05 04:59:31,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:59:31,297 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830783483] [2021-06-05 04:59:31,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:59:31,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:59:31,472 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:59:31,473 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:59:31,473 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830783483] [2021-06-05 04:59:31,473 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830783483] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:59:31,473 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328619125] [2021-06-05 04:59:31,473 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 04:59:31,506 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-06-05 04:59:31,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 04:59:31,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 18 conjunts are in the unsatisfiable core [2021-06-05 04:59:31,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 04:59:31,564 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:31,571 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:31,574 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:31,575 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:31,578 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:31,579 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:31,582 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:31,583 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:31,585 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:31,586 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:31,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 04:59:31,589 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:31,592 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:31,593 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:31,595 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:31,596 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:31,598 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:31,599 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:31,601 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:31,602 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:31,604 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:31,605 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:31,607 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:31,607 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:31,610 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:31,611 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:31,613 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:31,613 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:31,617 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:31,618 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:31,620 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:31,620 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:31,623 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:31,623 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:31,625 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:31,626 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:31,627 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:31,628 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:31,677 INFO L628 ElimStorePlain]: treesize reduction 46, result has 60.0 percent of original size [2021-06-05 04:59:31,678 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-06-05 04:59:31,678 INFO L247 ElimStorePlain]: Needed 20 recursive calls to eliminate 1 variables, input treesize:586, output treesize:69 [2021-06-05 04:59:31,917 INFO L446 ElimStorePlain]: Different costs {0=[char_at_1], 1=[char_at_5]} [2021-06-05 04:59:31,930 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:31,931 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:31,938 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:31,939 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:31,946 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:31,947 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:31,954 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:31,955 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:31,962 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:31,963 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:31,970 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:31,970 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:31,976 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:31,977 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:31,982 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:31,983 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:31,989 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 04:59:31,990 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:31,995 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:31,996 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:32,001 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:32,003 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:32,009 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:32,010 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:32,016 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:32,016 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:32,022 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:32,022 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:32,028 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:32,029 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:32,033 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:32,034 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:32,039 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:32,039 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:32,045 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:32,046 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:32,052 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:32,052 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:32,058 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:32,059 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:32,064 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:32,065 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:32,070 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:32,071 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:32,076 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:32,077 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:32,082 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:32,083 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:32,088 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:32,088 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:32,095 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:32,096 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:32,100 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:32,101 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:32,107 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:32,108 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:32,112 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:32,113 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:32,118 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:32,118 INFO L550 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:32,123 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:32,123 INFO L550 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:32,128 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:32,129 INFO L550 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:32,134 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:32,135 INFO L550 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:32,140 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:32,140 INFO L550 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:32,145 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:32,145 INFO L550 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:32,151 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:32,152 INFO L550 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:32,157 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:32,157 INFO L550 ElimStorePlain]: Start of recursive call 38: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:32,162 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:32,163 INFO L550 ElimStorePlain]: Start of recursive call 39: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:32,168 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:32,168 INFO L550 ElimStorePlain]: Start of recursive call 40: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:32,173 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:32,174 INFO L550 ElimStorePlain]: Start of recursive call 41: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:32,178 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:32,179 INFO L550 ElimStorePlain]: Start of recursive call 42: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:32,183 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:32,184 INFO L550 ElimStorePlain]: Start of recursive call 43: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:32,189 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:32,189 INFO L550 ElimStorePlain]: Start of recursive call 44: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:32,194 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:32,195 INFO L550 ElimStorePlain]: Start of recursive call 45: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:32,199 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:32,200 INFO L550 ElimStorePlain]: Start of recursive call 46: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:32,205 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:32,205 INFO L550 ElimStorePlain]: Start of recursive call 47: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:32,210 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:32,210 INFO L550 ElimStorePlain]: Start of recursive call 48: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:32,215 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:32,215 INFO L550 ElimStorePlain]: Start of recursive call 49: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:32,220 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:32,221 INFO L550 ElimStorePlain]: Start of recursive call 50: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:32,224 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:32,225 INFO L550 ElimStorePlain]: Start of recursive call 51: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:32,230 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:32,230 INFO L550 ElimStorePlain]: Start of recursive call 52: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:32,234 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:32,235 INFO L550 ElimStorePlain]: Start of recursive call 53: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:32,239 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:32,240 INFO L550 ElimStorePlain]: Start of recursive call 54: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:32,244 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:32,244 INFO L550 ElimStorePlain]: Start of recursive call 55: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:32,249 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:32,249 INFO L550 ElimStorePlain]: Start of recursive call 56: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:32,254 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:32,254 INFO L550 ElimStorePlain]: Start of recursive call 57: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:32,259 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:32,260 INFO L550 ElimStorePlain]: Start of recursive call 58: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:32,263 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:32,264 INFO L550 ElimStorePlain]: Start of recursive call 59: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:32,268 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:32,269 INFO L550 ElimStorePlain]: Start of recursive call 60: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:32,272 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:32,273 INFO L550 ElimStorePlain]: Start of recursive call 61: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:32,277 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:32,278 INFO L550 ElimStorePlain]: Start of recursive call 62: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:32,282 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:32,283 INFO L550 ElimStorePlain]: Start of recursive call 63: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:32,287 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:32,287 INFO L550 ElimStorePlain]: Start of recursive call 64: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:32,291 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:32,292 INFO L550 ElimStorePlain]: Start of recursive call 65: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:32,295 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:32,296 INFO L550 ElimStorePlain]: Start of recursive call 66: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:32,300 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:32,300 INFO L550 ElimStorePlain]: Start of recursive call 67: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:32,304 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:32,304 INFO L550 ElimStorePlain]: Start of recursive call 68: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:32,308 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:32,308 INFO L550 ElimStorePlain]: Start of recursive call 69: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:32,312 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:32,313 INFO L550 ElimStorePlain]: Start of recursive call 70: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:32,316 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:32,317 INFO L550 ElimStorePlain]: Start of recursive call 71: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:32,559 WARN L205 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 46 [2021-06-05 04:59:32,559 INFO L628 ElimStorePlain]: treesize reduction 273, result has 51.7 percent of original size [2021-06-05 04:59:32,562 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:32,563 INFO L550 ElimStorePlain]: Start of recursive call 72: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:32,566 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:32,567 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:32,568 INFO L550 ElimStorePlain]: Start of recursive call 73: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:32,570 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:32,571 INFO L550 ElimStorePlain]: Start of recursive call 74: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:32,573 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:32,574 INFO L550 ElimStorePlain]: Start of recursive call 75: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:32,577 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:32,577 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:32,578 INFO L550 ElimStorePlain]: Start of recursive call 76: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:32,581 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:32,581 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:32,582 INFO L550 ElimStorePlain]: Start of recursive call 77: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:32,585 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:32,585 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:32,586 INFO L550 ElimStorePlain]: Start of recursive call 78: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:32,588 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:32,589 INFO L550 ElimStorePlain]: Start of recursive call 79: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:32,683 INFO L628 ElimStorePlain]: treesize reduction 47, result has 72.8 percent of original size [2021-06-05 04:59:32,685 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 6 xjuncts. [2021-06-05 04:59:32,685 INFO L247 ElimStorePlain]: Needed 79 recursive calls to eliminate 2 variables, input treesize:3371, output treesize:126 [2021-06-05 04:59:32,823 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 04:59:32,823 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328619125] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:59:32,823 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 04:59:32,823 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 17 [2021-06-05 04:59:32,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551897253] [2021-06-05 04:59:32,823 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 04:59:32,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:59:32,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 04:59:32,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2021-06-05 04:59:32,824 INFO L87 Difference]: Start difference. First operand 565 states and 1803 transitions. Second operand has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 17 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:59:33,322 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 53 [2021-06-05 04:59:33,631 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 40 [2021-06-05 04:59:33,774 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 47 [2021-06-05 04:59:34,350 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 57 [2021-06-05 04:59:34,770 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 51 [2021-06-05 04:59:35,126 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2021-06-05 04:59:35,546 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 51 [2021-06-05 04:59:35,869 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 57 [2021-06-05 04:59:36,028 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 64 [2021-06-05 04:59:36,171 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 53 [2021-06-05 04:59:36,304 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 49 [2021-06-05 04:59:36,466 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 66 [2021-06-05 04:59:36,610 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 57 [2021-06-05 04:59:36,790 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 59 [2021-06-05 04:59:36,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:59:36,806 INFO L93 Difference]: Finished difference Result 1067 states and 3286 transitions. [2021-06-05 04:59:36,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 04:59:36,806 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 17 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 04:59:36,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:59:36,807 INFO L225 Difference]: With dead ends: 1067 [2021-06-05 04:59:36,807 INFO L226 Difference]: Without dead ends: 855 [2021-06-05 04:59:36,808 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 883 ImplicationChecksByTransitivity, 3853.8ms TimeCoverageRelationStatistics Valid=620, Invalid=2802, Unknown=0, NotChecked=0, Total=3422 [2021-06-05 04:59:36,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2021-06-05 04:59:36,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 568. [2021-06-05 04:59:36,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 567 states have (on average 3.1693121693121693) internal successors, (1797), 567 states have internal predecessors, (1797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:59:36,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 1797 transitions. [2021-06-05 04:59:36,816 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 1797 transitions. Word has length 20 [2021-06-05 04:59:36,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:59:36,816 INFO L482 AbstractCegarLoop]: Abstraction has 568 states and 1797 transitions. [2021-06-05 04:59:36,816 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 17 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:59:36,816 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 1797 transitions. [2021-06-05 04:59:36,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 04:59:36,817 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:59:36,817 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:59:37,040 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1456 [2021-06-05 04:59:37,040 INFO L430 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:59:37,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:59:37,040 INFO L82 PathProgramCache]: Analyzing trace with hash -1169299993, now seen corresponding path program 10 times [2021-06-05 04:59:37,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:59:37,041 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689383943] [2021-06-05 04:59:37,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:59:37,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:59:37,149 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 04:59:37,150 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:59:37,150 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689383943] [2021-06-05 04:59:37,150 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689383943] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:59:37,150 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [768223082] [2021-06-05 04:59:37,150 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 04:59:37,196 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 04:59:37,196 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 04:59:37,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 18 conjunts are in the unsatisfiable core [2021-06-05 04:59:37,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 04:59:37,326 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:37,327 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:37,332 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:37,333 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:37,337 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:37,338 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:37,342 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:37,342 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:37,346 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:37,348 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:37,351 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:37,352 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:37,356 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:37,358 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:37,361 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:37,362 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:37,365 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:37,366 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:37,370 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:37,371 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:37,375 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:37,377 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:37,380 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:37,381 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:37,384 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:37,385 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:37,388 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:37,389 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:37,392 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:37,393 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:37,396 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:37,397 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:37,400 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:37,400 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:37,403 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:37,404 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:37,407 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:37,408 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:37,515 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 32 [2021-06-05 04:59:37,515 INFO L628 ElimStorePlain]: treesize reduction 60, result has 64.5 percent of original size [2021-06-05 04:59:37,516 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 04:59:37,517 INFO L247 ElimStorePlain]: Needed 20 recursive calls to eliminate 1 variables, input treesize:691, output treesize:109 [2021-06-05 04:59:37,942 INFO L446 ElimStorePlain]: Different costs {0=[char_at_9], 1=[char_at_5]} [2021-06-05 04:59:37,949 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:37,950 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:37,956 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 04:59:37,957 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:37,962 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:37,963 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:37,969 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 04:59:37,970 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:37,974 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:37,975 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:37,979 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:37,980 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:37,984 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:37,985 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:37,990 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 04:59:37,991 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:37,995 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:37,996 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:38,000 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:38,001 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:38,005 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:38,006 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:38,011 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:38,011 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:38,015 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:38,015 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:38,020 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:38,021 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:38,025 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:38,025 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:38,029 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:38,029 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:38,033 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:38,033 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:38,037 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:38,038 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:38,042 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:38,043 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:38,046 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:38,047 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:38,052 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:38,053 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:38,058 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:38,059 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:38,063 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 04:59:38,064 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:38,068 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:38,068 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:38,072 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:38,073 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:38,077 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:38,078 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:38,082 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:38,083 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:38,087 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:38,087 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:38,093 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:38,094 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:38,098 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:38,098 INFO L550 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:38,102 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:38,102 INFO L550 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:38,106 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 04:59:38,107 INFO L550 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:38,111 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:38,111 INFO L550 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:38,115 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:38,116 INFO L550 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:38,119 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:38,119 INFO L550 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:38,123 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:38,123 INFO L550 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:38,126 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:38,127 INFO L550 ElimStorePlain]: Start of recursive call 38: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:38,130 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:38,131 INFO L550 ElimStorePlain]: Start of recursive call 39: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:38,134 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:38,135 INFO L550 ElimStorePlain]: Start of recursive call 40: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:38,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 04:59:38,143 INFO L550 ElimStorePlain]: Start of recursive call 41: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:38,146 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:38,147 INFO L550 ElimStorePlain]: Start of recursive call 42: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:38,151 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:38,151 INFO L550 ElimStorePlain]: Start of recursive call 43: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:38,157 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:38,157 INFO L550 ElimStorePlain]: Start of recursive call 44: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:38,161 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:38,161 INFO L550 ElimStorePlain]: Start of recursive call 45: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:38,165 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:38,166 INFO L550 ElimStorePlain]: Start of recursive call 46: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:38,169 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:38,170 INFO L550 ElimStorePlain]: Start of recursive call 47: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:38,172 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:38,173 INFO L550 ElimStorePlain]: Start of recursive call 48: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:38,177 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:38,178 INFO L550 ElimStorePlain]: Start of recursive call 49: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:38,183 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:38,184 INFO L550 ElimStorePlain]: Start of recursive call 50: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:38,187 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:38,188 INFO L550 ElimStorePlain]: Start of recursive call 51: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:38,192 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:38,193 INFO L550 ElimStorePlain]: Start of recursive call 52: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:38,196 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:38,196 INFO L550 ElimStorePlain]: Start of recursive call 53: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:38,300 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 31 [2021-06-05 04:59:38,301 INFO L628 ElimStorePlain]: treesize reduction 163, result has 40.7 percent of original size [2021-06-05 04:59:38,303 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:38,304 INFO L550 ElimStorePlain]: Start of recursive call 54: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:38,306 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:38,306 INFO L550 ElimStorePlain]: Start of recursive call 55: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:38,308 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:38,309 INFO L550 ElimStorePlain]: Start of recursive call 56: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:38,311 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:38,312 INFO L550 ElimStorePlain]: Start of recursive call 57: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:38,335 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 04:59:38,335 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-06-05 04:59:38,336 INFO L247 ElimStorePlain]: Needed 57 recursive calls to eliminate 2 variables, input treesize:2108, output treesize:61 [2021-06-05 04:59:38,422 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 04:59:38,422 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [768223082] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:59:38,422 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 04:59:38,422 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-06-05 04:59:38,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833839138] [2021-06-05 04:59:38,422 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 04:59:38,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:59:38,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 04:59:38,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-06-05 04:59:38,423 INFO L87 Difference]: Start difference. First operand 568 states and 1797 transitions. Second operand has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:59:39,072 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 42 [2021-06-05 04:59:39,579 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2021-06-05 04:59:39,712 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 50 [2021-06-05 04:59:39,850 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2021-06-05 04:59:40,332 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2021-06-05 04:59:40,482 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2021-06-05 04:59:41,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:59:41,850 INFO L93 Difference]: Finished difference Result 1167 states and 3497 transitions. [2021-06-05 04:59:41,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-06-05 04:59:41,851 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 04:59:41,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:59:41,852 INFO L225 Difference]: With dead ends: 1167 [2021-06-05 04:59:41,852 INFO L226 Difference]: Without dead ends: 833 [2021-06-05 04:59:41,852 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1231 ImplicationChecksByTransitivity, 3223.4ms TimeCoverageRelationStatistics Valid=593, Invalid=3439, Unknown=0, NotChecked=0, Total=4032 [2021-06-05 04:59:41,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2021-06-05 04:59:41,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 615. [2021-06-05 04:59:41,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 615 states, 614 states have (on average 3.1530944625407167) internal successors, (1936), 614 states have internal predecessors, (1936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:59:41,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 1936 transitions. [2021-06-05 04:59:41,859 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 1936 transitions. Word has length 20 [2021-06-05 04:59:41,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:59:41,859 INFO L482 AbstractCegarLoop]: Abstraction has 615 states and 1936 transitions. [2021-06-05 04:59:41,859 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:59:41,859 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 1936 transitions. [2021-06-05 04:59:41,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 04:59:41,860 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:59:41,860 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:59:42,061 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1512 [2021-06-05 04:59:42,061 INFO L430 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:59:42,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:59:42,061 INFO L82 PathProgramCache]: Analyzing trace with hash 1379623715, now seen corresponding path program 11 times [2021-06-05 04:59:42,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:59:42,061 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380596992] [2021-06-05 04:59:42,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:59:42,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:59:42,143 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:59:42,143 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:59:42,143 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380596992] [2021-06-05 04:59:42,143 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380596992] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:59:42,143 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2045328625] [2021-06-05 04:59:42,143 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 04:59:42,177 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 04:59:42,177 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 04:59:42,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 18 conjunts are in the unsatisfiable core [2021-06-05 04:59:42,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 04:59:42,287 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:42,288 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:42,292 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:42,293 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:42,296 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:42,296 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:42,300 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:42,301 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:42,305 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:42,306 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:42,309 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:42,310 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:42,314 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 04:59:42,314 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:42,318 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:42,318 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:42,321 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:42,322 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:42,325 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:42,325 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:42,328 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:42,328 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:42,331 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:42,332 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:42,334 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:42,335 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:42,337 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:42,347 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:42,350 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:42,351 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:42,353 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:42,354 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:42,356 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:42,356 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:42,358 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:42,359 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:42,361 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:42,361 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:42,434 INFO L628 ElimStorePlain]: treesize reduction 34, result has 74.4 percent of original size [2021-06-05 04:59:42,435 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 04:59:42,435 INFO L247 ElimStorePlain]: Needed 20 recursive calls to eliminate 1 variables, input treesize:651, output treesize:99 [2021-06-05 04:59:42,796 INFO L446 ElimStorePlain]: Different costs {0=[char_at_9], 1=[char_at_5]} [2021-06-05 04:59:42,802 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:42,803 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:42,810 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:42,811 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:42,819 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 04:59:42,819 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:42,826 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:42,827 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:42,833 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:42,834 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:42,840 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:42,841 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:42,848 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:42,849 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:42,856 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:42,857 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:42,864 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:42,864 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:42,872 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:42,872 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:42,879 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:42,880 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:42,886 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:42,887 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:42,895 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:42,896 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:42,903 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:42,903 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:42,911 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:42,911 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:42,919 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:42,920 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:42,926 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:42,927 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:42,933 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:42,934 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:42,942 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:42,943 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:42,950 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:42,950 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:42,957 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:42,957 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:42,964 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:42,965 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:42,972 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 04:59:42,972 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:42,978 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:42,979 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:42,984 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:42,985 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:42,991 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:42,992 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:43,000 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:43,000 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:43,009 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:43,010 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:43,017 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:43,017 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:43,024 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 04:59:43,025 INFO L550 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:43,030 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:43,031 INFO L550 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:43,037 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:43,038 INFO L550 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:43,044 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:43,044 INFO L550 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:43,051 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:43,052 INFO L550 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:43,058 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:43,059 INFO L550 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:43,066 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:43,067 INFO L550 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:43,072 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:43,073 INFO L550 ElimStorePlain]: Start of recursive call 38: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:43,080 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:43,080 INFO L550 ElimStorePlain]: Start of recursive call 39: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:43,087 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:43,087 INFO L550 ElimStorePlain]: Start of recursive call 40: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:43,094 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:43,094 INFO L550 ElimStorePlain]: Start of recursive call 41: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:43,101 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:43,101 INFO L550 ElimStorePlain]: Start of recursive call 42: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:43,107 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:43,107 INFO L550 ElimStorePlain]: Start of recursive call 43: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:43,113 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:43,114 INFO L550 ElimStorePlain]: Start of recursive call 44: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:43,120 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:43,120 INFO L550 ElimStorePlain]: Start of recursive call 45: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:43,126 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:43,126 INFO L550 ElimStorePlain]: Start of recursive call 46: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:43,132 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:43,133 INFO L550 ElimStorePlain]: Start of recursive call 47: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:43,139 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:43,139 INFO L550 ElimStorePlain]: Start of recursive call 48: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:43,146 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:43,146 INFO L550 ElimStorePlain]: Start of recursive call 49: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:43,152 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:43,153 INFO L550 ElimStorePlain]: Start of recursive call 50: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:43,158 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:43,159 INFO L550 ElimStorePlain]: Start of recursive call 51: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:43,165 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:43,166 INFO L550 ElimStorePlain]: Start of recursive call 52: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:43,172 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:43,173 INFO L550 ElimStorePlain]: Start of recursive call 53: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:43,179 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:43,179 INFO L550 ElimStorePlain]: Start of recursive call 54: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:43,185 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:43,185 INFO L550 ElimStorePlain]: Start of recursive call 55: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:43,191 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:43,192 INFO L550 ElimStorePlain]: Start of recursive call 56: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:43,198 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:43,198 INFO L550 ElimStorePlain]: Start of recursive call 57: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:43,204 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:43,204 INFO L550 ElimStorePlain]: Start of recursive call 58: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:43,210 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:43,211 INFO L550 ElimStorePlain]: Start of recursive call 59: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:43,216 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:43,217 INFO L550 ElimStorePlain]: Start of recursive call 60: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:43,223 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:43,223 INFO L550 ElimStorePlain]: Start of recursive call 61: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:43,229 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:43,229 INFO L550 ElimStorePlain]: Start of recursive call 62: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:43,252 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:43,253 INFO L550 ElimStorePlain]: Start of recursive call 63: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:43,259 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:43,259 INFO L550 ElimStorePlain]: Start of recursive call 64: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:43,265 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:43,266 INFO L550 ElimStorePlain]: Start of recursive call 65: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:43,271 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:43,271 INFO L550 ElimStorePlain]: Start of recursive call 66: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:43,277 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:43,277 INFO L550 ElimStorePlain]: Start of recursive call 67: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:43,282 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:43,283 INFO L550 ElimStorePlain]: Start of recursive call 68: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:43,288 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:43,288 INFO L550 ElimStorePlain]: Start of recursive call 69: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:43,294 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:43,294 INFO L550 ElimStorePlain]: Start of recursive call 70: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:43,299 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:43,299 INFO L550 ElimStorePlain]: Start of recursive call 71: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:43,304 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:43,304 INFO L550 ElimStorePlain]: Start of recursive call 72: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:43,312 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:43,313 INFO L550 ElimStorePlain]: Start of recursive call 73: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:43,318 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:43,319 INFO L550 ElimStorePlain]: Start of recursive call 74: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:43,324 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:43,324 INFO L550 ElimStorePlain]: Start of recursive call 75: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:43,330 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:43,330 INFO L550 ElimStorePlain]: Start of recursive call 76: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:43,335 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:43,336 INFO L550 ElimStorePlain]: Start of recursive call 77: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:43,341 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:43,342 INFO L550 ElimStorePlain]: Start of recursive call 78: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:43,347 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:43,348 INFO L550 ElimStorePlain]: Start of recursive call 79: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:43,353 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:43,354 INFO L550 ElimStorePlain]: Start of recursive call 80: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:43,358 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:43,359 INFO L550 ElimStorePlain]: Start of recursive call 81: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:43,368 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:43,369 INFO L550 ElimStorePlain]: Start of recursive call 82: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:43,374 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:43,375 INFO L550 ElimStorePlain]: Start of recursive call 83: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:43,380 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:43,380 INFO L550 ElimStorePlain]: Start of recursive call 84: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:43,385 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:43,385 INFO L550 ElimStorePlain]: Start of recursive call 85: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:43,390 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:43,391 INFO L550 ElimStorePlain]: Start of recursive call 86: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:43,395 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:43,396 INFO L550 ElimStorePlain]: Start of recursive call 87: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:43,400 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:43,401 INFO L550 ElimStorePlain]: Start of recursive call 88: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:43,405 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:43,406 INFO L550 ElimStorePlain]: Start of recursive call 89: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:43,411 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:43,412 INFO L550 ElimStorePlain]: Start of recursive call 90: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:43,416 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:43,417 INFO L550 ElimStorePlain]: Start of recursive call 91: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:43,421 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:43,422 INFO L550 ElimStorePlain]: Start of recursive call 92: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:43,427 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:43,427 INFO L550 ElimStorePlain]: Start of recursive call 93: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:43,431 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:43,432 INFO L550 ElimStorePlain]: Start of recursive call 94: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:43,436 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:43,437 INFO L550 ElimStorePlain]: Start of recursive call 95: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:43,441 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:43,442 INFO L550 ElimStorePlain]: Start of recursive call 96: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:43,446 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:43,446 INFO L550 ElimStorePlain]: Start of recursive call 97: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:43,695 WARN L205 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2021-06-05 04:59:43,695 INFO L628 ElimStorePlain]: treesize reduction 244, result has 54.5 percent of original size [2021-06-05 04:59:43,698 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:43,699 INFO L550 ElimStorePlain]: Start of recursive call 98: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:43,702 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:43,702 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:43,703 INFO L550 ElimStorePlain]: Start of recursive call 99: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:43,706 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:43,707 INFO L550 ElimStorePlain]: Start of recursive call 100: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:43,709 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:43,710 INFO L550 ElimStorePlain]: Start of recursive call 101: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:43,713 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:43,713 INFO L550 ElimStorePlain]: Start of recursive call 102: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:43,716 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:43,717 INFO L550 ElimStorePlain]: Start of recursive call 103: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:43,719 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:43,720 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:43,721 INFO L550 ElimStorePlain]: Start of recursive call 104: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:43,723 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:43,724 INFO L550 ElimStorePlain]: Start of recursive call 105: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:43,818 INFO L628 ElimStorePlain]: treesize reduction 47, result has 72.8 percent of original size [2021-06-05 04:59:43,819 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 6 xjuncts. [2021-06-05 04:59:43,819 INFO L247 ElimStorePlain]: Needed 105 recursive calls to eliminate 2 variables, input treesize:4815, output treesize:126 [2021-06-05 04:59:43,950 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:59:43,950 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2045328625] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:59:43,950 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 04:59:43,950 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-06-05 04:59:43,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386080825] [2021-06-05 04:59:43,950 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 04:59:43,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:59:43,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 04:59:43,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-06-05 04:59:43,951 INFO L87 Difference]: Start difference. First operand 615 states and 1936 transitions. Second operand has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:59:44,335 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2021-06-05 04:59:44,725 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 52 [2021-06-05 04:59:45,121 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2021-06-05 04:59:45,566 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2021-06-05 04:59:45,740 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 58 [2021-06-05 04:59:45,870 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 46 [2021-06-05 04:59:46,053 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 62 [2021-06-05 04:59:46,186 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 49 [2021-06-05 04:59:46,433 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2021-06-05 04:59:46,625 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2021-06-05 04:59:46,795 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2021-06-05 04:59:46,955 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2021-06-05 04:59:47,093 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 50 [2021-06-05 04:59:47,276 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 48 [2021-06-05 04:59:47,536 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 57 [2021-06-05 04:59:47,716 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2021-06-05 04:59:47,898 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2021-06-05 04:59:48,059 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 61 [2021-06-05 04:59:48,231 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2021-06-05 04:59:48,440 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 64 [2021-06-05 04:59:48,632 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2021-06-05 04:59:48,820 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 63 [2021-06-05 04:59:48,995 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 61 [2021-06-05 04:59:49,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:59:49,294 INFO L93 Difference]: Finished difference Result 1743 states and 4973 transitions. [2021-06-05 04:59:49,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-06-05 04:59:49,294 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 04:59:49,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:59:49,296 INFO L225 Difference]: With dead ends: 1743 [2021-06-05 04:59:49,296 INFO L226 Difference]: Without dead ends: 1384 [2021-06-05 04:59:49,296 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1018 ImplicationChecksByTransitivity, 5077.0ms TimeCoverageRelationStatistics Valid=953, Invalid=3079, Unknown=0, NotChecked=0, Total=4032 [2021-06-05 04:59:49,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1384 states. [2021-06-05 04:59:49,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1384 to 670. [2021-06-05 04:59:49,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 669 states have (on average 3.1913303437967113) internal successors, (2135), 669 states have internal predecessors, (2135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:59:49,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 2135 transitions. [2021-06-05 04:59:49,306 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 2135 transitions. Word has length 20 [2021-06-05 04:59:49,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:59:49,306 INFO L482 AbstractCegarLoop]: Abstraction has 670 states and 2135 transitions. [2021-06-05 04:59:49,306 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:59:49,306 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 2135 transitions. [2021-06-05 04:59:49,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 04:59:49,307 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:59:49,307 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:59:49,507 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1608,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 04:59:49,507 INFO L430 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:59:49,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:59:49,508 INFO L82 PathProgramCache]: Analyzing trace with hash 969949795, now seen corresponding path program 12 times [2021-06-05 04:59:49,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:59:49,508 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274084727] [2021-06-05 04:59:49,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:59:49,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:59:49,594 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 04:59:49,594 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:59:49,594 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274084727] [2021-06-05 04:59:49,594 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274084727] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:59:49,594 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [869863284] [2021-06-05 04:59:49,594 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 04:59:49,645 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 04:59:49,645 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 04:59:49,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 18 conjunts are in the unsatisfiable core [2021-06-05 04:59:49,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 04:59:49,696 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:49,697 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:49,700 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:49,700 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:49,703 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:49,703 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:49,706 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:49,707 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:49,709 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:49,710 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:49,712 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:49,713 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:49,715 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:49,716 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:49,719 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:49,720 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:49,722 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:49,723 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:49,725 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:49,726 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:49,728 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:49,728 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:49,731 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:49,732 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:49,734 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:49,735 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:49,737 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:49,738 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:49,740 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:49,740 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:49,742 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:49,743 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:49,745 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:49,746 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:49,749 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:49,749 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:49,751 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:49,752 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:49,754 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:49,754 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:49,815 INFO L628 ElimStorePlain]: treesize reduction 31, result has 73.5 percent of original size [2021-06-05 04:59:49,816 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 04:59:49,816 INFO L247 ElimStorePlain]: Needed 21 recursive calls to eliminate 1 variables, input treesize:605, output treesize:86 [2021-06-05 04:59:50,364 INFO L446 ElimStorePlain]: Different costs {0=[char_at_5], 1=[char_at_1]} [2021-06-05 04:59:50,371 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:50,372 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:50,379 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:50,380 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:50,389 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:50,390 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:50,395 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:50,396 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:50,402 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:50,403 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:50,408 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:50,408 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:50,414 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:50,415 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:50,420 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:50,421 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:50,426 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:50,426 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:50,432 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:50,433 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:50,439 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:50,440 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:50,446 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:50,446 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:50,452 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:50,452 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:50,458 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:50,459 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:50,465 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:50,465 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:50,471 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:50,472 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:50,478 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:50,478 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:50,483 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:50,484 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:50,490 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:50,490 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:50,497 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:50,498 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:50,503 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:50,504 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:50,509 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:50,509 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:50,515 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:50,516 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:50,522 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:50,522 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:50,527 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:50,528 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:50,533 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 04:59:50,534 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:50,539 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:50,540 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:50,546 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:50,546 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:50,551 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:50,551 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:50,556 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:50,557 INFO L550 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:50,563 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:50,564 INFO L550 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:50,569 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:50,570 INFO L550 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:50,575 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 04:59:50,576 INFO L550 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:50,581 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:50,582 INFO L550 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:50,587 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:50,588 INFO L550 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:50,592 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:50,593 INFO L550 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:50,598 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:50,599 INFO L550 ElimStorePlain]: Start of recursive call 38: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:50,604 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:50,605 INFO L550 ElimStorePlain]: Start of recursive call 39: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:50,610 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:50,611 INFO L550 ElimStorePlain]: Start of recursive call 40: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:50,616 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:50,617 INFO L550 ElimStorePlain]: Start of recursive call 41: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:50,622 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:50,623 INFO L550 ElimStorePlain]: Start of recursive call 42: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:50,627 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:50,628 INFO L550 ElimStorePlain]: Start of recursive call 43: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:50,633 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:50,634 INFO L550 ElimStorePlain]: Start of recursive call 44: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:50,639 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:50,639 INFO L550 ElimStorePlain]: Start of recursive call 45: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:50,644 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:50,645 INFO L550 ElimStorePlain]: Start of recursive call 46: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:50,650 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:50,651 INFO L550 ElimStorePlain]: Start of recursive call 47: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:50,656 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:50,656 INFO L550 ElimStorePlain]: Start of recursive call 48: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:50,661 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:50,662 INFO L550 ElimStorePlain]: Start of recursive call 49: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:50,667 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:50,667 INFO L550 ElimStorePlain]: Start of recursive call 50: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:50,672 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:50,673 INFO L550 ElimStorePlain]: Start of recursive call 51: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:50,677 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:50,678 INFO L550 ElimStorePlain]: Start of recursive call 52: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:50,682 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:50,683 INFO L550 ElimStorePlain]: Start of recursive call 53: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:50,687 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:50,688 INFO L550 ElimStorePlain]: Start of recursive call 54: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:50,693 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:50,693 INFO L550 ElimStorePlain]: Start of recursive call 55: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:50,698 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:50,699 INFO L550 ElimStorePlain]: Start of recursive call 56: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:50,703 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:50,703 INFO L550 ElimStorePlain]: Start of recursive call 57: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:50,708 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:50,708 INFO L550 ElimStorePlain]: Start of recursive call 58: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:50,712 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:50,713 INFO L550 ElimStorePlain]: Start of recursive call 59: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:50,717 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:50,718 INFO L550 ElimStorePlain]: Start of recursive call 60: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:50,722 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:50,722 INFO L550 ElimStorePlain]: Start of recursive call 61: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:50,727 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:50,727 INFO L550 ElimStorePlain]: Start of recursive call 62: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:50,732 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:50,733 INFO L550 ElimStorePlain]: Start of recursive call 63: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:50,737 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:50,738 INFO L550 ElimStorePlain]: Start of recursive call 64: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:50,742 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:50,742 INFO L550 ElimStorePlain]: Start of recursive call 65: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:50,747 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:50,747 INFO L550 ElimStorePlain]: Start of recursive call 66: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:50,751 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:50,752 INFO L550 ElimStorePlain]: Start of recursive call 67: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:50,756 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:50,757 INFO L550 ElimStorePlain]: Start of recursive call 68: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:50,760 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:50,761 INFO L550 ElimStorePlain]: Start of recursive call 69: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:50,765 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:50,765 INFO L550 ElimStorePlain]: Start of recursive call 70: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:50,770 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:50,771 INFO L550 ElimStorePlain]: Start of recursive call 71: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:50,775 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:50,775 INFO L550 ElimStorePlain]: Start of recursive call 72: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:50,793 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:50,794 INFO L550 ElimStorePlain]: Start of recursive call 73: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:50,797 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:50,798 INFO L550 ElimStorePlain]: Start of recursive call 74: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:50,801 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:50,802 INFO L550 ElimStorePlain]: Start of recursive call 75: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:50,805 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:50,806 INFO L550 ElimStorePlain]: Start of recursive call 76: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:50,809 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:50,809 INFO L550 ElimStorePlain]: Start of recursive call 77: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:50,812 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:50,813 INFO L550 ElimStorePlain]: Start of recursive call 78: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:50,816 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:50,816 INFO L550 ElimStorePlain]: Start of recursive call 79: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:50,820 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:50,820 INFO L550 ElimStorePlain]: Start of recursive call 80: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:50,824 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:50,824 INFO L550 ElimStorePlain]: Start of recursive call 81: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:50,827 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:50,828 INFO L550 ElimStorePlain]: Start of recursive call 82: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:50,832 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:50,832 INFO L550 ElimStorePlain]: Start of recursive call 83: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:50,835 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:50,836 INFO L550 ElimStorePlain]: Start of recursive call 84: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:50,839 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:50,839 INFO L550 ElimStorePlain]: Start of recursive call 85: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:50,842 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:50,842 INFO L550 ElimStorePlain]: Start of recursive call 86: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:51,009 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 44 [2021-06-05 04:59:51,010 INFO L628 ElimStorePlain]: treesize reduction 287, result has 39.7 percent of original size [2021-06-05 04:59:51,013 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:51,014 INFO L550 ElimStorePlain]: Start of recursive call 87: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:51,016 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:51,017 INFO L550 ElimStorePlain]: Start of recursive call 88: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:51,020 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:51,021 INFO L550 ElimStorePlain]: Start of recursive call 89: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:51,023 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:51,024 INFO L550 ElimStorePlain]: Start of recursive call 90: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:51,026 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:51,027 INFO L550 ElimStorePlain]: Start of recursive call 91: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:51,029 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:51,030 INFO L550 ElimStorePlain]: Start of recursive call 92: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:51,100 INFO L628 ElimStorePlain]: treesize reduction 19, result has 82.4 percent of original size [2021-06-05 04:59:51,101 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 04:59:51,101 INFO L247 ElimStorePlain]: Needed 92 recursive calls to eliminate 2 variables, input treesize:4081, output treesize:89 [2021-06-05 04:59:51,217 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 04:59:51,217 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [869863284] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:59:51,217 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 04:59:51,217 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 04:59:51,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232009440] [2021-06-05 04:59:51,218 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 04:59:51,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:59:51,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 04:59:51,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-06-05 04:59:51,218 INFO L87 Difference]: Start difference. First operand 670 states and 2135 transitions. Second operand has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:59:51,790 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2021-06-05 04:59:51,989 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 47 [2021-06-05 04:59:52,164 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2021-06-05 04:59:52,324 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 42 [2021-06-05 04:59:52,449 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 45 [2021-06-05 04:59:52,705 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 40 [2021-06-05 04:59:52,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:59:52,880 INFO L93 Difference]: Finished difference Result 1015 states and 3043 transitions. [2021-06-05 04:59:52,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-05 04:59:52,881 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 04:59:52,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:59:52,882 INFO L225 Difference]: With dead ends: 1015 [2021-06-05 04:59:52,882 INFO L226 Difference]: Without dead ends: 855 [2021-06-05 04:59:52,882 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 1731.2ms TimeCoverageRelationStatistics Valid=182, Invalid=574, Unknown=0, NotChecked=0, Total=756 [2021-06-05 04:59:52,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2021-06-05 04:59:52,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 681. [2021-06-05 04:59:52,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 681 states, 680 states have (on average 3.1926470588235296) internal successors, (2171), 680 states have internal predecessors, (2171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:59:52,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 681 states to 681 states and 2171 transitions. [2021-06-05 04:59:52,890 INFO L78 Accepts]: Start accepts. Automaton has 681 states and 2171 transitions. Word has length 20 [2021-06-05 04:59:52,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:59:52,890 INFO L482 AbstractCegarLoop]: Abstraction has 681 states and 2171 transitions. [2021-06-05 04:59:52,890 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:59:52,890 INFO L276 IsEmpty]: Start isEmpty. Operand 681 states and 2171 transitions. [2021-06-05 04:59:52,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 04:59:52,891 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:59:52,891 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:59:53,091 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1698 [2021-06-05 04:59:53,092 INFO L430 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:59:53,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:59:53,092 INFO L82 PathProgramCache]: Analyzing trace with hash -641941827, now seen corresponding path program 13 times [2021-06-05 04:59:53,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:59:53,092 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120784939] [2021-06-05 04:59:53,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:59:53,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:59:53,241 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 04:59:53,241 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:59:53,241 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120784939] [2021-06-05 04:59:53,241 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120784939] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:59:53,241 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1954099373] [2021-06-05 04:59:53,242 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 04:59:53,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:59:53,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 18 conjunts are in the unsatisfiable core [2021-06-05 04:59:53,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 04:59:53,363 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:53,364 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:53,367 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:53,367 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:53,370 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:53,371 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:53,374 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:53,374 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:53,377 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:53,377 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:53,380 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:53,381 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:53,384 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:53,385 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:53,387 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:53,388 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:53,391 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:53,392 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:53,394 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:53,395 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:53,398 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:53,399 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:53,401 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:53,402 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:53,405 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:53,405 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:53,408 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:53,408 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:53,411 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:53,411 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:53,413 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:53,414 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:53,416 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:53,417 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:53,505 INFO L628 ElimStorePlain]: treesize reduction 60, result has 64.5 percent of original size [2021-06-05 04:59:53,506 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 04:59:53,506 INFO L247 ElimStorePlain]: Needed 18 recursive calls to eliminate 1 variables, input treesize:619, output treesize:109 [2021-06-05 04:59:53,897 INFO L446 ElimStorePlain]: Different costs {0=[char_at_9], 1=[char_at_5]} [2021-06-05 04:59:53,905 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:53,906 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:53,912 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:53,913 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:53,921 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 04:59:53,921 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:53,929 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:53,930 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:53,936 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:53,937 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:53,943 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:53,944 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:53,949 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:53,950 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:53,957 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:53,958 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:53,964 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:53,965 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:53,972 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:53,973 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:53,980 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:53,981 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:53,987 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:53,988 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:53,995 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:53,995 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:54,002 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:54,003 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:54,021 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:54,022 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:54,028 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 04:59:54,029 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:54,036 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:54,036 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:54,043 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:54,044 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:54,050 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:54,051 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:54,057 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:54,058 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:54,063 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:54,064 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:54,070 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:54,071 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:54,077 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:54,077 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:54,084 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:54,084 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:54,091 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:54,092 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:54,098 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:54,099 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:54,105 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:54,106 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:54,112 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:54,113 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:54,119 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:54,119 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:54,126 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:54,126 INFO L550 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:54,133 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 04:59:54,133 INFO L550 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:54,139 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:54,140 INFO L550 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:54,145 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:54,145 INFO L550 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:54,151 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:54,152 INFO L550 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:54,157 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:54,158 INFO L550 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:54,162 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:54,163 INFO L550 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:54,169 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:54,169 INFO L550 ElimStorePlain]: Start of recursive call 38: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:54,175 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:54,175 INFO L550 ElimStorePlain]: Start of recursive call 39: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:54,180 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:54,181 INFO L550 ElimStorePlain]: Start of recursive call 40: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:54,195 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:54,195 INFO L550 ElimStorePlain]: Start of recursive call 41: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:54,201 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:54,202 INFO L550 ElimStorePlain]: Start of recursive call 42: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:54,206 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:54,207 INFO L550 ElimStorePlain]: Start of recursive call 43: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:54,213 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:54,213 INFO L550 ElimStorePlain]: Start of recursive call 44: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:54,218 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:54,219 INFO L550 ElimStorePlain]: Start of recursive call 45: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:54,224 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:54,224 INFO L550 ElimStorePlain]: Start of recursive call 46: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:54,230 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:54,230 INFO L550 ElimStorePlain]: Start of recursive call 47: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:54,235 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:54,236 INFO L550 ElimStorePlain]: Start of recursive call 48: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:54,241 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:54,242 INFO L550 ElimStorePlain]: Start of recursive call 49: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:54,247 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:54,248 INFO L550 ElimStorePlain]: Start of recursive call 50: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:54,253 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:54,254 INFO L550 ElimStorePlain]: Start of recursive call 51: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:54,259 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:54,260 INFO L550 ElimStorePlain]: Start of recursive call 52: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:54,265 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:54,266 INFO L550 ElimStorePlain]: Start of recursive call 53: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:54,272 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:54,273 INFO L550 ElimStorePlain]: Start of recursive call 54: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:54,277 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:54,278 INFO L550 ElimStorePlain]: Start of recursive call 55: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:54,283 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:54,284 INFO L550 ElimStorePlain]: Start of recursive call 56: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:54,289 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:54,290 INFO L550 ElimStorePlain]: Start of recursive call 57: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:54,295 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:54,296 INFO L550 ElimStorePlain]: Start of recursive call 58: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:54,301 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:54,301 INFO L550 ElimStorePlain]: Start of recursive call 59: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:54,307 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:54,307 INFO L550 ElimStorePlain]: Start of recursive call 60: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:54,312 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:54,313 INFO L550 ElimStorePlain]: Start of recursive call 61: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:54,317 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:54,317 INFO L550 ElimStorePlain]: Start of recursive call 62: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:54,322 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:54,323 INFO L550 ElimStorePlain]: Start of recursive call 63: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:54,327 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:54,328 INFO L550 ElimStorePlain]: Start of recursive call 64: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:54,333 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:54,333 INFO L550 ElimStorePlain]: Start of recursive call 65: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:54,338 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:54,338 INFO L550 ElimStorePlain]: Start of recursive call 66: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:54,342 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:54,343 INFO L550 ElimStorePlain]: Start of recursive call 67: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:54,348 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:54,349 INFO L550 ElimStorePlain]: Start of recursive call 68: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:54,353 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:54,354 INFO L550 ElimStorePlain]: Start of recursive call 69: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:54,358 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:54,359 INFO L550 ElimStorePlain]: Start of recursive call 70: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:54,363 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:54,364 INFO L550 ElimStorePlain]: Start of recursive call 71: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:54,368 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:54,369 INFO L550 ElimStorePlain]: Start of recursive call 72: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:54,373 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:54,374 INFO L550 ElimStorePlain]: Start of recursive call 73: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:54,378 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:54,378 INFO L550 ElimStorePlain]: Start of recursive call 74: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:54,383 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:54,383 INFO L550 ElimStorePlain]: Start of recursive call 75: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:54,387 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:54,388 INFO L550 ElimStorePlain]: Start of recursive call 76: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:54,391 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:54,392 INFO L550 ElimStorePlain]: Start of recursive call 77: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:54,396 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:54,397 INFO L550 ElimStorePlain]: Start of recursive call 78: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:54,400 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:54,401 INFO L550 ElimStorePlain]: Start of recursive call 79: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:54,405 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:54,405 INFO L550 ElimStorePlain]: Start of recursive call 80: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:54,409 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:54,410 INFO L550 ElimStorePlain]: Start of recursive call 81: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:54,414 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:54,414 INFO L550 ElimStorePlain]: Start of recursive call 82: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:54,418 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:54,419 INFO L550 ElimStorePlain]: Start of recursive call 83: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:54,422 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:54,423 INFO L550 ElimStorePlain]: Start of recursive call 84: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:54,427 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:54,427 INFO L550 ElimStorePlain]: Start of recursive call 85: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:54,430 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:54,431 INFO L550 ElimStorePlain]: Start of recursive call 86: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:54,668 WARN L205 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 48 [2021-06-05 04:59:54,669 INFO L628 ElimStorePlain]: treesize reduction 275, result has 51.5 percent of original size [2021-06-05 04:59:54,672 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:54,673 INFO L550 ElimStorePlain]: Start of recursive call 87: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:54,676 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:54,677 INFO L550 ElimStorePlain]: Start of recursive call 88: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:54,680 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:54,681 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:54,682 INFO L550 ElimStorePlain]: Start of recursive call 89: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:54,685 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 04:59:54,686 INFO L550 ElimStorePlain]: Start of recursive call 90: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:54,688 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:54,689 INFO L550 ElimStorePlain]: Start of recursive call 91: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:54,691 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:54,696 INFO L550 ElimStorePlain]: Start of recursive call 92: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:54,699 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:54,700 INFO L550 ElimStorePlain]: Start of recursive call 93: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:54,703 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 04:59:54,703 INFO L550 ElimStorePlain]: Start of recursive call 94: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:54,799 INFO L628 ElimStorePlain]: treesize reduction 47, result has 72.8 percent of original size [2021-06-05 04:59:54,801 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 6 xjuncts. [2021-06-05 04:59:54,801 INFO L247 ElimStorePlain]: Needed 94 recursive calls to eliminate 2 variables, input treesize:4266, output treesize:126 [2021-06-05 04:59:54,928 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 04:59:54,928 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1954099373] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:59:54,929 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 04:59:54,929 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-06-05 04:59:54,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789542584] [2021-06-05 04:59:54,929 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 04:59:54,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:59:54,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 04:59:54,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-06-05 04:59:54,929 INFO L87 Difference]: Start difference. First operand 681 states and 2171 transitions. Second operand has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:59:55,205 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 42 [2021-06-05 04:59:55,512 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2021-06-05 04:59:55,633 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2021-06-05 04:59:56,008 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 47 [2021-06-05 04:59:56,237 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 54 [2021-06-05 04:59:56,367 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2021-06-05 04:59:56,500 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2021-06-05 04:59:56,780 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2021-06-05 04:59:56,909 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2021-06-05 04:59:57,032 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 37 [2021-06-05 04:59:57,286 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 48 [2021-06-05 04:59:57,500 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2021-06-05 04:59:57,638 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2021-06-05 04:59:57,869 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2021-06-05 04:59:58,224 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 50 [2021-06-05 04:59:58,675 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 54 [2021-06-05 04:59:59,178 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 52 [2021-06-05 04:59:59,322 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2021-06-05 04:59:59,486 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 48 [2021-06-05 04:59:59,700 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2021-06-05 04:59:59,829 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 44 [2021-06-05 04:59:59,951 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 44 [2021-06-05 05:00:00,108 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 45 [2021-06-05 05:00:00,247 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 42 [2021-06-05 05:00:00,420 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 50 [2021-06-05 05:00:00,766 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 39 [2021-06-05 05:00:00,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:00:00,877 INFO L93 Difference]: Finished difference Result 1326 states and 3910 transitions. [2021-06-05 05:00:00,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-06-05 05:00:00,877 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 05:00:00,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:00:00,879 INFO L225 Difference]: With dead ends: 1326 [2021-06-05 05:00:00,879 INFO L226 Difference]: Without dead ends: 1107 [2021-06-05 05:00:00,879 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1450 ImplicationChecksByTransitivity, 5747.6ms TimeCoverageRelationStatistics Valid=799, Invalid=4031, Unknown=0, NotChecked=0, Total=4830 [2021-06-05 05:00:00,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1107 states. [2021-06-05 05:00:00,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1107 to 724. [2021-06-05 05:00:00,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 724 states, 723 states have (on average 3.211618257261411) internal successors, (2322), 723 states have internal predecessors, (2322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:00,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 2322 transitions. [2021-06-05 05:00:00,888 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 2322 transitions. Word has length 20 [2021-06-05 05:00:00,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:00:00,888 INFO L482 AbstractCegarLoop]: Abstraction has 724 states and 2322 transitions. [2021-06-05 05:00:00,888 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:00,888 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 2322 transitions. [2021-06-05 05:00:00,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 05:00:00,889 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:00:00,889 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:00:01,090 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1860,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:00:01,090 INFO L430 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:00:01,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:00:01,090 INFO L82 PathProgramCache]: Analyzing trace with hash 719407490, now seen corresponding path program 5 times [2021-06-05 05:00:01,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:00:01,090 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280353591] [2021-06-05 05:00:01,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:00:01,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:00:01,237 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:00:01,237 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:00:01,237 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280353591] [2021-06-05 05:00:01,237 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280353591] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:00:01,237 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227777364] [2021-06-05 05:00:01,237 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:00:01,269 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 05:00:01,269 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:00:01,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 16 conjunts are in the unsatisfiable core [2021-06-05 05:00:01,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:00:01,439 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:00:01,440 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1227777364] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:00:01,440 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:00:01,440 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 17 [2021-06-05 05:00:01,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26211050] [2021-06-05 05:00:01,440 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 05:00:01,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:00:01,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 05:00:01,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2021-06-05 05:00:01,440 INFO L87 Difference]: Start difference. First operand 724 states and 2322 transitions. Second operand has 17 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:02,043 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 54 [2021-06-05 05:00:02,346 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 45 [2021-06-05 05:00:02,657 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 44 [2021-06-05 05:00:02,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:00:02,685 INFO L93 Difference]: Finished difference Result 970 states and 2991 transitions. [2021-06-05 05:00:02,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-05 05:00:02,685 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 05:00:02,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:00:02,686 INFO L225 Difference]: With dead ends: 970 [2021-06-05 05:00:02,686 INFO L226 Difference]: Without dead ends: 887 [2021-06-05 05:00:02,687 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 1180.8ms TimeCoverageRelationStatistics Valid=189, Invalid=803, Unknown=0, NotChecked=0, Total=992 [2021-06-05 05:00:02,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2021-06-05 05:00:02,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 707. [2021-06-05 05:00:02,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 707 states, 706 states have (on average 3.1997167138810196) internal successors, (2259), 706 states have internal predecessors, (2259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:02,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 707 states to 707 states and 2259 transitions. [2021-06-05 05:00:02,695 INFO L78 Accepts]: Start accepts. Automaton has 707 states and 2259 transitions. Word has length 20 [2021-06-05 05:00:02,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:00:02,695 INFO L482 AbstractCegarLoop]: Abstraction has 707 states and 2259 transitions. [2021-06-05 05:00:02,695 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:02,695 INFO L276 IsEmpty]: Start isEmpty. Operand 707 states and 2259 transitions. [2021-06-05 05:00:02,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 05:00:02,696 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:00:02,696 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:00:02,896 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1974 [2021-06-05 05:00:02,897 INFO L430 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:00:02,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:00:02,897 INFO L82 PathProgramCache]: Analyzing trace with hash 254005020, now seen corresponding path program 6 times [2021-06-05 05:00:02,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:00:02,897 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477608654] [2021-06-05 05:00:02,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:00:02,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:00:03,000 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:00:03,001 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:00:03,001 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477608654] [2021-06-05 05:00:03,001 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477608654] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:00:03,001 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801322821] [2021-06-05 05:00:03,001 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:00:03,042 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 05:00:03,042 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:00:03,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 16 conjunts are in the unsatisfiable core [2021-06-05 05:00:03,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:00:03,182 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:00:03,182 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801322821] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:00:03,182 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:00:03,182 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-06-05 05:00:03,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122871406] [2021-06-05 05:00:03,182 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 05:00:03,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:00:03,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 05:00:03,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-06-05 05:00:03,182 INFO L87 Difference]: Start difference. First operand 707 states and 2259 transitions. Second operand has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:04,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:00:04,116 INFO L93 Difference]: Finished difference Result 1230 states and 3723 transitions. [2021-06-05 05:00:04,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-05 05:00:04,117 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 05:00:04,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:00:04,118 INFO L225 Difference]: With dead ends: 1230 [2021-06-05 05:00:04,118 INFO L226 Difference]: Without dead ends: 1088 [2021-06-05 05:00:04,119 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 818.0ms TimeCoverageRelationStatistics Valid=190, Invalid=680, Unknown=0, NotChecked=0, Total=870 [2021-06-05 05:00:04,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1088 states. [2021-06-05 05:00:04,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1088 to 721. [2021-06-05 05:00:04,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 721 states, 720 states have (on average 3.2263888888888888) internal successors, (2323), 720 states have internal predecessors, (2323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:04,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 2323 transitions. [2021-06-05 05:00:04,127 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 2323 transitions. Word has length 20 [2021-06-05 05:00:04,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:00:04,128 INFO L482 AbstractCegarLoop]: Abstraction has 721 states and 2323 transitions. [2021-06-05 05:00:04,128 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:04,128 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 2323 transitions. [2021-06-05 05:00:04,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 05:00:04,129 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:00:04,129 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:00:04,329 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1982 [2021-06-05 05:00:04,330 INFO L430 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:00:04,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:00:04,330 INFO L82 PathProgramCache]: Analyzing trace with hash -1325415994, now seen corresponding path program 7 times [2021-06-05 05:00:04,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:00:04,330 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937984225] [2021-06-05 05:00:04,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:00:04,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:00:04,497 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:00:04,497 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:00:04,497 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937984225] [2021-06-05 05:00:04,497 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937984225] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:00:04,497 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1917885103] [2021-06-05 05:00:04,497 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:00:04,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:00:04,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 16 conjunts are in the unsatisfiable core [2021-06-05 05:00:04,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:00:04,679 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:00:04,679 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1917885103] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:00:04,679 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:00:04,679 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 17 [2021-06-05 05:00:04,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255992361] [2021-06-05 05:00:04,680 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 05:00:04,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:00:04,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 05:00:04,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2021-06-05 05:00:04,680 INFO L87 Difference]: Start difference. First operand 721 states and 2323 transitions. Second operand has 17 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:05,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:00:05,817 INFO L93 Difference]: Finished difference Result 1151 states and 3531 transitions. [2021-06-05 05:00:05,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-05 05:00:05,817 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 05:00:05,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:00:05,819 INFO L225 Difference]: With dead ends: 1151 [2021-06-05 05:00:05,819 INFO L226 Difference]: Without dead ends: 1024 [2021-06-05 05:00:05,819 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 1081.7ms TimeCoverageRelationStatistics Valid=273, Invalid=987, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 05:00:05,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1024 states. [2021-06-05 05:00:05,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 767. [2021-06-05 05:00:05,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 767 states, 766 states have (on average 3.1971279373368144) internal successors, (2449), 766 states have internal predecessors, (2449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:05,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 767 states to 767 states and 2449 transitions. [2021-06-05 05:00:05,828 INFO L78 Accepts]: Start accepts. Automaton has 767 states and 2449 transitions. Word has length 20 [2021-06-05 05:00:05,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:00:05,828 INFO L482 AbstractCegarLoop]: Abstraction has 767 states and 2449 transitions. [2021-06-05 05:00:05,828 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:05,828 INFO L276 IsEmpty]: Start isEmpty. Operand 767 states and 2449 transitions. [2021-06-05 05:00:05,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 05:00:05,829 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:00:05,830 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:00:06,030 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1994 [2021-06-05 05:00:06,030 INFO L430 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:00:06,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:00:06,030 INFO L82 PathProgramCache]: Analyzing trace with hash -347274408, now seen corresponding path program 8 times [2021-06-05 05:00:06,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:00:06,031 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712917139] [2021-06-05 05:00:06,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:00:06,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:00:06,168 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:00:06,168 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:00:06,168 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712917139] [2021-06-05 05:00:06,168 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712917139] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:00:06,168 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [608223523] [2021-06-05 05:00:06,168 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:00:06,201 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 05:00:06,201 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:00:06,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 16 conjunts are in the unsatisfiable core [2021-06-05 05:00:06,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:00:06,345 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:00:06,346 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:06,349 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:00:06,350 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:06,353 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:00:06,354 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:06,357 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:06,357 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:06,360 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:06,361 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:06,364 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:06,364 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:06,367 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:00:06,368 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:06,370 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:06,371 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:06,374 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:06,374 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:06,392 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:06,393 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:06,396 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:06,397 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:06,401 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:00:06,402 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:06,405 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:00:06,407 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:06,410 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:00:06,411 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:06,414 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:06,415 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:06,418 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:06,419 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:06,422 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:06,423 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:06,425 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:06,426 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:06,429 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:00:06,430 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:06,433 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:00:06,435 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:06,437 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:06,438 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:06,527 INFO L628 ElimStorePlain]: treesize reduction 83, result has 53.9 percent of original size [2021-06-05 05:00:06,530 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 3 dim-0 vars, and 4 xjuncts. [2021-06-05 05:00:06,531 INFO L247 ElimStorePlain]: Needed 22 recursive calls to eliminate 2 variables, input treesize:710, output treesize:89 [2021-06-05 05:00:06,968 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:00:06,968 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [608223523] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:00:06,968 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:00:06,968 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 16 [2021-06-05 05:00:06,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670227370] [2021-06-05 05:00:06,968 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 05:00:06,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:00:06,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 05:00:06,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2021-06-05 05:00:06,969 INFO L87 Difference]: Start difference. First operand 767 states and 2449 transitions. Second operand has 16 states, 16 states have (on average 2.1875) internal successors, (35), 16 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:07,476 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 67 [2021-06-05 05:00:07,649 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 65 [2021-06-05 05:00:07,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:00:07,950 INFO L93 Difference]: Finished difference Result 980 states and 3009 transitions. [2021-06-05 05:00:07,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-05 05:00:07,950 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.1875) internal successors, (35), 16 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 05:00:07,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:00:07,952 INFO L225 Difference]: With dead ends: 980 [2021-06-05 05:00:07,952 INFO L226 Difference]: Without dead ends: 902 [2021-06-05 05:00:07,952 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 886.7ms TimeCoverageRelationStatistics Valid=110, Invalid=540, Unknown=0, NotChecked=0, Total=650 [2021-06-05 05:00:07,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 902 states. [2021-06-05 05:00:07,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 902 to 775. [2021-06-05 05:00:07,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 775 states, 774 states have (on average 3.202842377260982) internal successors, (2479), 774 states have internal predecessors, (2479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:07,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 2479 transitions. [2021-06-05 05:00:07,961 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 2479 transitions. Word has length 20 [2021-06-05 05:00:07,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:00:07,961 INFO L482 AbstractCegarLoop]: Abstraction has 775 states and 2479 transitions. [2021-06-05 05:00:07,961 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.1875) internal successors, (35), 16 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:07,961 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 2479 transitions. [2021-06-05 05:00:07,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 05:00:07,962 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:00:07,963 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:00:08,163 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2008,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:00:08,163 INFO L430 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:00:08,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:00:08,164 INFO L82 PathProgramCache]: Analyzing trace with hash -1175816270, now seen corresponding path program 9 times [2021-06-05 05:00:08,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:00:08,164 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306104846] [2021-06-05 05:00:08,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:00:08,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:00:08,308 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:00:08,308 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:00:08,308 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306104846] [2021-06-05 05:00:08,309 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306104846] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:00:08,309 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2007345414] [2021-06-05 05:00:08,309 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:00:08,343 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-06-05 05:00:08,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:00:08,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 16 conjunts are in the unsatisfiable core [2021-06-05 05:00:08,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:00:08,550 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:00:08,550 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2007345414] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:00:08,550 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:00:08,550 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 17 [2021-06-05 05:00:08,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273553145] [2021-06-05 05:00:08,550 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 05:00:08,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:00:08,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 05:00:08,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2021-06-05 05:00:08,551 INFO L87 Difference]: Start difference. First operand 775 states and 2479 transitions. Second operand has 17 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:10,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:00:10,213 INFO L93 Difference]: Finished difference Result 1120 states and 3470 transitions. [2021-06-05 05:00:10,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-05 05:00:10,214 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 05:00:10,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:00:10,215 INFO L225 Difference]: With dead ends: 1120 [2021-06-05 05:00:10,215 INFO L226 Difference]: Without dead ends: 1036 [2021-06-05 05:00:10,216 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 1547.1ms TimeCoverageRelationStatistics Valid=366, Invalid=1440, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 05:00:10,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1036 states. [2021-06-05 05:00:10,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1036 to 769. [2021-06-05 05:00:10,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 769 states, 768 states have (on average 3.1953125) internal successors, (2454), 768 states have internal predecessors, (2454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:10,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 2454 transitions. [2021-06-05 05:00:10,226 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 2454 transitions. Word has length 20 [2021-06-05 05:00:10,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:00:10,226 INFO L482 AbstractCegarLoop]: Abstraction has 769 states and 2454 transitions. [2021-06-05 05:00:10,226 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:10,226 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 2454 transitions. [2021-06-05 05:00:10,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 05:00:10,227 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:00:10,227 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:00:10,429 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2127 [2021-06-05 05:00:10,429 INFO L430 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:00:10,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:00:10,429 INFO L82 PathProgramCache]: Analyzing trace with hash 1333148950, now seen corresponding path program 10 times [2021-06-05 05:00:10,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:00:10,429 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007987142] [2021-06-05 05:00:10,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:00:10,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:00:10,503 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:00:10,503 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:00:10,503 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007987142] [2021-06-05 05:00:10,503 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007987142] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:00:10,503 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12763606] [2021-06-05 05:00:10,503 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:00:10,534 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 05:00:10,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:00:10,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 16 conjunts are in the unsatisfiable core [2021-06-05 05:00:10,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:00:10,682 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:00:10,682 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12763606] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:00:10,682 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:00:10,682 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-06-05 05:00:10,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335305419] [2021-06-05 05:00:10,682 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 05:00:10,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:00:10,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 05:00:10,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-06-05 05:00:10,683 INFO L87 Difference]: Start difference. First operand 769 states and 2454 transitions. Second operand has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:11,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:00:11,925 INFO L93 Difference]: Finished difference Result 1254 states and 3819 transitions. [2021-06-05 05:00:11,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-05 05:00:11,926 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 05:00:11,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:00:11,927 INFO L225 Difference]: With dead ends: 1254 [2021-06-05 05:00:11,927 INFO L226 Difference]: Without dead ends: 1107 [2021-06-05 05:00:11,927 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 1074.8ms TimeCoverageRelationStatistics Valid=294, Invalid=1188, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 05:00:11,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1107 states. [2021-06-05 05:00:11,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1107 to 758. [2021-06-05 05:00:11,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 758 states, 757 states have (on average 3.1875825627476884) internal successors, (2413), 757 states have internal predecessors, (2413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:11,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 758 states to 758 states and 2413 transitions. [2021-06-05 05:00:11,937 INFO L78 Accepts]: Start accepts. Automaton has 758 states and 2413 transitions. Word has length 20 [2021-06-05 05:00:11,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:00:11,937 INFO L482 AbstractCegarLoop]: Abstraction has 758 states and 2413 transitions. [2021-06-05 05:00:11,937 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:11,937 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states and 2413 transitions. [2021-06-05 05:00:11,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 05:00:11,938 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:00:11,938 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:00:12,138 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2141,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:00:12,138 INFO L430 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:00:12,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:00:12,139 INFO L82 PathProgramCache]: Analyzing trace with hash -1937783866, now seen corresponding path program 11 times [2021-06-05 05:00:12,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:00:12,139 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121789674] [2021-06-05 05:00:12,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:00:12,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:00:12,218 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:00:12,218 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:00:12,218 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121789674] [2021-06-05 05:00:12,218 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121789674] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:00:12,218 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437629885] [2021-06-05 05:00:12,218 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:00:12,262 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 05:00:12,262 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:00:12,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 16 conjunts are in the unsatisfiable core [2021-06-05 05:00:12,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:00:12,483 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:00:12,483 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [437629885] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:00:12,483 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:00:12,483 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-06-05 05:00:12,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679695114] [2021-06-05 05:00:12,483 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 05:00:12,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:00:12,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 05:00:12,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-06-05 05:00:12,484 INFO L87 Difference]: Start difference. First operand 758 states and 2413 transitions. Second operand has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:12,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:00:12,712 INFO L93 Difference]: Finished difference Result 962 states and 2957 transitions. [2021-06-05 05:00:12,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 05:00:12,713 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 05:00:12,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:00:12,714 INFO L225 Difference]: With dead ends: 962 [2021-06-05 05:00:12,714 INFO L226 Difference]: Without dead ends: 915 [2021-06-05 05:00:12,714 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 315.3ms TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2021-06-05 05:00:12,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 915 states. [2021-06-05 05:00:12,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 915 to 744. [2021-06-05 05:00:12,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 744 states, 743 states have (on average 3.1601615074024227) internal successors, (2348), 743 states have internal predecessors, (2348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:12,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 2348 transitions. [2021-06-05 05:00:12,723 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 2348 transitions. Word has length 20 [2021-06-05 05:00:12,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:00:12,723 INFO L482 AbstractCegarLoop]: Abstraction has 744 states and 2348 transitions. [2021-06-05 05:00:12,723 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:12,723 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 2348 transitions. [2021-06-05 05:00:12,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 05:00:12,724 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:00:12,724 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:00:12,925 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2155 [2021-06-05 05:00:12,925 INFO L430 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:00:12,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:00:12,926 INFO L82 PathProgramCache]: Analyzing trace with hash 1895698515, now seen corresponding path program 14 times [2021-06-05 05:00:12,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:00:12,926 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894002671] [2021-06-05 05:00:12,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:00:12,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:00:13,018 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:00:13,018 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:00:13,018 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894002671] [2021-06-05 05:00:13,018 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894002671] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:00:13,018 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732763141] [2021-06-05 05:00:13,018 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:00:13,055 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 05:00:13,055 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:00:13,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 18 conjunts are in the unsatisfiable core [2021-06-05 05:00:13,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:00:13,127 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:00:13,128 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:13,131 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:00:13,131 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:13,134 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:00:13,135 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:13,137 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:13,138 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:13,141 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:00:13,141 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:13,144 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:13,144 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:13,146 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:13,147 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:13,174 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:00:13,175 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:13,177 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:13,178 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:13,180 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:00:13,181 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:13,183 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:13,184 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:13,186 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:13,187 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:13,189 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:13,190 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:13,192 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:13,193 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:13,195 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:13,196 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:13,198 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:00:13,199 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:13,202 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:13,202 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:13,204 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:13,205 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:13,207 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:13,207 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:13,271 INFO L628 ElimStorePlain]: treesize reduction 50, result has 62.7 percent of original size [2021-06-05 05:00:13,272 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 05:00:13,272 INFO L247 ElimStorePlain]: Needed 20 recursive calls to eliminate 1 variables, input treesize:595, output treesize:84 [2021-06-05 05:00:13,580 INFO L446 ElimStorePlain]: Different costs {0=[char_at_9], 1=[char_at_5]} [2021-06-05 05:00:13,585 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:13,585 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:13,589 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:13,590 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:13,594 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:13,595 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:13,599 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:00:13,600 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:13,604 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:13,605 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:13,609 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:00:13,610 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:13,615 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:13,615 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:13,619 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:13,620 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:13,624 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:13,625 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:13,629 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:00:13,630 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:13,635 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:13,635 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:13,640 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:13,640 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:13,644 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:13,645 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:13,648 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:13,649 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:13,652 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:13,653 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:13,657 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:00:13,658 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:13,662 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:00:13,663 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:13,668 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:13,669 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:13,673 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:00:13,674 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:13,678 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:00:13,679 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:13,683 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:13,684 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:13,688 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:00:13,689 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:13,693 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:13,693 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:13,697 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:13,698 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:13,702 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:13,703 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:13,707 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:13,707 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:13,711 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:13,712 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:13,716 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:13,716 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:13,720 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:13,721 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:13,725 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:13,725 INFO L550 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:13,729 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:13,729 INFO L550 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:13,733 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:13,734 INFO L550 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:13,737 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:13,738 INFO L550 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:13,741 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:13,742 INFO L550 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:13,745 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:13,746 INFO L550 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:13,749 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:13,750 INFO L550 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:13,754 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:00:13,754 INFO L550 ElimStorePlain]: Start of recursive call 38: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:13,758 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:13,759 INFO L550 ElimStorePlain]: Start of recursive call 39: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:13,762 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:13,762 INFO L550 ElimStorePlain]: Start of recursive call 40: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:13,766 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:13,766 INFO L550 ElimStorePlain]: Start of recursive call 41: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:13,770 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:13,770 INFO L550 ElimStorePlain]: Start of recursive call 42: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:13,773 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:13,774 INFO L550 ElimStorePlain]: Start of recursive call 43: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:13,777 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:13,778 INFO L550 ElimStorePlain]: Start of recursive call 44: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:13,781 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:13,782 INFO L550 ElimStorePlain]: Start of recursive call 45: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:13,785 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:13,786 INFO L550 ElimStorePlain]: Start of recursive call 46: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:13,797 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:13,798 INFO L550 ElimStorePlain]: Start of recursive call 47: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:13,802 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:00:13,802 INFO L550 ElimStorePlain]: Start of recursive call 48: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:13,805 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:13,806 INFO L550 ElimStorePlain]: Start of recursive call 49: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:13,809 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:13,809 INFO L550 ElimStorePlain]: Start of recursive call 50: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:13,813 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:00:13,813 INFO L550 ElimStorePlain]: Start of recursive call 51: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:13,817 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:13,817 INFO L550 ElimStorePlain]: Start of recursive call 52: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:13,820 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:13,821 INFO L550 ElimStorePlain]: Start of recursive call 53: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:13,824 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:13,825 INFO L550 ElimStorePlain]: Start of recursive call 54: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:13,828 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:13,828 INFO L550 ElimStorePlain]: Start of recursive call 55: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:13,831 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:13,832 INFO L550 ElimStorePlain]: Start of recursive call 56: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:13,834 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:13,835 INFO L550 ElimStorePlain]: Start of recursive call 57: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:13,838 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:13,838 INFO L550 ElimStorePlain]: Start of recursive call 58: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:13,926 INFO L628 ElimStorePlain]: treesize reduction 109, result has 50.7 percent of original size [2021-06-05 05:00:13,929 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:00:13,930 INFO L550 ElimStorePlain]: Start of recursive call 59: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:13,932 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:13,933 INFO L550 ElimStorePlain]: Start of recursive call 60: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:13,935 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:00:13,936 INFO L550 ElimStorePlain]: Start of recursive call 61: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:13,938 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:00:13,939 INFO L550 ElimStorePlain]: Start of recursive call 62: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:13,961 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:00:13,962 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-06-05 05:00:13,962 INFO L247 ElimStorePlain]: Needed 62 recursive calls to eliminate 2 variables, input treesize:2152, output treesize:61 [2021-06-05 05:00:14,028 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:00:14,028 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [732763141] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:00:14,028 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:00:14,028 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 15 [2021-06-05 05:00:14,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062554256] [2021-06-05 05:00:14,028 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 05:00:14,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:00:14,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 05:00:14,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-06-05 05:00:14,029 INFO L87 Difference]: Start difference. First operand 744 states and 2348 transitions. Second operand has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:14,570 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 39 [2021-06-05 05:00:15,010 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2021-06-05 05:00:15,162 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 54 [2021-06-05 05:00:15,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:00:15,189 INFO L93 Difference]: Finished difference Result 849 states and 2606 transitions. [2021-06-05 05:00:15,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-05 05:00:15,189 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 05:00:15,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:00:15,190 INFO L225 Difference]: With dead ends: 849 [2021-06-05 05:00:15,190 INFO L226 Difference]: Without dead ends: 751 [2021-06-05 05:00:15,191 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1125.6ms TimeCoverageRelationStatistics Valid=154, Invalid=548, Unknown=0, NotChecked=0, Total=702 [2021-06-05 05:00:15,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 751 states. [2021-06-05 05:00:15,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 751 to 722. [2021-06-05 05:00:15,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 722 states, 721 states have (on average 3.1373092926490984) internal successors, (2262), 721 states have internal predecessors, (2262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:15,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 722 states to 722 states and 2262 transitions. [2021-06-05 05:00:15,198 INFO L78 Accepts]: Start accepts. Automaton has 722 states and 2262 transitions. Word has length 20 [2021-06-05 05:00:15,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:00:15,198 INFO L482 AbstractCegarLoop]: Abstraction has 722 states and 2262 transitions. [2021-06-05 05:00:15,198 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:15,198 INFO L276 IsEmpty]: Start isEmpty. Operand 722 states and 2262 transitions. [2021-06-05 05:00:15,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 05:00:15,199 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:00:15,199 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:00:15,399 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2168 [2021-06-05 05:00:15,399 INFO L430 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:00:15,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:00:15,400 INFO L82 PathProgramCache]: Analyzing trace with hash 1556220975, now seen corresponding path program 15 times [2021-06-05 05:00:15,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:00:15,400 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591146558] [2021-06-05 05:00:15,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:00:15,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:00:15,585 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:00:15,585 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:00:15,585 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591146558] [2021-06-05 05:00:15,585 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591146558] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:00:15,585 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947570996] [2021-06-05 05:00:15,585 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:00:15,623 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-06-05 05:00:15,623 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:00:15,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 18 conjunts are in the unsatisfiable core [2021-06-05 05:00:15,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:00:15,766 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:15,767 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:15,770 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:00:15,771 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:15,775 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:15,775 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:15,779 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:00:15,780 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:15,783 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:00:15,784 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:15,788 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:00:15,789 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:15,793 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:15,793 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:15,796 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:15,797 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:15,801 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:00:15,802 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:15,804 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:15,805 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:15,808 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:15,809 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:15,812 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:15,813 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:15,816 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:15,816 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:15,820 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:15,820 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:15,823 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:15,824 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:15,827 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:00:15,829 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:15,831 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:15,832 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:15,834 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:15,835 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:15,837 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:15,837 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:15,911 INFO L628 ElimStorePlain]: treesize reduction 50, result has 62.7 percent of original size [2021-06-05 05:00:15,912 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 05:00:15,912 INFO L247 ElimStorePlain]: Needed 20 recursive calls to eliminate 1 variables, input treesize:591, output treesize:84 [2021-06-05 05:00:16,429 INFO L446 ElimStorePlain]: Different costs {0=[char_at_9], 1=[char_at_5]} [2021-06-05 05:00:16,438 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:16,439 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:16,446 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:16,447 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:16,454 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:16,455 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:16,464 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:16,465 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:16,493 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:00:16,494 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:16,501 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:16,502 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:16,509 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:16,509 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:16,520 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:16,521 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:16,533 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:00:16,534 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:16,543 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:00:16,544 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:16,554 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:00:16,556 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:16,564 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:16,565 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:16,573 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:00:16,575 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:16,582 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:16,583 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:16,593 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:16,594 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:16,602 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:16,602 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:16,612 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:00:16,614 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:16,623 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:00:16,624 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:16,632 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:16,633 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:16,643 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:00:16,644 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:16,651 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:00:16,652 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:16,658 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:16,659 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:16,664 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:16,665 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:16,670 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:16,671 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:16,678 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:16,679 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:16,685 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:00:16,686 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:16,691 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:16,692 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:16,698 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:16,699 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:16,704 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:00:16,705 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:16,711 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:00:16,712 INFO L550 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:16,718 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:16,719 INFO L550 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:16,724 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:16,725 INFO L550 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:16,731 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:16,732 INFO L550 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:16,737 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:16,737 INFO L550 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:16,744 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:16,744 INFO L550 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:16,749 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:16,750 INFO L550 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:16,755 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:16,756 INFO L550 ElimStorePlain]: Start of recursive call 38: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:16,761 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:16,761 INFO L550 ElimStorePlain]: Start of recursive call 39: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:16,767 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:16,768 INFO L550 ElimStorePlain]: Start of recursive call 40: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:16,773 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:16,773 INFO L550 ElimStorePlain]: Start of recursive call 41: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:16,778 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:16,779 INFO L550 ElimStorePlain]: Start of recursive call 42: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:16,784 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:00:16,785 INFO L550 ElimStorePlain]: Start of recursive call 43: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:16,790 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:16,791 INFO L550 ElimStorePlain]: Start of recursive call 44: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:16,796 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:16,797 INFO L550 ElimStorePlain]: Start of recursive call 45: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:16,803 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:16,803 INFO L550 ElimStorePlain]: Start of recursive call 46: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:16,809 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:16,810 INFO L550 ElimStorePlain]: Start of recursive call 47: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:16,815 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:16,816 INFO L550 ElimStorePlain]: Start of recursive call 48: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:16,821 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:16,821 INFO L550 ElimStorePlain]: Start of recursive call 49: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:16,826 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:16,827 INFO L550 ElimStorePlain]: Start of recursive call 50: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:16,832 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:16,833 INFO L550 ElimStorePlain]: Start of recursive call 51: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:16,838 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:16,838 INFO L550 ElimStorePlain]: Start of recursive call 52: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:16,843 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:16,844 INFO L550 ElimStorePlain]: Start of recursive call 53: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:16,848 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:16,849 INFO L550 ElimStorePlain]: Start of recursive call 54: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:16,854 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:16,855 INFO L550 ElimStorePlain]: Start of recursive call 55: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:16,860 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:16,860 INFO L550 ElimStorePlain]: Start of recursive call 56: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:16,865 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:16,865 INFO L550 ElimStorePlain]: Start of recursive call 57: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:16,870 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:16,871 INFO L550 ElimStorePlain]: Start of recursive call 58: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:16,875 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:16,876 INFO L550 ElimStorePlain]: Start of recursive call 59: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:16,881 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:16,881 INFO L550 ElimStorePlain]: Start of recursive call 60: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:16,886 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:00:16,887 INFO L550 ElimStorePlain]: Start of recursive call 61: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:16,892 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:16,892 INFO L550 ElimStorePlain]: Start of recursive call 62: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:16,897 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:00:16,898 INFO L550 ElimStorePlain]: Start of recursive call 63: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:16,903 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:16,903 INFO L550 ElimStorePlain]: Start of recursive call 64: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:16,908 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:16,909 INFO L550 ElimStorePlain]: Start of recursive call 65: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:16,913 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:16,913 INFO L550 ElimStorePlain]: Start of recursive call 66: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:16,918 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:16,919 INFO L550 ElimStorePlain]: Start of recursive call 67: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:16,923 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:16,924 INFO L550 ElimStorePlain]: Start of recursive call 68: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:16,928 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:16,929 INFO L550 ElimStorePlain]: Start of recursive call 69: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:16,933 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:16,934 INFO L550 ElimStorePlain]: Start of recursive call 70: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:16,938 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:16,939 INFO L550 ElimStorePlain]: Start of recursive call 71: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:16,943 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:16,944 INFO L550 ElimStorePlain]: Start of recursive call 72: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:16,948 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:16,948 INFO L550 ElimStorePlain]: Start of recursive call 73: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:16,953 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:16,954 INFO L550 ElimStorePlain]: Start of recursive call 74: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:16,958 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:16,958 INFO L550 ElimStorePlain]: Start of recursive call 75: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:16,963 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:16,963 INFO L550 ElimStorePlain]: Start of recursive call 76: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:16,967 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:16,968 INFO L550 ElimStorePlain]: Start of recursive call 77: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:16,972 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:16,972 INFO L550 ElimStorePlain]: Start of recursive call 78: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:16,977 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:16,977 INFO L550 ElimStorePlain]: Start of recursive call 79: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:16,981 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:16,982 INFO L550 ElimStorePlain]: Start of recursive call 80: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:16,985 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:16,986 INFO L550 ElimStorePlain]: Start of recursive call 81: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:16,990 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:16,990 INFO L550 ElimStorePlain]: Start of recursive call 82: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:16,994 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:16,995 INFO L550 ElimStorePlain]: Start of recursive call 83: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:16,998 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:16,999 INFO L550 ElimStorePlain]: Start of recursive call 84: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:17,003 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:17,003 INFO L550 ElimStorePlain]: Start of recursive call 85: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:17,007 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:17,008 INFO L550 ElimStorePlain]: Start of recursive call 86: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:17,240 WARN L205 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2021-06-05 05:00:17,240 INFO L628 ElimStorePlain]: treesize reduction 261, result has 52.8 percent of original size [2021-06-05 05:00:17,245 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:00:17,246 INFO L550 ElimStorePlain]: Start of recursive call 87: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:17,249 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:00:17,250 INFO L550 ElimStorePlain]: Start of recursive call 88: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:17,253 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:17,254 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:00:17,255 INFO L550 ElimStorePlain]: Start of recursive call 89: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:17,259 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:00:17,260 INFO L550 ElimStorePlain]: Start of recursive call 90: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:17,263 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:17,264 INFO L550 ElimStorePlain]: Start of recursive call 91: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:17,266 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:17,267 INFO L550 ElimStorePlain]: Start of recursive call 92: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:17,270 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:17,270 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:00:17,271 INFO L550 ElimStorePlain]: Start of recursive call 93: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:17,274 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:00:17,275 INFO L550 ElimStorePlain]: Start of recursive call 94: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:17,372 INFO L628 ElimStorePlain]: treesize reduction 47, result has 72.8 percent of original size [2021-06-05 05:00:17,373 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 6 xjuncts. [2021-06-05 05:00:17,374 INFO L247 ElimStorePlain]: Needed 94 recursive calls to eliminate 2 variables, input treesize:4000, output treesize:126 [2021-06-05 05:00:17,509 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:00:17,510 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [947570996] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:00:17,510 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:00:17,510 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 15 [2021-06-05 05:00:17,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572757247] [2021-06-05 05:00:17,510 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 05:00:17,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:00:17,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 05:00:17,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2021-06-05 05:00:17,510 INFO L87 Difference]: Start difference. First operand 722 states and 2262 transitions. Second operand has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:17,841 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 36 [2021-06-05 05:00:18,231 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 44 [2021-06-05 05:00:18,456 WARN L205 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 52 [2021-06-05 05:00:18,589 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 38 [2021-06-05 05:00:18,841 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 46 [2021-06-05 05:00:19,084 WARN L205 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2021-06-05 05:00:19,274 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 51 [2021-06-05 05:00:19,426 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 51 [2021-06-05 05:00:19,566 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 52 [2021-06-05 05:00:19,713 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 53 [2021-06-05 05:00:19,843 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 45 [2021-06-05 05:00:19,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:00:19,848 INFO L93 Difference]: Finished difference Result 980 states and 2956 transitions. [2021-06-05 05:00:19,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 05:00:19,849 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 05:00:19,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:00:19,850 INFO L225 Difference]: With dead ends: 980 [2021-06-05 05:00:19,850 INFO L226 Difference]: Without dead ends: 869 [2021-06-05 05:00:19,850 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 2390.9ms TimeCoverageRelationStatistics Valid=266, Invalid=924, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 05:00:19,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 869 states. [2021-06-05 05:00:19,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 869 to 698. [2021-06-05 05:00:19,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 698 states, 697 states have (on average 3.091822094691535) internal successors, (2155), 697 states have internal predecessors, (2155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:19,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 2155 transitions. [2021-06-05 05:00:19,858 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 2155 transitions. Word has length 20 [2021-06-05 05:00:19,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:00:19,858 INFO L482 AbstractCegarLoop]: Abstraction has 698 states and 2155 transitions. [2021-06-05 05:00:19,859 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:19,859 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 2155 transitions. [2021-06-05 05:00:19,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 05:00:19,859 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:00:19,859 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:00:20,060 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2258 [2021-06-05 05:00:20,060 INFO L430 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:00:20,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:00:20,060 INFO L82 PathProgramCache]: Analyzing trace with hash -239221005, now seen corresponding path program 16 times [2021-06-05 05:00:20,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:00:20,060 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684987065] [2021-06-05 05:00:20,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:00:20,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:00:20,277 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:00:20,277 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:00:20,277 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684987065] [2021-06-05 05:00:20,278 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684987065] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:00:20,278 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1891163276] [2021-06-05 05:00:20,278 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:00:20,311 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 05:00:20,311 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:00:20,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 18 conjunts are in the unsatisfiable core [2021-06-05 05:00:20,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:00:20,393 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:00:20,394 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:20,396 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:00:20,397 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:20,400 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:00:20,401 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:20,404 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:20,404 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:20,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:00:20,408 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:20,410 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:20,410 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:20,413 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:20,413 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:20,415 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:20,416 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:20,419 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:00:20,420 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:20,422 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:00:20,423 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:20,426 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:20,426 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:20,429 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:20,429 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:20,432 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:20,432 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:20,435 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:20,435 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:20,438 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:20,438 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:20,441 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:00:20,442 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:20,444 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:20,444 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:20,447 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:20,447 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:20,449 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:20,450 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:20,513 INFO L628 ElimStorePlain]: treesize reduction 50, result has 62.7 percent of original size [2021-06-05 05:00:20,514 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 05:00:20,514 INFO L247 ElimStorePlain]: Needed 20 recursive calls to eliminate 1 variables, input treesize:595, output treesize:84 [2021-06-05 05:00:21,008 INFO L446 ElimStorePlain]: Different costs {0=[char_at_9], 1=[char_at_5]} [2021-06-05 05:00:21,017 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:21,018 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:21,025 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:21,026 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:21,034 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:21,035 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:21,044 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:21,069 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:21,079 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:00:21,080 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:21,091 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:21,092 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:21,099 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:21,100 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:21,111 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:21,112 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:21,121 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:00:21,122 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:21,131 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:00:21,131 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:21,141 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:00:21,142 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:21,150 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:21,151 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:21,158 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:00:21,159 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:21,165 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:21,165 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:21,172 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:21,173 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:21,178 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:21,179 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:21,186 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:00:21,187 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:21,193 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:00:21,194 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:21,199 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:21,200 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:21,206 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:00:21,207 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:21,213 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:00:21,214 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:21,221 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:21,221 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:21,227 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:21,227 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:21,232 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:21,233 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:21,239 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:21,240 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:21,247 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:00:21,248 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:21,254 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:21,255 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:21,263 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:21,263 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:21,270 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:00:21,271 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:21,278 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:00:21,279 INFO L550 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:21,286 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:21,287 INFO L550 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:21,294 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:21,294 INFO L550 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:21,302 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:21,302 INFO L550 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:21,308 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:21,309 INFO L550 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:21,316 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:21,316 INFO L550 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:21,322 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:21,323 INFO L550 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:21,329 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:21,329 INFO L550 ElimStorePlain]: Start of recursive call 38: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:21,335 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:21,336 INFO L550 ElimStorePlain]: Start of recursive call 39: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:21,342 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:21,343 INFO L550 ElimStorePlain]: Start of recursive call 40: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:21,348 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:21,349 INFO L550 ElimStorePlain]: Start of recursive call 41: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:21,354 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:21,355 INFO L550 ElimStorePlain]: Start of recursive call 42: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:21,371 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:00:21,372 INFO L550 ElimStorePlain]: Start of recursive call 43: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:21,379 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:21,380 INFO L550 ElimStorePlain]: Start of recursive call 44: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:21,387 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:21,387 INFO L550 ElimStorePlain]: Start of recursive call 45: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:21,394 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:21,395 INFO L550 ElimStorePlain]: Start of recursive call 46: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:21,402 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:21,402 INFO L550 ElimStorePlain]: Start of recursive call 47: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:21,409 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:21,409 INFO L550 ElimStorePlain]: Start of recursive call 48: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:21,415 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:21,416 INFO L550 ElimStorePlain]: Start of recursive call 49: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:21,421 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:21,422 INFO L550 ElimStorePlain]: Start of recursive call 50: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:21,429 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:21,429 INFO L550 ElimStorePlain]: Start of recursive call 51: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:21,435 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:21,436 INFO L550 ElimStorePlain]: Start of recursive call 52: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:21,443 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:21,443 INFO L550 ElimStorePlain]: Start of recursive call 53: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:21,449 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:21,450 INFO L550 ElimStorePlain]: Start of recursive call 54: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:21,455 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:21,456 INFO L550 ElimStorePlain]: Start of recursive call 55: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:21,462 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:21,463 INFO L550 ElimStorePlain]: Start of recursive call 56: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:21,468 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:21,469 INFO L550 ElimStorePlain]: Start of recursive call 57: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:21,475 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:21,475 INFO L550 ElimStorePlain]: Start of recursive call 58: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:21,481 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:21,482 INFO L550 ElimStorePlain]: Start of recursive call 59: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:21,487 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:21,488 INFO L550 ElimStorePlain]: Start of recursive call 60: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:21,494 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:00:21,495 INFO L550 ElimStorePlain]: Start of recursive call 61: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:21,500 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:21,501 INFO L550 ElimStorePlain]: Start of recursive call 62: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:21,507 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:00:21,508 INFO L550 ElimStorePlain]: Start of recursive call 63: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:21,513 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:21,513 INFO L550 ElimStorePlain]: Start of recursive call 64: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:21,518 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:21,519 INFO L550 ElimStorePlain]: Start of recursive call 65: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:21,524 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:21,524 INFO L550 ElimStorePlain]: Start of recursive call 66: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:21,530 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:21,530 INFO L550 ElimStorePlain]: Start of recursive call 67: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:21,535 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:21,536 INFO L550 ElimStorePlain]: Start of recursive call 68: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:21,541 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:21,542 INFO L550 ElimStorePlain]: Start of recursive call 69: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:21,548 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:21,549 INFO L550 ElimStorePlain]: Start of recursive call 70: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:21,555 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:21,555 INFO L550 ElimStorePlain]: Start of recursive call 71: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:21,560 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:21,561 INFO L550 ElimStorePlain]: Start of recursive call 72: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:21,565 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:21,566 INFO L550 ElimStorePlain]: Start of recursive call 73: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:21,570 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:21,571 INFO L550 ElimStorePlain]: Start of recursive call 74: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:21,575 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:21,576 INFO L550 ElimStorePlain]: Start of recursive call 75: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:21,581 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:21,581 INFO L550 ElimStorePlain]: Start of recursive call 76: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:21,585 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:21,586 INFO L550 ElimStorePlain]: Start of recursive call 77: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:21,591 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:21,591 INFO L550 ElimStorePlain]: Start of recursive call 78: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:21,595 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:21,596 INFO L550 ElimStorePlain]: Start of recursive call 79: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:21,600 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:21,601 INFO L550 ElimStorePlain]: Start of recursive call 80: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:21,605 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:21,606 INFO L550 ElimStorePlain]: Start of recursive call 81: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:21,614 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:21,615 INFO L550 ElimStorePlain]: Start of recursive call 82: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:21,619 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:21,620 INFO L550 ElimStorePlain]: Start of recursive call 83: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:21,624 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:21,624 INFO L550 ElimStorePlain]: Start of recursive call 84: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:21,628 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:21,629 INFO L550 ElimStorePlain]: Start of recursive call 85: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:21,632 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:21,633 INFO L550 ElimStorePlain]: Start of recursive call 86: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:21,865 WARN L205 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2021-06-05 05:00:21,865 INFO L628 ElimStorePlain]: treesize reduction 261, result has 52.8 percent of original size [2021-06-05 05:00:21,870 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:00:21,871 INFO L550 ElimStorePlain]: Start of recursive call 87: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:21,875 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:00:21,876 INFO L550 ElimStorePlain]: Start of recursive call 88: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:21,880 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:21,880 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:00:21,881 INFO L550 ElimStorePlain]: Start of recursive call 89: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:21,888 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:00:21,889 INFO L550 ElimStorePlain]: Start of recursive call 90: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:21,892 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:21,893 INFO L550 ElimStorePlain]: Start of recursive call 91: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:21,896 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:21,897 INFO L550 ElimStorePlain]: Start of recursive call 92: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:21,900 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:21,900 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:00:21,901 INFO L550 ElimStorePlain]: Start of recursive call 93: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:21,904 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:00:21,905 INFO L550 ElimStorePlain]: Start of recursive call 94: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:22,001 INFO L628 ElimStorePlain]: treesize reduction 47, result has 72.8 percent of original size [2021-06-05 05:00:22,003 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 6 xjuncts. [2021-06-05 05:00:22,003 INFO L247 ElimStorePlain]: Needed 94 recursive calls to eliminate 2 variables, input treesize:4000, output treesize:126 [2021-06-05 05:00:22,151 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:00:22,151 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1891163276] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:00:22,151 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:00:22,152 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 17 [2021-06-05 05:00:22,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447778067] [2021-06-05 05:00:22,152 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 05:00:22,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:00:22,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 05:00:22,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2021-06-05 05:00:22,152 INFO L87 Difference]: Start difference. First operand 698 states and 2155 transitions. Second operand has 17 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:22,631 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 51 [2021-06-05 05:00:22,787 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 58 [2021-06-05 05:00:22,930 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2021-06-05 05:00:23,155 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2021-06-05 05:00:23,533 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2021-06-05 05:00:23,734 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 63 [2021-06-05 05:00:23,857 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 44 [2021-06-05 05:00:24,000 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2021-06-05 05:00:24,177 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 62 [2021-06-05 05:00:24,325 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 51 [2021-06-05 05:00:24,609 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 59 [2021-06-05 05:00:24,776 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 58 [2021-06-05 05:00:25,108 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2021-06-05 05:00:25,343 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 67 [2021-06-05 05:00:25,480 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2021-06-05 05:00:25,816 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 63 [2021-06-05 05:00:26,008 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 62 [2021-06-05 05:00:26,227 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2021-06-05 05:00:26,369 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2021-06-05 05:00:26,634 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 46 [2021-06-05 05:00:26,944 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 65 [2021-06-05 05:00:27,135 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 65 [2021-06-05 05:00:27,327 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 61 [2021-06-05 05:00:27,508 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 61 [2021-06-05 05:00:27,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:00:27,549 INFO L93 Difference]: Finished difference Result 1481 states and 4465 transitions. [2021-06-05 05:00:27,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-05 05:00:27,549 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 05:00:27,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:00:27,551 INFO L225 Difference]: With dead ends: 1481 [2021-06-05 05:00:27,551 INFO L226 Difference]: Without dead ends: 834 [2021-06-05 05:00:27,551 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 709 ImplicationChecksByTransitivity, 5230.9ms TimeCoverageRelationStatistics Valid=562, Invalid=2300, Unknown=0, NotChecked=0, Total=2862 [2021-06-05 05:00:27,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2021-06-05 05:00:27,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 562. [2021-06-05 05:00:27,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 561 states have (on average 2.971479500891266) internal successors, (1667), 561 states have internal predecessors, (1667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:27,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 1667 transitions. [2021-06-05 05:00:27,557 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 1667 transitions. Word has length 20 [2021-06-05 05:00:27,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:00:27,557 INFO L482 AbstractCegarLoop]: Abstraction has 562 states and 1667 transitions. [2021-06-05 05:00:27,558 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:27,558 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 1667 transitions. [2021-06-05 05:00:27,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 05:00:27,558 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:00:27,558 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:00:27,758 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2400 [2021-06-05 05:00:27,759 INFO L430 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:00:27,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:00:27,759 INFO L82 PathProgramCache]: Analyzing trace with hash 1915516239, now seen corresponding path program 17 times [2021-06-05 05:00:27,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:00:27,759 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772759506] [2021-06-05 05:00:27,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:00:27,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:00:27,883 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:00:27,884 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:00:27,884 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772759506] [2021-06-05 05:00:27,884 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772759506] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:00:27,884 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [902596305] [2021-06-05 05:00:27,884 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:00:27,916 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 05:00:27,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:00:27,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 18 conjunts are in the unsatisfiable core [2021-06-05 05:00:27,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:00:28,035 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:28,036 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:28,039 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:28,040 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:28,042 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:00:28,043 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:28,046 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:28,046 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:28,049 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:00:28,050 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:28,053 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:00:28,054 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:28,057 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:00:28,057 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:28,060 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:28,061 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:28,063 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:28,064 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:28,067 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:28,067 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:28,070 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:28,071 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:28,073 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:28,074 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:28,076 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:28,077 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:28,079 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:28,080 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:28,082 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:28,083 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:28,085 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:28,086 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:28,088 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:00:28,089 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:28,091 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:28,092 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:28,094 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:28,095 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:28,097 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:00:28,098 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:28,172 INFO L628 ElimStorePlain]: treesize reduction 34, result has 74.8 percent of original size [2021-06-05 05:00:28,173 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 05:00:28,173 INFO L247 ElimStorePlain]: Needed 21 recursive calls to eliminate 1 variables, input treesize:674, output treesize:101 [2021-06-05 05:00:28,462 INFO L446 ElimStorePlain]: Different costs {0=[char_at_5], 1=[char_at_1]} [2021-06-05 05:00:28,468 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:00:28,468 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:28,473 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:28,473 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:28,477 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:28,478 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:28,483 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:28,484 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:28,488 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:28,488 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:28,494 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:00:28,494 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:28,499 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:00:28,500 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:28,505 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:28,506 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:28,511 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:28,511 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:28,516 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:28,516 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:28,520 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:28,521 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:28,525 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:28,526 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:28,531 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:00:28,531 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:28,536 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:28,536 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:28,541 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:00:28,542 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:28,547 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:28,547 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:28,552 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:28,553 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:28,557 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:28,557 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:28,562 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:28,562 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:28,568 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:00:28,569 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:28,575 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:00:28,576 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:28,582 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:00:28,583 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:28,588 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:00:28,589 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:28,593 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:28,594 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:28,599 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:28,600 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:28,604 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:28,605 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:28,610 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:28,610 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:28,614 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:28,615 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:28,620 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:28,620 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:28,625 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:28,625 INFO L550 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:28,629 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:28,630 INFO L550 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:28,633 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:28,634 INFO L550 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:28,639 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:00:28,640 INFO L550 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:28,646 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:28,647 INFO L550 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:28,651 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:28,652 INFO L550 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:28,657 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:28,657 INFO L550 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:28,661 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:28,662 INFO L550 ElimStorePlain]: Start of recursive call 38: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:28,666 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:28,667 INFO L550 ElimStorePlain]: Start of recursive call 39: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:28,671 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:28,672 INFO L550 ElimStorePlain]: Start of recursive call 40: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:28,676 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:28,677 INFO L550 ElimStorePlain]: Start of recursive call 41: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:28,681 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:28,681 INFO L550 ElimStorePlain]: Start of recursive call 42: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:28,686 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:28,687 INFO L550 ElimStorePlain]: Start of recursive call 43: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:28,691 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:28,692 INFO L550 ElimStorePlain]: Start of recursive call 44: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:28,696 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:28,697 INFO L550 ElimStorePlain]: Start of recursive call 45: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:28,701 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:28,702 INFO L550 ElimStorePlain]: Start of recursive call 46: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:28,706 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:28,707 INFO L550 ElimStorePlain]: Start of recursive call 47: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:28,711 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:28,711 INFO L550 ElimStorePlain]: Start of recursive call 48: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:28,716 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:28,716 INFO L550 ElimStorePlain]: Start of recursive call 49: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:28,720 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:28,721 INFO L550 ElimStorePlain]: Start of recursive call 50: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:28,725 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:28,726 INFO L550 ElimStorePlain]: Start of recursive call 51: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:28,730 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:28,731 INFO L550 ElimStorePlain]: Start of recursive call 52: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:28,734 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:28,735 INFO L550 ElimStorePlain]: Start of recursive call 53: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:28,738 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:28,739 INFO L550 ElimStorePlain]: Start of recursive call 54: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:28,744 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:28,745 INFO L550 ElimStorePlain]: Start of recursive call 55: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:28,748 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:28,749 INFO L550 ElimStorePlain]: Start of recursive call 56: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:28,763 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:28,764 INFO L550 ElimStorePlain]: Start of recursive call 57: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:28,769 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:28,770 INFO L550 ElimStorePlain]: Start of recursive call 58: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:28,774 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:28,775 INFO L550 ElimStorePlain]: Start of recursive call 59: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:28,794 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:28,795 INFO L550 ElimStorePlain]: Start of recursive call 60: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:28,798 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:28,799 INFO L550 ElimStorePlain]: Start of recursive call 61: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:28,803 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:28,803 INFO L550 ElimStorePlain]: Start of recursive call 62: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:28,806 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:28,806 INFO L550 ElimStorePlain]: Start of recursive call 63: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:28,809 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:28,809 INFO L550 ElimStorePlain]: Start of recursive call 64: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:28,812 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:28,812 INFO L550 ElimStorePlain]: Start of recursive call 65: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:28,815 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:28,815 INFO L550 ElimStorePlain]: Start of recursive call 66: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:28,931 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 34 [2021-06-05 05:00:28,932 INFO L628 ElimStorePlain]: treesize reduction 151, result has 40.8 percent of original size [2021-06-05 05:00:28,934 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:00:28,935 INFO L550 ElimStorePlain]: Start of recursive call 67: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:28,937 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:00:28,938 INFO L550 ElimStorePlain]: Start of recursive call 68: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:28,940 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:00:28,941 INFO L550 ElimStorePlain]: Start of recursive call 69: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:28,943 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:28,943 INFO L550 ElimStorePlain]: Start of recursive call 70: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:28,962 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:00:28,962 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-06-05 05:00:28,963 INFO L247 ElimStorePlain]: Needed 70 recursive calls to eliminate 2 variables, input treesize:3073, output treesize:51 [2021-06-05 05:00:29,026 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:00:29,026 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [902596305] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:00:29,026 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:00:29,026 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-06-05 05:00:29,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855142608] [2021-06-05 05:00:29,026 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 05:00:29,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:00:29,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 05:00:29,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-06-05 05:00:29,027 INFO L87 Difference]: Start difference. First operand 562 states and 1667 transitions. Second operand has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:29,821 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2021-06-05 05:00:30,169 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 61 [2021-06-05 05:00:30,566 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 51 [2021-06-05 05:00:30,972 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 51 [2021-06-05 05:00:31,255 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 53 [2021-06-05 05:00:31,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:00:31,383 INFO L93 Difference]: Finished difference Result 865 states and 2353 transitions. [2021-06-05 05:00:31,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 05:00:31,383 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 05:00:31,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:00:31,384 INFO L225 Difference]: With dead ends: 865 [2021-06-05 05:00:31,384 INFO L226 Difference]: Without dead ends: 744 [2021-06-05 05:00:31,385 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 455 ImplicationChecksByTransitivity, 2316.8ms TimeCoverageRelationStatistics Valid=437, Invalid=1543, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 05:00:31,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2021-06-05 05:00:31,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 568. [2021-06-05 05:00:31,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 567 states have (on average 2.948853615520282) internal successors, (1672), 567 states have internal predecessors, (1672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:31,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 1672 transitions. [2021-06-05 05:00:31,393 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 1672 transitions. Word has length 20 [2021-06-05 05:00:31,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:00:31,393 INFO L482 AbstractCegarLoop]: Abstraction has 568 states and 1672 transitions. [2021-06-05 05:00:31,393 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:31,393 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 1672 transitions. [2021-06-05 05:00:31,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 05:00:31,393 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:00:31,393 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:00:31,594 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2542 [2021-06-05 05:00:31,594 INFO L430 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:00:31,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:00:31,594 INFO L82 PathProgramCache]: Analyzing trace with hash -640833135, now seen corresponding path program 18 times [2021-06-05 05:00:31,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:00:31,594 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062902102] [2021-06-05 05:00:31,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:00:31,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:00:31,771 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:00:31,772 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:00:31,772 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062902102] [2021-06-05 05:00:31,772 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062902102] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:00:31,772 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217815901] [2021-06-05 05:00:31,772 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:00:31,805 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-06-05 05:00:31,805 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:00:31,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 18 conjunts are in the unsatisfiable core [2021-06-05 05:00:31,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:00:31,872 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:00:31,873 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:31,876 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:00:31,877 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:31,880 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:00:31,881 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:31,884 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:31,884 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:31,887 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:31,888 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:31,890 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:31,891 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:31,893 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:31,894 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:31,897 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:31,897 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:31,900 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:31,900 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:31,903 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:31,903 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:31,906 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:31,906 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:31,909 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:31,910 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:31,912 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:31,913 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:31,915 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:31,915 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:31,918 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:31,918 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:31,921 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:00:31,922 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:31,924 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:31,925 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:31,927 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:31,928 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:31,930 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:31,931 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:32,000 INFO L628 ElimStorePlain]: treesize reduction 30, result has 74.8 percent of original size [2021-06-05 05:00:32,001 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-06-05 05:00:32,001 INFO L247 ElimStorePlain]: Needed 20 recursive calls to eliminate 1 variables, input treesize:695, output treesize:89 [2021-06-05 05:00:32,513 INFO L446 ElimStorePlain]: Different costs {0=[char_at_9], 1=[char_at_1]} [2021-06-05 05:00:32,520 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:00:32,521 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:32,528 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:00:32,529 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:32,535 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:32,536 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:32,542 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:32,543 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:32,550 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:32,550 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:32,557 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:32,558 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:32,564 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:32,564 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:32,571 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:32,572 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:32,578 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:32,579 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:32,585 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:32,586 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:32,593 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:32,594 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:32,600 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:32,600 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:32,606 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:32,606 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:32,612 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:32,613 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:32,618 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:32,618 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:32,624 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:32,624 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:32,630 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:32,631 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:32,637 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:00:32,638 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:32,645 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:32,645 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:32,651 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:32,652 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:32,658 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:32,659 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:32,665 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:32,665 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:32,671 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:32,671 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:32,678 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:32,678 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:32,684 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:32,685 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:32,690 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:32,691 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:32,697 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:32,697 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:32,703 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:32,703 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:32,709 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:00:32,711 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:32,718 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:00:32,719 INFO L550 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:32,726 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:32,726 INFO L550 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:32,732 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:32,732 INFO L550 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:32,738 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:32,739 INFO L550 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:32,744 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:32,745 INFO L550 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:32,750 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:32,750 INFO L550 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:32,756 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:32,756 INFO L550 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:32,761 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:32,762 INFO L550 ElimStorePlain]: Start of recursive call 38: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:32,767 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:32,768 INFO L550 ElimStorePlain]: Start of recursive call 39: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:32,774 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:32,774 INFO L550 ElimStorePlain]: Start of recursive call 40: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:32,780 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:32,780 INFO L550 ElimStorePlain]: Start of recursive call 41: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:32,785 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:32,786 INFO L550 ElimStorePlain]: Start of recursive call 42: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:32,792 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:32,793 INFO L550 ElimStorePlain]: Start of recursive call 43: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:32,797 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:32,798 INFO L550 ElimStorePlain]: Start of recursive call 44: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:32,803 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:32,804 INFO L550 ElimStorePlain]: Start of recursive call 45: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:32,809 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:32,810 INFO L550 ElimStorePlain]: Start of recursive call 46: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:32,815 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:32,815 INFO L550 ElimStorePlain]: Start of recursive call 47: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:32,820 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:32,821 INFO L550 ElimStorePlain]: Start of recursive call 48: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:32,826 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:32,827 INFO L550 ElimStorePlain]: Start of recursive call 49: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:32,833 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:32,833 INFO L550 ElimStorePlain]: Start of recursive call 50: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:32,839 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:32,839 INFO L550 ElimStorePlain]: Start of recursive call 51: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:32,846 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:32,847 INFO L550 ElimStorePlain]: Start of recursive call 52: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:32,856 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:32,857 INFO L550 ElimStorePlain]: Start of recursive call 53: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:32,864 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:32,865 INFO L550 ElimStorePlain]: Start of recursive call 54: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:32,872 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:32,873 INFO L550 ElimStorePlain]: Start of recursive call 55: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:32,879 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:32,880 INFO L550 ElimStorePlain]: Start of recursive call 56: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:32,887 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:32,888 INFO L550 ElimStorePlain]: Start of recursive call 57: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:32,893 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:32,893 INFO L550 ElimStorePlain]: Start of recursive call 58: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:32,898 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:32,898 INFO L550 ElimStorePlain]: Start of recursive call 59: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:32,904 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:00:32,905 INFO L550 ElimStorePlain]: Start of recursive call 60: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:32,910 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:32,910 INFO L550 ElimStorePlain]: Start of recursive call 61: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:32,915 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:32,915 INFO L550 ElimStorePlain]: Start of recursive call 62: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:32,920 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:32,921 INFO L550 ElimStorePlain]: Start of recursive call 63: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:32,926 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:32,926 INFO L550 ElimStorePlain]: Start of recursive call 64: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:32,931 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:32,932 INFO L550 ElimStorePlain]: Start of recursive call 65: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:32,936 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:32,937 INFO L550 ElimStorePlain]: Start of recursive call 66: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:32,943 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:32,944 INFO L550 ElimStorePlain]: Start of recursive call 67: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:32,948 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:32,949 INFO L550 ElimStorePlain]: Start of recursive call 68: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:32,954 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:32,954 INFO L550 ElimStorePlain]: Start of recursive call 69: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:32,959 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:32,960 INFO L550 ElimStorePlain]: Start of recursive call 70: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:32,964 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:32,964 INFO L550 ElimStorePlain]: Start of recursive call 71: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:32,968 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:32,969 INFO L550 ElimStorePlain]: Start of recursive call 72: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:32,974 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:32,975 INFO L550 ElimStorePlain]: Start of recursive call 73: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:32,980 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:32,980 INFO L550 ElimStorePlain]: Start of recursive call 74: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:32,984 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:32,985 INFO L550 ElimStorePlain]: Start of recursive call 75: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:32,989 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:32,989 INFO L550 ElimStorePlain]: Start of recursive call 76: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:32,993 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:32,994 INFO L550 ElimStorePlain]: Start of recursive call 77: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:32,998 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:32,998 INFO L550 ElimStorePlain]: Start of recursive call 78: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:33,003 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:33,003 INFO L550 ElimStorePlain]: Start of recursive call 79: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:33,007 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:33,008 INFO L550 ElimStorePlain]: Start of recursive call 80: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:33,012 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:33,012 INFO L550 ElimStorePlain]: Start of recursive call 81: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:33,016 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:00:33,017 INFO L550 ElimStorePlain]: Start of recursive call 82: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:33,022 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:33,022 INFO L550 ElimStorePlain]: Start of recursive call 83: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:33,026 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:33,027 INFO L550 ElimStorePlain]: Start of recursive call 84: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:33,031 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:33,031 INFO L550 ElimStorePlain]: Start of recursive call 85: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:33,035 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:33,036 INFO L550 ElimStorePlain]: Start of recursive call 86: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:33,039 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:33,040 INFO L550 ElimStorePlain]: Start of recursive call 87: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:33,043 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:33,044 INFO L550 ElimStorePlain]: Start of recursive call 88: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:33,048 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:33,048 INFO L550 ElimStorePlain]: Start of recursive call 89: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:33,052 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:33,053 INFO L550 ElimStorePlain]: Start of recursive call 90: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:33,056 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:33,057 INFO L550 ElimStorePlain]: Start of recursive call 91: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:33,060 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:00:33,061 INFO L550 ElimStorePlain]: Start of recursive call 92: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:33,065 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:33,066 INFO L550 ElimStorePlain]: Start of recursive call 93: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:33,069 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:33,070 INFO L550 ElimStorePlain]: Start of recursive call 94: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:33,073 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:33,073 INFO L550 ElimStorePlain]: Start of recursive call 95: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:33,244 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 39 [2021-06-05 05:00:33,245 INFO L628 ElimStorePlain]: treesize reduction 257, result has 42.4 percent of original size [2021-06-05 05:00:33,249 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:00:33,250 INFO L550 ElimStorePlain]: Start of recursive call 96: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:33,253 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:00:33,254 INFO L550 ElimStorePlain]: Start of recursive call 97: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:33,257 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:00:33,258 INFO L550 ElimStorePlain]: Start of recursive call 98: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:33,261 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:00:33,262 INFO L550 ElimStorePlain]: Start of recursive call 99: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:33,265 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:00:33,266 INFO L550 ElimStorePlain]: Start of recursive call 100: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:33,268 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:33,269 INFO L550 ElimStorePlain]: Start of recursive call 101: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:33,356 INFO L628 ElimStorePlain]: treesize reduction 19, result has 82.4 percent of original size [2021-06-05 05:00:33,357 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 05:00:33,357 INFO L247 ElimStorePlain]: Needed 101 recursive calls to eliminate 2 variables, input treesize:4666, output treesize:89 [2021-06-05 05:00:33,476 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:00:33,476 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1217815901] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:00:33,476 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:00:33,476 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-06-05 05:00:33,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170722767] [2021-06-05 05:00:33,477 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 05:00:33,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:00:33,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 05:00:33,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-06-05 05:00:33,477 INFO L87 Difference]: Start difference. First operand 568 states and 1672 transitions. Second operand has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:34,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:00:34,815 INFO L93 Difference]: Finished difference Result 752 states and 2123 transitions. [2021-06-05 05:00:34,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 05:00:34,816 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 05:00:34,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:00:34,817 INFO L225 Difference]: With dead ends: 752 [2021-06-05 05:00:34,817 INFO L226 Difference]: Without dead ends: 640 [2021-06-05 05:00:34,817 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 1445.8ms TimeCoverageRelationStatistics Valid=213, Invalid=779, Unknown=0, NotChecked=0, Total=992 [2021-06-05 05:00:34,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2021-06-05 05:00:34,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 587. [2021-06-05 05:00:34,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 587 states, 586 states have (on average 2.95221843003413) internal successors, (1730), 586 states have internal predecessors, (1730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:34,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 1730 transitions. [2021-06-05 05:00:34,823 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 1730 transitions. Word has length 20 [2021-06-05 05:00:34,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:00:34,823 INFO L482 AbstractCegarLoop]: Abstraction has 587 states and 1730 transitions. [2021-06-05 05:00:34,823 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:34,823 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 1730 transitions. [2021-06-05 05:00:34,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 05:00:34,823 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:00:34,824 INFO L521 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:00:35,024 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2627 [2021-06-05 05:00:35,024 INFO L430 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:00:35,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:00:35,024 INFO L82 PathProgramCache]: Analyzing trace with hash -1076789129, now seen corresponding path program 12 times [2021-06-05 05:00:35,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:00:35,025 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642448962] [2021-06-05 05:00:35,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:00:35,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:00:35,111 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-06-05 05:00:35,111 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:00:35,111 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642448962] [2021-06-05 05:00:35,111 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642448962] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:00:35,111 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440981519] [2021-06-05 05:00:35,111 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:00:35,148 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-06-05 05:00:35,148 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:00:35,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 13 conjunts are in the unsatisfiable core [2021-06-05 05:00:35,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:00:35,277 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:00:35,277 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [440981519] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:00:35,277 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:00:35,277 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 15 [2021-06-05 05:00:35,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117397456] [2021-06-05 05:00:35,278 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 05:00:35,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:00:35,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 05:00:35,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2021-06-05 05:00:35,278 INFO L87 Difference]: Start difference. First operand 587 states and 1730 transitions. Second operand has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:37,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:00:37,155 INFO L93 Difference]: Finished difference Result 1310 states and 3774 transitions. [2021-06-05 05:00:37,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-05 05:00:37,155 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-06-05 05:00:37,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:00:37,157 INFO L225 Difference]: With dead ends: 1310 [2021-06-05 05:00:37,157 INFO L226 Difference]: Without dead ends: 1118 [2021-06-05 05:00:37,157 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 718 ImplicationChecksByTransitivity, 1436.0ms TimeCoverageRelationStatistics Valid=599, Invalid=2593, Unknown=0, NotChecked=0, Total=3192 [2021-06-05 05:00:37,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1118 states. [2021-06-05 05:00:37,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1118 to 588. [2021-06-05 05:00:37,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 587 states have (on average 2.9812606473594547) internal successors, (1750), 587 states have internal predecessors, (1750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:37,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 1750 transitions. [2021-06-05 05:00:37,165 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 1750 transitions. Word has length 21 [2021-06-05 05:00:37,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:00:37,165 INFO L482 AbstractCegarLoop]: Abstraction has 588 states and 1750 transitions. [2021-06-05 05:00:37,165 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:37,165 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 1750 transitions. [2021-06-05 05:00:37,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 05:00:37,166 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:00:37,166 INFO L521 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:00:37,366 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2714 [2021-06-05 05:00:37,367 INFO L430 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:00:37,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:00:37,367 INFO L82 PathProgramCache]: Analyzing trace with hash -1577466005, now seen corresponding path program 13 times [2021-06-05 05:00:37,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:00:37,367 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674011786] [2021-06-05 05:00:37,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:00:37,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:00:37,427 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:00:37,427 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:00:37,427 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674011786] [2021-06-05 05:00:37,427 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674011786] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:00:37,427 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138728122] [2021-06-05 05:00:37,428 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:00:37,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:00:37,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 13 conjunts are in the unsatisfiable core [2021-06-05 05:00:37,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:00:37,509 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:37,510 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:37,512 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:00:37,514 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:37,516 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:00:37,517 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:37,520 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:00:37,520 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:37,523 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:00:37,524 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:37,526 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:00:37,527 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:37,529 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:00:37,530 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:37,532 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:37,533 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:37,535 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:37,535 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:37,537 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:37,538 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:37,540 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:00:37,541 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:37,543 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:37,544 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:37,546 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:37,547 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:37,548 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:37,549 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:37,603 INFO L628 ElimStorePlain]: treesize reduction 23, result has 76.0 percent of original size [2021-06-05 05:00:37,604 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-06-05 05:00:37,604 INFO L247 ElimStorePlain]: Needed 15 recursive calls to eliminate 1 variables, input treesize:381, output treesize:73 [2021-06-05 05:00:37,651 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:37,652 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:37,670 INFO L628 ElimStorePlain]: treesize reduction 21, result has 58.0 percent of original size [2021-06-05 05:00:37,671 INFO L518 ElimStorePlain]: Eliminatee v_prenex_9 vanished before elimination [2021-06-05 05:00:37,671 INFO L518 ElimStorePlain]: Eliminatee index_of_0 vanished before elimination [2021-06-05 05:00:37,671 INFO L518 ElimStorePlain]: Eliminatee index_of_8 vanished before elimination [2021-06-05 05:00:37,671 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-05 05:00:37,672 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:71, output treesize:29 [2021-06-05 05:00:37,724 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:00:37,724 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2138728122] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:00:37,724 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:00:37,724 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-06-05 05:00:37,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444271877] [2021-06-05 05:00:37,724 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 05:00:37,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:00:37,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 05:00:37,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-06-05 05:00:37,725 INFO L87 Difference]: Start difference. First operand 588 states and 1750 transitions. Second operand has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:37,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:00:37,922 INFO L93 Difference]: Finished difference Result 678 states and 1996 transitions. [2021-06-05 05:00:37,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 05:00:37,923 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-06-05 05:00:37,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:00:37,923 INFO L225 Difference]: With dead ends: 678 [2021-06-05 05:00:37,923 INFO L226 Difference]: Without dead ends: 615 [2021-06-05 05:00:37,924 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 249.6ms TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-06-05 05:00:37,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2021-06-05 05:00:37,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 606. [2021-06-05 05:00:37,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 606 states, 605 states have (on average 2.9851239669421488) internal successors, (1806), 605 states have internal predecessors, (1806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:37,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 1806 transitions. [2021-06-05 05:00:37,929 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 1806 transitions. Word has length 21 [2021-06-05 05:00:37,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:00:37,929 INFO L482 AbstractCegarLoop]: Abstraction has 606 states and 1806 transitions. [2021-06-05 05:00:37,929 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:37,929 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 1806 transitions. [2021-06-05 05:00:37,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 05:00:37,930 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:00:37,930 INFO L521 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:00:38,130 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2718,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:00:38,131 INFO L430 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:00:38,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:00:38,131 INFO L82 PathProgramCache]: Analyzing trace with hash 2001092945, now seen corresponding path program 14 times [2021-06-05 05:00:38,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:00:38,131 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317424707] [2021-06-05 05:00:38,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:00:38,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:00:38,182 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:00:38,182 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:00:38,182 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317424707] [2021-06-05 05:00:38,182 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317424707] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:00:38,183 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285685610] [2021-06-05 05:00:38,183 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:00:38,216 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 05:00:38,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:00:38,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 13 conjunts are in the unsatisfiable core [2021-06-05 05:00:38,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:00:38,256 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:00:38,257 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:38,259 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:38,260 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:38,262 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:00:38,263 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:38,266 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:00:38,266 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:38,269 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:00:38,270 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:38,273 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:00:38,273 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:38,276 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:00:38,277 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:38,279 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:00:38,280 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:38,283 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:00:38,283 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:38,286 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:00:38,287 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:38,289 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:38,290 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:38,292 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:38,292 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:38,295 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:00:38,296 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:38,299 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:38,299 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:38,301 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:38,302 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:38,306 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:00:38,306 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:38,309 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:38,309 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:38,312 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:38,312 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:38,314 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:38,315 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:38,317 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:38,318 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:38,319 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:38,320 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:38,322 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:38,322 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:38,378 INFO L628 ElimStorePlain]: treesize reduction 44, result has 62.4 percent of original size [2021-06-05 05:00:38,379 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-06-05 05:00:38,379 INFO L247 ElimStorePlain]: Needed 23 recursive calls to eliminate 1 variables, input treesize:615, output treesize:73 [2021-06-05 05:00:38,492 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:00:38,492 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [285685610] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:00:38,492 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:00:38,492 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-06-05 05:00:38,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135121283] [2021-06-05 05:00:38,492 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 05:00:38,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:00:38,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 05:00:38,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-06-05 05:00:38,493 INFO L87 Difference]: Start difference. First operand 606 states and 1806 transitions. Second operand has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:38,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:00:38,695 INFO L93 Difference]: Finished difference Result 798 states and 2356 transitions. [2021-06-05 05:00:38,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 05:00:38,695 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-06-05 05:00:38,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:00:38,696 INFO L225 Difference]: With dead ends: 798 [2021-06-05 05:00:38,697 INFO L226 Difference]: Without dead ends: 745 [2021-06-05 05:00:38,697 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 250.6ms TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2021-06-05 05:00:38,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745 states. [2021-06-05 05:00:38,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745 to 630. [2021-06-05 05:00:38,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 630 states, 629 states have (on average 3.0047694753577106) internal successors, (1890), 629 states have internal predecessors, (1890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:38,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 1890 transitions. [2021-06-05 05:00:38,703 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 1890 transitions. Word has length 21 [2021-06-05 05:00:38,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:00:38,703 INFO L482 AbstractCegarLoop]: Abstraction has 630 states and 1890 transitions. [2021-06-05 05:00:38,703 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:38,703 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 1890 transitions. [2021-06-05 05:00:38,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 05:00:38,704 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:00:38,704 INFO L521 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:00:38,904 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2726,40 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:00:38,905 INFO L430 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:00:38,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:00:38,905 INFO L82 PathProgramCache]: Analyzing trace with hash -695204879, now seen corresponding path program 15 times [2021-06-05 05:00:38,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:00:38,905 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802216142] [2021-06-05 05:00:38,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:00:38,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:00:38,984 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:00:38,985 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:00:38,985 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802216142] [2021-06-05 05:00:38,985 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802216142] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:00:38,985 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1011833816] [2021-06-05 05:00:38,985 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:00:39,022 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 05:00:39,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:00:39,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 13 conjunts are in the unsatisfiable core [2021-06-05 05:00:39,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:00:39,063 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:00:39,065 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:39,067 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:39,068 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:39,071 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:00:39,072 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:39,074 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:39,075 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:39,078 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:00:39,079 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:39,082 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:00:39,083 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:39,086 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:00:39,087 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:39,090 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:00:39,091 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:39,095 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:39,096 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:39,098 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:39,099 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:39,103 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:00:39,104 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:39,108 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:39,108 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:39,112 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:39,112 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:39,116 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:39,116 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:39,120 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:39,120 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:39,124 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:00:39,125 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:39,129 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:39,129 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:39,133 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:39,134 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:39,137 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:39,138 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:39,141 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:39,141 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:39,143 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:39,144 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:39,146 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:00:39,147 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:39,150 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:39,150 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:39,207 INFO L628 ElimStorePlain]: treesize reduction 61, result has 54.5 percent of original size [2021-06-05 05:00:39,208 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-06-05 05:00:39,208 INFO L247 ElimStorePlain]: Needed 24 recursive calls to eliminate 1 variables, input treesize:628, output treesize:73 [2021-06-05 05:00:39,343 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:00:39,343 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1011833816] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:00:39,344 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:00:39,344 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 13 [2021-06-05 05:00:39,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391161533] [2021-06-05 05:00:39,344 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 05:00:39,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:00:39,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 05:00:39,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-06-05 05:00:39,344 INFO L87 Difference]: Start difference. First operand 630 states and 1890 transitions. Second operand has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:39,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:00:39,835 INFO L93 Difference]: Finished difference Result 895 states and 2609 transitions. [2021-06-05 05:00:39,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-05 05:00:39,835 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-06-05 05:00:39,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:00:39,836 INFO L225 Difference]: With dead ends: 895 [2021-06-05 05:00:39,836 INFO L226 Difference]: Without dead ends: 776 [2021-06-05 05:00:39,836 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 552.8ms TimeCoverageRelationStatistics Valid=112, Invalid=394, Unknown=0, NotChecked=0, Total=506 [2021-06-05 05:00:39,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 776 states. [2021-06-05 05:00:39,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 776 to 603. [2021-06-05 05:00:39,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 602 states have (on average 2.9916943521594686) internal successors, (1801), 602 states have internal predecessors, (1801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:39,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 1801 transitions. [2021-06-05 05:00:39,843 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 1801 transitions. Word has length 21 [2021-06-05 05:00:39,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:00:39,843 INFO L482 AbstractCegarLoop]: Abstraction has 603 states and 1801 transitions. [2021-06-05 05:00:39,843 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:39,843 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 1801 transitions. [2021-06-05 05:00:39,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 05:00:39,844 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:00:39,844 INFO L521 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:00:40,045 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2739,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:00:40,045 INFO L430 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:00:40,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:00:40,045 INFO L82 PathProgramCache]: Analyzing trace with hash 1249318769, now seen corresponding path program 16 times [2021-06-05 05:00:40,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:00:40,046 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147611648] [2021-06-05 05:00:40,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:00:40,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:00:40,120 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:00:40,120 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:00:40,120 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147611648] [2021-06-05 05:00:40,120 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147611648] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:00:40,120 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1713460367] [2021-06-05 05:00:40,121 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:00:40,160 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 05:00:40,160 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:00:40,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 13 conjunts are in the unsatisfiable core [2021-06-05 05:00:40,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:00:40,179 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:00:40,180 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:40,182 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:00:40,183 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:40,212 INFO L628 ElimStorePlain]: treesize reduction 32, result has 48.4 percent of original size [2021-06-05 05:00:40,212 INFO L518 ElimStorePlain]: Eliminatee char_at_5 vanished before elimination [2021-06-05 05:00:40,212 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-06-05 05:00:40,212 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:72, output treesize:30 [2021-06-05 05:00:40,443 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:00:40,443 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1713460367] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:00:40,443 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:00:40,443 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 13 [2021-06-05 05:00:40,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754890724] [2021-06-05 05:00:40,443 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 05:00:40,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:00:40,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 05:00:40,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-06-05 05:00:40,444 INFO L87 Difference]: Start difference. First operand 603 states and 1801 transitions. Second operand has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:40,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:00:40,972 INFO L93 Difference]: Finished difference Result 1014 states and 2945 transitions. [2021-06-05 05:00:40,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-05 05:00:40,972 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-06-05 05:00:40,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:00:40,973 INFO L225 Difference]: With dead ends: 1014 [2021-06-05 05:00:40,973 INFO L226 Difference]: Without dead ends: 918 [2021-06-05 05:00:40,973 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 531.9ms TimeCoverageRelationStatistics Valid=132, Invalid=570, Unknown=0, NotChecked=0, Total=702 [2021-06-05 05:00:40,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 918 states. [2021-06-05 05:00:40,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 918 to 641. [2021-06-05 05:00:40,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 641 states, 640 states have (on average 3.0296875) internal successors, (1939), 640 states have internal predecessors, (1939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:40,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 1939 transitions. [2021-06-05 05:00:40,980 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 1939 transitions. Word has length 21 [2021-06-05 05:00:40,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:00:40,980 INFO L482 AbstractCegarLoop]: Abstraction has 641 states and 1939 transitions. [2021-06-05 05:00:40,980 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:40,980 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 1939 transitions. [2021-06-05 05:00:40,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 05:00:40,981 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:00:40,981 INFO L521 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:00:41,182 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2750 [2021-06-05 05:00:41,182 INFO L430 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:00:41,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:00:41,182 INFO L82 PathProgramCache]: Analyzing trace with hash -1446979055, now seen corresponding path program 17 times [2021-06-05 05:00:41,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:00:41,182 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458534161] [2021-06-05 05:00:41,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:00:41,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:00:41,242 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:00:41,242 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:00:41,242 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458534161] [2021-06-05 05:00:41,242 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458534161] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:00:41,242 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168805639] [2021-06-05 05:00:41,242 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:00:41,276 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 05:00:41,276 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:00:41,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 13 conjunts are in the unsatisfiable core [2021-06-05 05:00:41,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:00:41,373 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:00:41,373 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1168805639] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:00:41,373 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:00:41,374 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 05:00:41,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097184789] [2021-06-05 05:00:41,374 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 05:00:41,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:00:41,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 05:00:41,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-06-05 05:00:41,374 INFO L87 Difference]: Start difference. First operand 641 states and 1939 transitions. Second operand has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:41,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:00:41,518 INFO L93 Difference]: Finished difference Result 849 states and 2503 transitions. [2021-06-05 05:00:41,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 05:00:41,519 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-06-05 05:00:41,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:00:41,520 INFO L225 Difference]: With dead ends: 849 [2021-06-05 05:00:41,520 INFO L226 Difference]: Without dead ends: 806 [2021-06-05 05:00:41,520 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 174.3ms TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2021-06-05 05:00:41,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2021-06-05 05:00:41,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 632. [2021-06-05 05:00:41,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 632 states, 631 states have (on average 3.0190174326465926) internal successors, (1905), 631 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:41,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 632 states to 632 states and 1905 transitions. [2021-06-05 05:00:41,526 INFO L78 Accepts]: Start accepts. Automaton has 632 states and 1905 transitions. Word has length 21 [2021-06-05 05:00:41,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:00:41,526 INFO L482 AbstractCegarLoop]: Abstraction has 632 states and 1905 transitions. [2021-06-05 05:00:41,526 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:41,526 INFO L276 IsEmpty]: Start isEmpty. Operand 632 states and 1905 transitions. [2021-06-05 05:00:41,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 05:00:41,527 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:00:41,527 INFO L521 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:00:41,728 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2804,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:00:41,729 INFO L430 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:00:41,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:00:41,729 INFO L82 PathProgramCache]: Analyzing trace with hash 272596531, now seen corresponding path program 18 times [2021-06-05 05:00:41,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:00:41,729 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626575592] [2021-06-05 05:00:41,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:00:41,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:00:41,775 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:00:41,775 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:00:41,775 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626575592] [2021-06-05 05:00:41,775 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626575592] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:00:41,776 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1056434478] [2021-06-05 05:00:41,776 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:00:41,808 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-06-05 05:00:41,808 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:00:41,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 13 conjunts are in the unsatisfiable core [2021-06-05 05:00:41,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:00:41,900 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:00:41,900 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1056434478] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:00:41,900 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:00:41,900 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-06-05 05:00:41,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740834212] [2021-06-05 05:00:41,900 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 05:00:41,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:00:41,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 05:00:41,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-06-05 05:00:41,901 INFO L87 Difference]: Start difference. First operand 632 states and 1905 transitions. Second operand has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:42,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:00:42,007 INFO L93 Difference]: Finished difference Result 755 states and 2240 transitions. [2021-06-05 05:00:42,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 05:00:42,008 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-06-05 05:00:42,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:00:42,008 INFO L225 Difference]: With dead ends: 755 [2021-06-05 05:00:42,008 INFO L226 Difference]: Without dead ends: 712 [2021-06-05 05:00:42,009 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 117.6ms TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-06-05 05:00:42,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2021-06-05 05:00:42,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 614. [2021-06-05 05:00:42,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 614 states, 613 states have (on average 3.00489396411093) internal successors, (1842), 613 states have internal predecessors, (1842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:42,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 1842 transitions. [2021-06-05 05:00:42,015 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 1842 transitions. Word has length 21 [2021-06-05 05:00:42,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:00:42,015 INFO L482 AbstractCegarLoop]: Abstraction has 614 states and 1842 transitions. [2021-06-05 05:00:42,015 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:42,015 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 1842 transitions. [2021-06-05 05:00:42,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 05:00:42,016 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:00:42,016 INFO L521 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:00:42,216 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2813,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:00:42,216 INFO L430 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:00:42,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:00:42,216 INFO L82 PathProgramCache]: Analyzing trace with hash -1848301385, now seen corresponding path program 19 times [2021-06-05 05:00:42,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:00:42,217 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144133229] [2021-06-05 05:00:42,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:00:42,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:00:42,273 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:00:42,273 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:00:42,273 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144133229] [2021-06-05 05:00:42,273 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144133229] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:00:42,273 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [70434424] [2021-06-05 05:00:42,273 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:00:42,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:00:42,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 13 conjunts are in the unsatisfiable core [2021-06-05 05:00:42,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:00:42,415 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:00:42,415 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [70434424] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:00:42,415 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:00:42,415 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-06-05 05:00:42,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493999510] [2021-06-05 05:00:42,415 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 05:00:42,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:00:42,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 05:00:42,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-06-05 05:00:42,416 INFO L87 Difference]: Start difference. First operand 614 states and 1842 transitions. Second operand has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:42,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:00:42,705 INFO L93 Difference]: Finished difference Result 861 states and 2520 transitions. [2021-06-05 05:00:42,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-05 05:00:42,705 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-06-05 05:00:42,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:00:42,706 INFO L225 Difference]: With dead ends: 861 [2021-06-05 05:00:42,706 INFO L226 Difference]: Without dead ends: 808 [2021-06-05 05:00:42,706 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 293.2ms TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2021-06-05 05:00:42,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2021-06-05 05:00:42,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 652. [2021-06-05 05:00:42,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 652 states, 651 states have (on average 3.0414746543778803) internal successors, (1980), 651 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:42,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 1980 transitions. [2021-06-05 05:00:42,714 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 1980 transitions. Word has length 21 [2021-06-05 05:00:42,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:00:42,714 INFO L482 AbstractCegarLoop]: Abstraction has 652 states and 1980 transitions. [2021-06-05 05:00:42,714 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:42,714 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 1980 transitions. [2021-06-05 05:00:42,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 05:00:42,715 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:00:42,715 INFO L521 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:00:42,915 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2819,45 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:00:42,916 INFO L430 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:00:42,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:00:42,916 INFO L82 PathProgramCache]: Analyzing trace with hash -249631913, now seen corresponding path program 20 times [2021-06-05 05:00:42,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:00:42,916 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620146734] [2021-06-05 05:00:42,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:00:42,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:00:42,970 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:00:42,971 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:00:42,971 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620146734] [2021-06-05 05:00:42,971 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620146734] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:00:42,971 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748670121] [2021-06-05 05:00:42,971 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:00:43,004 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 05:00:43,004 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:00:43,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 13 conjunts are in the unsatisfiable core [2021-06-05 05:00:43,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:00:43,099 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:00:43,099 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1748670121] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:00:43,099 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:00:43,099 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-06-05 05:00:43,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331384738] [2021-06-05 05:00:43,099 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 05:00:43,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:00:43,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 05:00:43,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-06-05 05:00:43,100 INFO L87 Difference]: Start difference. First operand 652 states and 1980 transitions. Second operand has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:43,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:00:43,280 INFO L93 Difference]: Finished difference Result 880 states and 2579 transitions. [2021-06-05 05:00:43,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 05:00:43,280 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-06-05 05:00:43,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:00:43,281 INFO L225 Difference]: With dead ends: 880 [2021-06-05 05:00:43,281 INFO L226 Difference]: Without dead ends: 837 [2021-06-05 05:00:43,282 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 192.9ms TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2021-06-05 05:00:43,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 837 states. [2021-06-05 05:00:43,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 837 to 643. [2021-06-05 05:00:43,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 642 states have (on average 3.0311526479750777) internal successors, (1946), 642 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:43,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 1946 transitions. [2021-06-05 05:00:43,289 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 1946 transitions. Word has length 21 [2021-06-05 05:00:43,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:00:43,289 INFO L482 AbstractCegarLoop]: Abstraction has 643 states and 1946 transitions. [2021-06-05 05:00:43,289 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:43,289 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 1946 transitions. [2021-06-05 05:00:43,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 05:00:43,290 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:00:43,290 INFO L521 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:00:43,497 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2829,46 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:00:43,497 INFO L430 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:00:43,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:00:43,497 INFO L82 PathProgramCache]: Analyzing trace with hash 1469943673, now seen corresponding path program 21 times [2021-06-05 05:00:43,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:00:43,497 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428297578] [2021-06-05 05:00:43,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:00:43,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:00:43,554 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:00:43,555 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:00:43,555 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428297578] [2021-06-05 05:00:43,555 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428297578] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:00:43,555 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662818904] [2021-06-05 05:00:43,555 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:00:43,588 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-06-05 05:00:43,588 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:00:43,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 13 conjunts are in the unsatisfiable core [2021-06-05 05:00:43,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:00:43,680 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:00:43,680 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662818904] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:00:43,680 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:00:43,680 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-06-05 05:00:43,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737029655] [2021-06-05 05:00:43,680 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 05:00:43,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:00:43,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 05:00:43,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-06-05 05:00:43,681 INFO L87 Difference]: Start difference. First operand 643 states and 1946 transitions. Second operand has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:43,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:00:43,836 INFO L93 Difference]: Finished difference Result 822 states and 2428 transitions. [2021-06-05 05:00:43,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 05:00:43,836 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-06-05 05:00:43,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:00:43,837 INFO L225 Difference]: With dead ends: 822 [2021-06-05 05:00:43,837 INFO L226 Difference]: Without dead ends: 779 [2021-06-05 05:00:43,838 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 148.3ms TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-06-05 05:00:43,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2021-06-05 05:00:43,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 634. [2021-06-05 05:00:43,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 634 states, 633 states have (on average 3.0205371248025275) internal successors, (1912), 633 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:43,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 1912 transitions. [2021-06-05 05:00:43,848 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 1912 transitions. Word has length 21 [2021-06-05 05:00:43,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:00:43,848 INFO L482 AbstractCegarLoop]: Abstraction has 634 states and 1912 transitions. [2021-06-05 05:00:43,848 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:43,848 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 1912 transitions. [2021-06-05 05:00:43,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 05:00:43,849 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:00:43,849 INFO L521 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:00:44,072 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2837 [2021-06-05 05:00:44,072 INFO L430 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:00:44,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:00:44,073 INFO L82 PathProgramCache]: Analyzing trace with hash 98753771, now seen corresponding path program 22 times [2021-06-05 05:00:44,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:00:44,073 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625311665] [2021-06-05 05:00:44,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:00:44,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:00:44,125 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:00:44,125 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:00:44,125 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625311665] [2021-06-05 05:00:44,125 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625311665] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:00:44,125 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342548289] [2021-06-05 05:00:44,126 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:00:44,167 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 05:00:44,168 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:00:44,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 13 conjunts are in the unsatisfiable core [2021-06-05 05:00:44,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:00:44,255 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:00:44,256 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1342548289] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:00:44,256 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:00:44,256 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-05 05:00:44,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139255907] [2021-06-05 05:00:44,256 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 05:00:44,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:00:44,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 05:00:44,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-06-05 05:00:44,256 INFO L87 Difference]: Start difference. First operand 634 states and 1912 transitions. Second operand has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:44,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:00:44,409 INFO L93 Difference]: Finished difference Result 862 states and 2527 transitions. [2021-06-05 05:00:44,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-05 05:00:44,409 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-06-05 05:00:44,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:00:44,410 INFO L225 Difference]: With dead ends: 862 [2021-06-05 05:00:44,410 INFO L226 Difference]: Without dead ends: 819 [2021-06-05 05:00:44,410 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 155.8ms TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2021-06-05 05:00:44,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2021-06-05 05:00:44,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 581. [2021-06-05 05:00:44,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 580 states have (on average 3.010344827586207) internal successors, (1746), 580 states have internal predecessors, (1746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:44,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 1746 transitions. [2021-06-05 05:00:44,417 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 1746 transitions. Word has length 21 [2021-06-05 05:00:44,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:00:44,417 INFO L482 AbstractCegarLoop]: Abstraction has 581 states and 1746 transitions. [2021-06-05 05:00:44,417 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:44,417 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 1746 transitions. [2021-06-05 05:00:44,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 05:00:44,417 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:00:44,417 INFO L521 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:00:44,618 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2841,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:00:44,618 INFO L430 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:00:44,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:00:44,618 INFO L82 PathProgramCache]: Analyzing trace with hash -676988597, now seen corresponding path program 23 times [2021-06-05 05:00:44,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:00:44,618 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718015906] [2021-06-05 05:00:44,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:00:44,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:00:44,675 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:00:44,675 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:00:44,675 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718015906] [2021-06-05 05:00:44,675 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718015906] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:00:44,675 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [188994214] [2021-06-05 05:00:44,675 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:00:44,720 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 05:00:44,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:00:44,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 13 conjunts are in the unsatisfiable core [2021-06-05 05:00:44,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:00:44,909 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:00:44,910 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [188994214] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:00:44,910 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:00:44,910 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-06-05 05:00:44,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305094762] [2021-06-05 05:00:44,910 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 05:00:44,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:00:44,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 05:00:44,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-06-05 05:00:44,910 INFO L87 Difference]: Start difference. First operand 581 states and 1746 transitions. Second operand has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 14 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:45,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:00:45,107 INFO L93 Difference]: Finished difference Result 672 states and 1987 transitions. [2021-06-05 05:00:45,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 05:00:45,107 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 14 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-06-05 05:00:45,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:00:45,108 INFO L225 Difference]: With dead ends: 672 [2021-06-05 05:00:45,108 INFO L226 Difference]: Without dead ends: 609 [2021-06-05 05:00:45,108 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 270.6ms TimeCoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2021-06-05 05:00:45,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2021-06-05 05:00:45,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 585. [2021-06-05 05:00:45,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 584 states have (on average 3.0017123287671232) internal successors, (1753), 584 states have internal predecessors, (1753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:45,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 1753 transitions. [2021-06-05 05:00:45,114 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 1753 transitions. Word has length 21 [2021-06-05 05:00:45,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:00:45,114 INFO L482 AbstractCegarLoop]: Abstraction has 585 states and 1753 transitions. [2021-06-05 05:00:45,114 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 14 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:45,114 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 1753 transitions. [2021-06-05 05:00:45,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 05:00:45,115 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:00:45,115 INFO L521 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:00:45,315 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2849,49 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:00:45,315 INFO L430 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:00:45,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:00:45,315 INFO L82 PathProgramCache]: Analyzing trace with hash -1393396943, now seen corresponding path program 24 times [2021-06-05 05:00:45,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:00:45,316 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551166199] [2021-06-05 05:00:45,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:00:45,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:00:45,377 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:00:45,377 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:00:45,377 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551166199] [2021-06-05 05:00:45,377 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551166199] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:00:45,377 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104009516] [2021-06-05 05:00:45,377 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:00:45,430 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-06-05 05:00:45,430 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:00:45,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 13 conjunts are in the unsatisfiable core [2021-06-05 05:00:45,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:00:45,606 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:00:45,606 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2104009516] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:00:45,606 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:00:45,606 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-06-05 05:00:45,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884948388] [2021-06-05 05:00:45,607 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 05:00:45,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:00:45,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 05:00:45,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-06-05 05:00:45,607 INFO L87 Difference]: Start difference. First operand 585 states and 1753 transitions. Second operand has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:45,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:00:45,935 INFO L93 Difference]: Finished difference Result 756 states and 2235 transitions. [2021-06-05 05:00:45,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 05:00:45,935 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-06-05 05:00:45,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:00:45,936 INFO L225 Difference]: With dead ends: 756 [2021-06-05 05:00:45,936 INFO L226 Difference]: Without dead ends: 703 [2021-06-05 05:00:45,936 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 382.5ms TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2021-06-05 05:00:45,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2021-06-05 05:00:45,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 609. [2021-06-05 05:00:45,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 609 states, 608 states have (on average 3.0213815789473686) internal successors, (1837), 608 states have internal predecessors, (1837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:45,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 1837 transitions. [2021-06-05 05:00:45,945 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 1837 transitions. Word has length 21 [2021-06-05 05:00:45,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:00:45,945 INFO L482 AbstractCegarLoop]: Abstraction has 609 states and 1837 transitions. [2021-06-05 05:00:45,945 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:45,945 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 1837 transitions. [2021-06-05 05:00:45,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 05:00:45,946 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:00:45,946 INFO L521 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:00:46,146 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2858,50 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:00:46,146 INFO L430 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:00:46,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:00:46,146 INFO L82 PathProgramCache]: Analyzing trace with hash 205272529, now seen corresponding path program 25 times [2021-06-05 05:00:46,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:00:46,147 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436280425] [2021-06-05 05:00:46,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:00:46,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:00:46,204 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:00:46,204 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:00:46,204 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436280425] [2021-06-05 05:00:46,205 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436280425] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:00:46,205 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1635900680] [2021-06-05 05:00:46,205 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:00:46,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:00:46,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 13 conjunts are in the unsatisfiable core [2021-06-05 05:00:46,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:00:46,284 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:00:46,285 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:46,287 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:46,288 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:46,291 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:00:46,292 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:46,295 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:00:46,295 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:46,298 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:00:46,299 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:46,302 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:00:46,303 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:46,306 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:00:46,307 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:46,310 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:46,310 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:46,313 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:46,313 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:46,316 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:46,316 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:46,319 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:46,319 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:46,322 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:46,322 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:46,325 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:46,326 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:46,328 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:00:46,329 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:46,332 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:46,332 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:46,335 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:46,335 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:46,338 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:46,338 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:46,341 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:46,341 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:46,344 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:46,344 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:46,346 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:46,347 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:46,349 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:46,350 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:46,352 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:46,353 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:46,355 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:00:46,356 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:46,359 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:46,359 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:46,362 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:00:46,362 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:46,365 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:46,365 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:46,368 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:00:46,369 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:46,371 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:46,372 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:46,374 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:46,374 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:46,376 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:46,377 INFO L550 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:46,379 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:46,379 INFO L550 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:46,436 INFO L628 ElimStorePlain]: treesize reduction 65, result has 52.9 percent of original size [2021-06-05 05:00:46,437 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-06-05 05:00:46,437 INFO L247 ElimStorePlain]: Needed 32 recursive calls to eliminate 1 variables, input treesize:903, output treesize:73 [2021-06-05 05:00:46,547 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:00:46,548 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1635900680] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:00:46,548 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:00:46,548 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-06-05 05:00:46,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283971313] [2021-06-05 05:00:46,548 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 05:00:46,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:00:46,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 05:00:46,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-06-05 05:00:46,548 INFO L87 Difference]: Start difference. First operand 609 states and 1837 transitions. Second operand has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:46,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:00:46,750 INFO L93 Difference]: Finished difference Result 701 states and 2085 transitions. [2021-06-05 05:00:46,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 05:00:46,750 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-06-05 05:00:46,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:00:46,751 INFO L225 Difference]: With dead ends: 701 [2021-06-05 05:00:46,751 INFO L226 Difference]: Without dead ends: 658 [2021-06-05 05:00:46,751 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 264.9ms TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2021-06-05 05:00:46,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2021-06-05 05:00:46,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 576. [2021-06-05 05:00:46,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 575 states have (on average 3.0) internal successors, (1725), 575 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:46,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 1725 transitions. [2021-06-05 05:00:46,757 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 1725 transitions. Word has length 21 [2021-06-05 05:00:46,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:00:46,757 INFO L482 AbstractCegarLoop]: Abstraction has 576 states and 1725 transitions. [2021-06-05 05:00:46,757 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:46,757 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 1725 transitions. [2021-06-05 05:00:46,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 05:00:46,758 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:00:46,758 INFO L521 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:00:46,958 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2869,51 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:00:46,959 INFO L430 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:00:46,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:00:46,959 INFO L82 PathProgramCache]: Analyzing trace with hash -2145171119, now seen corresponding path program 26 times [2021-06-05 05:00:46,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:00:46,959 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144589340] [2021-06-05 05:00:46,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:00:46,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:00:47,013 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:00:47,013 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:00:47,013 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144589340] [2021-06-05 05:00:47,013 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144589340] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:00:47,013 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092728811] [2021-06-05 05:00:47,013 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:00:47,046 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 05:00:47,046 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:00:47,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 13 conjunts are in the unsatisfiable core [2021-06-05 05:00:47,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:00:47,066 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:00:47,067 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:47,069 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:00:47,069 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:47,099 INFO L628 ElimStorePlain]: treesize reduction 32, result has 48.4 percent of original size [2021-06-05 05:00:47,099 INFO L518 ElimStorePlain]: Eliminatee char_at_5 vanished before elimination [2021-06-05 05:00:47,099 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-06-05 05:00:47,099 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:72, output treesize:30 [2021-06-05 05:00:47,176 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:00:47,177 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1092728811] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:00:47,177 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:00:47,177 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-05 05:00:47,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982159037] [2021-06-05 05:00:47,177 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 05:00:47,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:00:47,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 05:00:47,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-06-05 05:00:47,177 INFO L87 Difference]: Start difference. First operand 576 states and 1725 transitions. Second operand has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:47,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:00:47,335 INFO L93 Difference]: Finished difference Result 758 states and 2221 transitions. [2021-06-05 05:00:47,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 05:00:47,336 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-06-05 05:00:47,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:00:47,337 INFO L225 Difference]: With dead ends: 758 [2021-06-05 05:00:47,337 INFO L226 Difference]: Without dead ends: 705 [2021-06-05 05:00:47,337 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 159.2ms TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2021-06-05 05:00:47,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2021-06-05 05:00:47,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 600. [2021-06-05 05:00:47,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 599 states have (on average 3.008347245409015) internal successors, (1802), 599 states have internal predecessors, (1802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:47,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 1802 transitions. [2021-06-05 05:00:47,350 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 1802 transitions. Word has length 21 [2021-06-05 05:00:47,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:00:47,350 INFO L482 AbstractCegarLoop]: Abstraction has 600 states and 1802 transitions. [2021-06-05 05:00:47,350 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:47,351 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 1802 transitions. [2021-06-05 05:00:47,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 05:00:47,351 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:00:47,351 INFO L521 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:00:47,556 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2879 [2021-06-05 05:00:47,557 INFO L430 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:00:47,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:00:47,557 INFO L82 PathProgramCache]: Analyzing trace with hash -546501647, now seen corresponding path program 27 times [2021-06-05 05:00:47,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:00:47,557 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363491050] [2021-06-05 05:00:47,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:00:47,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:00:47,609 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:00:47,609 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:00:47,609 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363491050] [2021-06-05 05:00:47,610 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363491050] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:00:47,610 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035757046] [2021-06-05 05:00:47,610 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:00:47,650 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 05:00:47,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:00:47,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-05 05:00:47,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:00:48,112 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:00:48,112 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2035757046] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:00:48,112 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:00:48,112 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11] total 17 [2021-06-05 05:00:48,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605531974] [2021-06-05 05:00:48,113 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 05:00:48,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:00:48,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 05:00:48,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2021-06-05 05:00:48,113 INFO L87 Difference]: Start difference. First operand 600 states and 1802 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 17 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:48,487 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 36 [2021-06-05 05:00:48,993 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 42 [2021-06-05 05:00:49,126 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 42 [2021-06-05 05:00:49,459 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 41 [2021-06-05 05:00:49,682 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 40 [2021-06-05 05:00:49,799 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 40 [2021-06-05 05:00:50,148 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 38 [2021-06-05 05:00:50,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:00:50,173 INFO L93 Difference]: Finished difference Result 1097 states and 3115 transitions. [2021-06-05 05:00:50,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-05 05:00:50,173 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 17 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-06-05 05:00:50,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:00:50,174 INFO L225 Difference]: With dead ends: 1097 [2021-06-05 05:00:50,174 INFO L226 Difference]: Without dead ends: 1008 [2021-06-05 05:00:50,174 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 396 ImplicationChecksByTransitivity, 2065.3ms TimeCoverageRelationStatistics Valid=292, Invalid=1348, Unknown=0, NotChecked=0, Total=1640 [2021-06-05 05:00:50,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2021-06-05 05:00:50,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 591. [2021-06-05 05:00:50,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 591 states, 590 states have (on average 2.9966101694915253) internal successors, (1768), 590 states have internal predecessors, (1768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:50,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 1768 transitions. [2021-06-05 05:00:50,181 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 1768 transitions. Word has length 21 [2021-06-05 05:00:50,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:00:50,181 INFO L482 AbstractCegarLoop]: Abstraction has 591 states and 1768 transitions. [2021-06-05 05:00:50,181 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 17 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:50,181 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 1768 transitions. [2021-06-05 05:00:50,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 05:00:50,182 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:00:50,182 INFO L521 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:00:50,383 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2891,53 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:00:50,383 INFO L430 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:00:50,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:00:50,384 INFO L82 PathProgramCache]: Analyzing trace with hash 1173073939, now seen corresponding path program 28 times [2021-06-05 05:00:50,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:00:50,384 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873559703] [2021-06-05 05:00:50,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:00:50,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:00:50,433 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:00:50,433 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:00:50,433 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873559703] [2021-06-05 05:00:50,433 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873559703] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:00:50,433 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663434305] [2021-06-05 05:00:50,433 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:00:50,473 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 05:00:50,473 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:00:50,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 13 conjunts are in the unsatisfiable core [2021-06-05 05:00:50,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:00:50,493 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:00:50,494 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:50,495 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:00:50,496 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:50,525 INFO L628 ElimStorePlain]: treesize reduction 32, result has 48.4 percent of original size [2021-06-05 05:00:50,525 INFO L518 ElimStorePlain]: Eliminatee char_at_5 vanished before elimination [2021-06-05 05:00:50,526 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-06-05 05:00:50,526 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:72, output treesize:30 [2021-06-05 05:00:50,579 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:00:50,580 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [663434305] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:00:50,580 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:00:50,580 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2021-06-05 05:00:50,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135174832] [2021-06-05 05:00:50,580 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 05:00:50,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:00:50,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 05:00:50,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-06-05 05:00:50,580 INFO L87 Difference]: Start difference. First operand 591 states and 1768 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:50,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:00:50,645 INFO L93 Difference]: Finished difference Result 696 states and 2049 transitions. [2021-06-05 05:00:50,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 05:00:50,645 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-06-05 05:00:50,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:00:50,646 INFO L225 Difference]: With dead ends: 696 [2021-06-05 05:00:50,646 INFO L226 Difference]: Without dead ends: 653 [2021-06-05 05:00:50,646 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 76.2ms TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-06-05 05:00:50,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2021-06-05 05:00:50,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 553. [2021-06-05 05:00:50,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 552 states have (on average 2.963768115942029) internal successors, (1636), 552 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:50,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 1636 transitions. [2021-06-05 05:00:50,651 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 1636 transitions. Word has length 21 [2021-06-05 05:00:50,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:00:50,651 INFO L482 AbstractCegarLoop]: Abstraction has 553 states and 1636 transitions. [2021-06-05 05:00:50,652 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:50,652 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 1636 transitions. [2021-06-05 05:00:50,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 05:00:50,652 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:00:50,652 INFO L521 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:00:50,853 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2904 [2021-06-05 05:00:50,853 INFO L430 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:00:50,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:00:50,853 INFO L82 PathProgramCache]: Analyzing trace with hash 1596328119, now seen corresponding path program 29 times [2021-06-05 05:00:50,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:00:50,853 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995336167] [2021-06-05 05:00:50,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:00:50,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:00:50,899 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:00:50,900 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:00:50,900 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995336167] [2021-06-05 05:00:50,900 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995336167] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:00:50,900 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067691759] [2021-06-05 05:00:50,900 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:00:50,934 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 05:00:50,934 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:00:50,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 13 conjunts are in the unsatisfiable core [2021-06-05 05:00:50,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:00:51,106 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:00:51,106 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1067691759] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:00:51,106 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:00:51,106 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-06-05 05:00:51,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904398418] [2021-06-05 05:00:51,106 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 05:00:51,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:00:51,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 05:00:51,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-06-05 05:00:51,107 INFO L87 Difference]: Start difference. First operand 553 states and 1636 transitions. Second operand has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 14 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:51,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:00:51,396 INFO L93 Difference]: Finished difference Result 811 states and 2347 transitions. [2021-06-05 05:00:51,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 05:00:51,396 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 14 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-06-05 05:00:51,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:00:51,397 INFO L225 Difference]: With dead ends: 811 [2021-06-05 05:00:51,397 INFO L226 Difference]: Without dead ends: 744 [2021-06-05 05:00:51,397 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 354.3ms TimeCoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2021-06-05 05:00:51,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2021-06-05 05:00:51,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 583. [2021-06-05 05:00:51,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 583 states, 582 states have (on average 2.9450171821305844) internal successors, (1714), 582 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:51,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 1714 transitions. [2021-06-05 05:00:51,403 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 1714 transitions. Word has length 21 [2021-06-05 05:00:51,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:00:51,403 INFO L482 AbstractCegarLoop]: Abstraction has 583 states and 1714 transitions. [2021-06-05 05:00:51,403 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 14 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:51,403 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 1714 transitions. [2021-06-05 05:00:51,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 05:00:51,404 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:00:51,404 INFO L521 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:00:51,604 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2911 [2021-06-05 05:00:51,604 INFO L430 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:00:51,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:00:51,605 INFO L82 PathProgramCache]: Analyzing trace with hash -114282799, now seen corresponding path program 30 times [2021-06-05 05:00:51,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:00:51,605 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651359308] [2021-06-05 05:00:51,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:00:51,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:00:51,675 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:00:51,675 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:00:51,675 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651359308] [2021-06-05 05:00:51,675 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651359308] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:00:51,676 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406020278] [2021-06-05 05:00:51,676 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:00:51,724 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-06-05 05:00:51,724 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:00:51,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 13 conjunts are in the unsatisfiable core [2021-06-05 05:00:51,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:00:51,883 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:00:51,883 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [406020278] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:00:51,883 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:00:51,883 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 05:00:51,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795340584] [2021-06-05 05:00:51,883 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 05:00:51,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:00:51,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 05:00:51,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-06-05 05:00:51,884 INFO L87 Difference]: Start difference. First operand 583 states and 1714 transitions. Second operand has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:52,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:00:52,252 INFO L93 Difference]: Finished difference Result 814 states and 2348 transitions. [2021-06-05 05:00:52,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 05:00:52,252 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-06-05 05:00:52,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:00:52,253 INFO L225 Difference]: With dead ends: 814 [2021-06-05 05:00:52,253 INFO L226 Difference]: Without dead ends: 759 [2021-06-05 05:00:52,254 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 443.4ms TimeCoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2021-06-05 05:00:52,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 759 states. [2021-06-05 05:00:52,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 759 to 592. [2021-06-05 05:00:52,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 592 states, 591 states have (on average 2.957698815566836) internal successors, (1748), 591 states have internal predecessors, (1748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:52,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 1748 transitions. [2021-06-05 05:00:52,262 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 1748 transitions. Word has length 21 [2021-06-05 05:00:52,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:00:52,262 INFO L482 AbstractCegarLoop]: Abstraction has 592 states and 1748 transitions. [2021-06-05 05:00:52,262 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:52,263 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 1748 transitions. [2021-06-05 05:00:52,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 05:00:52,263 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:00:52,263 INFO L521 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:00:52,486 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2919 [2021-06-05 05:00:52,486 INFO L430 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:00:52,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:00:52,486 INFO L82 PathProgramCache]: Analyzing trace with hash -830691145, now seen corresponding path program 31 times [2021-06-05 05:00:52,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:00:52,486 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219967188] [2021-06-05 05:00:52,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:00:52,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:00:52,554 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:00:52,555 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:00:52,555 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219967188] [2021-06-05 05:00:52,555 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219967188] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:00:52,555 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603246622] [2021-06-05 05:00:52,555 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:00:52,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:00:52,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 13 conjunts are in the unsatisfiable core [2021-06-05 05:00:52,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:00:52,754 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:00:52,755 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [603246622] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:00:52,755 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:00:52,755 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 05:00:52,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394827983] [2021-06-05 05:00:52,755 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 05:00:52,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:00:52,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 05:00:52,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-06-05 05:00:52,755 INFO L87 Difference]: Start difference. First operand 592 states and 1748 transitions. Second operand has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:53,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:00:53,355 INFO L93 Difference]: Finished difference Result 829 states and 2380 transitions. [2021-06-05 05:00:53,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 05:00:53,355 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-06-05 05:00:53,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:00:53,356 INFO L225 Difference]: With dead ends: 829 [2021-06-05 05:00:53,356 INFO L226 Difference]: Without dead ends: 780 [2021-06-05 05:00:53,356 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 650.4ms TimeCoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2021-06-05 05:00:53,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2021-06-05 05:00:53,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 605. [2021-06-05 05:00:53,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 605 states, 604 states have (on average 2.9850993377483444) internal successors, (1803), 604 states have internal predecessors, (1803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:53,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 1803 transitions. [2021-06-05 05:00:53,363 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 1803 transitions. Word has length 21 [2021-06-05 05:00:53,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:00:53,363 INFO L482 AbstractCegarLoop]: Abstraction has 605 states and 1803 transitions. [2021-06-05 05:00:53,363 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:53,363 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 1803 transitions. [2021-06-05 05:00:53,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 05:00:53,364 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:00:53,364 INFO L521 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:00:53,565 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2924,57 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:00:53,565 INFO L430 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:00:53,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:00:53,565 INFO L82 PathProgramCache]: Analyzing trace with hash 767978327, now seen corresponding path program 32 times [2021-06-05 05:00:53,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:00:53,565 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245090535] [2021-06-05 05:00:53,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:00:53,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:00:53,637 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:00:53,637 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:00:53,638 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245090535] [2021-06-05 05:00:53,638 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245090535] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:00:53,638 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032257417] [2021-06-05 05:00:53,638 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:00:53,673 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 05:00:53,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:00:53,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 13 conjunts are in the unsatisfiable core [2021-06-05 05:00:53,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:00:53,834 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:00:53,834 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1032257417] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:00:53,834 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:00:53,834 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 05:00:53,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352801777] [2021-06-05 05:00:53,834 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 05:00:53,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:00:53,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 05:00:53,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-06-05 05:00:53,835 INFO L87 Difference]: Start difference. First operand 605 states and 1803 transitions. Second operand has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:54,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:00:54,212 INFO L93 Difference]: Finished difference Result 725 states and 2118 transitions. [2021-06-05 05:00:54,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 05:00:54,212 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-06-05 05:00:54,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:00:54,213 INFO L225 Difference]: With dead ends: 725 [2021-06-05 05:00:54,213 INFO L226 Difference]: Without dead ends: 682 [2021-06-05 05:00:54,213 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 452.9ms TimeCoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2021-06-05 05:00:54,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2021-06-05 05:00:54,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 595. [2021-06-05 05:00:54,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 595 states, 594 states have (on average 2.9797979797979797) internal successors, (1770), 594 states have internal predecessors, (1770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:54,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 1770 transitions. [2021-06-05 05:00:54,219 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 1770 transitions. Word has length 21 [2021-06-05 05:00:54,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:00:54,219 INFO L482 AbstractCegarLoop]: Abstraction has 595 states and 1770 transitions. [2021-06-05 05:00:54,219 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:54,219 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 1770 transitions. [2021-06-05 05:00:54,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 05:00:54,220 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:00:54,220 INFO L521 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:00:54,422 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2931,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:00:54,422 INFO L430 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:00:54,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:00:54,422 INFO L82 PathProgramCache]: Analyzing trace with hash 18655387, now seen corresponding path program 33 times [2021-06-05 05:00:54,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:00:54,423 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149812557] [2021-06-05 05:00:54,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:00:54,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:00:54,486 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:00:54,486 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:00:54,486 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149812557] [2021-06-05 05:00:54,486 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149812557] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:00:54,486 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518912198] [2021-06-05 05:00:54,486 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:00:54,520 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 05:00:54,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:00:54,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 17 conjunts are in the unsatisfiable core [2021-06-05 05:00:54,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:00:54,558 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:00:54,559 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:54,561 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:00:54,562 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:54,564 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:00:54,565 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:54,568 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:00:54,568 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:54,571 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:00:54,571 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:54,607 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:00:54,607 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 05:00:54,608 INFO L247 ElimStorePlain]: Needed 6 recursive calls to eliminate 1 variables, input treesize:142, output treesize:107 [2021-06-05 05:00:54,950 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-06-05 05:00:54,951 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:54,954 INFO L628 ElimStorePlain]: treesize reduction 6, result has 33.3 percent of original size [2021-06-05 05:00:54,954 INFO L518 ElimStorePlain]: Eliminatee index_of_4 vanished before elimination [2021-06-05 05:00:54,955 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:00:54,955 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:23, output treesize:3 [2021-06-05 05:00:54,972 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:00:54,972 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518912198] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:00:54,972 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:00:54,972 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11] total 17 [2021-06-05 05:00:54,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079145372] [2021-06-05 05:00:54,973 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 05:00:54,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:00:54,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 05:00:54,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2021-06-05 05:00:54,973 INFO L87 Difference]: Start difference. First operand 595 states and 1770 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 17 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:55,926 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 55 [2021-06-05 05:00:56,284 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2021-06-05 05:00:56,461 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2021-06-05 05:00:56,599 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2021-06-05 05:00:56,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:00:56,624 INFO L93 Difference]: Finished difference Result 949 states and 2658 transitions. [2021-06-05 05:00:56,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 05:00:56,630 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 17 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-06-05 05:00:56,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:00:56,632 INFO L225 Difference]: With dead ends: 949 [2021-06-05 05:00:56,632 INFO L226 Difference]: Without dead ends: 810 [2021-06-05 05:00:56,634 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 1551.5ms TimeCoverageRelationStatistics Valid=237, Invalid=1169, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 05:00:56,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 810 states. [2021-06-05 05:00:56,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 810 to 595. [2021-06-05 05:00:56,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 595 states, 594 states have (on average 2.9696969696969697) internal successors, (1764), 594 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:56,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 1764 transitions. [2021-06-05 05:00:56,664 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 1764 transitions. Word has length 21 [2021-06-05 05:00:56,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:00:56,664 INFO L482 AbstractCegarLoop]: Abstraction has 595 states and 1764 transitions. [2021-06-05 05:00:56,665 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 17 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:56,665 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 1764 transitions. [2021-06-05 05:00:56,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 05:00:56,666 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:00:56,666 INFO L521 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:00:56,888 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2937 [2021-06-05 05:00:56,889 INFO L430 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:00:56,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:00:56,889 INFO L82 PathProgramCache]: Analyzing trace with hash 1093329313, now seen corresponding path program 34 times [2021-06-05 05:00:56,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:00:56,889 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912036537] [2021-06-05 05:00:56,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:00:56,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:00:56,996 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:00:56,997 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:00:56,997 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912036537] [2021-06-05 05:00:56,997 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912036537] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:00:56,997 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395503271] [2021-06-05 05:00:56,997 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:00:57,029 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 05:00:57,030 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:00:57,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 13 conjunts are in the unsatisfiable core [2021-06-05 05:00:57,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:00:57,133 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:00:57,133 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [395503271] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:00:57,133 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:00:57,133 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 15 [2021-06-05 05:00:57,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707845757] [2021-06-05 05:00:57,134 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 05:00:57,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:00:57,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 05:00:57,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2021-06-05 05:00:57,134 INFO L87 Difference]: Start difference. First operand 595 states and 1764 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:58,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:00:58,992 INFO L93 Difference]: Finished difference Result 1176 states and 3407 transitions. [2021-06-05 05:00:58,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 05:00:58,993 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-06-05 05:00:58,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:00:58,994 INFO L225 Difference]: With dead ends: 1176 [2021-06-05 05:00:58,994 INFO L226 Difference]: Without dead ends: 997 [2021-06-05 05:00:58,994 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 589 ImplicationChecksByTransitivity, 1618.3ms TimeCoverageRelationStatistics Valid=522, Invalid=1928, Unknown=0, NotChecked=0, Total=2450 [2021-06-05 05:00:58,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2021-06-05 05:00:59,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 616. [2021-06-05 05:00:59,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 616 states, 615 states have (on average 2.991869918699187) internal successors, (1840), 615 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:59,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 1840 transitions. [2021-06-05 05:00:59,001 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 1840 transitions. Word has length 21 [2021-06-05 05:00:59,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:00:59,002 INFO L482 AbstractCegarLoop]: Abstraction has 616 states and 1840 transitions. [2021-06-05 05:00:59,002 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:59,002 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 1840 transitions. [2021-06-05 05:00:59,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 05:00:59,002 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:00:59,002 INFO L521 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:00:59,203 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2959,60 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:00:59,203 INFO L430 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:00:59,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:00:59,203 INFO L82 PathProgramCache]: Analyzing trace with hash -1108346931, now seen corresponding path program 35 times [2021-06-05 05:00:59,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:00:59,203 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397576730] [2021-06-05 05:00:59,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:00:59,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:00:59,363 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:00:59,364 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:00:59,364 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397576730] [2021-06-05 05:00:59,364 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397576730] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:00:59,364 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817016605] [2021-06-05 05:00:59,364 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:00:59,398 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-05 05:00:59,398 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:00:59,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 13 conjunts are in the unsatisfiable core [2021-06-05 05:00:59,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:00:59,514 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:00:59,514 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1817016605] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:00:59,515 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:00:59,515 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 15 [2021-06-05 05:00:59,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993918435] [2021-06-05 05:00:59,515 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 05:00:59,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:00:59,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 05:00:59,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-06-05 05:00:59,515 INFO L87 Difference]: Start difference. First operand 616 states and 1840 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:02,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:01:02,009 INFO L93 Difference]: Finished difference Result 1289 states and 3731 transitions. [2021-06-05 05:01:02,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-05 05:01:02,009 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-06-05 05:01:02,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:01:02,010 INFO L225 Difference]: With dead ends: 1289 [2021-06-05 05:01:02,011 INFO L226 Difference]: Without dead ends: 1079 [2021-06-05 05:01:02,011 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 854 ImplicationChecksByTransitivity, 2257.6ms TimeCoverageRelationStatistics Valid=659, Invalid=2647, Unknown=0, NotChecked=0, Total=3306 [2021-06-05 05:01:02,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2021-06-05 05:01:02,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 645. [2021-06-05 05:01:02,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 644 states have (on average 3.0062111801242235) internal successors, (1936), 644 states have internal predecessors, (1936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:02,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 1936 transitions. [2021-06-05 05:01:02,018 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 1936 transitions. Word has length 21 [2021-06-05 05:01:02,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:01:02,018 INFO L482 AbstractCegarLoop]: Abstraction has 645 states and 1936 transitions. [2021-06-05 05:01:02,018 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:02,018 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 1936 transitions. [2021-06-05 05:01:02,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 05:01:02,019 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:01:02,019 INFO L521 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:01:02,219 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2963 [2021-06-05 05:01:02,220 INFO L430 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:01:02,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:01:02,220 INFO L82 PathProgramCache]: Analyzing trace with hash -472818675, now seen corresponding path program 36 times [2021-06-05 05:01:02,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:01:02,220 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571109675] [2021-06-05 05:01:02,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:01:02,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:01:02,271 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:01:02,271 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:01:02,271 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571109675] [2021-06-05 05:01:02,271 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571109675] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:01:02,271 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1145628851] [2021-06-05 05:01:02,271 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:01:02,306 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 05:01:02,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:01:02,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 13 conjunts are in the unsatisfiable core [2021-06-05 05:01:02,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:01:02,404 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:01:02,404 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1145628851] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:01:02,404 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:01:02,404 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-06-05 05:01:02,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280204004] [2021-06-05 05:01:02,404 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 05:01:02,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:01:02,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 05:01:02,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-06-05 05:01:02,404 INFO L87 Difference]: Start difference. First operand 645 states and 1936 transitions. Second operand has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:02,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:01:02,571 INFO L93 Difference]: Finished difference Result 798 states and 2313 transitions. [2021-06-05 05:01:02,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 05:01:02,571 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-06-05 05:01:02,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:01:02,572 INFO L225 Difference]: With dead ends: 798 [2021-06-05 05:01:02,572 INFO L226 Difference]: Without dead ends: 719 [2021-06-05 05:01:02,572 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 180.0ms TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2021-06-05 05:01:02,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2021-06-05 05:01:02,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 584. [2021-06-05 05:01:02,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 584 states, 583 states have (on average 2.95368782161235) internal successors, (1722), 583 states have internal predecessors, (1722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:02,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 1722 transitions. [2021-06-05 05:01:02,578 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 1722 transitions. Word has length 21 [2021-06-05 05:01:02,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:01:02,578 INFO L482 AbstractCegarLoop]: Abstraction has 584 states and 1722 transitions. [2021-06-05 05:01:02,578 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:02,578 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 1722 transitions. [2021-06-05 05:01:02,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 05:01:02,579 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:01:02,579 INFO L521 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:01:02,779 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2972,62 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:01:02,779 INFO L430 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:01:02,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:01:02,780 INFO L82 PathProgramCache]: Analyzing trace with hash 1676591253, now seen corresponding path program 37 times [2021-06-05 05:01:02,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:01:02,780 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507599599] [2021-06-05 05:01:02,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:01:02,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:01:02,841 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-06-05 05:01:02,841 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:01:02,841 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507599599] [2021-06-05 05:01:02,841 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507599599] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:01:02,841 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195069414] [2021-06-05 05:01:02,841 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:01:02,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:01:02,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 13 conjunts are in the unsatisfiable core [2021-06-05 05:01:02,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:01:02,986 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:01:02,986 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1195069414] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:01:02,987 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:01:02,987 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-06-05 05:01:02,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074422118] [2021-06-05 05:01:02,987 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 05:01:02,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:01:02,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 05:01:02,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-06-05 05:01:02,987 INFO L87 Difference]: Start difference. First operand 584 states and 1722 transitions. Second operand has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:03,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:01:03,842 INFO L93 Difference]: Finished difference Result 918 states and 2631 transitions. [2021-06-05 05:01:03,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-05 05:01:03,843 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-06-05 05:01:03,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:01:03,844 INFO L225 Difference]: With dead ends: 918 [2021-06-05 05:01:03,844 INFO L226 Difference]: Without dead ends: 747 [2021-06-05 05:01:03,844 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 700.3ms TimeCoverageRelationStatistics Valid=316, Invalid=1406, Unknown=0, NotChecked=0, Total=1722 [2021-06-05 05:01:03,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2021-06-05 05:01:03,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 584. [2021-06-05 05:01:03,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 584 states, 583 states have (on average 2.981132075471698) internal successors, (1738), 583 states have internal predecessors, (1738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:03,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 1738 transitions. [2021-06-05 05:01:03,850 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 1738 transitions. Word has length 21 [2021-06-05 05:01:03,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:01:03,850 INFO L482 AbstractCegarLoop]: Abstraction has 584 states and 1738 transitions. [2021-06-05 05:01:03,850 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:03,850 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 1738 transitions. [2021-06-05 05:01:03,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 05:01:03,851 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:01:03,851 INFO L521 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:01:04,051 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2980 [2021-06-05 05:01:04,051 INFO L430 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:01:04,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:01:04,052 INFO L82 PathProgramCache]: Analyzing trace with hash -1332233305, now seen corresponding path program 38 times [2021-06-05 05:01:04,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:01:04,052 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429630150] [2021-06-05 05:01:04,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:01:04,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:01:04,121 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:01:04,121 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:01:04,121 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429630150] [2021-06-05 05:01:04,121 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429630150] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:01:04,121 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23605663] [2021-06-05 05:01:04,121 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:01:04,154 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 05:01:04,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:01:04,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 13 conjunts are in the unsatisfiable core [2021-06-05 05:01:04,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:01:04,269 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:01:04,270 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23605663] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:01:04,270 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:01:04,270 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-06-05 05:01:04,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170807984] [2021-06-05 05:01:04,270 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 05:01:04,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:01:04,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 05:01:04,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-06-05 05:01:04,270 INFO L87 Difference]: Start difference. First operand 584 states and 1738 transitions. Second operand has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:05,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:01:05,402 INFO L93 Difference]: Finished difference Result 1087 states and 3150 transitions. [2021-06-05 05:01:05,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-05 05:01:05,403 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-06-05 05:01:05,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:01:05,404 INFO L225 Difference]: With dead ends: 1087 [2021-06-05 05:01:05,404 INFO L226 Difference]: Without dead ends: 877 [2021-06-05 05:01:05,404 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 454 ImplicationChecksByTransitivity, 954.6ms TimeCoverageRelationStatistics Valid=334, Invalid=1472, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 05:01:05,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 877 states. [2021-06-05 05:01:05,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 877 to 590. [2021-06-05 05:01:05,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 590 states, 589 states have (on average 2.9898132427843804) internal successors, (1761), 589 states have internal predecessors, (1761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:05,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 1761 transitions. [2021-06-05 05:01:05,415 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 1761 transitions. Word has length 21 [2021-06-05 05:01:05,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:01:05,415 INFO L482 AbstractCegarLoop]: Abstraction has 590 states and 1761 transitions. [2021-06-05 05:01:05,415 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:05,415 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 1761 transitions. [2021-06-05 05:01:05,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 05:01:05,416 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:01:05,416 INFO L521 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:01:05,619 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2986,64 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:01:05,620 INFO L430 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:01:05,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:01:05,620 INFO L82 PathProgramCache]: Analyzing trace with hash -162976903, now seen corresponding path program 19 times [2021-06-05 05:01:05,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:01:05,620 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225242257] [2021-06-05 05:01:05,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:01:05,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:01:05,645 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:01:05,646 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:01:05,646 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225242257] [2021-06-05 05:01:05,646 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225242257] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:01:05,646 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591396365] [2021-06-05 05:01:05,646 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:01:05,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:01:05,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjunts are in the unsatisfiable core [2021-06-05 05:01:05,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:01:05,714 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:01:05,715 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:05,726 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:01:05,727 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:01:05,728 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:05,736 INFO L628 ElimStorePlain]: treesize reduction 12, result has 33.3 percent of original size [2021-06-05 05:01:05,736 INFO L518 ElimStorePlain]: Eliminatee last_index_of_3 vanished before elimination [2021-06-05 05:01:05,736 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:01:05,736 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:42, output treesize:6 [2021-06-05 05:01:05,749 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:01:05,749 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1591396365] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:01:05,749 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:01:05,749 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 7 [2021-06-05 05:01:05,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111773117] [2021-06-05 05:01:05,749 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 05:01:05,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:01:05,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 05:01:05,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-06-05 05:01:05,750 INFO L87 Difference]: Start difference. First operand 590 states and 1761 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:05,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:01:05,852 INFO L93 Difference]: Finished difference Result 620 states and 1778 transitions. [2021-06-05 05:01:05,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 05:01:05,852 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-06-05 05:01:05,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:01:05,853 INFO L225 Difference]: With dead ends: 620 [2021-06-05 05:01:05,853 INFO L226 Difference]: Without dead ends: 421 [2021-06-05 05:01:05,853 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 92.4ms TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-06-05 05:01:05,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2021-06-05 05:01:05,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 403. [2021-06-05 05:01:05,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 402 states have (on average 2.9950248756218905) internal successors, (1204), 402 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:05,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 1204 transitions. [2021-06-05 05:01:05,857 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 1204 transitions. Word has length 21 [2021-06-05 05:01:05,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:01:05,857 INFO L482 AbstractCegarLoop]: Abstraction has 403 states and 1204 transitions. [2021-06-05 05:01:05,857 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:05,857 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 1204 transitions. [2021-06-05 05:01:05,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 05:01:05,858 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:01:05,858 INFO L521 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:01:06,058 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2997 [2021-06-05 05:01:06,058 INFO L430 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:01:06,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:01:06,059 INFO L82 PathProgramCache]: Analyzing trace with hash 97257547, now seen corresponding path program 20 times [2021-06-05 05:01:06,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:01:06,059 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029127687] [2021-06-05 05:01:06,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:01:06,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:01:06,085 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:01:06,086 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:01:06,086 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029127687] [2021-06-05 05:01:06,086 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029127687] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:01:06,086 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420730823] [2021-06-05 05:01:06,086 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:01:06,118 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 05:01:06,119 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:01:06,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjunts are in the unsatisfiable core [2021-06-05 05:01:06,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:01:06,150 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:01:06,151 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:06,161 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:01:06,163 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:01:06,164 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:06,172 INFO L628 ElimStorePlain]: treesize reduction 19, result has 24.0 percent of original size [2021-06-05 05:01:06,172 INFO L518 ElimStorePlain]: Eliminatee char_at_5 vanished before elimination [2021-06-05 05:01:06,173 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:01:06,173 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:42, output treesize:6 [2021-06-05 05:01:06,189 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:01:06,189 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [420730823] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:01:06,189 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:01:06,189 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 7 [2021-06-05 05:01:06,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520384524] [2021-06-05 05:01:06,189 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 05:01:06,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:01:06,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 05:01:06,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-06-05 05:01:06,189 INFO L87 Difference]: Start difference. First operand 403 states and 1204 transitions. Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:06,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:01:06,269 INFO L93 Difference]: Finished difference Result 391 states and 1164 transitions. [2021-06-05 05:01:06,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 05:01:06,270 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-06-05 05:01:06,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:01:06,270 INFO L225 Difference]: With dead ends: 391 [2021-06-05 05:01:06,270 INFO L226 Difference]: Without dead ends: 360 [2021-06-05 05:01:06,270 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 96.4ms TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-06-05 05:01:06,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2021-06-05 05:01:06,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 360. [2021-06-05 05:01:06,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 359 states have (on average 3.064066852367688) internal successors, (1100), 359 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:06,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 1100 transitions. [2021-06-05 05:01:06,274 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 1100 transitions. Word has length 21 [2021-06-05 05:01:06,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:01:06,274 INFO L482 AbstractCegarLoop]: Abstraction has 360 states and 1100 transitions. [2021-06-05 05:01:06,274 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:06,274 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 1100 transitions. [2021-06-05 05:01:06,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-06-05 05:01:06,275 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:01:06,275 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:01:06,475 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2999 [2021-06-05 05:01:06,475 INFO L430 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:01:06,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:01:06,475 INFO L82 PathProgramCache]: Analyzing trace with hash -1095041374, now seen corresponding path program 39 times [2021-06-05 05:01:06,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:01:06,476 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36027308] [2021-06-05 05:01:06,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:01:06,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:01:06,527 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-06-05 05:01:06,528 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:01:06,528 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36027308] [2021-06-05 05:01:06,528 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36027308] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:01:06,528 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1786337315] [2021-06-05 05:01:06,528 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:01:06,562 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-06-05 05:01:06,563 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:01:06,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-05 05:01:06,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:01:06,714 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:01:06,714 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1786337315] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:01:06,714 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:01:06,714 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 15 [2021-06-05 05:01:06,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454133702] [2021-06-05 05:01:06,714 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 05:01:06,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:01:06,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 05:01:06,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2021-06-05 05:01:06,714 INFO L87 Difference]: Start difference. First operand 360 states and 1100 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:07,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:01:07,503 INFO L93 Difference]: Finished difference Result 649 states and 1880 transitions. [2021-06-05 05:01:07,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 05:01:07,503 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-06-05 05:01:07,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:01:07,504 INFO L225 Difference]: With dead ends: 649 [2021-06-05 05:01:07,504 INFO L226 Difference]: Without dead ends: 516 [2021-06-05 05:01:07,504 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 791.5ms TimeCoverageRelationStatistics Valid=195, Invalid=561, Unknown=0, NotChecked=0, Total=756 [2021-06-05 05:01:07,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2021-06-05 05:01:07,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 378. [2021-06-05 05:01:07,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 377 states have (on average 3.0344827586206895) internal successors, (1144), 377 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:07,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 1144 transitions. [2021-06-05 05:01:07,510 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 1144 transitions. Word has length 22 [2021-06-05 05:01:07,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:01:07,510 INFO L482 AbstractCegarLoop]: Abstraction has 378 states and 1144 transitions. [2021-06-05 05:01:07,510 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:07,510 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 1144 transitions. [2021-06-05 05:01:07,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-06-05 05:01:07,510 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:01:07,510 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:01:07,710 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3001 [2021-06-05 05:01:07,711 INFO L430 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:01:07,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:01:07,711 INFO L82 PathProgramCache]: Analyzing trace with hash -550900768, now seen corresponding path program 40 times [2021-06-05 05:01:07,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:01:07,711 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837561133] [2021-06-05 05:01:07,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:01:07,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:01:07,811 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:01:07,811 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:01:07,811 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837561133] [2021-06-05 05:01:07,811 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837561133] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:01:07,811 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938478165] [2021-06-05 05:01:07,811 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:01:07,844 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 05:01:07,845 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:01:07,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-05 05:01:07,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:01:08,030 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:01:08,031 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [938478165] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:01:08,031 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:01:08,031 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-06-05 05:01:08,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80787249] [2021-06-05 05:01:08,031 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 05:01:08,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:01:08,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 05:01:08,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2021-06-05 05:01:08,031 INFO L87 Difference]: Start difference. First operand 378 states and 1144 transitions. Second operand has 17 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:09,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:01:09,630 INFO L93 Difference]: Finished difference Result 775 states and 2237 transitions. [2021-06-05 05:01:09,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-05 05:01:09,630 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-06-05 05:01:09,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:01:09,631 INFO L225 Difference]: With dead ends: 775 [2021-06-05 05:01:09,631 INFO L226 Difference]: Without dead ends: 663 [2021-06-05 05:01:09,631 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 1571.0ms TimeCoverageRelationStatistics Valid=244, Invalid=878, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 05:01:09,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2021-06-05 05:01:09,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 408. [2021-06-05 05:01:09,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 407 states have (on average 3.0245700245700244) internal successors, (1231), 407 states have internal predecessors, (1231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:09,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 1231 transitions. [2021-06-05 05:01:09,636 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 1231 transitions. Word has length 22 [2021-06-05 05:01:09,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:01:09,636 INFO L482 AbstractCegarLoop]: Abstraction has 408 states and 1231 transitions. [2021-06-05 05:01:09,636 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:09,636 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 1231 transitions. [2021-06-05 05:01:09,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-06-05 05:01:09,637 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:01:09,637 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:01:09,837 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3004,68 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:01:09,837 INFO L430 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:01:09,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:01:09,838 INFO L82 PathProgramCache]: Analyzing trace with hash -2019083290, now seen corresponding path program 41 times [2021-06-05 05:01:09,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:01:09,838 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246970951] [2021-06-05 05:01:09,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:01:09,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:01:09,926 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:01:09,927 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:01:09,927 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246970951] [2021-06-05 05:01:09,927 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246970951] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:01:09,927 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1335824393] [2021-06-05 05:01:09,927 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:01:09,960 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 05:01:09,960 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:01:09,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-05 05:01:09,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:01:10,176 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:01:10,177 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1335824393] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:01:10,177 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:01:10,177 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-06-05 05:01:10,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148209821] [2021-06-05 05:01:10,177 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 05:01:10,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:01:10,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 05:01:10,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2021-06-05 05:01:10,177 INFO L87 Difference]: Start difference. First operand 408 states and 1231 transitions. Second operand has 18 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 18 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:12,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:01:12,093 INFO L93 Difference]: Finished difference Result 1222 states and 3425 transitions. [2021-06-05 05:01:12,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-05 05:01:12,093 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 18 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-06-05 05:01:12,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:01:12,095 INFO L225 Difference]: With dead ends: 1222 [2021-06-05 05:01:12,095 INFO L226 Difference]: Without dead ends: 1017 [2021-06-05 05:01:12,095 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 831 ImplicationChecksByTransitivity, 1592.2ms TimeCoverageRelationStatistics Valid=418, Invalid=2774, Unknown=0, NotChecked=0, Total=3192 [2021-06-05 05:01:12,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1017 states. [2021-06-05 05:01:12,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1017 to 471. [2021-06-05 05:01:12,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 470 states have (on average 3.1212765957446806) internal successors, (1467), 470 states have internal predecessors, (1467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:12,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 1467 transitions. [2021-06-05 05:01:12,102 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 1467 transitions. Word has length 22 [2021-06-05 05:01:12,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:01:12,102 INFO L482 AbstractCegarLoop]: Abstraction has 471 states and 1467 transitions. [2021-06-05 05:01:12,102 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 18 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:12,102 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 1467 transitions. [2021-06-05 05:01:12,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-06-05 05:01:12,102 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:01:12,102 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:01:12,303 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3007 [2021-06-05 05:01:12,303 INFO L430 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:01:12,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:01:12,303 INFO L82 PathProgramCache]: Analyzing trace with hash 445721030, now seen corresponding path program 42 times [2021-06-05 05:01:12,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:01:12,303 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124460499] [2021-06-05 05:01:12,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:01:12,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:01:12,411 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:01:12,411 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:01:12,411 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124460499] [2021-06-05 05:01:12,412 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124460499] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:01:12,412 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677570033] [2021-06-05 05:01:12,412 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:01:12,447 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 05:01:12,447 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:01:12,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-05 05:01:12,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:01:12,626 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:01:12,627 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [677570033] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:01:12,627 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:01:12,627 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-06-05 05:01:12,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145845044] [2021-06-05 05:01:12,627 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 05:01:12,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:01:12,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 05:01:12,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2021-06-05 05:01:12,627 INFO L87 Difference]: Start difference. First operand 471 states and 1467 transitions. Second operand has 17 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:14,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:01:14,302 INFO L93 Difference]: Finished difference Result 897 states and 2612 transitions. [2021-06-05 05:01:14,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-05 05:01:14,303 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-06-05 05:01:14,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:01:14,304 INFO L225 Difference]: With dead ends: 897 [2021-06-05 05:01:14,304 INFO L226 Difference]: Without dead ends: 738 [2021-06-05 05:01:14,304 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 1632.2ms TimeCoverageRelationStatistics Valid=236, Invalid=954, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 05:01:14,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2021-06-05 05:01:14,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 469. [2021-06-05 05:01:14,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 468 states have (on average 3.123931623931624) internal successors, (1462), 468 states have internal predecessors, (1462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:14,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 1462 transitions. [2021-06-05 05:01:14,309 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 1462 transitions. Word has length 22 [2021-06-05 05:01:14,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:01:14,310 INFO L482 AbstractCegarLoop]: Abstraction has 469 states and 1462 transitions. [2021-06-05 05:01:14,310 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:14,310 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 1462 transitions. [2021-06-05 05:01:14,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-06-05 05:01:14,310 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:01:14,310 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:01:14,511 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3020 [2021-06-05 05:01:14,511 INFO L430 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:01:14,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:01:14,511 INFO L82 PathProgramCache]: Analyzing trace with hash -192652090, now seen corresponding path program 43 times [2021-06-05 05:01:14,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:01:14,511 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442338905] [2021-06-05 05:01:14,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:01:14,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:01:14,569 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-06-05 05:01:14,570 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:01:14,570 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442338905] [2021-06-05 05:01:14,570 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442338905] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:01:14,570 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864136482] [2021-06-05 05:01:14,570 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:01:14,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:01:14,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-05 05:01:14,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:01:14,800 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:01:14,800 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [864136482] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:01:14,800 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:01:14,800 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 15 [2021-06-05 05:01:14,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864422103] [2021-06-05 05:01:14,801 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 05:01:14,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:01:14,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 05:01:14,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-06-05 05:01:14,801 INFO L87 Difference]: Start difference. First operand 469 states and 1462 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:15,856 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2021-06-05 05:01:16,378 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 51 [2021-06-05 05:01:16,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:01:16,653 INFO L93 Difference]: Finished difference Result 902 states and 2688 transitions. [2021-06-05 05:01:16,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-05 05:01:16,653 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-06-05 05:01:16,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:01:16,654 INFO L225 Difference]: With dead ends: 902 [2021-06-05 05:01:16,654 INFO L226 Difference]: Without dead ends: 815 [2021-06-05 05:01:16,655 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 1797.5ms TimeCoverageRelationStatistics Valid=311, Invalid=949, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 05:01:16,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 815 states. [2021-06-05 05:01:16,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 815 to 522. [2021-06-05 05:01:16,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 521 states have (on average 3.1708253358925145) internal successors, (1652), 521 states have internal predecessors, (1652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:16,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 1652 transitions. [2021-06-05 05:01:16,661 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 1652 transitions. Word has length 22 [2021-06-05 05:01:16,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:01:16,661 INFO L482 AbstractCegarLoop]: Abstraction has 522 states and 1652 transitions. [2021-06-05 05:01:16,661 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:16,661 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 1652 transitions. [2021-06-05 05:01:16,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-06-05 05:01:16,662 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:01:16,662 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:01:16,862 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3024,71 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:01:16,863 INFO L430 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:01:16,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:01:16,863 INFO L82 PathProgramCache]: Analyzing trace with hash -1619429600, now seen corresponding path program 44 times [2021-06-05 05:01:16,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:01:16,863 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130669202] [2021-06-05 05:01:16,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:01:16,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:01:16,989 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:01:16,989 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:01:16,990 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130669202] [2021-06-05 05:01:16,990 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130669202] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:01:16,990 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171064376] [2021-06-05 05:01:16,990 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:01:17,033 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 05:01:17,033 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:01:17,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-05 05:01:17,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:01:17,265 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:01:17,266 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [171064376] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:01:17,266 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:01:17,266 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-05 05:01:17,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607267342] [2021-06-05 05:01:17,266 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 05:01:17,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:01:17,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 05:01:17,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2021-06-05 05:01:17,266 INFO L87 Difference]: Start difference. First operand 522 states and 1652 transitions. Second operand has 16 states, 16 states have (on average 2.0625) internal successors, (33), 16 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:17,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:01:17,542 INFO L93 Difference]: Finished difference Result 685 states and 2106 transitions. [2021-06-05 05:01:17,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 05:01:17,542 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.0625) internal successors, (33), 16 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-06-05 05:01:17,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:01:17,543 INFO L225 Difference]: With dead ends: 685 [2021-06-05 05:01:17,543 INFO L226 Difference]: Without dead ends: 673 [2021-06-05 05:01:17,543 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 469.1ms TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2021-06-05 05:01:17,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2021-06-05 05:01:17,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 525. [2021-06-05 05:01:17,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 524 states have (on average 3.1698473282442747) internal successors, (1661), 524 states have internal predecessors, (1661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:17,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 1661 transitions. [2021-06-05 05:01:17,549 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 1661 transitions. Word has length 22 [2021-06-05 05:01:17,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:01:17,549 INFO L482 AbstractCegarLoop]: Abstraction has 525 states and 1661 transitions. [2021-06-05 05:01:17,549 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.0625) internal successors, (33), 16 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:17,550 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 1661 transitions. [2021-06-05 05:01:17,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-06-05 05:01:17,550 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:01:17,550 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:01:17,750 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3027,72 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:01:17,751 INFO L430 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:01:17,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:01:17,751 INFO L82 PathProgramCache]: Analyzing trace with hash 2043154182, now seen corresponding path program 45 times [2021-06-05 05:01:17,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:01:17,751 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927245297] [2021-06-05 05:01:17,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:01:17,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:01:17,850 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:01:17,850 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:01:17,851 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927245297] [2021-06-05 05:01:17,851 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927245297] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:01:17,851 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118656499] [2021-06-05 05:01:17,851 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:01:17,909 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 05:01:17,909 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:01:17,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-05 05:01:17,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:01:18,147 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:01:18,147 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2118656499] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:01:18,147 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:01:18,147 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-05 05:01:18,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865364145] [2021-06-05 05:01:18,148 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 05:01:18,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:01:18,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 05:01:18,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2021-06-05 05:01:18,148 INFO L87 Difference]: Start difference. First operand 525 states and 1661 transitions. Second operand has 16 states, 16 states have (on average 2.0) internal successors, (32), 16 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:18,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:01:18,635 INFO L93 Difference]: Finished difference Result 724 states and 2204 transitions. [2021-06-05 05:01:18,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-05 05:01:18,635 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.0) internal successors, (32), 16 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-06-05 05:01:18,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:01:18,636 INFO L225 Difference]: With dead ends: 724 [2021-06-05 05:01:18,636 INFO L226 Difference]: Without dead ends: 718 [2021-06-05 05:01:18,636 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 589.9ms TimeCoverageRelationStatistics Valid=116, Invalid=346, Unknown=0, NotChecked=0, Total=462 [2021-06-05 05:01:18,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2021-06-05 05:01:18,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 537. [2021-06-05 05:01:18,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 536 states have (on average 3.167910447761194) internal successors, (1698), 536 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:18,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 1698 transitions. [2021-06-05 05:01:18,643 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 1698 transitions. Word has length 22 [2021-06-05 05:01:18,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:01:18,643 INFO L482 AbstractCegarLoop]: Abstraction has 537 states and 1698 transitions. [2021-06-05 05:01:18,643 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.0) internal successors, (32), 16 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:18,643 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 1698 transitions. [2021-06-05 05:01:18,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-06-05 05:01:18,643 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:01:18,643 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:01:18,844 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3030 [2021-06-05 05:01:18,844 INFO L430 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:01:18,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:01:18,844 INFO L82 PathProgramCache]: Analyzing trace with hash -245042398, now seen corresponding path program 46 times [2021-06-05 05:01:18,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:01:18,844 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276057980] [2021-06-05 05:01:18,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:01:18,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:01:18,939 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:01:18,940 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:01:18,940 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276057980] [2021-06-05 05:01:18,940 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276057980] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:01:18,940 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23485624] [2021-06-05 05:01:18,940 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:01:18,974 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 05:01:18,974 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:01:18,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-05 05:01:18,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:01:19,172 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:01:19,172 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23485624] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:01:19,172 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:01:19,172 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-05 05:01:19,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510515546] [2021-06-05 05:01:19,172 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 05:01:19,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:01:19,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 05:01:19,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-06-05 05:01:19,173 INFO L87 Difference]: Start difference. First operand 537 states and 1698 transitions. Second operand has 16 states, 16 states have (on average 2.0) internal successors, (32), 16 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:19,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:01:19,477 INFO L93 Difference]: Finished difference Result 688 states and 2128 transitions. [2021-06-05 05:01:19,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 05:01:19,477 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.0) internal successors, (32), 16 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-06-05 05:01:19,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:01:19,478 INFO L225 Difference]: With dead ends: 688 [2021-06-05 05:01:19,478 INFO L226 Difference]: Without dead ends: 688 [2021-06-05 05:01:19,478 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 400.7ms TimeCoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2021-06-05 05:01:19,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2021-06-05 05:01:19,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 526. [2021-06-05 05:01:19,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 525 states have (on average 3.1714285714285713) internal successors, (1665), 525 states have internal predecessors, (1665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:19,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 1665 transitions. [2021-06-05 05:01:19,484 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 1665 transitions. Word has length 22 [2021-06-05 05:01:19,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:01:19,484 INFO L482 AbstractCegarLoop]: Abstraction has 526 states and 1665 transitions. [2021-06-05 05:01:19,485 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.0) internal successors, (32), 16 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:19,485 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 1665 transitions. [2021-06-05 05:01:19,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-06-05 05:01:19,485 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:01:19,485 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:01:19,685 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3035,74 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:01:19,686 INFO L430 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:01:19,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:01:19,686 INFO L82 PathProgramCache]: Analyzing trace with hash -1221101524, now seen corresponding path program 47 times [2021-06-05 05:01:19,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:01:19,686 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039917424] [2021-06-05 05:01:19,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:01:19,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:01:19,747 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:01:19,748 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:01:19,748 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039917424] [2021-06-05 05:01:19,748 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039917424] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:01:19,748 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1929463154] [2021-06-05 05:01:19,748 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:01:19,781 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 05:01:19,782 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:01:19,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-05 05:01:19,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:01:19,982 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:01:19,983 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1929463154] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:01:19,983 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:01:19,983 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 16 [2021-06-05 05:01:19,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750339716] [2021-06-05 05:01:19,983 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 05:01:19,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:01:19,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 05:01:19,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2021-06-05 05:01:19,983 INFO L87 Difference]: Start difference. First operand 526 states and 1665 transitions. Second operand has 16 states, 16 states have (on average 2.5625) internal successors, (41), 16 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:21,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:01:21,415 INFO L93 Difference]: Finished difference Result 896 states and 2652 transitions. [2021-06-05 05:01:21,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-05 05:01:21,415 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.5625) internal successors, (41), 16 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-06-05 05:01:21,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:01:21,416 INFO L225 Difference]: With dead ends: 896 [2021-06-05 05:01:21,416 INFO L226 Difference]: Without dead ends: 802 [2021-06-05 05:01:21,417 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 1343.3ms TimeCoverageRelationStatistics Valid=233, Invalid=823, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 05:01:21,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 802 states. [2021-06-05 05:01:21,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 802 to 495. [2021-06-05 05:01:21,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 494 states have (on average 3.145748987854251) internal successors, (1554), 494 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:21,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 1554 transitions. [2021-06-05 05:01:21,423 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 1554 transitions. Word has length 22 [2021-06-05 05:01:21,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:01:21,423 INFO L482 AbstractCegarLoop]: Abstraction has 495 states and 1554 transitions. [2021-06-05 05:01:21,423 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.5625) internal successors, (41), 16 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:21,423 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 1554 transitions. [2021-06-05 05:01:21,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-06-05 05:01:21,424 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:01:21,424 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:01:21,632 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3040 [2021-06-05 05:01:21,632 INFO L430 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:01:21,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:01:21,632 INFO L82 PathProgramCache]: Analyzing trace with hash 2053463724, now seen corresponding path program 48 times [2021-06-05 05:01:21,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:01:21,632 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876602452] [2021-06-05 05:01:21,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:01:21,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:01:21,736 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:01:21,736 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:01:21,736 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876602452] [2021-06-05 05:01:21,736 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876602452] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:01:21,736 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138707595] [2021-06-05 05:01:21,736 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:01:21,779 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-06-05 05:01:21,779 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:01:21,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-05 05:01:21,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:01:21,991 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:01:21,992 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138707595] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:01:21,992 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:01:21,992 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-06-05 05:01:21,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558040386] [2021-06-05 05:01:21,992 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 05:01:21,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:01:21,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 05:01:21,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2021-06-05 05:01:21,992 INFO L87 Difference]: Start difference. First operand 495 states and 1554 transitions. Second operand has 17 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:22,445 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2021-06-05 05:01:23,006 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-06-05 05:01:23,303 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2021-06-05 05:01:23,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:01:23,774 INFO L93 Difference]: Finished difference Result 929 states and 2736 transitions. [2021-06-05 05:01:23,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-05 05:01:23,774 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-06-05 05:01:23,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:01:23,775 INFO L225 Difference]: With dead ends: 929 [2021-06-05 05:01:23,775 INFO L226 Difference]: Without dead ends: 780 [2021-06-05 05:01:23,776 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 1755.0ms TimeCoverageRelationStatistics Valid=237, Invalid=953, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 05:01:23,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2021-06-05 05:01:23,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 480. [2021-06-05 05:01:23,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 479 states have (on average 3.127348643006263) internal successors, (1498), 479 states have internal predecessors, (1498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:23,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 1498 transitions. [2021-06-05 05:01:23,781 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 1498 transitions. Word has length 22 [2021-06-05 05:01:23,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:01:23,781 INFO L482 AbstractCegarLoop]: Abstraction has 480 states and 1498 transitions. [2021-06-05 05:01:23,782 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:23,782 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 1498 transitions. [2021-06-05 05:01:23,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-06-05 05:01:23,782 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:01:23,782 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:01:23,982 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3047,76 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:01:23,983 INFO L430 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:01:23,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:01:23,983 INFO L82 PathProgramCache]: Analyzing trace with hash 1014057012, now seen corresponding path program 49 times [2021-06-05 05:01:23,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:01:23,983 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721856578] [2021-06-05 05:01:23,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:01:23,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:01:24,060 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:01:24,061 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:01:24,061 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721856578] [2021-06-05 05:01:24,061 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721856578] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:01:24,061 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16781731] [2021-06-05 05:01:24,061 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:01:24,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:01:24,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-05 05:01:24,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:01:24,331 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:01:24,332 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:24,336 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:24,337 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:24,337 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:01:24,338 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:24,343 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:24,343 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:24,343 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:01:24,344 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:24,349 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:24,349 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:24,353 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:24,354 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:24,671 WARN L205 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 60 [2021-06-05 05:01:24,672 INFO L628 ElimStorePlain]: treesize reduction 226, result has 59.1 percent of original size [2021-06-05 05:01:24,676 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:01:24,677 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:24,680 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:01:24,681 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:24,685 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:01:24,685 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:24,822 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2021-06-05 05:01:24,822 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:01:24,826 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:01:24,827 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:24,830 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:01:24,831 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:24,834 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:01:24,835 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:24,964 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2021-06-05 05:01:24,965 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:01:24,969 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:01:24,970 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:24,973 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:01:24,974 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:24,977 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:01:24,978 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:25,101 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2021-06-05 05:01:25,102 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:01:25,107 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: 12 dim-0 vars, and 15 xjuncts. [2021-06-05 05:01:25,108 INFO L247 ElimStorePlain]: Needed 15 recursive calls to eliminate 8 variables, input treesize:641, output treesize:281 [2021-06-05 05:01:25,301 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 65 [2021-06-05 05:01:25,850 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:01:25,851 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [16781731] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:01:25,851 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:01:25,851 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-05 05:01:25,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906802875] [2021-06-05 05:01:25,851 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 05:01:25,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:01:25,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 05:01:25,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2021-06-05 05:01:25,851 INFO L87 Difference]: Start difference. First operand 480 states and 1498 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:26,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:01:26,304 INFO L93 Difference]: Finished difference Result 728 states and 2203 transitions. [2021-06-05 05:01:26,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-05 05:01:26,304 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-06-05 05:01:26,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:01:26,305 INFO L225 Difference]: With dead ends: 728 [2021-06-05 05:01:26,305 INFO L226 Difference]: Without dead ends: 661 [2021-06-05 05:01:26,305 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 652.8ms TimeCoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2021-06-05 05:01:26,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2021-06-05 05:01:26,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 416. [2021-06-05 05:01:26,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 415 states have (on average 3.0746987951807228) internal successors, (1276), 415 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:26,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 1276 transitions. [2021-06-05 05:01:26,310 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 1276 transitions. Word has length 22 [2021-06-05 05:01:26,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:01:26,310 INFO L482 AbstractCegarLoop]: Abstraction has 416 states and 1276 transitions. [2021-06-05 05:01:26,310 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:26,310 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 1276 transitions. [2021-06-05 05:01:26,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-06-05 05:01:26,311 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:01:26,311 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:01:26,511 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3052 [2021-06-05 05:01:26,511 INFO L430 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:01:26,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:01:26,511 INFO L82 PathProgramCache]: Analyzing trace with hash -288754038, now seen corresponding path program 50 times [2021-06-05 05:01:26,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:01:26,512 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763716007] [2021-06-05 05:01:26,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:01:26,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:01:26,625 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:01:26,625 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:01:26,625 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763716007] [2021-06-05 05:01:26,626 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763716007] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:01:26,626 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488298206] [2021-06-05 05:01:26,626 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:01:26,660 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 05:01:26,660 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:01:26,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-05 05:01:26,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:01:26,973 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:26,973 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:26,974 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:01:26,974 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:26,977 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:26,978 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:26,978 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:01:26,979 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:26,981 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:26,982 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:26,982 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:01:26,983 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:26,985 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:01:26,986 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:26,989 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:26,989 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:26,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:01:26,993 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:26,995 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:26,996 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:26,998 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:26,999 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:01:26,999 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:27,057 INFO L628 ElimStorePlain]: treesize reduction 23, result has 76.8 percent of original size [2021-06-05 05:01:27,062 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: 4 dim-0 vars, and 3 xjuncts. [2021-06-05 05:01:27,062 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 4 variables, input treesize:349, output treesize:76 [2021-06-05 05:01:27,162 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:01:27,162 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [488298206] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:01:27,162 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:01:27,162 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-06-05 05:01:27,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878780852] [2021-06-05 05:01:27,163 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 05:01:27,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:01:27,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 05:01:27,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-06-05 05:01:27,163 INFO L87 Difference]: Start difference. First operand 416 states and 1276 transitions. Second operand has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:27,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:01:27,488 INFO L93 Difference]: Finished difference Result 498 states and 1470 transitions. [2021-06-05 05:01:27,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-05 05:01:27,488 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-06-05 05:01:27,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:01:27,489 INFO L225 Difference]: With dead ends: 498 [2021-06-05 05:01:27,489 INFO L226 Difference]: Without dead ends: 492 [2021-06-05 05:01:27,489 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 349.3ms TimeCoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2021-06-05 05:01:27,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2021-06-05 05:01:27,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 432. [2021-06-05 05:01:27,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 431 states have (on average 3.0533642691415315) internal successors, (1316), 431 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:27,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 1316 transitions. [2021-06-05 05:01:27,493 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 1316 transitions. Word has length 22 [2021-06-05 05:01:27,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:01:27,494 INFO L482 AbstractCegarLoop]: Abstraction has 432 states and 1316 transitions. [2021-06-05 05:01:27,494 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:27,494 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 1316 transitions. [2021-06-05 05:01:27,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-06-05 05:01:27,494 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:01:27,494 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:01:27,694 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3218 [2021-06-05 05:01:27,695 INFO L430 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:01:27,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:01:27,695 INFO L82 PathProgramCache]: Analyzing trace with hash -1265476276, now seen corresponding path program 51 times [2021-06-05 05:01:27,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:01:27,695 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968362926] [2021-06-05 05:01:27,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:01:27,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:01:27,771 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:01:27,771 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:01:27,771 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968362926] [2021-06-05 05:01:27,771 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968362926] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:01:27,771 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266520048] [2021-06-05 05:01:27,771 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:01:27,806 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-06-05 05:01:27,806 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:01:27,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-05 05:01:27,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:01:27,976 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:01:27,976 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266520048] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:01:27,976 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:01:27,976 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 16 [2021-06-05 05:01:27,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896573971] [2021-06-05 05:01:27,976 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 05:01:27,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:01:27,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 05:01:27,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2021-06-05 05:01:27,977 INFO L87 Difference]: Start difference. First operand 432 states and 1316 transitions. Second operand has 16 states, 16 states have (on average 2.5625) internal successors, (41), 16 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:29,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:01:29,100 INFO L93 Difference]: Finished difference Result 940 states and 2718 transitions. [2021-06-05 05:01:29,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-05 05:01:29,100 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.5625) internal successors, (41), 16 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-06-05 05:01:29,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:01:29,101 INFO L225 Difference]: With dead ends: 940 [2021-06-05 05:01:29,101 INFO L226 Difference]: Without dead ends: 724 [2021-06-05 05:01:29,101 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 488 ImplicationChecksByTransitivity, 794.3ms TimeCoverageRelationStatistics Valid=250, Invalid=1820, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 05:01:29,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2021-06-05 05:01:29,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 461. [2021-06-05 05:01:29,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 460 states have (on average 3.117391304347826) internal successors, (1434), 460 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:29,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 1434 transitions. [2021-06-05 05:01:29,107 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 1434 transitions. Word has length 22 [2021-06-05 05:01:29,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:01:29,107 INFO L482 AbstractCegarLoop]: Abstraction has 461 states and 1434 transitions. [2021-06-05 05:01:29,107 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.5625) internal successors, (41), 16 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:29,107 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 1434 transitions. [2021-06-05 05:01:29,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-06-05 05:01:29,108 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:01:29,108 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:01:29,309 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 79 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3254 [2021-06-05 05:01:29,310 INFO L430 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:01:29,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:01:29,310 INFO L82 PathProgramCache]: Analyzing trace with hash -927127158, now seen corresponding path program 52 times [2021-06-05 05:01:29,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:01:29,310 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857224632] [2021-06-05 05:01:29,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:01:29,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:01:29,373 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-06-05 05:01:29,373 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:01:29,373 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857224632] [2021-06-05 05:01:29,373 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857224632] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:01:29,374 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [312672065] [2021-06-05 05:01:29,374 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:01:29,407 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 05:01:29,407 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:01:29,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-05 05:01:29,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:01:29,636 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:01:29,637 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:29,642 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:29,643 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:29,643 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:01:29,644 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:29,650 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:29,650 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:29,651 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:01:29,651 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:29,657 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:29,657 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:29,658 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:01:29,658 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:29,664 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:29,664 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:30,128 WARN L205 SmtUtils]: Spent 463.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 91 [2021-06-05 05:01:30,129 INFO L628 ElimStorePlain]: treesize reduction 408, result has 54.0 percent of original size [2021-06-05 05:01:30,134 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:01:30,135 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:30,139 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:01:30,140 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:30,145 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:01:30,145 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:30,360 WARN L205 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-06-05 05:01:30,361 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:01:30,365 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:01:30,366 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:30,371 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:01:30,371 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:30,376 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:01:30,376 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:30,563 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2021-06-05 05:01:30,564 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:01:30,567 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:01:30,568 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:30,754 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2021-06-05 05:01:30,754 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:01:30,758 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:01:30,759 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:30,764 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:01:30,765 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:30,769 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:01:30,769 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:30,950 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2021-06-05 05:01:30,950 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:01:30,964 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 5 dim-1 vars, End of recursive call: 15 dim-0 vars, and 16 xjuncts. [2021-06-05 05:01:30,964 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 11 variables, input treesize:985, output treesize:413 [2021-06-05 05:01:31,180 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 103 [2021-06-05 05:01:31,416 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:01:31,417 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [312672065] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:01:31,417 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:01:31,417 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 15 [2021-06-05 05:01:31,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556335288] [2021-06-05 05:01:31,417 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 05:01:31,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:01:31,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 05:01:31,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2021-06-05 05:01:31,417 INFO L87 Difference]: Start difference. First operand 461 states and 1434 transitions. Second operand has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:31,644 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2021-06-05 05:01:31,829 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 108 [2021-06-05 05:01:32,027 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 66 [2021-06-05 05:01:32,223 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 117 [2021-06-05 05:01:32,539 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 76 [2021-06-05 05:01:32,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:01:32,637 INFO L93 Difference]: Finished difference Result 734 states and 2215 transitions. [2021-06-05 05:01:32,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-05 05:01:32,637 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-06-05 05:01:32,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:01:32,638 INFO L225 Difference]: With dead ends: 734 [2021-06-05 05:01:32,638 INFO L226 Difference]: Without dead ends: 626 [2021-06-05 05:01:32,639 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 1362.7ms TimeCoverageRelationStatistics Valid=141, Invalid=561, Unknown=0, NotChecked=0, Total=702 [2021-06-05 05:01:32,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2021-06-05 05:01:32,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 516. [2021-06-05 05:01:32,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 515 states have (on average 3.145631067961165) internal successors, (1620), 515 states have internal predecessors, (1620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:32,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 1620 transitions. [2021-06-05 05:01:32,644 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 1620 transitions. Word has length 22 [2021-06-05 05:01:32,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:01:32,644 INFO L482 AbstractCegarLoop]: Abstraction has 516 states and 1620 transitions. [2021-06-05 05:01:32,645 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:32,645 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 1620 transitions. [2021-06-05 05:01:32,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-06-05 05:01:32,645 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:01:32,645 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:01:32,845 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3268,80 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:01:32,846 INFO L430 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:01:32,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:01:32,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1941062628, now seen corresponding path program 53 times [2021-06-05 05:01:32,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:01:32,846 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638511844] [2021-06-05 05:01:32,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:01:32,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:01:32,924 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-06-05 05:01:32,924 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:01:32,924 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638511844] [2021-06-05 05:01:32,924 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638511844] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:01:32,924 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044930408] [2021-06-05 05:01:32,924 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:01:32,959 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 05:01:32,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:01:32,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-05 05:01:32,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:01:33,188 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:01:33,188 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2044930408] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:01:33,188 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:01:33,189 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 16 [2021-06-05 05:01:33,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129518941] [2021-06-05 05:01:33,189 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 05:01:33,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:01:33,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 05:01:33,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2021-06-05 05:01:33,189 INFO L87 Difference]: Start difference. First operand 516 states and 1620 transitions. Second operand has 16 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:34,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:01:34,144 INFO L93 Difference]: Finished difference Result 1018 states and 2971 transitions. [2021-06-05 05:01:34,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 05:01:34,144 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-06-05 05:01:34,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:01:34,146 INFO L225 Difference]: With dead ends: 1018 [2021-06-05 05:01:34,146 INFO L226 Difference]: Without dead ends: 853 [2021-06-05 05:01:34,146 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 813.9ms TimeCoverageRelationStatistics Valid=271, Invalid=1289, Unknown=0, NotChecked=0, Total=1560 [2021-06-05 05:01:34,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2021-06-05 05:01:34,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 523. [2021-06-05 05:01:34,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 523 states, 522 states have (on average 3.1379310344827585) internal successors, (1638), 522 states have internal predecessors, (1638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:34,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 1638 transitions. [2021-06-05 05:01:34,153 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 1638 transitions. Word has length 22 [2021-06-05 05:01:34,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:01:34,153 INFO L482 AbstractCegarLoop]: Abstraction has 523 states and 1638 transitions. [2021-06-05 05:01:34,153 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:34,153 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 1638 transitions. [2021-06-05 05:01:34,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-06-05 05:01:34,154 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:01:34,154 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:01:34,354 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3309 [2021-06-05 05:01:34,354 INFO L430 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:01:34,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:01:34,354 INFO L82 PathProgramCache]: Analyzing trace with hash -608354208, now seen corresponding path program 54 times [2021-06-05 05:01:34,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:01:34,354 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622157440] [2021-06-05 05:01:34,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:01:34,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:01:34,422 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-06-05 05:01:34,423 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:01:34,423 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622157440] [2021-06-05 05:01:34,423 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622157440] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:01:34,423 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464775567] [2021-06-05 05:01:34,423 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:01:34,457 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 05:01:34,457 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:01:34,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-05 05:01:34,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:01:34,721 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:34,721 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:34,722 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:01:34,722 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:34,726 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:34,727 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:34,727 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:01:34,727 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:34,731 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:01:34,732 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:34,736 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:34,736 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:34,736 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:01:34,737 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:34,741 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:34,741 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:34,741 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:01:34,742 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:34,746 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:34,746 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:34,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:01:34,747 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:34,750 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:01:34,751 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:34,755 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:34,755 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:34,759 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:34,759 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:34,759 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:01:34,760 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:34,764 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:34,764 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:34,765 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:01:34,765 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:34,769 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:01:34,770 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:34,773 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:34,774 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:34,774 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:01:34,775 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:34,778 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:34,779 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:34,779 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:01:34,779 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:34,783 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:34,783 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:34,787 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:34,787 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:34,787 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:01:34,788 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:34,792 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:34,792 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:34,792 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:01:34,793 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:34,797 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:34,797 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:34,797 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:01:34,798 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:34,801 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:34,802 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:34,802 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:01:34,802 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:34,806 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:34,806 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:34,809 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:34,810 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:34,813 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:34,814 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:34,817 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:34,817 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:34,820 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:34,821 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:34,823 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:34,824 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:34,827 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:34,828 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:01:34,829 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:34,995 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 34 [2021-06-05 05:01:34,996 INFO L628 ElimStorePlain]: treesize reduction 33, result has 87.6 percent of original size [2021-06-05 05:01:35,000 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 8 dim-0 vars, and 9 xjuncts. [2021-06-05 05:01:35,000 INFO L247 ElimStorePlain]: Needed 26 recursive calls to eliminate 2 variables, input treesize:981, output treesize:226 [2021-06-05 05:01:35,281 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:01:35,281 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [464775567] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:01:35,281 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:01:35,281 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 15 [2021-06-05 05:01:35,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62247925] [2021-06-05 05:01:35,281 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 05:01:35,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:01:35,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 05:01:35,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-06-05 05:01:35,282 INFO L87 Difference]: Start difference. First operand 523 states and 1638 transitions. Second operand has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:35,597 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 108 [2021-06-05 05:01:35,783 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 70 [2021-06-05 05:01:35,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:01:35,989 INFO L93 Difference]: Finished difference Result 865 states and 2618 transitions. [2021-06-05 05:01:35,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 05:01:35,989 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-06-05 05:01:35,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:01:35,990 INFO L225 Difference]: With dead ends: 865 [2021-06-05 05:01:35,990 INFO L226 Difference]: Without dead ends: 748 [2021-06-05 05:01:35,990 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 687.6ms TimeCoverageRelationStatistics Valid=104, Invalid=448, Unknown=0, NotChecked=0, Total=552 [2021-06-05 05:01:35,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2021-06-05 05:01:35,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 597. [2021-06-05 05:01:35,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 597 states, 596 states have (on average 3.1812080536912752) internal successors, (1896), 596 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:35,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 1896 transitions. [2021-06-05 05:01:35,997 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 1896 transitions. Word has length 22 [2021-06-05 05:01:35,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:01:35,997 INFO L482 AbstractCegarLoop]: Abstraction has 597 states and 1896 transitions. [2021-06-05 05:01:35,997 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:35,997 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 1896 transitions. [2021-06-05 05:01:35,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-06-05 05:01:35,998 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:01:35,998 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:01:36,198 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3321,82 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:01:36,198 INFO L430 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:01:36,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:01:36,198 INFO L82 PathProgramCache]: Analyzing trace with hash 511580858, now seen corresponding path program 55 times [2021-06-05 05:01:36,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:01:36,199 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577259321] [2021-06-05 05:01:36,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:01:36,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:01:36,270 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-06-05 05:01:36,271 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:01:36,271 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577259321] [2021-06-05 05:01:36,271 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577259321] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:01:36,271 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638365319] [2021-06-05 05:01:36,271 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:01:36,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:01:36,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-05 05:01:36,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:01:36,535 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:01:36,536 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:36,539 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:36,540 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:36,540 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:01:36,541 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:36,544 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:36,545 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:36,545 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:01:36,545 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:36,549 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:36,550 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:36,550 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:01:36,551 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:36,563 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:36,564 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:36,564 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:01:36,565 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:36,568 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:36,568 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:36,569 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:01:36,569 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:36,573 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:36,573 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:36,573 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:01:36,574 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:36,577 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:01:36,578 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:36,581 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:36,582 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:36,585 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:36,585 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:36,589 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:36,589 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:36,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:01:36,590 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:36,594 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:36,594 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:36,594 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:01:36,595 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:36,598 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:01:36,599 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:36,602 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:36,603 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:36,606 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:36,607 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:36,607 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:01:36,608 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:36,611 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:36,612 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:36,612 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:01:36,612 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:36,615 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:36,616 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:36,616 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:01:36,617 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:36,620 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:36,621 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:36,623 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:36,624 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:36,627 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:36,628 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:36,631 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:36,631 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:36,634 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:36,635 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:36,637 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:36,638 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:36,641 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:36,641 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:36,642 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:01:36,642 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:36,644 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:36,645 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:36,811 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 34 [2021-06-05 05:01:36,812 INFO L628 ElimStorePlain]: treesize reduction 33, result has 87.6 percent of original size [2021-06-05 05:01:36,815 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 8 dim-0 vars, and 9 xjuncts. [2021-06-05 05:01:36,815 INFO L247 ElimStorePlain]: Needed 26 recursive calls to eliminate 2 variables, input treesize:981, output treesize:226 [2021-06-05 05:01:37,116 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:01:37,116 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638365319] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:01:37,116 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:01:37,116 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 15 [2021-06-05 05:01:37,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010015719] [2021-06-05 05:01:37,116 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 05:01:37,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:01:37,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 05:01:37,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-06-05 05:01:37,117 INFO L87 Difference]: Start difference. First operand 597 states and 1896 transitions. Second operand has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:37,426 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 109 [2021-06-05 05:01:37,581 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 86 [2021-06-05 05:01:37,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:01:37,809 INFO L93 Difference]: Finished difference Result 875 states and 2647 transitions. [2021-06-05 05:01:37,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 05:01:37,810 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-06-05 05:01:37,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:01:37,811 INFO L225 Difference]: With dead ends: 875 [2021-06-05 05:01:37,811 INFO L226 Difference]: Without dead ends: 799 [2021-06-05 05:01:37,811 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 729.3ms TimeCoverageRelationStatistics Valid=105, Invalid=401, Unknown=0, NotChecked=0, Total=506 [2021-06-05 05:01:37,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2021-06-05 05:01:37,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 575. [2021-06-05 05:01:37,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 574 states have (on average 3.181184668989547) internal successors, (1826), 574 states have internal predecessors, (1826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:37,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 1826 transitions. [2021-06-05 05:01:37,817 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 1826 transitions. Word has length 22 [2021-06-05 05:01:37,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:01:37,817 INFO L482 AbstractCegarLoop]: Abstraction has 575 states and 1826 transitions. [2021-06-05 05:01:37,817 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:37,817 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 1826 transitions. [2021-06-05 05:01:37,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-06-05 05:01:37,818 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:01:37,818 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:01:38,018 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3409 [2021-06-05 05:01:38,019 INFO L430 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:01:38,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:01:38,019 INFO L82 PathProgramCache]: Analyzing trace with hash -115289004, now seen corresponding path program 56 times [2021-06-05 05:01:38,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:01:38,019 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045917505] [2021-06-05 05:01:38,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:01:38,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:01:38,117 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:01:38,117 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:01:38,117 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045917505] [2021-06-05 05:01:38,117 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045917505] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:01:38,117 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117661781] [2021-06-05 05:01:38,117 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:01:38,150 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 05:01:38,151 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:01:38,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-05 05:01:38,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:01:38,346 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:38,347 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:38,347 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:01:38,347 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:38,351 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:38,351 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:38,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:01:38,352 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:38,356 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:38,356 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:38,357 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:01:38,358 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:38,361 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:38,361 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:38,361 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:01:38,362 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:38,365 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:38,366 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:38,366 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:01:38,367 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:38,370 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:38,371 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:38,374 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:38,374 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:38,378 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:38,378 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:38,378 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:01:38,379 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:38,382 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:38,382 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:38,382 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:01:38,383 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:38,386 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:38,387 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:38,390 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:38,390 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:38,391 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:01:38,391 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:38,394 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:38,395 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:38,395 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:01:38,396 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:38,399 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:38,399 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:38,402 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:38,403 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:38,405 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:38,406 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:38,408 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:38,409 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:38,412 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:38,412 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:38,415 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:38,416 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:38,416 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:01:38,416 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:38,419 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:38,420 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:38,422 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:38,423 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:38,492 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:01:38,495 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 6 dim-0 vars, and 6 xjuncts. [2021-06-05 05:01:38,496 INFO L247 ElimStorePlain]: Needed 21 recursive calls to eliminate 2 variables, input treesize:877, output treesize:193 [2021-06-05 05:01:38,707 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:01:38,707 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2117661781] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:01:38,707 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:01:38,707 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2021-06-05 05:01:38,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665980689] [2021-06-05 05:01:38,707 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 05:01:38,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:01:38,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 05:01:38,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-06-05 05:01:38,708 INFO L87 Difference]: Start difference. First operand 575 states and 1826 transitions. Second operand has 15 states, 15 states have (on average 2.066666666666667) internal successors, (31), 15 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:38,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:01:38,925 INFO L93 Difference]: Finished difference Result 669 states and 2094 transitions. [2021-06-05 05:01:38,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-05 05:01:38,925 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.066666666666667) internal successors, (31), 15 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-06-05 05:01:38,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:01:38,926 INFO L225 Difference]: With dead ends: 669 [2021-06-05 05:01:38,926 INFO L226 Difference]: Without dead ends: 651 [2021-06-05 05:01:38,926 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 350.6ms TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-06-05 05:01:38,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2021-06-05 05:01:38,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 586. [2021-06-05 05:01:38,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 586 states, 585 states have (on average 3.176068376068376) internal successors, (1858), 585 states have internal predecessors, (1858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:38,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 1858 transitions. [2021-06-05 05:01:38,932 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 1858 transitions. Word has length 22 [2021-06-05 05:01:38,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:01:38,932 INFO L482 AbstractCegarLoop]: Abstraction has 586 states and 1858 transitions. [2021-06-05 05:01:38,932 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.066666666666667) internal successors, (31), 15 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:38,932 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 1858 transitions. [2021-06-05 05:01:38,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-06-05 05:01:38,933 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:01:38,933 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:01:39,133 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 84 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3492 [2021-06-05 05:01:39,133 INFO L430 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:01:39,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:01:39,134 INFO L82 PathProgramCache]: Analyzing trace with hash -579622854, now seen corresponding path program 57 times [2021-06-05 05:01:39,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:01:39,134 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069542593] [2021-06-05 05:01:39,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:01:39,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:01:39,190 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-06-05 05:01:39,190 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:01:39,190 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069542593] [2021-06-05 05:01:39,190 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069542593] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:01:39,190 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931066294] [2021-06-05 05:01:39,190 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:01:39,225 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-06-05 05:01:39,225 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:01:39,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-05 05:01:39,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:01:39,341 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:01:39,341 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [931066294] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:01:39,341 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:01:39,341 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 14 [2021-06-05 05:01:39,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939439308] [2021-06-05 05:01:39,341 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 05:01:39,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:01:39,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 05:01:39,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-06-05 05:01:39,342 INFO L87 Difference]: Start difference. First operand 586 states and 1858 transitions. Second operand has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:39,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:01:39,673 INFO L93 Difference]: Finished difference Result 1088 states and 3290 transitions. [2021-06-05 05:01:39,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-05 05:01:39,673 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-06-05 05:01:39,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:01:39,674 INFO L225 Difference]: With dead ends: 1088 [2021-06-05 05:01:39,674 INFO L226 Difference]: Without dead ends: 992 [2021-06-05 05:01:39,675 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 338.3ms TimeCoverageRelationStatistics Valid=126, Invalid=380, Unknown=0, NotChecked=0, Total=506 [2021-06-05 05:01:39,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 992 states. [2021-06-05 05:01:39,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 992 to 657. [2021-06-05 05:01:39,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 656 states have (on average 3.2271341463414633) internal successors, (2117), 656 states have internal predecessors, (2117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:39,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 2117 transitions. [2021-06-05 05:01:39,682 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 2117 transitions. Word has length 22 [2021-06-05 05:01:39,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:01:39,682 INFO L482 AbstractCegarLoop]: Abstraction has 657 states and 2117 transitions. [2021-06-05 05:01:39,682 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:39,682 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 2117 transitions. [2021-06-05 05:01:39,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-06-05 05:01:39,683 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:01:39,683 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:01:39,883 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3560 [2021-06-05 05:01:39,884 INFO L430 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:01:39,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:01:39,884 INFO L82 PathProgramCache]: Analyzing trace with hash 790871956, now seen corresponding path program 58 times [2021-06-05 05:01:39,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:01:39,884 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995263686] [2021-06-05 05:01:39,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:01:39,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:01:39,993 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:01:39,993 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:01:39,993 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995263686] [2021-06-05 05:01:39,993 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995263686] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:01:39,993 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [894725477] [2021-06-05 05:01:39,993 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:01:40,043 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 05:01:40,043 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:01:40,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-05 05:01:40,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:01:40,306 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:40,307 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:40,307 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:01:40,308 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:40,311 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:40,312 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:40,312 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:01:40,312 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:40,316 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:40,316 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:40,316 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:01:40,317 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:40,321 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:40,321 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:40,321 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:01:40,322 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:40,325 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:40,326 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:40,326 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:01:40,327 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:40,330 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:40,330 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:40,331 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:01:40,331 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:40,335 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:40,336 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:40,336 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:01:40,337 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:40,340 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:40,341 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:40,341 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:01:40,342 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:40,345 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:40,345 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:40,348 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:40,349 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:40,352 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:40,353 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:40,353 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:01:40,354 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:40,356 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:40,357 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:40,360 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:40,361 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:40,364 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:40,364 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:40,364 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:01:40,365 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:40,368 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:40,368 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:40,368 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:01:40,369 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:40,372 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:40,373 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:40,375 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:40,376 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:40,378 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:40,379 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:40,381 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:40,382 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:40,384 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:40,384 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:40,453 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:01:40,470 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 6 dim-0 vars, and 6 xjuncts. [2021-06-05 05:01:40,470 INFO L247 ElimStorePlain]: Needed 21 recursive calls to eliminate 2 variables, input treesize:877, output treesize:193 [2021-06-05 05:01:41,056 INFO L446 ElimStorePlain]: Different costs {1=[char_at_9], 21=[char_at_5]} [2021-06-05 05:01:41,062 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:41,063 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:41,070 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:41,071 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:41,071 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:01:41,072 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:41,079 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:41,080 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:41,087 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:41,087 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:41,088 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:01:41,088 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:41,094 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:41,095 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:41,101 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:41,102 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:41,108 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:41,109 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:41,109 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:01:41,110 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:41,116 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:41,117 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:41,123 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:41,123 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:41,129 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:41,130 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:41,130 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:01:41,131 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:41,137 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:41,138 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:41,143 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:41,144 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:41,148 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:41,149 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:41,153 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:41,154 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:41,159 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:41,159 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:41,159 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:01:41,160 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:41,164 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:41,165 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:41,165 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:01:41,166 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:41,170 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:41,170 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:41,174 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:41,175 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:41,178 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:41,179 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:41,183 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:41,184 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:41,187 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:41,188 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:41,192 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:41,192 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:41,193 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:01:41,193 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:41,197 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:41,198 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:41,201 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:41,202 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:41,422 WARN L205 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 72 [2021-06-05 05:01:41,422 INFO L628 ElimStorePlain]: treesize reduction 20, result has 92.1 percent of original size [2021-06-05 05:01:41,427 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:01:41,428 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:41,432 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:01:41,433 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:41,437 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:01:41,437 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:41,441 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:01:41,442 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:41,446 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:01:41,447 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:41,450 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:01:41,451 INFO L550 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:41,454 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:01:41,455 INFO L550 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:41,459 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:01:41,459 INFO L550 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:41,462 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:01:41,463 INFO L550 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:41,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:01:41,467 INFO L550 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:41,549 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:01:41,552 INFO L550 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-06-05 05:01:41,552 INFO L247 ElimStorePlain]: Needed 35 recursive calls to eliminate 9 variables, input treesize:1141, output treesize:20 [2021-06-05 05:01:41,583 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:01:41,583 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [894725477] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:01:41,583 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:01:41,583 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2021-06-05 05:01:41,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243179025] [2021-06-05 05:01:41,583 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 05:01:41,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:01:41,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 05:01:41,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-06-05 05:01:41,583 INFO L87 Difference]: Start difference. First operand 657 states and 2117 transitions. Second operand has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:41,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:01:41,700 INFO L93 Difference]: Finished difference Result 739 states and 2351 transitions. [2021-06-05 05:01:41,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-05 05:01:41,700 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-06-05 05:01:41,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:01:41,701 INFO L225 Difference]: With dead ends: 739 [2021-06-05 05:01:41,701 INFO L226 Difference]: Without dead ends: 739 [2021-06-05 05:01:41,702 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 247.3ms TimeCoverageRelationStatistics Valid=85, Invalid=155, Unknown=0, NotChecked=0, Total=240 [2021-06-05 05:01:41,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2021-06-05 05:01:41,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 649. [2021-06-05 05:01:41,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 649 states, 648 states have (on average 3.236111111111111) internal successors, (2097), 648 states have internal predecessors, (2097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:41,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 2097 transitions. [2021-06-05 05:01:41,708 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 2097 transitions. Word has length 22 [2021-06-05 05:01:41,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:01:41,708 INFO L482 AbstractCegarLoop]: Abstraction has 649 states and 2097 transitions. [2021-06-05 05:01:41,708 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:41,708 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 2097 transitions. [2021-06-05 05:01:41,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-06-05 05:01:41,709 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:01:41,709 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:01:41,909 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3564,86 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:01:41,910 INFO L430 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:01:41,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:01:41,910 INFO L82 PathProgramCache]: Analyzing trace with hash -563404854, now seen corresponding path program 59 times [2021-06-05 05:01:41,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:01:41,910 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841026956] [2021-06-05 05:01:41,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:01:41,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:01:41,980 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-06-05 05:01:41,980 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:01:41,980 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841026956] [2021-06-05 05:01:41,980 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841026956] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:01:41,980 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801857384] [2021-06-05 05:01:41,980 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:01:42,014 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 05:01:42,014 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:01:42,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-05 05:01:42,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:01:42,164 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:01:42,165 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801857384] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:01:42,165 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:01:42,165 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 16 [2021-06-05 05:01:42,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209287150] [2021-06-05 05:01:42,165 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 05:01:42,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:01:42,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 05:01:42,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2021-06-05 05:01:42,165 INFO L87 Difference]: Start difference. First operand 649 states and 2097 transitions. Second operand has 16 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:42,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:01:42,607 INFO L93 Difference]: Finished difference Result 842 states and 2613 transitions. [2021-06-05 05:01:42,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-05 05:01:42,607 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-06-05 05:01:42,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:01:42,608 INFO L225 Difference]: With dead ends: 842 [2021-06-05 05:01:42,608 INFO L226 Difference]: Without dead ends: 766 [2021-06-05 05:01:42,608 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 444.0ms TimeCoverageRelationStatistics Valid=149, Invalid=663, Unknown=0, NotChecked=0, Total=812 [2021-06-05 05:01:42,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2021-06-05 05:01:42,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 612. [2021-06-05 05:01:42,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 612 states, 611 states have (on average 3.202945990180033) internal successors, (1957), 611 states have internal predecessors, (1957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:42,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 1957 transitions. [2021-06-05 05:01:42,614 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 1957 transitions. Word has length 22 [2021-06-05 05:01:42,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:01:42,615 INFO L482 AbstractCegarLoop]: Abstraction has 612 states and 1957 transitions. [2021-06-05 05:01:42,615 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:42,615 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 1957 transitions. [2021-06-05 05:01:42,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-06-05 05:01:42,615 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:01:42,615 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:01:42,816 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3751,87 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:01:42,816 INFO L430 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:01:42,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:01:42,816 INFO L82 PathProgramCache]: Analyzing trace with hash -439923656, now seen corresponding path program 60 times [2021-06-05 05:01:42,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:01:42,816 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381373168] [2021-06-05 05:01:42,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:01:42,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:01:42,924 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:01:42,924 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:01:42,925 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381373168] [2021-06-05 05:01:42,925 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381373168] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:01:42,925 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971765758] [2021-06-05 05:01:42,925 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:01:42,969 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 05:01:42,969 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:01:42,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-05 05:01:42,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:01:43,199 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:43,199 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:43,199 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:01:43,200 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:43,204 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:43,204 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:43,204 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:01:43,205 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:43,209 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:43,209 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:43,209 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:01:43,210 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:43,214 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:43,214 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:43,214 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:01:43,215 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:43,223 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:43,223 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:43,227 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:01:43,228 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:43,231 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:01:43,232 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:43,236 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:43,236 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:43,236 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:01:43,237 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:43,241 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:43,241 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:43,241 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:01:43,242 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:43,246 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:43,246 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:43,246 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:01:43,247 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:43,250 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:43,251 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:43,251 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:01:43,265 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:43,270 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:01:43,271 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:43,276 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:43,276 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:43,276 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:01:43,277 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:43,281 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:43,282 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:43,286 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:43,287 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:43,291 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:43,292 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:43,296 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:43,297 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:43,298 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:01:43,298 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:43,303 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:01:43,304 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:43,308 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:43,308 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:43,312 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:43,313 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:43,317 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:43,318 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:43,318 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:01:43,319 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:43,323 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:43,323 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:43,327 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:43,328 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:43,332 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:43,332 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:43,336 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:43,337 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:43,339 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:43,340 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:43,533 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2021-06-05 05:01:43,534 INFO L628 ElimStorePlain]: treesize reduction 36, result has 87.9 percent of original size [2021-06-05 05:01:43,538 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 8 dim-0 vars, and 9 xjuncts. [2021-06-05 05:01:43,538 INFO L247 ElimStorePlain]: Needed 26 recursive calls to eliminate 2 variables, input treesize:1065, output treesize:253 [2021-06-05 05:01:43,696 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2021-06-05 05:01:43,970 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:01:43,970 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971765758] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:01:43,970 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:01:43,970 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-06-05 05:01:43,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986369623] [2021-06-05 05:01:43,971 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 05:01:43,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:01:43,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 05:01:43,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-06-05 05:01:43,971 INFO L87 Difference]: Start difference. First operand 612 states and 1957 transitions. Second operand has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:44,224 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 63 [2021-06-05 05:01:44,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:01:44,302 INFO L93 Difference]: Finished difference Result 744 states and 2306 transitions. [2021-06-05 05:01:44,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-05 05:01:44,302 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-06-05 05:01:44,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:01:44,303 INFO L225 Difference]: With dead ends: 744 [2021-06-05 05:01:44,303 INFO L226 Difference]: Without dead ends: 734 [2021-06-05 05:01:44,303 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 466.6ms TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-06-05 05:01:44,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 734 states. [2021-06-05 05:01:44,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 734 to 635. [2021-06-05 05:01:44,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 634 states have (on average 3.190851735015773) internal successors, (2023), 634 states have internal predecessors, (2023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:44,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 2023 transitions. [2021-06-05 05:01:44,312 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 2023 transitions. Word has length 22 [2021-06-05 05:01:44,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:01:44,312 INFO L482 AbstractCegarLoop]: Abstraction has 635 states and 2023 transitions. [2021-06-05 05:01:44,312 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:44,312 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 2023 transitions. [2021-06-05 05:01:44,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-06-05 05:01:44,313 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:01:44,313 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:01:44,535 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3753,88 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:01:44,535 INFO L430 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:01:44,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:01:44,536 INFO L82 PathProgramCache]: Analyzing trace with hash -420587176, now seen corresponding path program 61 times [2021-06-05 05:01:44,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:01:44,536 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508335516] [2021-06-05 05:01:44,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:01:44,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:01:44,626 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:01:44,626 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:01:44,626 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508335516] [2021-06-05 05:01:44,626 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508335516] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:01:44,626 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1974705463] [2021-06-05 05:01:44,626 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:01:44,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:01:44,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-05 05:01:44,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:01:44,903 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:44,904 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:44,904 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:01:44,905 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:44,908 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:44,909 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:44,913 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:01:44,914 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:44,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:01:44,918 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:44,922 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:44,922 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:44,922 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:01:44,923 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:44,927 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:44,927 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:44,927 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:01:44,928 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:44,932 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:44,932 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:44,932 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:01:44,933 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:44,937 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:44,937 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:44,937 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:01:44,938 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:44,941 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:44,942 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:44,946 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:01:44,946 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:44,950 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:44,950 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:44,954 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:44,954 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:44,955 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:01:44,955 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:44,959 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:44,959 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:44,963 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:44,963 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:44,963 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:01:44,964 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:44,967 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:44,968 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:44,971 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:44,972 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:44,972 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:01:44,973 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:44,976 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:44,977 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:44,980 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:44,980 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:44,983 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:44,984 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:44,987 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:44,988 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:44,991 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:44,991 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:44,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:01:44,992 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:44,995 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:44,996 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:44,999 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:44,999 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:44,999 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:01:45,000 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:45,003 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:45,004 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:45,006 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:45,007 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:45,201 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2021-06-05 05:01:45,201 INFO L628 ElimStorePlain]: treesize reduction 36, result has 87.9 percent of original size [2021-06-05 05:01:45,206 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 8 dim-0 vars, and 9 xjuncts. [2021-06-05 05:01:45,206 INFO L247 ElimStorePlain]: Needed 26 recursive calls to eliminate 2 variables, input treesize:1065, output treesize:253 [2021-06-05 05:01:45,489 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:01:45,490 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1974705463] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:01:45,490 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:01:45,490 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-06-05 05:01:45,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267279935] [2021-06-05 05:01:45,490 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 05:01:45,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:01:45,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 05:01:45,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2021-06-05 05:01:45,490 INFO L87 Difference]: Start difference. First operand 635 states and 2023 transitions. Second operand has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:45,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:01:45,773 INFO L93 Difference]: Finished difference Result 743 states and 2302 transitions. [2021-06-05 05:01:45,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-05 05:01:45,773 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-06-05 05:01:45,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:01:45,774 INFO L225 Difference]: With dead ends: 743 [2021-06-05 05:01:45,774 INFO L226 Difference]: Without dead ends: 731 [2021-06-05 05:01:45,774 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 382.5ms TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2021-06-05 05:01:45,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2021-06-05 05:01:45,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 632. [2021-06-05 05:01:45,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 632 states, 631 states have (on average 3.1885895404120443) internal successors, (2012), 631 states have internal predecessors, (2012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:45,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 632 states to 632 states and 2012 transitions. [2021-06-05 05:01:45,781 INFO L78 Accepts]: Start accepts. Automaton has 632 states and 2012 transitions. Word has length 22 [2021-06-05 05:01:45,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:01:45,781 INFO L482 AbstractCegarLoop]: Abstraction has 632 states and 2012 transitions. [2021-06-05 05:01:45,781 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:45,781 INFO L276 IsEmpty]: Start isEmpty. Operand 632 states and 2012 transitions. [2021-06-05 05:01:45,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-06-05 05:01:45,782 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:01:45,782 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:01:45,982 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3851,89 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:01:45,982 INFO L430 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:01:45,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:01:45,982 INFO L82 PathProgramCache]: Analyzing trace with hash -439184184, now seen corresponding path program 62 times [2021-06-05 05:01:45,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:01:45,982 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608459458] [2021-06-05 05:01:45,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:01:45,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:01:46,092 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:01:46,092 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:01:46,092 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608459458] [2021-06-05 05:01:46,092 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608459458] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:01:46,092 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [358981732] [2021-06-05 05:01:46,092 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:01:46,126 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 05:01:46,126 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:01:46,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-05 05:01:46,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:01:46,339 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:46,340 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:46,340 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:01:46,341 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:46,344 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:46,345 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:46,345 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:01:46,346 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:46,349 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:46,350 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:46,350 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:01:46,350 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:46,354 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:46,354 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:46,355 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:01:46,355 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:46,359 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:01:46,359 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:46,363 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:01:46,364 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:46,367 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:01:46,368 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:46,371 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:46,372 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:46,372 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:01:46,373 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:46,376 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:46,376 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:46,377 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:01:46,377 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:46,381 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:46,381 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:46,382 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:01:46,382 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:46,386 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:46,386 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:46,387 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:01:46,387 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:46,390 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:46,391 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:46,394 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:46,395 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:46,398 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:46,398 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:46,402 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:46,402 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:46,402 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:01:46,403 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:46,406 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:46,407 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:46,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:01:46,408 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:46,411 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:46,411 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:46,415 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:46,415 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:46,416 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:01:46,417 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:46,420 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:46,421 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:46,421 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:01:46,421 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:46,425 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:46,425 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:46,428 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:46,429 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:46,431 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:46,432 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:46,435 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:46,435 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:46,438 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:46,439 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:46,441 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:46,442 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:46,635 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2021-06-05 05:01:46,635 INFO L628 ElimStorePlain]: treesize reduction 36, result has 87.9 percent of original size [2021-06-05 05:01:46,639 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 8 dim-0 vars, and 9 xjuncts. [2021-06-05 05:01:46,640 INFO L247 ElimStorePlain]: Needed 26 recursive calls to eliminate 2 variables, input treesize:1065, output treesize:253 [2021-06-05 05:01:46,932 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:01:46,933 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [358981732] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:01:46,933 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:01:46,933 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2021-06-05 05:01:46,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913907480] [2021-06-05 05:01:46,933 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 05:01:46,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:01:46,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 05:01:46,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-06-05 05:01:46,933 INFO L87 Difference]: Start difference. First operand 632 states and 2012 transitions. Second operand has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 15 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:47,189 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 67 [2021-06-05 05:01:47,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:01:47,311 INFO L93 Difference]: Finished difference Result 720 states and 2254 transitions. [2021-06-05 05:01:47,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-05 05:01:47,311 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 15 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-06-05 05:01:47,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:01:47,312 INFO L225 Difference]: With dead ends: 720 [2021-06-05 05:01:47,312 INFO L226 Difference]: Without dead ends: 699 [2021-06-05 05:01:47,312 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 522.1ms TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2021-06-05 05:01:47,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2021-06-05 05:01:47,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 629. [2021-06-05 05:01:47,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 629 states, 628 states have (on average 3.1894904458598727) internal successors, (2003), 628 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:47,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 2003 transitions. [2021-06-05 05:01:47,318 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 2003 transitions. Word has length 22 [2021-06-05 05:01:47,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:01:47,318 INFO L482 AbstractCegarLoop]: Abstraction has 629 states and 2003 transitions. [2021-06-05 05:01:47,318 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 15 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:47,318 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 2003 transitions. [2021-06-05 05:01:47,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-06-05 05:01:47,319 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:01:47,319 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:01:47,519 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3952,90 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:01:47,520 INFO L430 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:01:47,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:01:47,520 INFO L82 PathProgramCache]: Analyzing trace with hash 1131780344, now seen corresponding path program 63 times [2021-06-05 05:01:47,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:01:47,520 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699470131] [2021-06-05 05:01:47,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:01:47,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:01:47,616 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:01:47,616 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:01:47,616 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699470131] [2021-06-05 05:01:47,616 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699470131] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:01:47,616 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692430125] [2021-06-05 05:01:47,616 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:01:47,651 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-05 05:01:47,651 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:01:47,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-05 05:01:47,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:01:47,882 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:47,882 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:47,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:01:47,883 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:47,887 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:01:47,888 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:47,891 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:47,892 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:47,892 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:01:47,893 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:47,897 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:47,898 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:47,898 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:01:47,899 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:47,903 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:47,903 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:47,907 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:47,907 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:47,911 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:47,912 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:47,912 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:01:47,913 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:47,916 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:47,917 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:47,920 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:01:47,921 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:47,925 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:47,925 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:47,925 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:01:47,926 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:47,930 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:47,930 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:47,934 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:47,934 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:47,937 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:01:47,938 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:47,942 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:47,942 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:47,943 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:01:47,943 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:47,947 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:47,947 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:47,951 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:47,951 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:47,952 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:01:47,953 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:47,956 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:47,957 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:47,960 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:47,961 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:47,964 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:47,964 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:47,967 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:47,968 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:47,971 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:47,972 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:47,975 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:47,975 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:47,978 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:47,979 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:47,982 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:47,982 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:47,985 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:47,985 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:01:47,986 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:48,180 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2021-06-05 05:01:48,180 INFO L628 ElimStorePlain]: treesize reduction 36, result has 87.9 percent of original size [2021-06-05 05:01:48,184 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 8 dim-0 vars, and 9 xjuncts. [2021-06-05 05:01:48,184 INFO L247 ElimStorePlain]: Needed 26 recursive calls to eliminate 2 variables, input treesize:1065, output treesize:253 [2021-06-05 05:01:48,917 INFO L446 ElimStorePlain]: Different costs {1=[char_at_9], 36=[char_at_5]} [2021-06-05 05:01:48,923 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:48,924 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:48,930 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:01:48,931 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:48,937 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:48,938 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:48,938 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:01:48,939 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:48,944 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:48,945 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:48,950 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:48,951 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:48,957 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:48,958 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:48,958 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:01:48,959 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:48,966 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:48,966 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:48,972 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:48,972 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:48,978 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:48,979 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:48,984 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:48,985 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:48,991 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:01:48,992 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:48,998 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:48,998 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:49,004 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:49,005 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:49,005 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:01:49,006 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:49,012 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:49,012 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:49,018 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:49,019 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:49,024 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:49,025 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:49,030 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:49,030 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:49,035 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:49,036 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:49,042 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:49,042 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:49,042 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:01:49,043 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:49,049 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:49,049 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:49,049 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:01:49,050 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:49,055 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:49,056 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:49,061 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:49,061 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:49,066 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:49,067 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:49,073 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:49,073 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:49,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:01:49,074 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:49,079 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:49,080 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:49,085 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:49,086 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:49,091 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:49,092 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:49,092 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:01:49,093 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:49,098 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:49,099 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:49,104 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:49,105 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:49,110 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:49,110 INFO L550 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:49,115 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:49,115 INFO L550 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:49,120 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:49,121 INFO L550 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:49,473 WARN L205 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 93 [2021-06-05 05:01:49,474 INFO L628 ElimStorePlain]: treesize reduction 37, result has 89.8 percent of original size [2021-06-05 05:01:49,480 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:01:49,481 INFO L550 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:49,485 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:01:49,486 INFO L550 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:49,491 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:01:49,491 INFO L550 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:49,496 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:01:49,497 INFO L550 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:49,501 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:01:49,502 INFO L550 ElimStorePlain]: Start of recursive call 38: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:49,506 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:01:49,507 INFO L550 ElimStorePlain]: Start of recursive call 39: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:49,512 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:01:49,513 INFO L550 ElimStorePlain]: Start of recursive call 40: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:49,517 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:01:49,518 INFO L550 ElimStorePlain]: Start of recursive call 41: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:49,522 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:01:49,523 INFO L550 ElimStorePlain]: Start of recursive call 42: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:49,527 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:01:49,528 INFO L550 ElimStorePlain]: Start of recursive call 43: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:49,533 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:01:49,533 INFO L550 ElimStorePlain]: Start of recursive call 44: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:49,537 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:01:49,538 INFO L550 ElimStorePlain]: Start of recursive call 45: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:49,543 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:01:49,544 INFO L550 ElimStorePlain]: Start of recursive call 46: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:49,548 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:01:49,549 INFO L550 ElimStorePlain]: Start of recursive call 47: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:49,679 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2021-06-05 05:01:49,680 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:01:49,683 INFO L550 ElimStorePlain]: Start of recursive call 1: 9 dim-0 vars, 2 dim-1 vars, End of recursive call: and 6 xjuncts. [2021-06-05 05:01:49,683 INFO L247 ElimStorePlain]: Needed 47 recursive calls to eliminate 11 variables, input treesize:1464, output treesize:37 [2021-06-05 05:01:49,751 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:01:49,751 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1692430125] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:01:49,751 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:01:49,751 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-05 05:01:49,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872989942] [2021-06-05 05:01:49,751 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 05:01:49,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:01:49,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 05:01:49,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2021-06-05 05:01:49,752 INFO L87 Difference]: Start difference. First operand 629 states and 2003 transitions. Second operand has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:50,155 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 115 [2021-06-05 05:01:50,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:01:50,312 INFO L93 Difference]: Finished difference Result 1030 states and 3055 transitions. [2021-06-05 05:01:50,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 05:01:50,312 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-06-05 05:01:50,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:01:50,313 INFO L225 Difference]: With dead ends: 1030 [2021-06-05 05:01:50,313 INFO L226 Difference]: Without dead ends: 922 [2021-06-05 05:01:50,313 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 601.8ms TimeCoverageRelationStatistics Valid=146, Invalid=406, Unknown=0, NotChecked=0, Total=552 [2021-06-05 05:01:50,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 922 states. [2021-06-05 05:01:50,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 922 to 578. [2021-06-05 05:01:50,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 578 states, 577 states have (on average 3.164644714038128) internal successors, (1826), 577 states have internal predecessors, (1826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:50,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 1826 transitions. [2021-06-05 05:01:50,320 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 1826 transitions. Word has length 22 [2021-06-05 05:01:50,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:01:50,320 INFO L482 AbstractCegarLoop]: Abstraction has 578 states and 1826 transitions. [2021-06-05 05:01:50,320 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:50,320 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 1826 transitions. [2021-06-05 05:01:50,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-06-05 05:01:50,321 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:01:50,321 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:01:50,521 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4019,91 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:01:50,521 INFO L430 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:01:50,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:01:50,521 INFO L82 PathProgramCache]: Analyzing trace with hash -1028768556, now seen corresponding path program 64 times [2021-06-05 05:01:50,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:01:50,522 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821056735] [2021-06-05 05:01:50,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:01:50,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:01:50,614 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:01:50,614 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:01:50,614 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821056735] [2021-06-05 05:01:50,614 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821056735] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:01:50,614 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804210786] [2021-06-05 05:01:50,614 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:01:50,647 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 05:01:50,647 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:01:50,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-05 05:01:50,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:01:50,896 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:50,896 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:50,897 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:01:50,898 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:50,902 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:50,902 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:50,902 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:01:50,903 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:50,907 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:50,907 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:50,907 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:01:50,908 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:50,912 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:50,912 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:50,913 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:01:50,913 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:50,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:01:50,918 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:50,921 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:50,922 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:50,925 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:50,926 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:50,926 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:01:50,927 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:50,930 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:50,931 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:50,931 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:01:50,932 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:50,935 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:50,936 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:50,936 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:01:50,937 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:50,940 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:50,941 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:50,944 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:01:50,945 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:50,948 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:50,949 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:50,949 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:01:50,950 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:50,953 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:50,953 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:50,957 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:50,957 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:50,963 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:50,963 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:50,963 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:01:50,964 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:50,967 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:50,968 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:50,971 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:50,972 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:50,975 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:50,975 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:50,979 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:50,979 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:50,982 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:01:50,983 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:50,986 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:50,987 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:50,990 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:50,990 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:50,990 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:01:50,991 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:50,994 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:50,994 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:50,997 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:50,998 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:51,000 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:51,001 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:01:51,001 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:51,193 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2021-06-05 05:01:51,194 INFO L628 ElimStorePlain]: treesize reduction 36, result has 87.9 percent of original size [2021-06-05 05:01:51,198 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 8 dim-0 vars, and 9 xjuncts. [2021-06-05 05:01:51,198 INFO L247 ElimStorePlain]: Needed 26 recursive calls to eliminate 2 variables, input treesize:1065, output treesize:253 [2021-06-05 05:01:51,510 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:01:51,511 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1804210786] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:01:51,511 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:01:51,511 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2021-06-05 05:01:51,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366035513] [2021-06-05 05:01:51,511 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 05:01:51,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:01:51,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 05:01:51,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2021-06-05 05:01:51,511 INFO L87 Difference]: Start difference. First operand 578 states and 1826 transitions. Second operand has 15 states, 15 states have (on average 2.066666666666667) internal successors, (31), 15 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:51,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:01:51,732 INFO L93 Difference]: Finished difference Result 653 states and 2036 transitions. [2021-06-05 05:01:51,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-05 05:01:51,732 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.066666666666667) internal successors, (31), 15 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-06-05 05:01:51,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:01:51,733 INFO L225 Difference]: With dead ends: 653 [2021-06-05 05:01:51,733 INFO L226 Difference]: Without dead ends: 635 [2021-06-05 05:01:51,733 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 382.9ms TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-06-05 05:01:51,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2021-06-05 05:01:51,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 561. [2021-06-05 05:01:51,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 560 states have (on average 3.175) internal successors, (1778), 560 states have internal predecessors, (1778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:51,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 1778 transitions. [2021-06-05 05:01:51,738 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 1778 transitions. Word has length 22 [2021-06-05 05:01:51,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:01:51,738 INFO L482 AbstractCegarLoop]: Abstraction has 561 states and 1778 transitions. [2021-06-05 05:01:51,739 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.066666666666667) internal successors, (31), 15 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:51,739 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 1778 transitions. [2021-06-05 05:01:51,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-06-05 05:01:51,739 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:01:51,739 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:01:51,939 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4209 [2021-06-05 05:01:51,940 INFO L430 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:01:51,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:01:51,940 INFO L82 PathProgramCache]: Analyzing trace with hash -1686209490, now seen corresponding path program 65 times [2021-06-05 05:01:51,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:01:51,940 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559041554] [2021-06-05 05:01:51,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:01:51,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:01:52,000 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-06-05 05:01:52,000 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:01:52,000 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559041554] [2021-06-05 05:01:52,000 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559041554] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:01:52,000 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2047182126] [2021-06-05 05:01:52,000 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:01:52,033 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 05:01:52,033 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:01:52,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-05 05:01:52,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:01:52,241 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:52,241 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:52,242 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:01:52,242 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:52,245 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:01:52,245 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:52,248 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:52,249 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:52,249 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:01:52,250 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:52,252 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:52,253 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:52,253 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:01:52,253 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:52,256 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:52,256 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:52,258 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:01:52,259 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:52,261 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:52,262 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:52,264 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:52,264 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:01:52,265 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:52,308 INFO L628 ElimStorePlain]: treesize reduction 17, result has 77.9 percent of original size [2021-06-05 05:01:52,309 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 3 xjuncts. [2021-06-05 05:01:52,309 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 2 variables, input treesize:279, output treesize:60 [2021-06-05 05:01:52,432 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:01:52,433 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2047182126] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:01:52,433 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:01:52,433 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 15 [2021-06-05 05:01:52,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281327851] [2021-06-05 05:01:52,433 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 05:01:52,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:01:52,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 05:01:52,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2021-06-05 05:01:52,433 INFO L87 Difference]: Start difference. First operand 561 states and 1778 transitions. Second operand has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:52,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:01:52,924 INFO L93 Difference]: Finished difference Result 761 states and 2314 transitions. [2021-06-05 05:01:52,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-05 05:01:52,925 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-06-05 05:01:52,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:01:52,925 INFO L225 Difference]: With dead ends: 761 [2021-06-05 05:01:52,925 INFO L226 Difference]: Without dead ends: 628 [2021-06-05 05:01:52,926 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 444.4ms TimeCoverageRelationStatistics Valid=96, Invalid=456, Unknown=0, NotChecked=0, Total=552 [2021-06-05 05:01:52,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2021-06-05 05:01:52,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 535. [2021-06-05 05:01:52,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 535 states, 534 states have (on average 3.155430711610487) internal successors, (1685), 534 states have internal predecessors, (1685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:52,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 1685 transitions. [2021-06-05 05:01:52,931 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 1685 transitions. Word has length 22 [2021-06-05 05:01:52,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:01:52,931 INFO L482 AbstractCegarLoop]: Abstraction has 535 states and 1685 transitions. [2021-06-05 05:01:52,931 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:52,931 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 1685 transitions. [2021-06-05 05:01:52,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-06-05 05:01:52,932 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:01:52,932 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:01:53,132 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4290,93 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:01:53,132 INFO L430 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:01:53,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:01:53,132 INFO L82 PathProgramCache]: Analyzing trace with hash 1353222392, now seen corresponding path program 66 times [2021-06-05 05:01:53,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:01:53,132 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408937657] [2021-06-05 05:01:53,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:01:53,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:01:53,208 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:01:53,208 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:01:53,208 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408937657] [2021-06-05 05:01:53,208 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408937657] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:01:53,208 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617968135] [2021-06-05 05:01:53,208 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:01:53,249 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-06-05 05:01:53,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:01:53,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-05 05:01:53,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:01:53,736 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:53,736 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:53,737 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:01:53,737 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:53,740 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:53,741 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:53,741 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:01:53,741 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:53,744 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:53,745 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:53,745 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:01:53,746 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:53,748 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:53,749 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:53,752 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:53,752 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:53,753 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:01:53,753 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:53,756 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:53,757 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:53,759 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:53,760 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:53,762 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:53,763 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:53,766 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:53,766 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:53,766 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:01:53,767 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:53,769 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:53,770 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:53,772 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:53,773 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:53,775 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:53,776 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:53,778 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:53,779 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:53,781 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:53,781 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:53,784 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:53,784 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:53,786 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:53,787 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:53,789 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:53,790 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:53,792 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:53,792 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:01:53,793 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:53,829 INFO L628 ElimStorePlain]: treesize reduction 70, result has 35.8 percent of original size [2021-06-05 05:01:53,831 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:01:53,832 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:53,833 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:53,834 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:53,838 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:01:53,839 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:01:53,839 INFO L247 ElimStorePlain]: Needed 21 recursive calls to eliminate 3 variables, input treesize:665, output treesize:6 [2021-06-05 05:01:53,852 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:01:53,852 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [617968135] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:01:53,852 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:01:53,852 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-05 05:01:53,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619067196] [2021-06-05 05:01:53,852 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 05:01:53,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:01:53,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 05:01:53,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2021-06-05 05:01:53,853 INFO L87 Difference]: Start difference. First operand 535 states and 1685 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:54,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:01:54,013 INFO L93 Difference]: Finished difference Result 729 states and 2260 transitions. [2021-06-05 05:01:54,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-05 05:01:54,013 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-06-05 05:01:54,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:01:54,014 INFO L225 Difference]: With dead ends: 729 [2021-06-05 05:01:54,014 INFO L226 Difference]: Without dead ends: 662 [2021-06-05 05:01:54,014 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 215.1ms TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2021-06-05 05:01:54,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2021-06-05 05:01:54,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 520. [2021-06-05 05:01:54,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 520 states, 519 states have (on average 3.159922928709056) internal successors, (1640), 519 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:54,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 1640 transitions. [2021-06-05 05:01:54,019 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 1640 transitions. Word has length 22 [2021-06-05 05:01:54,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:01:54,019 INFO L482 AbstractCegarLoop]: Abstraction has 520 states and 1640 transitions. [2021-06-05 05:01:54,019 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:54,019 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 1640 transitions. [2021-06-05 05:01:54,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-06-05 05:01:54,020 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:01:54,020 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:01:54,220 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4333,94 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:01:54,221 INFO L430 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:01:54,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:01:54,221 INFO L82 PathProgramCache]: Analyzing trace with hash -1018575680, now seen corresponding path program 67 times [2021-06-05 05:01:54,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:01:54,221 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522311973] [2021-06-05 05:01:54,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:01:54,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:01:54,283 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-06-05 05:01:54,284 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:01:54,284 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522311973] [2021-06-05 05:01:54,284 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522311973] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:01:54,284 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129847788] [2021-06-05 05:01:54,284 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:01:54,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:01:54,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-05 05:01:54,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:01:55,086 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:55,087 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:55,087 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:01:55,087 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:55,091 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:55,091 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:55,092 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:01:55,092 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:55,096 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:55,096 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:55,096 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:01:55,097 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:55,100 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:55,101 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:55,104 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:55,105 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:55,105 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:01:55,106 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:55,109 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:55,109 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:55,112 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:55,113 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:55,116 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:55,116 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:55,117 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:01:55,117 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:55,120 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:55,121 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:55,124 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:55,124 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:55,128 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:55,128 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:55,128 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:01:55,129 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:55,132 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:55,133 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:55,136 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:55,136 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:55,139 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:55,140 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:55,142 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:55,143 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:55,146 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:55,146 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:55,149 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:55,150 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:55,152 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:55,153 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:55,156 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:55,156 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:55,159 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:55,160 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:55,160 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:01:55,160 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:55,163 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:55,164 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:55,166 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:55,167 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:55,169 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:55,170 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:55,173 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:55,173 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:55,176 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:55,176 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:55,179 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:55,179 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:55,182 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:55,182 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:55,182 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:01:55,183 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:55,185 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:55,186 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:55,241 INFO L628 ElimStorePlain]: treesize reduction 90, result has 41.9 percent of original size [2021-06-05 05:01:55,244 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:01:55,245 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:55,246 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:55,247 INFO L550 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:55,248 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:01:55,249 INFO L550 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:55,274 INFO L628 ElimStorePlain]: treesize reduction 1, result has 96.6 percent of original size [2021-06-05 05:01:55,275 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-05 05:01:55,275 INFO L247 ElimStorePlain]: Needed 32 recursive calls to eliminate 3 variables, input treesize:993, output treesize:12 [2021-06-05 05:01:55,305 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:01:55,305 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1129847788] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:01:55,305 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:01:55,305 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 15 [2021-06-05 05:01:55,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667458707] [2021-06-05 05:01:55,306 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 05:01:55,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:01:55,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 05:01:55,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2021-06-05 05:01:55,306 INFO L87 Difference]: Start difference. First operand 520 states and 1640 transitions. Second operand has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:55,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:01:55,573 INFO L93 Difference]: Finished difference Result 933 states and 2852 transitions. [2021-06-05 05:01:55,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-05 05:01:55,573 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-06-05 05:01:55,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:01:55,574 INFO L225 Difference]: With dead ends: 933 [2021-06-05 05:01:55,574 INFO L226 Difference]: Without dead ends: 837 [2021-06-05 05:01:55,574 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 287.5ms TimeCoverageRelationStatistics Valid=100, Invalid=320, Unknown=0, NotChecked=0, Total=420 [2021-06-05 05:01:55,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 837 states. [2021-06-05 05:01:55,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 837 to 577. [2021-06-05 05:01:55,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 576 states have (on average 3.1927083333333335) internal successors, (1839), 576 states have internal predecessors, (1839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:55,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 1839 transitions. [2021-06-05 05:01:55,581 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 1839 transitions. Word has length 22 [2021-06-05 05:01:55,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:01:55,581 INFO L482 AbstractCegarLoop]: Abstraction has 577 states and 1839 transitions. [2021-06-05 05:01:55,581 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:55,581 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 1839 transitions. [2021-06-05 05:01:55,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-06-05 05:01:55,582 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:01:55,582 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:01:55,782 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4479,95 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:01:55,782 INFO L430 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:01:55,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:01:55,782 INFO L82 PathProgramCache]: Analyzing trace with hash 351919130, now seen corresponding path program 68 times [2021-06-05 05:01:55,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:01:55,782 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473830628] [2021-06-05 05:01:55,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:01:55,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:01:55,884 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:01:55,884 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:01:55,884 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473830628] [2021-06-05 05:01:55,884 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473830628] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:01:55,884 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989353808] [2021-06-05 05:01:55,885 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:01:55,918 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 05:01:55,918 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:01:55,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-05 05:01:55,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:01:56,554 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:56,555 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:56,558 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:56,558 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:56,559 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:01:56,560 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:56,563 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:56,563 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:56,564 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:01:56,564 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:56,568 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:56,568 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:56,568 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:01:56,569 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:56,573 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:56,573 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:56,573 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:01:56,574 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:56,578 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:56,578 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:56,578 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:01:56,579 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:56,582 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:56,583 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:56,586 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:56,587 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:56,590 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:56,591 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:56,594 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:56,594 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:56,594 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:01:56,595 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:56,598 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:56,599 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:56,602 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:56,602 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:56,605 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:56,606 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:56,606 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:01:56,607 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:56,610 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:56,610 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:56,613 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:56,614 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:56,616 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:56,617 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:56,620 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:56,620 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:56,623 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:56,624 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:56,626 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:56,627 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:56,630 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:56,630 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:56,633 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:56,633 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:56,636 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:56,637 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:56,639 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:56,640 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:56,640 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:01:56,641 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:56,643 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:56,644 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:56,644 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:01:56,644 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:56,647 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:56,647 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:56,650 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:56,650 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:56,653 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:56,654 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:56,656 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:56,656 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:56,713 INFO L628 ElimStorePlain]: treesize reduction 110, result has 37.1 percent of original size [2021-06-05 05:01:56,715 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:01:56,716 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:56,718 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:01:56,719 INFO L550 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:56,720 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:56,721 INFO L550 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:56,746 INFO L628 ElimStorePlain]: treesize reduction 1, result has 96.6 percent of original size [2021-06-05 05:01:56,747 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-05 05:01:56,747 INFO L247 ElimStorePlain]: Needed 32 recursive calls to eliminate 3 variables, input treesize:993, output treesize:12 [2021-06-05 05:01:56,775 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:01:56,775 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1989353808] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:01:56,775 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:01:56,776 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-05 05:01:56,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080873468] [2021-06-05 05:01:56,776 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 05:01:56,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:01:56,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 05:01:56,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=151, Unknown=0, NotChecked=0, Total=240 [2021-06-05 05:01:56,776 INFO L87 Difference]: Start difference. First operand 577 states and 1839 transitions. Second operand has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:56,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:01:56,952 INFO L93 Difference]: Finished difference Result 856 states and 2632 transitions. [2021-06-05 05:01:56,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 05:01:56,952 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-06-05 05:01:56,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:01:56,953 INFO L225 Difference]: With dead ends: 856 [2021-06-05 05:01:56,953 INFO L226 Difference]: Without dead ends: 789 [2021-06-05 05:01:56,953 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 278.8ms TimeCoverageRelationStatistics Valid=118, Invalid=224, Unknown=0, NotChecked=0, Total=342 [2021-06-05 05:01:56,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 789 states. [2021-06-05 05:01:56,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 789 to 503. [2021-06-05 05:01:56,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 503 states, 502 states have (on average 3.147410358565737) internal successors, (1580), 502 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:56,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 1580 transitions. [2021-06-05 05:01:56,959 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 1580 transitions. Word has length 22 [2021-06-05 05:01:56,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:01:56,959 INFO L482 AbstractCegarLoop]: Abstraction has 503 states and 1580 transitions. [2021-06-05 05:01:56,959 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:56,959 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 1580 transitions. [2021-06-05 05:01:56,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-06-05 05:01:56,960 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:01:56,960 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:01:57,160 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4709 [2021-06-05 05:01:57,160 INFO L430 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:01:57,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:01:57,160 INFO L82 PathProgramCache]: Analyzing trace with hash -777426886, now seen corresponding path program 69 times [2021-06-05 05:01:57,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:01:57,161 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223663101] [2021-06-05 05:01:57,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:01:57,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:01:57,275 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:01:57,276 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:01:57,276 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223663101] [2021-06-05 05:01:57,276 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223663101] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:01:57,276 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969575646] [2021-06-05 05:01:57,276 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:01:57,310 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-06-05 05:01:57,310 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:01:57,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-05 05:01:57,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:01:57,558 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:57,559 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:57,559 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:01:57,560 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:57,564 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:57,565 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:57,565 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:01:57,566 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:57,570 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:57,571 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:57,571 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:01:57,572 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:57,576 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:57,576 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:57,577 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:01:57,577 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:57,582 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:57,582 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:57,583 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:01:57,584 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:57,587 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:57,588 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:57,588 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:01:57,589 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:57,592 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:57,593 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:57,595 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:57,596 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:57,599 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:57,599 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:57,599 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:01:57,600 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:57,603 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:57,603 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:57,604 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:01:57,605 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:57,607 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:57,608 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:57,611 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:57,612 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:57,612 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:01:57,612 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:57,615 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:57,616 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:57,619 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:57,619 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:57,619 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:01:57,620 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:57,624 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:57,624 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:57,625 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:01:57,626 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:57,628 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:57,629 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:57,632 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:57,632 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:57,633 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:01:57,633 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:57,636 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:57,636 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:57,638 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:57,639 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:57,642 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:57,642 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:01:57,642 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:57,711 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:01:57,714 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 6 dim-0 vars, and 6 xjuncts. [2021-06-05 05:01:57,714 INFO L247 ElimStorePlain]: Needed 21 recursive calls to eliminate 2 variables, input treesize:877, output treesize:193 [2021-06-05 05:01:57,907 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:01:57,907 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1969575646] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:01:57,907 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:01:57,908 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2021-06-05 05:01:57,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177552168] [2021-06-05 05:01:57,908 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 05:01:57,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:01:57,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 05:01:57,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-06-05 05:01:57,908 INFO L87 Difference]: Start difference. First operand 503 states and 1580 transitions. Second operand has 15 states, 15 states have (on average 2.066666666666667) internal successors, (31), 15 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:58,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:01:58,128 INFO L93 Difference]: Finished difference Result 536 states and 1663 transitions. [2021-06-05 05:01:58,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 05:01:58,129 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.066666666666667) internal successors, (31), 15 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-06-05 05:01:58,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:01:58,129 INFO L225 Difference]: With dead ends: 536 [2021-06-05 05:01:58,129 INFO L226 Difference]: Without dead ends: 518 [2021-06-05 05:01:58,130 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 318.1ms TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-06-05 05:01:58,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2021-06-05 05:01:58,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 508. [2021-06-05 05:01:58,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 507 states have (on average 3.143984220907298) internal successors, (1594), 507 states have internal predecessors, (1594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:58,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 1594 transitions. [2021-06-05 05:01:58,134 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 1594 transitions. Word has length 22 [2021-06-05 05:01:58,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:01:58,135 INFO L482 AbstractCegarLoop]: Abstraction has 508 states and 1594 transitions. [2021-06-05 05:01:58,135 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.066666666666667) internal successors, (31), 15 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:58,135 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 1594 transitions. [2021-06-05 05:01:58,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-06-05 05:01:58,135 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:01:58,135 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:01:58,336 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4900 [2021-06-05 05:01:58,336 INFO L430 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:01:58,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:01:58,336 INFO L82 PathProgramCache]: Analyzing trace with hash -1241760736, now seen corresponding path program 70 times [2021-06-05 05:01:58,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:01:58,336 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111735641] [2021-06-05 05:01:58,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:01:58,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:01:58,440 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:01:58,440 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:01:58,440 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111735641] [2021-06-05 05:01:58,440 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111735641] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:01:58,440 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222856603] [2021-06-05 05:01:58,440 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:01:58,487 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 05:01:58,487 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:01:58,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-05 05:01:58,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:01:58,690 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:58,690 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:58,690 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:01:58,691 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:58,694 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:58,695 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:58,695 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:01:58,695 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:58,699 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:58,699 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:58,699 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:01:58,700 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:58,704 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:58,704 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:58,704 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:01:58,705 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:58,708 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:58,709 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:58,709 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:01:58,710 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:58,713 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:58,713 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:58,717 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:58,717 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:58,717 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:01:58,718 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:58,721 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:58,722 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:58,722 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:01:58,723 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:58,726 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:58,726 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:58,727 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:01:58,727 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:58,730 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:58,731 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:58,734 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:58,734 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:58,737 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:58,738 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:58,741 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:58,741 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:58,744 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:58,745 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:58,748 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:58,748 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:58,748 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:01:58,749 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:58,752 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:58,752 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:58,752 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:01:58,753 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:58,755 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:58,756 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:58,758 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:58,759 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:58,761 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:58,762 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:58,765 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:58,766 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:58,853 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:01:58,856 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 6 dim-0 vars, and 6 xjuncts. [2021-06-05 05:01:58,856 INFO L247 ElimStorePlain]: Needed 21 recursive calls to eliminate 2 variables, input treesize:877, output treesize:193 [2021-06-05 05:01:59,360 INFO L446 ElimStorePlain]: Different costs {1=[char_at_9], 21=[char_at_5]} [2021-06-05 05:01:59,365 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:59,366 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:59,366 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:01:59,367 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:59,372 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:59,372 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:59,372 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:01:59,373 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:59,377 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:59,378 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:59,382 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:59,383 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:59,387 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:59,388 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:59,392 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:59,393 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:59,393 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:01:59,394 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:59,398 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:59,399 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:59,403 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:59,404 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:59,408 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:59,409 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:59,413 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:59,414 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:59,418 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:59,418 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:59,422 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:59,423 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:59,427 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:59,428 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:59,432 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:59,432 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:59,436 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:59,437 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:59,441 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:59,441 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:59,445 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:59,446 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:59,449 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:59,450 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:59,454 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:59,455 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:59,458 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:59,459 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:59,463 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:59,463 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:59,463 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:01:59,464 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:59,468 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:59,469 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:59,473 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:59,473 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:59,473 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:01:59,474 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:59,478 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:59,478 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:59,693 WARN L205 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 73 [2021-06-05 05:01:59,694 INFO L628 ElimStorePlain]: treesize reduction 20, result has 92.1 percent of original size [2021-06-05 05:01:59,698 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:01:59,699 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:59,703 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:01:59,703 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:59,707 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:01:59,708 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:59,711 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:01:59,712 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:59,718 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:01:59,719 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:59,724 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:01:59,725 INFO L550 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:59,729 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:01:59,730 INFO L550 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:59,734 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:01:59,735 INFO L550 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:59,738 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:01:59,739 INFO L550 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:59,742 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:01:59,743 INFO L550 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:59,826 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:01:59,829 INFO L550 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-06-05 05:01:59,829 INFO L247 ElimStorePlain]: Needed 35 recursive calls to eliminate 9 variables, input treesize:1141, output treesize:20 [2021-06-05 05:01:59,870 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:01:59,870 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1222856603] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:01:59,870 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:01:59,870 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-05 05:01:59,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415632539] [2021-06-05 05:01:59,870 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 05:01:59,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:01:59,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 05:01:59,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2021-06-05 05:01:59,871 INFO L87 Difference]: Start difference. First operand 508 states and 1594 transitions. Second operand has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:00,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:02:00,221 INFO L93 Difference]: Finished difference Result 938 states and 2813 transitions. [2021-06-05 05:02:00,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-05 05:02:00,221 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-06-05 05:02:00,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:02:00,223 INFO L225 Difference]: With dead ends: 938 [2021-06-05 05:02:00,223 INFO L226 Difference]: Without dead ends: 842 [2021-06-05 05:02:00,223 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 431.3ms TimeCoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2021-06-05 05:02:00,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2021-06-05 05:02:00,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 575. [2021-06-05 05:02:00,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 574 states have (on average 3.1933797909407664) internal successors, (1833), 574 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:00,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 1833 transitions. [2021-06-05 05:02:00,230 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 1833 transitions. Word has length 22 [2021-06-05 05:02:00,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:02:00,230 INFO L482 AbstractCegarLoop]: Abstraction has 575 states and 1833 transitions. [2021-06-05 05:02:00,230 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:00,230 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 1833 transitions. [2021-06-05 05:02:00,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-06-05 05:02:00,230 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:02:00,231 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:02:00,431 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 98 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4980 [2021-06-05 05:02:00,431 INFO L430 AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:02:00,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:02:00,431 INFO L82 PathProgramCache]: Analyzing trace with hash 128734074, now seen corresponding path program 71 times [2021-06-05 05:02:00,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:02:00,431 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880553072] [2021-06-05 05:02:00,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:02:00,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:02:00,707 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:02:00,707 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:02:00,707 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880553072] [2021-06-05 05:02:00,707 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880553072] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:02:00,707 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747155307] [2021-06-05 05:02:00,707 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:02:00,741 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 05:02:00,741 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:02:00,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-05 05:02:00,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:02:00,899 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:02:00,900 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1747155307] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:02:00,900 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:02:00,900 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 21 [2021-06-05 05:02:00,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836759081] [2021-06-05 05:02:00,900 INFO L462 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-06-05 05:02:00,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:02:00,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-06-05 05:02:00,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2021-06-05 05:02:00,900 INFO L87 Difference]: Start difference. First operand 575 states and 1833 transitions. Second operand has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 21 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:01,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:02:01,747 INFO L93 Difference]: Finished difference Result 764 states and 2402 transitions. [2021-06-05 05:02:01,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-05 05:02:01,747 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 21 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-06-05 05:02:01,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:02:01,748 INFO L225 Difference]: With dead ends: 764 [2021-06-05 05:02:01,748 INFO L226 Difference]: Without dead ends: 764 [2021-06-05 05:02:01,748 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 887.7ms TimeCoverageRelationStatistics Valid=251, Invalid=1009, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 05:02:01,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2021-06-05 05:02:01,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 564. [2021-06-05 05:02:01,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 563 states have (on average 3.1989342806394316) internal successors, (1801), 563 states have internal predecessors, (1801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:01,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 1801 transitions. [2021-06-05 05:02:01,754 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 1801 transitions. Word has length 22 [2021-06-05 05:02:01,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:02:01,754 INFO L482 AbstractCegarLoop]: Abstraction has 564 states and 1801 transitions. [2021-06-05 05:02:01,754 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 21 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:01,754 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 1801 transitions. [2021-06-05 05:02:01,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-06-05 05:02:01,755 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:02:01,755 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:02:01,955 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5125,99 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:02:01,955 INFO L430 AbstractCegarLoop]: === Iteration 169 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:02:01,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:02:01,956 INFO L82 PathProgramCache]: Analyzing trace with hash -1102061538, now seen corresponding path program 72 times [2021-06-05 05:02:01,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:02:01,956 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963835512] [2021-06-05 05:02:01,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:02:01,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:02:02,244 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:02:02,245 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:02:02,245 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963835512] [2021-06-05 05:02:02,245 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963835512] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:02:02,245 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29335369] [2021-06-05 05:02:02,245 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:02:02,278 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 05:02:02,278 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:02:02,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-05 05:02:02,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:02:03,048 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_119, v_prenex_120, v_prenex_121], 1=[char_at_1, v_prenex_122, v_prenex_124, v_prenex_126]} [2021-06-05 05:02:03,056 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:03,058 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:03,064 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:03,065 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:03,652 WARN L205 SmtUtils]: Spent 586.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 81 [2021-06-05 05:02:03,652 INFO L628 ElimStorePlain]: treesize reduction 646, result has 49.0 percent of original size [2021-06-05 05:02:03,652 INFO L518 ElimStorePlain]: Eliminatee v_prenex_120 vanished before elimination [2021-06-05 05:02:03,657 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:02:03,658 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:04,145 WARN L205 SmtUtils]: Spent 486.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 74 [2021-06-05 05:02:04,145 INFO L628 ElimStorePlain]: treesize reduction 36, result has 94.1 percent of original size [2021-06-05 05:02:04,150 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:04,151 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:04,155 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:04,156 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:04,160 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:04,161 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:04,387 WARN L205 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2021-06-05 05:02:04,387 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:02:04,391 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:04,392 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:04,396 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:04,397 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:04,401 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:04,402 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:04,626 WARN L205 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2021-06-05 05:02:04,626 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:02:04,631 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:04,632 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:04,636 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:04,637 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:04,641 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:04,641 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:04,855 WARN L205 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2021-06-05 05:02:04,856 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:02:04,860 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:04,861 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:04,865 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:04,866 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:04,869 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:04,870 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:05,078 WARN L205 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2021-06-05 05:02:05,078 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:02:05,111 INFO L550 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 7 dim-1 vars, End of recursive call: 26 dim-0 vars, and 15 xjuncts. [2021-06-05 05:02:05,111 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 12 variables, input treesize:1277, output treesize:505 [2021-06-05 05:02:05,385 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 125 [2021-06-05 05:02:05,672 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:02:05,672 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [29335369] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:02:05,672 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:02:05,672 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 18 [2021-06-05 05:02:05,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204467617] [2021-06-05 05:02:05,672 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 05:02:05,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:02:05,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 05:02:05,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2021-06-05 05:02:05,673 INFO L87 Difference]: Start difference. First operand 564 states and 1801 transitions. Second operand has 18 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 18 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:06,335 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 41 [2021-06-05 05:02:06,612 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 139 [2021-06-05 05:02:06,797 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 80 [2021-06-05 05:02:07,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:02:07,180 INFO L93 Difference]: Finished difference Result 834 states and 2520 transitions. [2021-06-05 05:02:07,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-05 05:02:07,180 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 18 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-06-05 05:02:07,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:02:07,181 INFO L225 Difference]: With dead ends: 834 [2021-06-05 05:02:07,181 INFO L226 Difference]: Without dead ends: 792 [2021-06-05 05:02:07,182 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 17 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 1653.7ms TimeCoverageRelationStatistics Valid=127, Invalid=865, Unknown=0, NotChecked=0, Total=992 [2021-06-05 05:02:07,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 792 states. [2021-06-05 05:02:07,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 792 to 593. [2021-06-05 05:02:07,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 592 states have (on average 3.185810810810811) internal successors, (1886), 592 states have internal predecessors, (1886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:07,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 1886 transitions. [2021-06-05 05:02:07,188 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 1886 transitions. Word has length 22 [2021-06-05 05:02:07,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:02:07,188 INFO L482 AbstractCegarLoop]: Abstraction has 593 states and 1886 transitions. [2021-06-05 05:02:07,188 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 18 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:07,188 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 1886 transitions. [2021-06-05 05:02:07,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-06-05 05:02:07,189 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:02:07,189 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:02:07,389 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5129 [2021-06-05 05:02:07,389 INFO L430 AbstractCegarLoop]: === Iteration 170 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:02:07,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:02:07,390 INFO L82 PathProgramCache]: Analyzing trace with hash -1101322066, now seen corresponding path program 73 times [2021-06-05 05:02:07,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:02:07,390 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810467127] [2021-06-05 05:02:07,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:02:07,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:02:07,464 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:02:07,465 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:02:07,465 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810467127] [2021-06-05 05:02:07,465 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810467127] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:02:07,465 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471574569] [2021-06-05 05:02:07,465 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:02:07,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:02:07,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-05 05:02:07,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:02:07,721 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:02:07,721 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1471574569] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:02:07,721 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:02:07,721 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-06-05 05:02:07,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336401561] [2021-06-05 05:02:07,721 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 05:02:07,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:02:07,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 05:02:07,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-06-05 05:02:07,722 INFO L87 Difference]: Start difference. First operand 593 states and 1886 transitions. Second operand has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:07,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:02:07,880 INFO L93 Difference]: Finished difference Result 649 states and 2017 transitions. [2021-06-05 05:02:07,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 05:02:07,880 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-06-05 05:02:07,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:02:07,881 INFO L225 Difference]: With dead ends: 649 [2021-06-05 05:02:07,881 INFO L226 Difference]: Without dead ends: 622 [2021-06-05 05:02:07,881 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 233.2ms TimeCoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2021-06-05 05:02:07,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2021-06-05 05:02:07,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 593. [2021-06-05 05:02:07,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 592 states have (on average 3.175675675675676) internal successors, (1880), 592 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:07,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 1880 transitions. [2021-06-05 05:02:07,887 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 1880 transitions. Word has length 22 [2021-06-05 05:02:07,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:02:07,887 INFO L482 AbstractCegarLoop]: Abstraction has 593 states and 1880 transitions. [2021-06-05 05:02:07,887 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:07,887 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 1880 transitions. [2021-06-05 05:02:07,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-06-05 05:02:07,888 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:02:07,888 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:02:08,088 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5351 [2021-06-05 05:02:08,088 INFO L430 AbstractCegarLoop]: === Iteration 171 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:02:08,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:02:08,089 INFO L82 PathProgramCache]: Analyzing trace with hash 469642462, now seen corresponding path program 74 times [2021-06-05 05:02:08,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:02:08,089 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736984229] [2021-06-05 05:02:08,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:02:08,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:02:08,167 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:02:08,167 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:02:08,167 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736984229] [2021-06-05 05:02:08,168 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736984229] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:02:08,168 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [446428464] [2021-06-05 05:02:08,168 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:02:08,201 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 05:02:08,201 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:02:08,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-05 05:02:08,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:02:09,011 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:02:09,011 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [446428464] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:02:09,011 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:02:09,011 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-06-05 05:02:09,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584404804] [2021-06-05 05:02:09,011 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 05:02:09,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:02:09,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 05:02:09,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=113, Unknown=0, NotChecked=0, Total=182 [2021-06-05 05:02:09,012 INFO L87 Difference]: Start difference. First operand 593 states and 1880 transitions. Second operand has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 14 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:09,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:02:09,099 INFO L93 Difference]: Finished difference Result 750 states and 2265 transitions. [2021-06-05 05:02:09,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 05:02:09,100 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 14 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-06-05 05:02:09,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:02:09,101 INFO L225 Difference]: With dead ends: 750 [2021-06-05 05:02:09,101 INFO L226 Difference]: Without dead ends: 740 [2021-06-05 05:02:09,101 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 148.2ms TimeCoverageRelationStatistics Valid=77, Invalid=133, Unknown=0, NotChecked=0, Total=210 [2021-06-05 05:02:09,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 740 states. [2021-06-05 05:02:09,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 740 to 606. [2021-06-05 05:02:09,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 606 states, 605 states have (on average 3.1917355371900826) internal successors, (1931), 605 states have internal predecessors, (1931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:09,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 1931 transitions. [2021-06-05 05:02:09,108 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 1931 transitions. Word has length 22 [2021-06-05 05:02:09,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:02:09,109 INFO L482 AbstractCegarLoop]: Abstraction has 606 states and 1931 transitions. [2021-06-05 05:02:09,109 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 14 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:09,109 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 1931 transitions. [2021-06-05 05:02:09,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-06-05 05:02:09,110 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:02:09,110 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:02:09,333 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5396 [2021-06-05 05:02:09,333 INFO L430 AbstractCegarLoop]: === Iteration 172 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:02:09,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:02:09,333 INFO L82 PathProgramCache]: Analyzing trace with hash -1304539490, now seen corresponding path program 75 times [2021-06-05 05:02:09,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:02:09,334 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383111264] [2021-06-05 05:02:09,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:02:09,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:02:09,437 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:02:09,437 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:02:09,437 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383111264] [2021-06-05 05:02:09,437 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383111264] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:02:09,437 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857060573] [2021-06-05 05:02:09,437 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:02:09,471 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 05:02:09,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:02:09,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-05 05:02:09,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:02:09,702 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:09,702 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:09,702 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:02:09,703 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:09,707 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:09,707 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:09,707 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:02:09,708 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:09,712 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:09,712 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:09,712 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:02:09,713 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:09,716 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:09,717 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:09,721 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:09,721 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:09,725 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:09,725 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:09,726 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:02:09,726 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:09,730 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:09,730 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:09,731 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:02:09,731 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:09,735 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:09,736 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:09,736 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:02:09,736 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:09,740 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:09,740 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:09,740 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:02:09,741 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:09,745 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:09,745 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:09,745 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:02:09,746 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:09,749 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:09,750 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:09,753 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:02:09,754 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:09,758 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:09,758 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:09,758 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:02:09,759 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:09,763 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:09,763 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:09,767 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:09,767 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:09,771 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:09,771 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:09,774 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:09,775 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:09,780 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:09,781 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:09,785 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:09,786 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:09,791 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:09,792 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:09,796 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:09,797 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:09,797 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:02:09,798 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:09,802 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:09,803 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:09,807 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:09,808 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:09,808 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:02:09,809 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:09,813 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:09,813 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:09,817 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:09,818 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:10,017 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2021-06-05 05:02:10,018 INFO L628 ElimStorePlain]: treesize reduction 36, result has 87.9 percent of original size [2021-06-05 05:02:10,022 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 8 dim-0 vars, and 9 xjuncts. [2021-06-05 05:02:10,022 INFO L247 ElimStorePlain]: Needed 26 recursive calls to eliminate 2 variables, input treesize:1065, output treesize:253 [2021-06-05 05:02:10,963 INFO L446 ElimStorePlain]: Different costs {1=[char_at_9], 36=[char_at_5]} [2021-06-05 05:02:10,969 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:10,970 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:10,975 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:10,976 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:10,982 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:10,983 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:10,988 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:10,989 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:10,995 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:10,995 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:10,995 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:02:10,996 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:11,002 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:11,002 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:11,008 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:11,009 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:11,014 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:11,015 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:11,020 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:11,021 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:11,026 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:11,027 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:11,033 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:11,033 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:11,033 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:02:11,034 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:11,040 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:11,040 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:11,041 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:02:11,042 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:11,047 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:11,048 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:11,053 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:11,054 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:11,059 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:11,060 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:11,065 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:11,066 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:11,071 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:11,072 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:11,077 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:11,077 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:11,083 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:11,083 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:11,089 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:11,089 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:11,094 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:11,095 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:11,100 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:11,101 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:11,106 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:11,106 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:11,112 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:11,112 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:11,112 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:02:11,113 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:11,118 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:11,119 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:11,119 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:02:11,120 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:11,125 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:11,126 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:11,131 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:11,131 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:11,132 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:02:11,133 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:11,138 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:11,138 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:11,143 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:11,144 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:11,148 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:11,149 INFO L550 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:11,154 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:11,154 INFO L550 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:11,159 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:11,160 INFO L550 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:11,500 WARN L205 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 94 [2021-06-05 05:02:11,500 INFO L628 ElimStorePlain]: treesize reduction 37, result has 89.8 percent of original size [2021-06-05 05:02:11,506 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:11,507 INFO L550 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:11,511 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:02:11,512 INFO L550 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:11,516 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:11,517 INFO L550 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:11,522 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:11,522 INFO L550 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:11,527 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:11,528 INFO L550 ElimStorePlain]: Start of recursive call 38: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:11,532 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:11,533 INFO L550 ElimStorePlain]: Start of recursive call 39: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:11,537 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:02:11,538 INFO L550 ElimStorePlain]: Start of recursive call 40: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:11,542 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:11,543 INFO L550 ElimStorePlain]: Start of recursive call 41: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:11,548 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:11,548 INFO L550 ElimStorePlain]: Start of recursive call 42: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:11,553 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:11,554 INFO L550 ElimStorePlain]: Start of recursive call 43: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:11,558 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:11,559 INFO L550 ElimStorePlain]: Start of recursive call 44: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:11,563 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:11,564 INFO L550 ElimStorePlain]: Start of recursive call 45: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:11,568 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:11,569 INFO L550 ElimStorePlain]: Start of recursive call 46: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:11,573 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:11,574 INFO L550 ElimStorePlain]: Start of recursive call 47: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:11,713 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2021-06-05 05:02:11,714 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:02:11,717 INFO L550 ElimStorePlain]: Start of recursive call 1: 9 dim-0 vars, 2 dim-1 vars, End of recursive call: and 6 xjuncts. [2021-06-05 05:02:11,717 INFO L247 ElimStorePlain]: Needed 47 recursive calls to eliminate 11 variables, input treesize:1464, output treesize:37 [2021-06-05 05:02:11,777 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:02:11,777 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1857060573] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:02:11,777 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:02:11,777 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2021-06-05 05:02:11,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156125451] [2021-06-05 05:02:11,777 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 05:02:11,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:02:11,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 05:02:11,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=127, Unknown=0, NotChecked=0, Total=210 [2021-06-05 05:02:11,778 INFO L87 Difference]: Start difference. First operand 606 states and 1931 transitions. Second operand has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:11,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:02:11,906 INFO L93 Difference]: Finished difference Result 743 states and 2289 transitions. [2021-06-05 05:02:11,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 05:02:11,907 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-06-05 05:02:11,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:02:11,907 INFO L225 Difference]: With dead ends: 743 [2021-06-05 05:02:11,908 INFO L226 Difference]: Without dead ends: 743 [2021-06-05 05:02:11,908 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 262.3ms TimeCoverageRelationStatistics Valid=83, Invalid=127, Unknown=0, NotChecked=0, Total=210 [2021-06-05 05:02:11,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2021-06-05 05:02:11,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 603. [2021-06-05 05:02:11,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 602 states have (on average 3.1926910299003324) internal successors, (1922), 602 states have internal predecessors, (1922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:11,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 1922 transitions. [2021-06-05 05:02:11,915 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 1922 transitions. Word has length 22 [2021-06-05 05:02:11,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:02:11,915 INFO L482 AbstractCegarLoop]: Abstraction has 603 states and 1922 transitions. [2021-06-05 05:02:11,915 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:11,915 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 1922 transitions. [2021-06-05 05:02:11,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-06-05 05:02:11,916 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:02:11,916 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:02:12,118 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5719,103 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:02:12,118 INFO L430 AbstractCegarLoop]: === Iteration 173 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:02:12,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:02:12,118 INFO L82 PathProgramCache]: Analyzing trace with hash 1017240362, now seen corresponding path program 76 times [2021-06-05 05:02:12,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:02:12,118 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814404069] [2021-06-05 05:02:12,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:02:12,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:02:12,218 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:02:12,218 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:02:12,218 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814404069] [2021-06-05 05:02:12,219 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814404069] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:02:12,219 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411526662] [2021-06-05 05:02:12,219 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:02:12,251 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 05:02:12,252 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:02:12,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-05 05:02:12,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:02:12,462 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:12,463 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:12,463 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:02:12,463 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:12,467 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:12,467 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:12,468 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:02:12,468 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:12,472 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:12,472 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:12,473 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:02:12,473 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:12,477 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:02:12,478 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:12,481 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:12,482 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:12,482 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:02:12,483 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:12,486 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:12,487 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:12,487 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:02:12,488 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:12,491 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:12,491 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:12,495 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:12,495 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:12,496 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:02:12,496 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:12,500 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:12,500 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:12,500 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:02:12,501 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:12,504 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:12,505 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:12,505 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:02:12,506 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:12,509 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:12,510 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:12,513 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:12,514 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:12,517 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:12,517 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:12,521 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:12,522 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:12,527 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:12,528 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:12,528 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:02:12,529 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:12,534 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:12,535 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:12,539 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:12,540 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:12,544 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:12,545 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:12,549 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:12,550 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:12,553 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:12,554 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:12,558 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:12,559 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:12,563 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:12,563 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:12,563 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:02:12,564 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:12,568 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:12,568 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:12,572 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:12,572 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:12,576 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:12,576 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:02:12,577 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:12,787 WARN L205 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2021-06-05 05:02:12,788 INFO L628 ElimStorePlain]: treesize reduction 36, result has 87.9 percent of original size [2021-06-05 05:02:12,792 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 8 dim-0 vars, and 9 xjuncts. [2021-06-05 05:02:12,793 INFO L247 ElimStorePlain]: Needed 26 recursive calls to eliminate 2 variables, input treesize:1065, output treesize:253 [2021-06-05 05:02:13,583 INFO L446 ElimStorePlain]: Different costs {1=[char_at_9], 36=[char_at_5]} [2021-06-05 05:02:13,598 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:13,598 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:13,598 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:02:13,599 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:13,605 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:13,606 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:13,611 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:13,612 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:13,618 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:13,618 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:13,619 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:02:13,620 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:13,626 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:13,626 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:13,632 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:13,633 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:13,638 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:13,639 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:13,645 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:13,645 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:13,651 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:13,652 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:13,657 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:13,657 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:13,663 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:13,664 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:13,669 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:13,670 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:13,675 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:13,675 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:13,680 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:13,681 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:13,687 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:13,687 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:13,687 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:02:13,688 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:13,693 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:13,694 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:13,699 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:13,700 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:13,705 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:13,706 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:13,711 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:13,711 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:13,716 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:13,717 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:13,722 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:13,723 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:13,728 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:13,729 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:13,729 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:02:13,730 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:13,735 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:13,735 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:13,740 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:13,741 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:13,746 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:13,747 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:13,752 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:13,752 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:13,758 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:13,758 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:13,758 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:02:13,759 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:13,764 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:13,764 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:13,769 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:13,770 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:13,770 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:02:13,771 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:13,776 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:13,776 INFO L550 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:13,792 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:13,793 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:13,793 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:02:13,795 INFO L550 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:13,801 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:13,802 INFO L550 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:14,146 WARN L205 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 91 [2021-06-05 05:02:14,147 INFO L628 ElimStorePlain]: treesize reduction 37, result has 89.8 percent of original size [2021-06-05 05:02:14,152 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:14,153 INFO L550 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:14,158 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:02:14,159 INFO L550 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:14,163 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:14,164 INFO L550 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:14,168 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:14,169 INFO L550 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:14,173 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:14,174 INFO L550 ElimStorePlain]: Start of recursive call 38: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:14,179 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:14,180 INFO L550 ElimStorePlain]: Start of recursive call 39: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:14,184 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:02:14,185 INFO L550 ElimStorePlain]: Start of recursive call 40: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:14,189 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:14,190 INFO L550 ElimStorePlain]: Start of recursive call 41: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:14,195 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:14,196 INFO L550 ElimStorePlain]: Start of recursive call 42: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:14,200 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:14,201 INFO L550 ElimStorePlain]: Start of recursive call 43: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:14,206 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:14,206 INFO L550 ElimStorePlain]: Start of recursive call 44: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:14,211 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:14,212 INFO L550 ElimStorePlain]: Start of recursive call 45: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:14,216 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:14,217 INFO L550 ElimStorePlain]: Start of recursive call 46: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:14,221 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:14,222 INFO L550 ElimStorePlain]: Start of recursive call 47: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:14,349 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2021-06-05 05:02:14,349 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:02:14,353 INFO L550 ElimStorePlain]: Start of recursive call 1: 9 dim-0 vars, 2 dim-1 vars, End of recursive call: and 6 xjuncts. [2021-06-05 05:02:14,353 INFO L247 ElimStorePlain]: Needed 47 recursive calls to eliminate 11 variables, input treesize:1464, output treesize:37 [2021-06-05 05:02:14,426 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:02:14,426 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [411526662] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:02:14,426 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:02:14,426 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-05 05:02:14,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105660740] [2021-06-05 05:02:14,426 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 05:02:14,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:02:14,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 05:02:14,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2021-06-05 05:02:14,427 INFO L87 Difference]: Start difference. First operand 603 states and 1922 transitions. Second operand has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:14,701 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 116 [2021-06-05 05:02:14,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:02:14,945 INFO L93 Difference]: Finished difference Result 1032 states and 3025 transitions. [2021-06-05 05:02:14,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-05 05:02:14,945 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-06-05 05:02:14,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:02:14,946 INFO L225 Difference]: With dead ends: 1032 [2021-06-05 05:02:14,946 INFO L226 Difference]: Without dead ends: 934 [2021-06-05 05:02:14,947 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 623.0ms TimeCoverageRelationStatistics Valid=146, Invalid=316, Unknown=0, NotChecked=0, Total=462 [2021-06-05 05:02:14,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 934 states. [2021-06-05 05:02:14,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 934 to 535. [2021-06-05 05:02:14,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 535 states, 534 states have (on average 3.1385767790262173) internal successors, (1676), 534 states have internal predecessors, (1676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:14,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 1676 transitions. [2021-06-05 05:02:14,953 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 1676 transitions. Word has length 22 [2021-06-05 05:02:14,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:02:14,953 INFO L482 AbstractCegarLoop]: Abstraction has 535 states and 1676 transitions. [2021-06-05 05:02:14,953 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:14,953 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 1676 transitions. [2021-06-05 05:02:14,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-06-05 05:02:14,954 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:02:14,954 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:02:15,154 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5822,104 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:02:15,155 INFO L430 AbstractCegarLoop]: === Iteration 174 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:02:15,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:02:15,155 INFO L82 PathProgramCache]: Analyzing trace with hash -1690906438, now seen corresponding path program 77 times [2021-06-05 05:02:15,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:02:15,155 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49478410] [2021-06-05 05:02:15,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:02:15,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:02:15,260 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:02:15,260 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:02:15,261 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49478410] [2021-06-05 05:02:15,261 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49478410] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:02:15,261 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117458259] [2021-06-05 05:02:15,261 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:02:15,294 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 05:02:15,294 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:02:15,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 13 conjunts are in the unsatisfiable core [2021-06-05 05:02:15,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:02:15,450 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:02:15,450 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2117458259] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:02:15,450 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:02:15,451 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 16 [2021-06-05 05:02:15,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492334256] [2021-06-05 05:02:15,451 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 05:02:15,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:02:15,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 05:02:15,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2021-06-05 05:02:15,451 INFO L87 Difference]: Start difference. First operand 535 states and 1676 transitions. Second operand has 16 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:15,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:02:15,768 INFO L93 Difference]: Finished difference Result 675 states and 2037 transitions. [2021-06-05 05:02:15,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 05:02:15,768 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-06-05 05:02:15,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:02:15,769 INFO L225 Difference]: With dead ends: 675 [2021-06-05 05:02:15,769 INFO L226 Difference]: Without dead ends: 528 [2021-06-05 05:02:15,769 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 388.0ms TimeCoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2021-06-05 05:02:15,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2021-06-05 05:02:15,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 470. [2021-06-05 05:02:15,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 469 states have (on average 3.1236673773987205) internal successors, (1465), 469 states have internal predecessors, (1465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:15,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 1465 transitions. [2021-06-05 05:02:15,773 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 1465 transitions. Word has length 22 [2021-06-05 05:02:15,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:02:15,773 INFO L482 AbstractCegarLoop]: Abstraction has 470 states and 1465 transitions. [2021-06-05 05:02:15,773 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:15,773 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 1465 transitions. [2021-06-05 05:02:15,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-06-05 05:02:15,774 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:02:15,774 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:02:15,974 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 105 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6059 [2021-06-05 05:02:15,975 INFO L430 AbstractCegarLoop]: === Iteration 175 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:02:15,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:02:15,975 INFO L82 PathProgramCache]: Analyzing trace with hash 366106694, now seen corresponding path program 78 times [2021-06-05 05:02:15,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:02:15,975 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180443897] [2021-06-05 05:02:15,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:02:15,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:02:16,050 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-06-05 05:02:16,050 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:02:16,050 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180443897] [2021-06-05 05:02:16,050 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180443897] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:02:16,050 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189530165] [2021-06-05 05:02:16,050 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:02:16,093 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-06-05 05:02:16,094 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:02:16,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-05 05:02:16,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:02:16,259 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:02:16,259 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [189530165] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:02:16,259 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:02:16,260 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 16 [2021-06-05 05:02:16,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158306473] [2021-06-05 05:02:16,260 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 05:02:16,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:02:16,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 05:02:16,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2021-06-05 05:02:16,260 INFO L87 Difference]: Start difference. First operand 470 states and 1465 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:17,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:02:17,191 INFO L93 Difference]: Finished difference Result 888 states and 2591 transitions. [2021-06-05 05:02:17,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 05:02:17,192 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-06-05 05:02:17,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:02:17,193 INFO L225 Difference]: With dead ends: 888 [2021-06-05 05:02:17,193 INFO L226 Difference]: Without dead ends: 768 [2021-06-05 05:02:17,193 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 874.4ms TimeCoverageRelationStatistics Valid=230, Invalid=960, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 05:02:17,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 768 states. [2021-06-05 05:02:17,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 768 to 503. [2021-06-05 05:02:17,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 503 states, 502 states have (on average 3.1294820717131473) internal successors, (1571), 502 states have internal predecessors, (1571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:17,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 1571 transitions. [2021-06-05 05:02:17,199 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 1571 transitions. Word has length 22 [2021-06-05 05:02:17,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:02:17,199 INFO L482 AbstractCegarLoop]: Abstraction has 503 states and 1571 transitions. [2021-06-05 05:02:17,199 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:17,199 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 1571 transitions. [2021-06-05 05:02:17,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-06-05 05:02:17,199 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:02:17,200 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:02:17,400 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6068 [2021-06-05 05:02:17,400 INFO L430 AbstractCegarLoop]: === Iteration 176 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:02:17,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:02:17,400 INFO L82 PathProgramCache]: Analyzing trace with hash 1401287990, now seen corresponding path program 79 times [2021-06-05 05:02:17,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:02:17,400 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162629049] [2021-06-05 05:02:17,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:02:17,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:02:17,458 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-06-05 05:02:17,459 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:02:17,459 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162629049] [2021-06-05 05:02:17,459 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162629049] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:02:17,459 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [505351854] [2021-06-05 05:02:17,459 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:02:17,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:02:17,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-05 05:02:17,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:02:17,650 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:02:17,650 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [505351854] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:02:17,651 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:02:17,651 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 16 [2021-06-05 05:02:17,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850331132] [2021-06-05 05:02:17,651 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 05:02:17,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:02:17,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 05:02:17,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2021-06-05 05:02:17,651 INFO L87 Difference]: Start difference. First operand 503 states and 1571 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:18,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:02:18,168 INFO L93 Difference]: Finished difference Result 878 states and 2621 transitions. [2021-06-05 05:02:18,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-05 05:02:18,169 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-06-05 05:02:18,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:02:18,170 INFO L225 Difference]: With dead ends: 878 [2021-06-05 05:02:18,170 INFO L226 Difference]: Without dead ends: 765 [2021-06-05 05:02:18,170 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 471.4ms TimeCoverageRelationStatistics Valid=133, Invalid=569, Unknown=0, NotChecked=0, Total=702 [2021-06-05 05:02:18,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2021-06-05 05:02:18,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 535. [2021-06-05 05:02:18,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 535 states, 534 states have (on average 3.151685393258427) internal successors, (1683), 534 states have internal predecessors, (1683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:18,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 1683 transitions. [2021-06-05 05:02:18,176 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 1683 transitions. Word has length 22 [2021-06-05 05:02:18,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:02:18,176 INFO L482 AbstractCegarLoop]: Abstraction has 535 states and 1683 transitions. [2021-06-05 05:02:18,176 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:18,176 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 1683 transitions. [2021-06-05 05:02:18,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-06-05 05:02:18,177 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:02:18,177 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:02:18,377 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6071,107 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:02:18,377 INFO L430 AbstractCegarLoop]: === Iteration 177 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:02:18,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:02:18,377 INFO L82 PathProgramCache]: Analyzing trace with hash -1773744240, now seen corresponding path program 80 times [2021-06-05 05:02:18,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:02:18,378 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239299172] [2021-06-05 05:02:18,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:02:18,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:02:18,450 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-06-05 05:02:18,451 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:02:18,451 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239299172] [2021-06-05 05:02:18,451 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239299172] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:02:18,451 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077411308] [2021-06-05 05:02:18,451 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:02:18,494 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 05:02:18,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:02:18,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-05 05:02:18,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:02:18,680 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:02:18,680 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077411308] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:02:18,680 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:02:18,680 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 16 [2021-06-05 05:02:18,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320109630] [2021-06-05 05:02:18,681 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 05:02:18,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:02:18,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 05:02:18,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2021-06-05 05:02:18,681 INFO L87 Difference]: Start difference. First operand 535 states and 1683 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:19,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:02:19,209 INFO L93 Difference]: Finished difference Result 875 states and 2609 transitions. [2021-06-05 05:02:19,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-05 05:02:19,210 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-06-05 05:02:19,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:02:19,211 INFO L225 Difference]: With dead ends: 875 [2021-06-05 05:02:19,211 INFO L226 Difference]: Without dead ends: 801 [2021-06-05 05:02:19,211 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 463.5ms TimeCoverageRelationStatistics Valid=150, Invalid=606, Unknown=0, NotChecked=0, Total=756 [2021-06-05 05:02:19,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2021-06-05 05:02:19,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 541. [2021-06-05 05:02:19,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541 states, 540 states have (on average 3.183333333333333) internal successors, (1719), 540 states have internal predecessors, (1719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:19,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 1719 transitions. [2021-06-05 05:02:19,217 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 1719 transitions. Word has length 22 [2021-06-05 05:02:19,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:02:19,217 INFO L482 AbstractCegarLoop]: Abstraction has 541 states and 1719 transitions. [2021-06-05 05:02:19,217 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:19,217 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 1719 transitions. [2021-06-05 05:02:19,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-06-05 05:02:19,218 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:02:19,218 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:02:19,418 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 108 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6074 [2021-06-05 05:02:19,418 INFO L430 AbstractCegarLoop]: === Iteration 178 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:02:19,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:02:19,418 INFO L82 PathProgramCache]: Analyzing trace with hash 1446237344, now seen corresponding path program 81 times [2021-06-05 05:02:19,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:02:19,419 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492567287] [2021-06-05 05:02:19,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:02:19,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:02:19,473 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-06-05 05:02:19,473 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:02:19,473 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492567287] [2021-06-05 05:02:19,473 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492567287] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:02:19,473 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374617758] [2021-06-05 05:02:19,473 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:02:19,505 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-06-05 05:02:19,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:02:19,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-05 05:02:19,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:02:19,729 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:02:19,730 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1374617758] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:02:19,730 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:02:19,730 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 16 [2021-06-05 05:02:19,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148968831] [2021-06-05 05:02:19,730 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 05:02:19,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:02:19,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 05:02:19,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2021-06-05 05:02:19,730 INFO L87 Difference]: Start difference. First operand 541 states and 1719 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:20,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:02:20,819 INFO L93 Difference]: Finished difference Result 1074 states and 3150 transitions. [2021-06-05 05:02:20,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 05:02:20,819 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-06-05 05:02:20,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:02:20,821 INFO L225 Difference]: With dead ends: 1074 [2021-06-05 05:02:20,821 INFO L226 Difference]: Without dead ends: 920 [2021-06-05 05:02:20,821 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 788.8ms TimeCoverageRelationStatistics Valid=210, Invalid=1350, Unknown=0, NotChecked=0, Total=1560 [2021-06-05 05:02:20,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2021-06-05 05:02:20,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 518. [2021-06-05 05:02:20,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 517 states have (on average 3.1450676982591874) internal successors, (1626), 517 states have internal predecessors, (1626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:20,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 1626 transitions. [2021-06-05 05:02:20,827 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 1626 transitions. Word has length 22 [2021-06-05 05:02:20,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:02:20,827 INFO L482 AbstractCegarLoop]: Abstraction has 518 states and 1626 transitions. [2021-06-05 05:02:20,827 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:20,827 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 1626 transitions. [2021-06-05 05:02:20,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-06-05 05:02:20,828 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:02:20,828 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:02:21,028 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6077,109 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:02:21,028 INFO L430 AbstractCegarLoop]: === Iteration 179 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:02:21,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:02:21,029 INFO L82 PathProgramCache]: Analyzing trace with hash 2027403596, now seen corresponding path program 82 times [2021-06-05 05:02:21,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:02:21,029 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313576955] [2021-06-05 05:02:21,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:02:21,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:02:21,083 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-06-05 05:02:21,083 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:02:21,083 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313576955] [2021-06-05 05:02:21,083 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313576955] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:02:21,083 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540532955] [2021-06-05 05:02:21,083 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:02:21,118 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 05:02:21,118 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:02:21,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-05 05:02:21,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:02:21,276 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:02:21,276 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [540532955] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:02:21,276 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:02:21,276 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 16 [2021-06-05 05:02:21,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276360634] [2021-06-05 05:02:21,276 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 05:02:21,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:02:21,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 05:02:21,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-06-05 05:02:21,276 INFO L87 Difference]: Start difference. First operand 518 states and 1626 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:22,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:02:22,056 INFO L93 Difference]: Finished difference Result 919 states and 2747 transitions. [2021-06-05 05:02:22,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 05:02:22,056 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-06-05 05:02:22,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:02:22,057 INFO L225 Difference]: With dead ends: 919 [2021-06-05 05:02:22,057 INFO L226 Difference]: Without dead ends: 802 [2021-06-05 05:02:22,057 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 611.9ms TimeCoverageRelationStatistics Valid=205, Invalid=787, Unknown=0, NotChecked=0, Total=992 [2021-06-05 05:02:22,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 802 states. [2021-06-05 05:02:22,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 802 to 544. [2021-06-05 05:02:22,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 543 states have (on average 3.143646408839779) internal successors, (1707), 543 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:22,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 1707 transitions. [2021-06-05 05:02:22,063 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 1707 transitions. Word has length 22 [2021-06-05 05:02:22,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:02:22,064 INFO L482 AbstractCegarLoop]: Abstraction has 544 states and 1707 transitions. [2021-06-05 05:02:22,064 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:22,064 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 1707 transitions. [2021-06-05 05:02:22,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-06-05 05:02:22,064 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:02:22,064 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:02:22,265 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6087 [2021-06-05 05:02:22,265 INFO L430 AbstractCegarLoop]: === Iteration 180 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:02:22,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:02:22,265 INFO L82 PathProgramCache]: Analyzing trace with hash -1147628634, now seen corresponding path program 83 times [2021-06-05 05:02:22,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:02:22,265 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451795501] [2021-06-05 05:02:22,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:02:22,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:02:22,320 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-06-05 05:02:22,320 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:02:22,320 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451795501] [2021-06-05 05:02:22,321 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451795501] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:02:22,321 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697837913] [2021-06-05 05:02:22,321 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:02:22,354 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 05:02:22,354 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:02:22,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-05 05:02:22,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:02:22,511 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:02:22,512 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [697837913] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:02:22,512 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:02:22,512 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 16 [2021-06-05 05:02:22,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473468391] [2021-06-05 05:02:22,512 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 05:02:22,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:02:22,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 05:02:22,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-06-05 05:02:22,512 INFO L87 Difference]: Start difference. First operand 544 states and 1707 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:23,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:02:23,199 INFO L93 Difference]: Finished difference Result 879 states and 2623 transitions. [2021-06-05 05:02:23,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 05:02:23,200 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-06-05 05:02:23,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:02:23,201 INFO L225 Difference]: With dead ends: 879 [2021-06-05 05:02:23,201 INFO L226 Difference]: Without dead ends: 801 [2021-06-05 05:02:23,201 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 581.6ms TimeCoverageRelationStatistics Valid=223, Invalid=833, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 05:02:23,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2021-06-05 05:02:23,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 555. [2021-06-05 05:02:23,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 555 states, 554 states have (on average 3.184115523465704) internal successors, (1764), 554 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:23,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 1764 transitions. [2021-06-05 05:02:23,207 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 1764 transitions. Word has length 22 [2021-06-05 05:02:23,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:02:23,207 INFO L482 AbstractCegarLoop]: Abstraction has 555 states and 1764 transitions. [2021-06-05 05:02:23,208 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:23,208 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 1764 transitions. [2021-06-05 05:02:23,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-06-05 05:02:23,208 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:02:23,208 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:02:23,409 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6090,111 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:02:23,409 INFO L430 AbstractCegarLoop]: === Iteration 181 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:02:23,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:02:23,409 INFO L82 PathProgramCache]: Analyzing trace with hash 2072352950, now seen corresponding path program 84 times [2021-06-05 05:02:23,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:02:23,409 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289531145] [2021-06-05 05:02:23,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:02:23,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:02:23,455 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-06-05 05:02:23,456 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:02:23,456 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289531145] [2021-06-05 05:02:23,456 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289531145] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:02:23,456 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857430764] [2021-06-05 05:02:23,456 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:02:23,489 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 05:02:23,490 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:02:23,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-05 05:02:23,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:02:23,633 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:02:23,633 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1857430764] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:02:23,633 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:02:23,633 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 16 [2021-06-05 05:02:23,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307310732] [2021-06-05 05:02:23,633 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 05:02:23,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:02:23,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 05:02:23,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2021-06-05 05:02:23,633 INFO L87 Difference]: Start difference. First operand 555 states and 1764 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:24,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:02:24,220 INFO L93 Difference]: Finished difference Result 830 states and 2534 transitions. [2021-06-05 05:02:24,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 05:02:24,221 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-06-05 05:02:24,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:02:24,222 INFO L225 Difference]: With dead ends: 830 [2021-06-05 05:02:24,222 INFO L226 Difference]: Without dead ends: 752 [2021-06-05 05:02:24,222 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 492.5ms TimeCoverageRelationStatistics Valid=202, Invalid=790, Unknown=0, NotChecked=0, Total=992 [2021-06-05 05:02:24,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2021-06-05 05:02:24,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 542. [2021-06-05 05:02:24,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 541 states have (on average 3.190388170055453) internal successors, (1726), 541 states have internal predecessors, (1726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:24,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 1726 transitions. [2021-06-05 05:02:24,228 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 1726 transitions. Word has length 22 [2021-06-05 05:02:24,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:02:24,228 INFO L482 AbstractCegarLoop]: Abstraction has 542 states and 1726 transitions. [2021-06-05 05:02:24,228 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:24,228 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 1726 transitions. [2021-06-05 05:02:24,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-06-05 05:02:24,228 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:02:24,229 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:02:24,429 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6093 [2021-06-05 05:02:24,429 INFO L430 AbstractCegarLoop]: === Iteration 182 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:02:24,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:02:24,429 INFO L82 PathProgramCache]: Analyzing trace with hash 1541888, now seen corresponding path program 85 times [2021-06-05 05:02:24,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:02:24,430 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310906650] [2021-06-05 05:02:24,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:02:24,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:02:24,492 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-06-05 05:02:24,493 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:02:24,493 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310906650] [2021-06-05 05:02:24,493 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310906650] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:02:24,493 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935548327] [2021-06-05 05:02:24,493 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:02:24,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:02:24,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-05 05:02:24,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:02:24,730 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:24,731 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:24,731 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:02:24,732 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:24,735 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:24,735 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:24,736 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:02:24,736 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:24,739 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:24,740 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:24,740 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:02:24,741 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:24,743 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:24,744 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:24,747 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:24,747 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:24,747 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:02:24,748 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:24,751 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:24,751 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:24,751 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:02:24,752 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:24,755 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:24,755 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:24,758 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:24,759 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:24,759 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:02:24,760 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:24,762 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:24,763 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:24,766 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:24,766 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:24,766 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:02:24,767 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:24,770 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:24,770 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:24,772 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:02:24,778 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:24,781 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:24,781 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:24,781 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:02:24,782 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:24,785 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:24,785 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:24,788 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:24,788 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:24,791 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:24,791 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:24,792 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:02:24,792 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:24,794 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:24,795 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:24,798 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:24,798 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:24,798 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:02:24,799 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:24,801 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:24,801 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:24,803 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:24,804 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:24,806 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:24,806 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:24,858 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:02:24,861 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 6 dim-0 vars, and 6 xjuncts. [2021-06-05 05:02:24,861 INFO L247 ElimStorePlain]: Needed 21 recursive calls to eliminate 2 variables, input treesize:745, output treesize:157 [2021-06-05 05:02:25,047 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:02:25,048 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1935548327] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:02:25,048 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:02:25,048 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 15 [2021-06-05 05:02:25,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856865073] [2021-06-05 05:02:25,048 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 05:02:25,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:02:25,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 05:02:25,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2021-06-05 05:02:25,048 INFO L87 Difference]: Start difference. First operand 542 states and 1726 transitions. Second operand has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:25,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:02:25,423 INFO L93 Difference]: Finished difference Result 1008 states and 3071 transitions. [2021-06-05 05:02:25,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-05 05:02:25,423 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-06-05 05:02:25,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:02:25,424 INFO L225 Difference]: With dead ends: 1008 [2021-06-05 05:02:25,424 INFO L226 Difference]: Without dead ends: 852 [2021-06-05 05:02:25,425 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 438.5ms TimeCoverageRelationStatistics Valid=96, Invalid=366, Unknown=0, NotChecked=0, Total=462 [2021-06-05 05:02:25,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2021-06-05 05:02:25,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 520. [2021-06-05 05:02:25,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 520 states, 519 states have (on average 3.1907514450867054) internal successors, (1656), 519 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:25,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 1656 transitions. [2021-06-05 05:02:25,431 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 1656 transitions. Word has length 22 [2021-06-05 05:02:25,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:02:25,431 INFO L482 AbstractCegarLoop]: Abstraction has 520 states and 1656 transitions. [2021-06-05 05:02:25,431 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:25,431 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 1656 transitions. [2021-06-05 05:02:25,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-06-05 05:02:25,432 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:02:25,432 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:02:25,643 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6095,113 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:02:25,644 INFO L430 AbstractCegarLoop]: === Iteration 183 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:02:25,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:02:25,644 INFO L82 PathProgramCache]: Analyzing trace with hash 1810273050, now seen corresponding path program 86 times [2021-06-05 05:02:25,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:02:25,644 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051814482] [2021-06-05 05:02:25,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:02:25,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:02:25,726 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:02:25,726 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:02:25,726 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051814482] [2021-06-05 05:02:25,726 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051814482] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:02:25,726 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039848390] [2021-06-05 05:02:25,727 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:02:25,766 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 05:02:25,767 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:02:25,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-05 05:02:25,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:02:25,972 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:25,973 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:25,973 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:02:25,974 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:25,978 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:25,979 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:25,979 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:02:25,980 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:25,984 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:25,984 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:25,984 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:02:25,985 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:25,989 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:25,990 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:25,993 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:25,994 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:25,998 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:25,999 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:25,999 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:02:26,000 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:26,003 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:26,004 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:26,007 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:26,008 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:26,012 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:26,012 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:26,012 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:02:26,013 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:26,016 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:26,017 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:26,021 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:26,021 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:26,022 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:02:26,022 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:26,026 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:26,026 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:26,030 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:26,030 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:26,031 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:02:26,031 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:26,035 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:26,035 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:26,039 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:26,039 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:26,041 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:02:26,042 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:26,045 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:26,046 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:26,049 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:26,050 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:26,052 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:26,053 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:26,055 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:26,056 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:26,058 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:26,058 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:02:26,059 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:26,111 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:02:26,114 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 6 dim-0 vars, and 6 xjuncts. [2021-06-05 05:02:26,114 INFO L247 ElimStorePlain]: Needed 21 recursive calls to eliminate 2 variables, input treesize:789, output treesize:169 [2021-06-05 05:02:26,371 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:02:26,371 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2039848390] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:02:26,371 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:02:26,371 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2021-06-05 05:02:26,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613551841] [2021-06-05 05:02:26,371 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 05:02:26,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:02:26,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 05:02:26,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2021-06-05 05:02:26,372 INFO L87 Difference]: Start difference. First operand 520 states and 1656 transitions. Second operand has 15 states, 15 states have (on average 2.066666666666667) internal successors, (31), 15 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:26,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:02:26,618 INFO L93 Difference]: Finished difference Result 707 states and 2224 transitions. [2021-06-05 05:02:26,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 05:02:26,619 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.066666666666667) internal successors, (31), 15 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-06-05 05:02:26,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:02:26,620 INFO L225 Difference]: With dead ends: 707 [2021-06-05 05:02:26,620 INFO L226 Difference]: Without dead ends: 689 [2021-06-05 05:02:26,620 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 351.5ms TimeCoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2021-06-05 05:02:26,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2021-06-05 05:02:26,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 538. [2021-06-05 05:02:26,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 537 states have (on average 3.184357541899441) internal successors, (1710), 537 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:26,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 1710 transitions. [2021-06-05 05:02:26,626 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 1710 transitions. Word has length 22 [2021-06-05 05:02:26,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:02:26,626 INFO L482 AbstractCegarLoop]: Abstraction has 538 states and 1710 transitions. [2021-06-05 05:02:26,626 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.066666666666667) internal successors, (31), 15 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:26,626 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 1710 transitions. [2021-06-05 05:02:26,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-06-05 05:02:26,627 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:02:26,627 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:02:26,827 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 114 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6164 [2021-06-05 05:02:26,827 INFO L430 AbstractCegarLoop]: === Iteration 184 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:02:26,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:02:26,827 INFO L82 PathProgramCache]: Analyzing trace with hash 1345939200, now seen corresponding path program 87 times [2021-06-05 05:02:26,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:02:26,828 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300908956] [2021-06-05 05:02:26,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:02:26,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:02:26,910 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:02:26,910 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:02:26,910 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300908956] [2021-06-05 05:02:26,910 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300908956] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:02:26,910 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1452137495] [2021-06-05 05:02:26,910 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:02:26,943 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-06-05 05:02:26,943 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:02:26,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-05 05:02:26,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:02:27,139 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:27,139 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:27,139 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:02:27,140 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:27,144 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:27,144 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:27,144 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:02:27,145 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:27,148 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:27,148 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:27,149 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:02:27,149 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:27,153 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:27,153 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:27,153 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:02:27,154 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:27,157 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:27,157 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:27,160 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:27,161 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:27,161 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:02:27,162 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:27,164 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:27,165 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:27,165 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:02:27,166 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:27,169 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:27,169 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:27,169 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:02:27,170 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:27,173 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:27,173 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:27,176 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:27,176 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:27,179 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:27,179 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:27,182 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:27,183 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:27,185 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:27,186 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:27,188 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:27,189 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:27,191 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:27,192 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:27,194 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:27,194 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:27,197 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:27,197 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:27,200 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:27,200 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:27,201 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:02:27,201 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:27,203 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:27,204 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:27,206 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:27,206 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:02:27,207 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:27,258 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:02:27,261 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 6 dim-0 vars, and 6 xjuncts. [2021-06-05 05:02:27,262 INFO L247 ElimStorePlain]: Needed 21 recursive calls to eliminate 2 variables, input treesize:789, output treesize:169 [2021-06-05 05:02:27,514 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:27,515 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:27,520 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:27,520 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:27,521 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:02:27,521 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:27,526 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:27,526 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:02:27,527 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:27,669 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 65 [2021-06-05 05:02:27,669 INFO L628 ElimStorePlain]: treesize reduction 304, result has 30.9 percent of original size [2021-06-05 05:02:27,673 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:27,674 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:27,717 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:02:27,720 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:27,721 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:27,763 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:02:27,767 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:02:27,768 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:27,807 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:02:27,810 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:27,811 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:27,867 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:02:27,870 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:02:27,871 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:27,905 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:02:27,907 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 6 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-05 05:02:27,907 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 12 variables, input treesize:481, output treesize:13 [2021-06-05 05:02:27,946 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:02:27,946 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1452137495] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:02:27,946 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:02:27,946 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 15 [2021-06-05 05:02:27,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789902171] [2021-06-05 05:02:27,946 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 05:02:27,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:02:27,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 05:02:27,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2021-06-05 05:02:27,947 INFO L87 Difference]: Start difference. First operand 538 states and 1710 transitions. Second operand has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:28,588 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 92 [2021-06-05 05:02:28,735 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 91 [2021-06-05 05:02:28,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:02:28,818 INFO L93 Difference]: Finished difference Result 1029 states and 3071 transitions. [2021-06-05 05:02:28,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-05 05:02:28,818 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-06-05 05:02:28,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:02:28,819 INFO L225 Difference]: With dead ends: 1029 [2021-06-05 05:02:28,819 INFO L226 Difference]: Without dead ends: 933 [2021-06-05 05:02:28,819 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 21 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 857.3ms TimeCoverageRelationStatistics Valid=169, Invalid=481, Unknown=0, NotChecked=0, Total=650 [2021-06-05 05:02:28,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 933 states. [2021-06-05 05:02:28,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 933 to 579. [2021-06-05 05:02:28,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 578 states have (on average 3.167820069204152) internal successors, (1831), 578 states have internal predecessors, (1831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:28,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 1831 transitions. [2021-06-05 05:02:28,826 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 1831 transitions. Word has length 22 [2021-06-05 05:02:28,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:02:28,826 INFO L482 AbstractCegarLoop]: Abstraction has 579 states and 1831 transitions. [2021-06-05 05:02:28,827 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:28,827 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 1831 transitions. [2021-06-05 05:02:28,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-06-05 05:02:28,827 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:02:28,827 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:02:29,028 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6229,115 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:02:29,028 INFO L430 AbstractCegarLoop]: === Iteration 185 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:02:29,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:02:29,028 INFO L82 PathProgramCache]: Analyzing trace with hash -1578533286, now seen corresponding path program 88 times [2021-06-05 05:02:29,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:02:29,028 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803472575] [2021-06-05 05:02:29,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:02:29,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:02:29,107 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:02:29,107 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:02:29,107 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803472575] [2021-06-05 05:02:29,107 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803472575] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:02:29,107 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [344961740] [2021-06-05 05:02:29,107 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:02:29,140 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 05:02:29,140 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:02:29,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-05 05:02:29,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:02:29,330 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:29,330 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:29,330 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:02:29,331 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:29,334 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:29,335 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:29,335 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:02:29,335 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:29,338 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:29,339 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:29,339 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:02:29,340 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:29,342 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:29,343 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:29,346 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:29,346 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:29,346 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:02:29,347 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:29,350 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:29,351 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:29,351 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:02:29,352 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:29,355 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:29,355 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:29,355 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:02:29,356 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:29,359 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:29,359 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:29,362 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:29,363 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:29,363 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:02:29,364 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:29,367 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:29,367 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:29,367 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:02:29,368 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:29,371 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:29,371 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:29,371 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:02:29,372 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:29,375 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:29,375 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:29,378 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:29,378 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:29,381 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:29,381 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:29,384 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:29,385 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:29,387 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:29,388 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:29,388 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:02:29,388 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:29,391 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:29,391 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:29,393 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:29,394 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:29,396 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:29,397 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:29,399 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:29,399 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:29,451 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:02:29,454 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 6 dim-0 vars, and 6 xjuncts. [2021-06-05 05:02:29,455 INFO L247 ElimStorePlain]: Needed 21 recursive calls to eliminate 2 variables, input treesize:789, output treesize:169 [2021-06-05 05:02:29,700 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:29,700 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:29,700 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:02:29,701 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:29,706 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:29,706 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:29,706 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:02:29,708 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:29,712 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:29,712 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:29,859 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 65 [2021-06-05 05:02:29,859 INFO L628 ElimStorePlain]: treesize reduction 287, result has 32.2 percent of original size [2021-06-05 05:02:29,862 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:29,863 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:29,906 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:02:29,909 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:29,910 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:29,952 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:02:29,955 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:29,956 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:29,995 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:02:29,999 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:02:30,000 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:30,037 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:02:30,039 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:02:30,040 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:30,075 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:02:30,076 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 6 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-05 05:02:30,076 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 12 variables, input treesize:481, output treesize:13 [2021-06-05 05:02:30,104 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:02:30,104 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [344961740] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:02:30,104 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:02:30,104 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2021-06-05 05:02:30,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324894256] [2021-06-05 05:02:30,104 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 05:02:30,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:02:30,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 05:02:30,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=134, Unknown=0, NotChecked=0, Total=210 [2021-06-05 05:02:30,105 INFO L87 Difference]: Start difference. First operand 579 states and 1831 transitions. Second operand has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:30,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:02:30,364 INFO L93 Difference]: Finished difference Result 700 states and 2191 transitions. [2021-06-05 05:02:30,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 05:02:30,365 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-06-05 05:02:30,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:02:30,366 INFO L225 Difference]: With dead ends: 700 [2021-06-05 05:02:30,366 INFO L226 Difference]: Without dead ends: 700 [2021-06-05 05:02:30,366 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 385.8ms TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2021-06-05 05:02:30,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2021-06-05 05:02:30,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 566. [2021-06-05 05:02:30,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 565 states have (on average 3.175221238938053) internal successors, (1794), 565 states have internal predecessors, (1794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:30,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 1794 transitions. [2021-06-05 05:02:30,371 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 1794 transitions. Word has length 22 [2021-06-05 05:02:30,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:02:30,372 INFO L482 AbstractCegarLoop]: Abstraction has 566 states and 1794 transitions. [2021-06-05 05:02:30,372 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:30,372 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 1794 transitions. [2021-06-05 05:02:30,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-06-05 05:02:30,372 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:02:30,372 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:02:30,573 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 116 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6309 [2021-06-05 05:02:30,573 INFO L430 AbstractCegarLoop]: === Iteration 186 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:02:30,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:02:30,573 INFO L82 PathProgramCache]: Analyzing trace with hash 1348243584, now seen corresponding path program 89 times [2021-06-05 05:02:30,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:02:30,573 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094877766] [2021-06-05 05:02:30,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:02:30,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:02:30,623 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-06-05 05:02:30,623 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:02:30,623 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094877766] [2021-06-05 05:02:30,623 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094877766] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:02:30,623 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815074981] [2021-06-05 05:02:30,623 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:02:30,659 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 05:02:30,659 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:02:30,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-05 05:02:30,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:02:30,810 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:02:30,811 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1815074981] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:02:30,811 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:02:30,811 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 16 [2021-06-05 05:02:30,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351229111] [2021-06-05 05:02:30,811 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 05:02:30,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:02:30,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 05:02:30,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2021-06-05 05:02:30,811 INFO L87 Difference]: Start difference. First operand 566 states and 1794 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:31,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:02:31,407 INFO L93 Difference]: Finished difference Result 820 states and 2463 transitions. [2021-06-05 05:02:31,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 05:02:31,407 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-06-05 05:02:31,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:02:31,408 INFO L225 Difference]: With dead ends: 820 [2021-06-05 05:02:31,409 INFO L226 Difference]: Without dead ends: 742 [2021-06-05 05:02:31,409 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 493.1ms TimeCoverageRelationStatistics Valid=245, Invalid=877, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 05:02:31,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2021-06-05 05:02:31,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 534. [2021-06-05 05:02:31,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 533 states have (on average 3.1106941838649154) internal successors, (1658), 533 states have internal predecessors, (1658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:31,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 1658 transitions. [2021-06-05 05:02:31,416 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 1658 transitions. Word has length 22 [2021-06-05 05:02:31,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:02:31,416 INFO L482 AbstractCegarLoop]: Abstraction has 534 states and 1658 transitions. [2021-06-05 05:02:31,416 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:31,416 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 1658 transitions. [2021-06-05 05:02:31,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-06-05 05:02:31,417 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:02:31,417 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:02:31,636 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6384,117 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:02:31,637 INFO L430 AbstractCegarLoop]: === Iteration 187 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:02:31,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:02:31,637 INFO L82 PathProgramCache]: Analyzing trace with hash 2097660014, now seen corresponding path program 90 times [2021-06-05 05:02:31,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:02:31,637 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133059825] [2021-06-05 05:02:31,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:02:31,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:02:31,726 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:02:31,726 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:02:31,726 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133059825] [2021-06-05 05:02:31,726 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133059825] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:02:31,726 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564890325] [2021-06-05 05:02:31,726 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:02:31,760 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 05:02:31,760 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:02:31,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-05 05:02:31,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:02:32,038 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:32,039 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:32,039 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:02:32,040 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:32,043 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:32,043 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:32,044 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:02:32,044 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:32,048 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:32,048 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:32,048 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:02:32,049 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:32,053 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:32,053 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:32,053 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:02:32,054 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:32,057 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:32,058 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:32,061 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:32,061 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:32,062 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:02:32,062 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:32,065 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:32,066 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:32,066 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:02:32,067 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:32,070 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:32,070 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:32,071 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:02:32,071 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:32,074 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:32,075 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:32,075 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:02:32,076 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:32,079 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:32,079 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:32,082 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:32,083 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:32,086 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:32,086 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:32,089 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:32,090 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:32,092 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:32,093 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:32,096 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:32,096 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:32,099 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:02:32,100 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:32,103 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:32,104 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:32,104 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:02:32,104 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:32,107 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:32,108 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:32,111 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:32,111 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:32,111 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:02:32,112 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:32,115 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:32,115 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:32,118 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:32,119 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:32,122 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:32,122 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:32,125 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:32,125 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:32,128 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:32,128 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:32,131 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:32,131 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:02:32,132 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:32,277 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 32 [2021-06-05 05:02:32,277 INFO L628 ElimStorePlain]: treesize reduction 32, result has 87.5 percent of original size [2021-06-05 05:02:32,281 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 8 dim-0 vars, and 9 xjuncts. [2021-06-05 05:02:32,281 INFO L247 ElimStorePlain]: Needed 26 recursive calls to eliminate 2 variables, input treesize:953, output treesize:215 [2021-06-05 05:02:32,622 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:02:32,623 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1564890325] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:02:32,623 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:02:32,623 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-06-05 05:02:32,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929863501] [2021-06-05 05:02:32,623 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 05:02:32,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:02:32,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 05:02:32,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-06-05 05:02:32,623 INFO L87 Difference]: Start difference. First operand 534 states and 1658 transitions. Second operand has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:33,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:02:33,015 INFO L93 Difference]: Finished difference Result 760 states and 2269 transitions. [2021-06-05 05:02:33,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 05:02:33,016 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-06-05 05:02:33,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:02:33,017 INFO L225 Difference]: With dead ends: 760 [2021-06-05 05:02:33,017 INFO L226 Difference]: Without dead ends: 750 [2021-06-05 05:02:33,017 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 494.3ms TimeCoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2021-06-05 05:02:33,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2021-06-05 05:02:33,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 553. [2021-06-05 05:02:33,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 552 states have (on average 3.119565217391304) internal successors, (1722), 552 states have internal predecessors, (1722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:33,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 1722 transitions. [2021-06-05 05:02:33,028 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 1722 transitions. Word has length 22 [2021-06-05 05:02:33,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:02:33,028 INFO L482 AbstractCegarLoop]: Abstraction has 553 states and 1722 transitions. [2021-06-05 05:02:33,028 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:33,028 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 1722 transitions. [2021-06-05 05:02:33,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-06-05 05:02:33,029 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:02:33,029 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:02:33,251 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 118 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6386 [2021-06-05 05:02:33,251 INFO L430 AbstractCegarLoop]: === Iteration 188 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:02:33,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:02:33,251 INFO L82 PathProgramCache]: Analyzing trace with hash 2116996494, now seen corresponding path program 91 times [2021-06-05 05:02:33,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:02:33,251 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099034115] [2021-06-05 05:02:33,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:02:33,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:02:33,329 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:02:33,329 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:02:33,329 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099034115] [2021-06-05 05:02:33,329 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099034115] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:02:33,329 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133965530] [2021-06-05 05:02:33,329 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:02:33,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:02:33,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-05 05:02:33,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:02:33,618 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:02:33,619 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:33,623 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:33,623 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:33,624 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:02:33,624 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:33,628 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:33,628 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:33,628 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:02:33,629 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:33,632 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:33,633 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:33,633 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:02:33,633 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:33,637 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:33,637 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:33,637 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:02:33,638 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:33,641 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:33,642 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:33,645 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:33,646 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:33,649 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:33,650 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:33,650 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:02:33,650 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:33,653 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:33,654 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:33,657 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:33,658 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:33,658 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:02:33,658 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:33,662 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:33,662 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:33,662 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:02:33,663 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:33,666 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:33,666 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:33,666 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:02:33,667 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:33,670 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:33,670 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:33,671 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:02:33,672 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:33,675 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:33,675 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:33,675 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:02:33,676 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:33,679 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:33,680 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:33,680 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:02:33,681 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:33,684 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:33,684 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:33,687 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:33,688 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:33,691 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:33,691 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:33,694 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:33,694 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:33,697 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:33,698 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:33,701 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:33,702 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:33,705 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:33,705 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:33,705 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:02:33,706 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:33,709 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:33,709 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:33,712 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:33,713 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:33,715 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:33,715 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:33,881 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 32 [2021-06-05 05:02:33,881 INFO L628 ElimStorePlain]: treesize reduction 32, result has 87.5 percent of original size [2021-06-05 05:02:33,885 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 8 dim-0 vars, and 9 xjuncts. [2021-06-05 05:02:33,885 INFO L247 ElimStorePlain]: Needed 26 recursive calls to eliminate 2 variables, input treesize:953, output treesize:215 [2021-06-05 05:02:34,233 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:02:34,233 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133965530] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:02:34,233 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:02:34,233 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 15 [2021-06-05 05:02:34,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927461078] [2021-06-05 05:02:34,233 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 05:02:34,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:02:34,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 05:02:34,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2021-06-05 05:02:34,234 INFO L87 Difference]: Start difference. First operand 553 states and 1722 transitions. Second operand has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:34,568 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 113 [2021-06-05 05:02:34,786 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 115 [2021-06-05 05:02:35,003 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 74 [2021-06-05 05:02:35,222 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 117 [2021-06-05 05:02:35,395 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 114 [2021-06-05 05:02:35,589 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 116 [2021-06-05 05:02:35,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:02:35,622 INFO L93 Difference]: Finished difference Result 937 states and 2716 transitions. [2021-06-05 05:02:35,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 05:02:35,622 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-06-05 05:02:35,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:02:35,623 INFO L225 Difference]: With dead ends: 937 [2021-06-05 05:02:35,624 INFO L226 Difference]: Without dead ends: 766 [2021-06-05 05:02:35,624 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 19 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 1341.9ms TimeCoverageRelationStatistics Valid=115, Invalid=485, Unknown=0, NotChecked=0, Total=600 [2021-06-05 05:02:35,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2021-06-05 05:02:35,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 534. [2021-06-05 05:02:35,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 533 states have (on average 3.0844277673545966) internal successors, (1644), 533 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:35,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 1644 transitions. [2021-06-05 05:02:35,631 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 1644 transitions. Word has length 22 [2021-06-05 05:02:35,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:02:35,631 INFO L482 AbstractCegarLoop]: Abstraction has 534 states and 1644 transitions. [2021-06-05 05:02:35,631 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:35,631 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 1644 transitions. [2021-06-05 05:02:35,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-06-05 05:02:35,632 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:02:35,632 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:02:35,844 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6479,119 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:02:35,845 INFO L430 AbstractCegarLoop]: === Iteration 189 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:02:35,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:02:35,845 INFO L82 PathProgramCache]: Analyzing trace with hash -625603282, now seen corresponding path program 92 times [2021-06-05 05:02:35,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:02:35,845 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503294214] [2021-06-05 05:02:35,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:02:35,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:02:35,924 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:02:35,924 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:02:35,924 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503294214] [2021-06-05 05:02:35,924 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503294214] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:02:35,924 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37822836] [2021-06-05 05:02:35,924 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:02:35,958 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 05:02:35,958 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:02:35,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-05 05:02:35,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:02:36,177 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:36,178 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:36,182 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:36,182 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:36,182 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:02:36,183 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:36,186 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:36,187 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:36,190 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:36,191 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:36,191 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:02:36,192 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:36,195 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:36,195 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:36,196 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:02:36,197 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:36,200 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:36,200 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:36,200 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:02:36,201 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:36,204 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:36,205 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:36,208 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:36,208 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:36,209 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:02:36,209 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:36,213 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:36,213 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:36,213 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:02:36,214 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:36,217 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:36,217 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:36,220 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:36,221 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:36,224 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:36,224 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:36,228 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:36,228 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:36,228 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:02:36,229 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:36,232 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:36,232 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:36,235 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:36,236 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:36,239 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:36,239 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:36,242 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:36,243 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:36,246 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:02:36,247 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:36,250 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:36,250 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:36,250 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:02:36,251 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:36,254 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:36,254 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:36,254 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:02:36,255 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:36,257 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:36,258 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:36,261 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:36,261 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:36,264 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:36,264 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:36,267 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:36,267 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:36,270 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:36,270 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:36,415 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 32 [2021-06-05 05:02:36,415 INFO L628 ElimStorePlain]: treesize reduction 32, result has 87.5 percent of original size [2021-06-05 05:02:36,418 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 8 dim-0 vars, and 9 xjuncts. [2021-06-05 05:02:36,419 INFO L247 ElimStorePlain]: Needed 26 recursive calls to eliminate 2 variables, input treesize:953, output treesize:215 [2021-06-05 05:02:36,772 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:36,773 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:36,773 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:02:36,774 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:36,779 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:36,779 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:36,784 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:36,785 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:36,993 WARN L205 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 86 [2021-06-05 05:02:36,993 INFO L628 ElimStorePlain]: treesize reduction 391, result has 31.8 percent of original size [2021-06-05 05:02:36,998 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:36,999 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:37,063 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:02:37,067 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:37,068 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:37,130 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:02:37,135 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:02:37,136 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:37,195 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:02:37,199 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:37,200 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:37,258 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:02:37,262 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:02:37,263 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:37,318 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:02:37,322 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:37,323 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:37,377 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:02:37,381 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:37,382 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:37,433 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:02:37,435 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 8 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-06-05 05:02:37,435 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 16 variables, input treesize:629, output treesize:24 [2021-06-05 05:02:37,493 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:02:37,493 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [37822836] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:02:37,493 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:02:37,493 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2021-06-05 05:02:37,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288291964] [2021-06-05 05:02:37,494 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 05:02:37,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:02:37,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 05:02:37,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2021-06-05 05:02:37,494 INFO L87 Difference]: Start difference. First operand 534 states and 1644 transitions. Second operand has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:37,734 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 106 [2021-06-05 05:02:37,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:02:37,961 INFO L93 Difference]: Finished difference Result 717 states and 2150 transitions. [2021-06-05 05:02:37,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 05:02:37,961 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-06-05 05:02:37,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:02:37,962 INFO L225 Difference]: With dead ends: 717 [2021-06-05 05:02:37,962 INFO L226 Difference]: Without dead ends: 707 [2021-06-05 05:02:37,962 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 574.5ms TimeCoverageRelationStatistics Valid=100, Invalid=206, Unknown=0, NotChecked=0, Total=306 [2021-06-05 05:02:37,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2021-06-05 05:02:37,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 549. [2021-06-05 05:02:37,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 548 states have (on average 3.1076642335766422) internal successors, (1703), 548 states have internal predecessors, (1703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:37,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 1703 transitions. [2021-06-05 05:02:37,968 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 1703 transitions. Word has length 22 [2021-06-05 05:02:37,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:02:37,968 INFO L482 AbstractCegarLoop]: Abstraction has 549 states and 1703 transitions. [2021-06-05 05:02:37,968 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:37,968 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 1703 transitions. [2021-06-05 05:02:37,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-06-05 05:02:37,969 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:02:37,969 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:02:38,169 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6568,120 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:02:38,169 INFO L430 AbstractCegarLoop]: === Iteration 190 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:02:38,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:02:38,169 INFO L82 PathProgramCache]: Analyzing trace with hash 1895182062, now seen corresponding path program 93 times [2021-06-05 05:02:38,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:02:38,170 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657529256] [2021-06-05 05:02:38,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:02:38,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:02:38,264 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:02:38,264 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:02:38,265 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657529256] [2021-06-05 05:02:38,265 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657529256] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:02:38,265 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1034220745] [2021-06-05 05:02:38,265 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:02:38,299 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 05:02:38,299 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:02:38,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-05 05:02:38,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:02:38,512 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:38,513 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:38,513 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:02:38,514 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:38,517 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:38,518 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:38,518 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:02:38,519 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:38,522 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:38,522 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:38,523 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:02:38,523 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:38,526 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:38,527 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:38,527 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:02:38,528 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:38,531 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:38,532 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:38,532 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:02:38,533 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:38,536 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:38,536 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:38,539 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:38,540 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:38,543 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:38,544 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:38,547 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:38,547 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:38,547 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:02:38,548 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:38,551 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:38,551 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:38,555 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:38,555 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:38,555 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:02:38,556 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:38,559 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:38,560 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:38,560 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:02:38,560 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:38,563 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:38,564 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:38,567 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:02:38,568 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:38,571 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:38,571 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:38,571 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:02:38,572 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:38,575 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:38,575 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:38,578 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:38,579 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:38,581 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:38,582 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:38,585 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:38,585 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:38,588 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:38,589 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:38,591 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:38,592 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:38,594 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:38,595 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:38,598 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:38,598 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:38,601 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:38,602 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:38,604 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:38,605 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:38,752 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 32 [2021-06-05 05:02:38,752 INFO L628 ElimStorePlain]: treesize reduction 32, result has 87.5 percent of original size [2021-06-05 05:02:38,757 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 8 dim-0 vars, and 9 xjuncts. [2021-06-05 05:02:38,757 INFO L247 ElimStorePlain]: Needed 26 recursive calls to eliminate 2 variables, input treesize:953, output treesize:215 [2021-06-05 05:02:39,113 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:39,114 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:39,114 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:02:39,115 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:39,120 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:39,121 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:39,127 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:39,127 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:02:39,128 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:39,357 WARN L205 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 86 [2021-06-05 05:02:39,358 INFO L628 ElimStorePlain]: treesize reduction 406, result has 31.0 percent of original size [2021-06-05 05:02:39,362 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:02:39,363 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:39,425 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:02:39,430 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:39,431 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:39,491 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:02:39,495 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:02:39,496 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:39,553 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:02:39,557 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:39,558 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:39,614 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:02:39,618 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:39,619 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:39,674 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:02:39,678 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:39,679 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:39,732 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:02:39,735 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:39,736 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:39,788 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:02:39,790 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 8 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-06-05 05:02:39,790 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 16 variables, input treesize:629, output treesize:24 [2021-06-05 05:02:39,861 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:02:39,862 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1034220745] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:02:39,862 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:02:39,862 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 15 [2021-06-05 05:02:39,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351601318] [2021-06-05 05:02:39,862 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 05:02:39,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:02:39,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 05:02:39,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2021-06-05 05:02:39,862 INFO L87 Difference]: Start difference. First operand 549 states and 1703 transitions. Second operand has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:40,126 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 114 [2021-06-05 05:02:40,339 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 116 [2021-06-05 05:02:40,579 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 120 [2021-06-05 05:02:40,732 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 91 [2021-06-05 05:02:41,023 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 90 [2021-06-05 05:02:41,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:02:41,038 INFO L93 Difference]: Finished difference Result 815 states and 2416 transitions. [2021-06-05 05:02:41,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 05:02:41,038 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-06-05 05:02:41,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:02:41,039 INFO L225 Difference]: With dead ends: 815 [2021-06-05 05:02:41,039 INFO L226 Difference]: Without dead ends: 717 [2021-06-05 05:02:41,039 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 19 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 1245.4ms TimeCoverageRelationStatistics Valid=156, Invalid=444, Unknown=0, NotChecked=0, Total=600 [2021-06-05 05:02:41,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2021-06-05 05:02:41,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 450. [2021-06-05 05:02:41,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 449 states have (on average 3.035634743875278) internal successors, (1363), 449 states have internal predecessors, (1363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:41,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 1363 transitions. [2021-06-05 05:02:41,044 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 1363 transitions. Word has length 22 [2021-06-05 05:02:41,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:02:41,044 INFO L482 AbstractCegarLoop]: Abstraction has 450 states and 1363 transitions. [2021-06-05 05:02:41,044 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:41,044 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 1363 transitions. [2021-06-05 05:02:41,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-06-05 05:02:41,045 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:02:41,045 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:02:41,245 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 121 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6664 [2021-06-05 05:02:41,245 INFO L430 AbstractCegarLoop]: === Iteration 191 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:02:41,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:02:41,246 INFO L82 PathProgramCache]: Analyzing trace with hash 1529696108, now seen corresponding path program 94 times [2021-06-05 05:02:41,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:02:41,246 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700990494] [2021-06-05 05:02:41,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:02:41,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:02:41,320 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:02:41,320 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:02:41,320 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700990494] [2021-06-05 05:02:41,320 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700990494] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:02:41,320 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158089216] [2021-06-05 05:02:41,320 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:02:41,354 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 05:02:41,355 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:02:41,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-05 05:02:41,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:02:41,476 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:02:41,477 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:41,480 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:41,481 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:41,484 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:41,485 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:41,488 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:02:41,488 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:41,491 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:41,492 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:41,494 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:41,495 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:41,498 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:41,498 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:41,501 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:41,502 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:41,505 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:02:41,505 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:41,508 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:41,509 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:41,512 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:41,513 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:41,515 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:41,516 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:41,526 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:41,527 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:41,529 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:41,530 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:41,533 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:02:41,534 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:41,536 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:41,537 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:41,539 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:41,540 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:41,542 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:41,543 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:41,545 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:41,545 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:41,548 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:41,548 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:41,550 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:41,551 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:41,672 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 29 [2021-06-05 05:02:41,672 INFO L628 ElimStorePlain]: treesize reduction 29, result has 77.0 percent of original size [2021-06-05 05:02:41,674 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 3 dim-0 vars, and 4 xjuncts. [2021-06-05 05:02:41,675 INFO L247 ElimStorePlain]: Needed 22 recursive calls to eliminate 2 variables, input treesize:710, output treesize:89 [2021-06-05 05:02:42,091 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:02:42,091 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1158089216] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:02:42,091 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:02:42,091 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-05 05:02:42,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489216071] [2021-06-05 05:02:42,092 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 05:02:42,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:02:42,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 05:02:42,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2021-06-05 05:02:42,092 INFO L87 Difference]: Start difference. First operand 450 states and 1363 transitions. Second operand has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:42,671 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2021-06-05 05:02:43,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:02:43,227 INFO L93 Difference]: Finished difference Result 836 states and 2385 transitions. [2021-06-05 05:02:43,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-05 05:02:43,227 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-06-05 05:02:43,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:02:43,228 INFO L225 Difference]: With dead ends: 836 [2021-06-05 05:02:43,228 INFO L226 Difference]: Without dead ends: 781 [2021-06-05 05:02:43,228 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 911.6ms TimeCoverageRelationStatistics Valid=183, Invalid=1007, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 05:02:43,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2021-06-05 05:02:43,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 479. [2021-06-05 05:02:43,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 478 states have (on average 3.0460251046025104) internal successors, (1456), 478 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:43,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 1456 transitions. [2021-06-05 05:02:43,245 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 1456 transitions. Word has length 22 [2021-06-05 05:02:43,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:02:43,245 INFO L482 AbstractCegarLoop]: Abstraction has 479 states and 1456 transitions. [2021-06-05 05:02:43,245 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:43,245 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 1456 transitions. [2021-06-05 05:02:43,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-06-05 05:02:43,245 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:02:43,245 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:02:43,446 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6758,122 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:02:43,446 INFO L430 AbstractCegarLoop]: === Iteration 192 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:02:43,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:02:43,447 INFO L82 PathProgramCache]: Analyzing trace with hash -2035429848, now seen corresponding path program 95 times [2021-06-05 05:02:43,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:02:43,447 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394462471] [2021-06-05 05:02:43,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:02:43,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:02:43,518 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:02:43,518 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:02:43,518 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394462471] [2021-06-05 05:02:43,518 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394462471] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:02:43,518 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814335731] [2021-06-05 05:02:43,518 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 123 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 123 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:02:43,553 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 05:02:43,553 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:02:43,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-05 05:02:43,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:02:44,133 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:02:44,133 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [814335731] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:02:44,133 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:02:44,133 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-05 05:02:44,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966437338] [2021-06-05 05:02:44,134 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 05:02:44,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:02:44,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 05:02:44,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2021-06-05 05:02:44,134 INFO L87 Difference]: Start difference. First operand 479 states and 1456 transitions. Second operand has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:44,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:02:44,695 INFO L93 Difference]: Finished difference Result 990 states and 2810 transitions. [2021-06-05 05:02:44,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-05 05:02:44,695 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-06-05 05:02:44,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:02:44,696 INFO L225 Difference]: With dead ends: 990 [2021-06-05 05:02:44,696 INFO L226 Difference]: Without dead ends: 868 [2021-06-05 05:02:44,697 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 456.5ms TimeCoverageRelationStatistics Valid=237, Invalid=819, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 05:02:44,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 868 states. [2021-06-05 05:02:44,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 868 to 412. [2021-06-05 05:02:44,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 411 states have (on average 3.017031630170316) internal successors, (1240), 411 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:44,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 1240 transitions. [2021-06-05 05:02:44,702 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 1240 transitions. Word has length 22 [2021-06-05 05:02:44,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:02:44,702 INFO L482 AbstractCegarLoop]: Abstraction has 412 states and 1240 transitions. [2021-06-05 05:02:44,702 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:44,702 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 1240 transitions. [2021-06-05 05:02:44,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-06-05 05:02:44,702 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:02:44,702 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:02:44,903 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6887,123 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:02:44,903 INFO L430 AbstractCegarLoop]: === Iteration 193 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:02:44,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:02:44,903 INFO L82 PathProgramCache]: Analyzing trace with hash -1267939460, now seen corresponding path program 96 times [2021-06-05 05:02:44,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:02:44,904 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421242030] [2021-06-05 05:02:44,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:02:44,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:02:44,982 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:02:44,983 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:02:44,983 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421242030] [2021-06-05 05:02:44,983 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421242030] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:02:44,983 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039387332] [2021-06-05 05:02:44,983 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 124 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 124 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:02:45,017 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-06-05 05:02:45,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:02:45,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-05 05:02:45,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:02:45,197 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:02:45,197 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2039387332] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:02:45,197 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:02:45,197 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2021-06-05 05:02:45,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994303208] [2021-06-05 05:02:45,198 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 05:02:45,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:02:45,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 05:02:45,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2021-06-05 05:02:45,198 INFO L87 Difference]: Start difference. First operand 412 states and 1240 transitions. Second operand has 15 states, 15 states have (on average 2.2) internal successors, (33), 15 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:45,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:02:45,499 INFO L93 Difference]: Finished difference Result 524 states and 1555 transitions. [2021-06-05 05:02:45,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-05 05:02:45,499 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.2) internal successors, (33), 15 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-06-05 05:02:45,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:02:45,500 INFO L225 Difference]: With dead ends: 524 [2021-06-05 05:02:45,500 INFO L226 Difference]: Without dead ends: 506 [2021-06-05 05:02:45,500 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 294.1ms TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2021-06-05 05:02:45,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2021-06-05 05:02:45,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 413. [2021-06-05 05:02:45,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 412 states have (on average 3.0194174757281553) internal successors, (1244), 412 states have internal predecessors, (1244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:45,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 1244 transitions. [2021-06-05 05:02:45,504 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 1244 transitions. Word has length 22 [2021-06-05 05:02:45,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:02:45,504 INFO L482 AbstractCegarLoop]: Abstraction has 413 states and 1244 transitions. [2021-06-05 05:02:45,504 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.2) internal successors, (33), 15 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:45,504 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 1244 transitions. [2021-06-05 05:02:45,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-06-05 05:02:45,505 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:02:45,505 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:02:45,705 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7118,124 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:02:45,705 INFO L430 AbstractCegarLoop]: === Iteration 194 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:02:45,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:02:45,705 INFO L82 PathProgramCache]: Analyzing trace with hash 2054360358, now seen corresponding path program 97 times [2021-06-05 05:02:45,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:02:45,705 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787937637] [2021-06-05 05:02:45,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:02:45,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:02:45,758 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:02:45,758 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:02:45,758 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787937637] [2021-06-05 05:02:45,759 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787937637] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:02:45,759 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632189535] [2021-06-05 05:02:45,759 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:02:45,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:02:45,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-05 05:02:45,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:02:45,998 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:02:45,998 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1632189535] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:02:45,999 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:02:45,999 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 16 [2021-06-05 05:02:45,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393215062] [2021-06-05 05:02:45,999 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 05:02:45,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:02:45,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 05:02:45,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-06-05 05:02:45,999 INFO L87 Difference]: Start difference. First operand 413 states and 1244 transitions. Second operand has 16 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:46,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:02:46,781 INFO L93 Difference]: Finished difference Result 650 states and 1859 transitions. [2021-06-05 05:02:46,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 05:02:46,781 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-06-05 05:02:46,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:02:46,782 INFO L225 Difference]: With dead ends: 650 [2021-06-05 05:02:46,782 INFO L226 Difference]: Without dead ends: 508 [2021-06-05 05:02:46,782 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 611.8ms TimeCoverageRelationStatistics Valid=182, Invalid=940, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 05:02:46,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2021-06-05 05:02:46,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 397. [2021-06-05 05:02:46,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 396 states have (on average 3.0025252525252526) internal successors, (1189), 396 states have internal predecessors, (1189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:46,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 1189 transitions. [2021-06-05 05:02:46,786 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 1189 transitions. Word has length 22 [2021-06-05 05:02:46,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:02:46,786 INFO L482 AbstractCegarLoop]: Abstraction has 397 states and 1189 transitions. [2021-06-05 05:02:46,786 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:46,786 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 1189 transitions. [2021-06-05 05:02:46,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-06-05 05:02:46,787 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:02:46,787 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:02:46,987 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 125 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7141 [2021-06-05 05:02:46,987 INFO L430 AbstractCegarLoop]: === Iteration 195 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:02:46,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:02:46,988 INFO L82 PathProgramCache]: Analyzing trace with hash -253581261, now seen corresponding path program 98 times [2021-06-05 05:02:46,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:02:46,988 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296218969] [2021-06-05 05:02:46,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:02:46,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:02:47,098 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:02:47,098 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:02:47,098 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296218969] [2021-06-05 05:02:47,098 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296218969] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:02:47,098 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [11950845] [2021-06-05 05:02:47,098 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 126 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 126 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:02:47,134 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 05:02:47,134 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:02:47,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-05 05:02:47,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:02:47,405 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-06-05 05:02:47,405 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [11950845] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:02:47,405 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:02:47,405 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-06-05 05:02:47,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641688217] [2021-06-05 05:02:47,405 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 05:02:47,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:02:47,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 05:02:47,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-06-05 05:02:47,406 INFO L87 Difference]: Start difference. First operand 397 states and 1189 transitions. Second operand has 18 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 18 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:50,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:02:50,079 INFO L93 Difference]: Finished difference Result 1093 states and 3237 transitions. [2021-06-05 05:02:50,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-06-05 05:02:50,080 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 18 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-06-05 05:02:50,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:02:50,081 INFO L225 Difference]: With dead ends: 1093 [2021-06-05 05:02:50,081 INFO L226 Difference]: Without dead ends: 958 [2021-06-05 05:02:50,081 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1022 ImplicationChecksByTransitivity, 2091.0ms TimeCoverageRelationStatistics Valid=434, Invalid=3472, Unknown=0, NotChecked=0, Total=3906 [2021-06-05 05:02:50,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 958 states. [2021-06-05 05:02:50,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 958 to 495. [2021-06-05 05:02:50,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 494 states have (on average 3.1376518218623484) internal successors, (1550), 494 states have internal predecessors, (1550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:50,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 1550 transitions. [2021-06-05 05:02:50,087 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 1550 transitions. Word has length 23 [2021-06-05 05:02:50,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:02:50,087 INFO L482 AbstractCegarLoop]: Abstraction has 495 states and 1550 transitions. [2021-06-05 05:02:50,087 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 18 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:50,087 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 1550 transitions. [2021-06-05 05:02:50,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-06-05 05:02:50,088 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:02:50,088 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:02:50,288 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 126 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7146 [2021-06-05 05:02:50,288 INFO L430 AbstractCegarLoop]: === Iteration 196 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:02:50,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:02:50,289 INFO L82 PathProgramCache]: Analyzing trace with hash -337979531, now seen corresponding path program 99 times [2021-06-05 05:02:50,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:02:50,289 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125541837] [2021-06-05 05:02:50,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:02:50,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:02:50,393 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:02:50,394 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:02:50,394 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125541837] [2021-06-05 05:02:50,394 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125541837] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:02:50,394 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [548178234] [2021-06-05 05:02:50,394 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 127 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 127 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:02:50,428 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-06-05 05:02:50,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:02:50,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-05 05:02:50,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:02:50,618 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:50,618 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:50,622 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:02:50,622 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:50,625 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:02:50,626 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:50,629 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:50,630 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:50,633 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:02:50,634 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:50,637 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:02:50,638 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:50,641 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:50,641 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:50,644 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:50,645 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:50,648 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:50,649 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:50,651 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:50,652 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:50,655 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:50,656 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:50,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:50,660 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:50,663 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:50,664 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:50,667 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:50,667 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:50,671 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:50,671 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:50,674 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:50,675 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:50,678 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:50,678 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:50,681 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:50,682 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:50,684 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:50,685 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:50,688 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:50,688 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:50,691 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:50,691 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:50,694 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:50,695 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:50,697 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:50,698 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:50,700 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:50,701 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:50,703 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:50,704 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:50,706 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:50,707 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:50,723 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:50,724 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:50,729 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:50,730 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:50,735 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:50,736 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:50,740 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:50,740 INFO L550 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:50,744 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:50,745 INFO L550 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:50,748 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:50,749 INFO L550 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:50,752 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:50,752 INFO L550 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:50,755 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:50,756 INFO L550 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:50,940 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 29 [2021-06-05 05:02:50,940 INFO L628 ElimStorePlain]: treesize reduction 32, result has 77.3 percent of original size [2021-06-05 05:02:50,943 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 3 dim-0 vars, and 4 xjuncts. [2021-06-05 05:02:50,943 INFO L247 ElimStorePlain]: Needed 35 recursive calls to eliminate 2 variables, input treesize:1274, output treesize:101 [2021-06-05 05:02:52,291 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_239, char_at_5], 6=[char_at_1]} [2021-06-05 05:02:52,297 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:52,298 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:52,302 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:52,303 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:52,308 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:02:52,309 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:52,314 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:52,314 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:52,319 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:52,320 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:52,324 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:52,325 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:52,330 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:52,331 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:52,336 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:52,337 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:52,342 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:02:52,343 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:52,348 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:52,349 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:52,354 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:52,354 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:52,359 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:52,360 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:52,365 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:52,366 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:52,370 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:52,371 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:52,376 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:52,376 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:52,381 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:52,382 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:52,387 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:52,387 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:52,392 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:52,392 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:52,397 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:52,398 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:52,402 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:52,403 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:52,407 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:52,408 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:52,412 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:52,413 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:52,417 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:52,418 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:52,422 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:52,423 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:52,427 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:52,428 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:52,432 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:52,433 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:52,437 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:52,438 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:52,442 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:52,443 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:52,703 WARN L205 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 65 [2021-06-05 05:02:52,703 INFO L628 ElimStorePlain]: treesize reduction 618, result has 30.3 percent of original size [2021-06-05 05:02:52,707 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:02:52,708 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:52,712 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:02:52,712 INFO L550 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:52,860 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 50 [2021-06-05 05:02:52,860 INFO L628 ElimStorePlain]: treesize reduction 70, result has 71.4 percent of original size [2021-06-05 05:02:52,864 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:02:52,865 INFO L550 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:52,868 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:52,869 INFO L550 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:52,872 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:52,873 INFO L550 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:52,876 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:52,876 INFO L550 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:52,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:52,880 INFO L550 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:52,962 INFO L628 ElimStorePlain]: treesize reduction 22, result has 82.3 percent of original size [2021-06-05 05:02:52,964 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 3 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-06-05 05:02:52,964 INFO L247 ElimStorePlain]: Needed 36 recursive calls to eliminate 7 variables, input treesize:1769, output treesize:37 [2021-06-05 05:02:53,062 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:02:53,062 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [548178234] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:02:53,062 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:02:53,062 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-06-05 05:02:53,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314394130] [2021-06-05 05:02:53,063 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 05:02:53,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:02:53,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 05:02:53,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-06-05 05:02:53,063 INFO L87 Difference]: Start difference. First operand 495 states and 1550 transitions. Second operand has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:53,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:02:53,560 INFO L93 Difference]: Finished difference Result 694 states and 2136 transitions. [2021-06-05 05:02:53,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 05:02:53,560 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-06-05 05:02:53,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:02:53,561 INFO L225 Difference]: With dead ends: 694 [2021-06-05 05:02:53,561 INFO L226 Difference]: Without dead ends: 655 [2021-06-05 05:02:53,561 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 580.0ms TimeCoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2021-06-05 05:02:53,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 655 states. [2021-06-05 05:02:53,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 655 to 498. [2021-06-05 05:02:53,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 497 states have (on average 3.142857142857143) internal successors, (1562), 497 states have internal predecessors, (1562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:53,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 1562 transitions. [2021-06-05 05:02:53,566 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 1562 transitions. Word has length 23 [2021-06-05 05:02:53,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:02:53,566 INFO L482 AbstractCegarLoop]: Abstraction has 498 states and 1562 transitions. [2021-06-05 05:02:53,566 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:53,566 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 1562 transitions. [2021-06-05 05:02:53,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-06-05 05:02:53,567 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:02:53,567 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:02:53,767 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7160,127 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:02:53,767 INFO L430 AbstractCegarLoop]: === Iteration 197 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:02:53,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:02:53,768 INFO L82 PathProgramCache]: Analyzing trace with hash 1381596055, now seen corresponding path program 100 times [2021-06-05 05:02:53,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:02:53,768 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133744205] [2021-06-05 05:02:53,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:02:53,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:02:53,878 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:02:53,878 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:02:53,878 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133744205] [2021-06-05 05:02:53,878 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133744205] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:02:53,879 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [243695381] [2021-06-05 05:02:53,879 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 128 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 128 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:02:53,915 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 05:02:53,915 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:02:53,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-05 05:02:53,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:02:54,088 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:02:54,088 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [243695381] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:02:54,088 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:02:54,088 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-06-05 05:02:54,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321581542] [2021-06-05 05:02:54,088 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 05:02:54,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:02:54,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 05:02:54,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-06-05 05:02:54,089 INFO L87 Difference]: Start difference. First operand 498 states and 1562 transitions. Second operand has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 18 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:55,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:02:55,726 INFO L93 Difference]: Finished difference Result 1044 states and 3202 transitions. [2021-06-05 05:02:55,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-05 05:02:55,727 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 18 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-06-05 05:02:55,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:02:55,728 INFO L225 Difference]: With dead ends: 1044 [2021-06-05 05:02:55,728 INFO L226 Difference]: Without dead ends: 910 [2021-06-05 05:02:55,728 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 844 ImplicationChecksByTransitivity, 1125.5ms TimeCoverageRelationStatistics Valid=321, Invalid=2871, Unknown=0, NotChecked=0, Total=3192 [2021-06-05 05:02:55,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 910 states. [2021-06-05 05:02:55,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 910 to 535. [2021-06-05 05:02:55,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 535 states, 534 states have (on average 3.1816479400749063) internal successors, (1699), 534 states have internal predecessors, (1699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:55,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 1699 transitions. [2021-06-05 05:02:55,734 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 1699 transitions. Word has length 23 [2021-06-05 05:02:55,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:02:55,735 INFO L482 AbstractCegarLoop]: Abstraction has 535 states and 1699 transitions. [2021-06-05 05:02:55,735 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 18 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:55,735 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 1699 transitions. [2021-06-05 05:02:55,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-06-05 05:02:55,735 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:02:55,735 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:02:55,935 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 128 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7408 [2021-06-05 05:02:55,936 INFO L430 AbstractCegarLoop]: === Iteration 198 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:02:55,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:02:55,936 INFO L82 PathProgramCache]: Analyzing trace with hash 1664021435, now seen corresponding path program 101 times [2021-06-05 05:02:55,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:02:55,936 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254095168] [2021-06-05 05:02:55,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:02:55,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:02:56,035 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:02:56,036 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:02:56,036 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254095168] [2021-06-05 05:02:56,036 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254095168] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:02:56,036 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [912452081] [2021-06-05 05:02:56,036 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 129 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 129 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:02:56,079 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 05:02:56,079 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:02:56,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-05 05:02:56,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:02:56,260 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:02:56,260 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [912452081] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:02:56,261 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:02:56,261 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-06-05 05:02:56,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026356082] [2021-06-05 05:02:56,261 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 05:02:56,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:02:56,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 05:02:56,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2021-06-05 05:02:56,261 INFO L87 Difference]: Start difference. First operand 535 states and 1699 transitions. Second operand has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 18 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:57,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:02:57,606 INFO L93 Difference]: Finished difference Result 1051 states and 3205 transitions. [2021-06-05 05:02:57,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-05 05:02:57,606 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 18 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-06-05 05:02:57,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:02:57,607 INFO L225 Difference]: With dead ends: 1051 [2021-06-05 05:02:57,607 INFO L226 Difference]: Without dead ends: 916 [2021-06-05 05:02:57,608 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 563 ImplicationChecksByTransitivity, 970.1ms TimeCoverageRelationStatistics Valid=258, Invalid=2094, Unknown=0, NotChecked=0, Total=2352 [2021-06-05 05:02:57,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 916 states. [2021-06-05 05:02:57,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 916 to 531. [2021-06-05 05:02:57,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 531 states, 530 states have (on average 3.1660377358490566) internal successors, (1678), 530 states have internal predecessors, (1678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:57,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 1678 transitions. [2021-06-05 05:02:57,614 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 1678 transitions. Word has length 23 [2021-06-05 05:02:57,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:02:57,614 INFO L482 AbstractCegarLoop]: Abstraction has 531 states and 1678 transitions. [2021-06-05 05:02:57,614 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 18 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:57,615 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 1678 transitions. [2021-06-05 05:02:57,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-06-05 05:02:57,615 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:02:57,615 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:02:57,815 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 129 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7422 [2021-06-05 05:02:57,816 INFO L430 AbstractCegarLoop]: === Iteration 199 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:02:57,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:02:57,816 INFO L82 PathProgramCache]: Analyzing trace with hash -808752905, now seen corresponding path program 102 times [2021-06-05 05:02:57,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:02:57,816 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074071593] [2021-06-05 05:02:57,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:02:57,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:02:57,959 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:02:57,959 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:02:57,959 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074071593] [2021-06-05 05:02:57,959 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074071593] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:02:57,959 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491151220] [2021-06-05 05:02:57,959 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 130 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 130 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:02:58,033 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 05:02:58,034 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:02:58,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-05 05:02:58,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:02:58,132 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:58,133 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:58,136 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:58,137 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:58,140 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:02:58,141 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:58,144 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:58,144 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:58,148 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:58,148 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:58,151 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:58,152 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:58,155 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:58,155 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:58,159 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:02:58,159 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:58,162 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:58,163 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:58,166 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:58,167 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:58,169 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:58,170 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:58,173 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:58,173 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:58,176 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:58,176 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:58,179 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:02:58,180 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:58,183 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:58,183 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:58,186 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:58,187 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:58,190 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:58,191 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:58,193 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:58,194 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:58,196 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:58,197 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:58,200 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:58,200 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:58,203 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:58,203 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:58,206 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:58,207 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:58,209 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:58,210 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:58,212 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:58,213 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:58,215 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:02:58,216 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:58,307 INFO L628 ElimStorePlain]: treesize reduction 92, result has 54.2 percent of original size [2021-06-05 05:02:58,310 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 3 dim-0 vars, and 4 xjuncts. [2021-06-05 05:02:58,310 INFO L247 ElimStorePlain]: Needed 26 recursive calls to eliminate 2 variables, input treesize:923, output treesize:101 [2021-06-05 05:02:59,306 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_242, char_at_5], 6=[char_at_1]} [2021-06-05 05:02:59,312 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:59,313 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:59,319 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:59,320 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:59,327 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:59,327 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:59,333 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:02:59,335 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:59,341 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:02:59,342 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:59,350 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:02:59,351 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:59,357 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:59,358 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:59,364 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:59,365 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:59,372 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:59,372 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:59,378 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:02:59,380 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:59,386 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:02:59,388 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:59,394 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:02:59,395 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:59,859 WARN L205 SmtUtils]: Spent 464.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 67 [2021-06-05 05:02:59,860 INFO L628 ElimStorePlain]: treesize reduction 834, result has 34.7 percent of original size [2021-06-05 05:02:59,864 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:59,865 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:59,868 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:59,869 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:59,873 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:59,874 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:59,877 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:59,878 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:59,881 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:02:59,882 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:59,885 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:59,886 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:59,889 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:59,890 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:59,893 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:59,894 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:00,045 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2021-06-05 05:03:00,045 INFO L628 ElimStorePlain]: treesize reduction 120, result has 59.3 percent of original size [2021-06-05 05:03:00,049 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:03:00,050 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:00,053 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:03:00,054 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:00,057 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:03:00,057 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:00,060 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:00,061 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:00,061 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:03:00,062 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:00,065 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:00,065 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:00,144 INFO L628 ElimStorePlain]: treesize reduction 22, result has 82.3 percent of original size [2021-06-05 05:03:00,146 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 3 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-06-05 05:03:00,146 INFO L247 ElimStorePlain]: Needed 26 recursive calls to eliminate 7 variables, input treesize:1685, output treesize:37 [2021-06-05 05:03:00,248 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:03:00,249 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491151220] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:03:00,249 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:03:00,249 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-06-05 05:03:00,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550001931] [2021-06-05 05:03:00,249 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 05:03:00,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:03:00,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 05:03:00,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-06-05 05:03:00,249 INFO L87 Difference]: Start difference. First operand 531 states and 1678 transitions. Second operand has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:03:00,615 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2021-06-05 05:03:00,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:03:00,762 INFO L93 Difference]: Finished difference Result 762 states and 2325 transitions. [2021-06-05 05:03:00,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-05 05:03:00,762 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-06-05 05:03:00,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:03:00,763 INFO L225 Difference]: With dead ends: 762 [2021-06-05 05:03:00,763 INFO L226 Difference]: Without dead ends: 684 [2021-06-05 05:03:00,763 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 635.3ms TimeCoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2021-06-05 05:03:00,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2021-06-05 05:03:00,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 531. [2021-06-05 05:03:00,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 531 states, 530 states have (on average 3.1660377358490566) internal successors, (1678), 530 states have internal predecessors, (1678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:03:00,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 1678 transitions. [2021-06-05 05:03:00,768 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 1678 transitions. Word has length 23 [2021-06-05 05:03:00,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:03:00,768 INFO L482 AbstractCegarLoop]: Abstraction has 531 states and 1678 transitions. [2021-06-05 05:03:00,769 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:03:00,769 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 1678 transitions. [2021-06-05 05:03:00,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-06-05 05:03:00,769 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:03:00,769 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:03:00,969 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 130 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7433 [2021-06-05 05:03:00,970 INFO L430 AbstractCegarLoop]: === Iteration 200 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:03:00,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:03:00,970 INFO L82 PathProgramCache]: Analyzing trace with hash 1290903787, now seen corresponding path program 103 times [2021-06-05 05:03:00,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:03:00,970 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072601804] [2021-06-05 05:03:00,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:03:00,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:03:01,081 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:03:01,081 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:03:01,081 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072601804] [2021-06-05 05:03:01,081 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072601804] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:03:01,081 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425271832] [2021-06-05 05:03:01,081 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 131 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 131 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:03:01,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:03:01,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 22 conjunts are in the unsatisfiable core [2021-06-05 05:03:01,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:03:01,239 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:03:01,239 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:01,242 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:01,243 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:01,246 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:03:01,247 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:01,250 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:03:01,251 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:01,253 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:01,254 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:01,257 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:03:01,258 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:01,269 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:03:01,270 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:01,272 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:01,273 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:01,276 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:03:01,277 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:01,280 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:03:01,281 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:01,284 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:01,284 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:01,287 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:01,288 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:01,290 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:01,291 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:01,293 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:01,294 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:01,297 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:03:01,298 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:01,301 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:01,301 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:01,304 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:01,305 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:01,307 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:01,308 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:01,310 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:01,311 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:01,313 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:01,314 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:01,317 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:01,317 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:01,320 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:01,320 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:01,323 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:01,323 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:01,326 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:01,326 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:01,329 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:01,329 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:01,331 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:01,332 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:01,334 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:01,335 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:01,415 INFO L628 ElimStorePlain]: treesize reduction 81, result has 54.5 percent of original size [2021-06-05 05:03:01,418 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 3 dim-0 vars, and 4 xjuncts. [2021-06-05 05:03:01,418 INFO L247 ElimStorePlain]: Needed 28 recursive calls to eliminate 2 variables, input treesize:918, output treesize:89 [2021-06-05 05:03:02,439 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:02,439 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:02,439 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:03:02,440 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:02,445 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:02,445 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:02,445 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:03:02,446 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:02,450 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:02,450 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:02,454 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:02,454 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:02,458 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:02,458 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:02,641 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 52 [2021-06-05 05:03:02,642 INFO L628 ElimStorePlain]: treesize reduction 315, result has 33.0 percent of original size [2021-06-05 05:03:02,645 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:02,645 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:03:02,646 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:02,711 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:03:02,714 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:03:02,715 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:02,717 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:03:02,718 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:02,779 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:03:02,781 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 05:03:02,781 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 6 variables, input treesize:588, output treesize:70 [2021-06-05 05:03:02,916 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:03:02,917 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [425271832] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:03:02,917 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:03:02,917 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-06-05 05:03:02,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038694330] [2021-06-05 05:03:02,917 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 05:03:02,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:03:02,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 05:03:02,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-06-05 05:03:02,917 INFO L87 Difference]: Start difference. First operand 531 states and 1678 transitions. Second operand has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:03:03,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:03:03,336 INFO L93 Difference]: Finished difference Result 1066 states and 3189 transitions. [2021-06-05 05:03:03,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-05 05:03:03,336 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-06-05 05:03:03,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:03:03,338 INFO L225 Difference]: With dead ends: 1066 [2021-06-05 05:03:03,338 INFO L226 Difference]: Without dead ends: 925 [2021-06-05 05:03:03,338 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 17 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 517.5ms TimeCoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2021-06-05 05:03:03,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 925 states. [2021-06-05 05:03:03,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 925 to 585. [2021-06-05 05:03:03,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 584 states have (on average 3.2482876712328768) internal successors, (1897), 584 states have internal predecessors, (1897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:03:03,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 1897 transitions. [2021-06-05 05:03:03,345 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 1897 transitions. Word has length 23 [2021-06-05 05:03:03,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:03:03,345 INFO L482 AbstractCegarLoop]: Abstraction has 585 states and 1897 transitions. [2021-06-05 05:03:03,345 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:03:03,345 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 1897 transitions. [2021-06-05 05:03:03,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-06-05 05:03:03,345 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:03:03,345 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:03:03,546 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7628,131 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:03:03,546 INFO L430 AbstractCegarLoop]: === Iteration 201 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:03:03,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:03:03,546 INFO L82 PathProgramCache]: Analyzing trace with hash -1709230313, now seen corresponding path program 104 times [2021-06-05 05:03:03,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:03:03,547 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083712029] [2021-06-05 05:03:03,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:03:03,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:03:03,666 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:03:03,667 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:03:03,667 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083712029] [2021-06-05 05:03:03,667 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083712029] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:03:03,667 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2027125182] [2021-06-05 05:03:03,667 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 132 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 132 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:03:03,701 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 05:03:03,701 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:03:03,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-05 05:03:03,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:03:03,814 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:03:03,815 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:03,818 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:03,819 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:03,822 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:03:03,822 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:03,825 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:03,826 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:03,829 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:03:03,830 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:03,832 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:03,833 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:03,836 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:03,837 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:03,840 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:03:03,840 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:03,843 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:03,844 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:03,846 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:03,847 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:03,850 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:03,850 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:03,854 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:03:03,854 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:03,857 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:03,858 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:03,860 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:03,861 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:03,864 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:03:03,865 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:03,868 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:03,868 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:03,871 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:03,872 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:03,874 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:03:03,875 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:03,878 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:03,879 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:03,881 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:03:03,882 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:03,885 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:03,885 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:03,888 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:03,889 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:03,891 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:03:03,892 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:03,895 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:03,896 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:03,898 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:03,899 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:03,901 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:03,902 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:03,904 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:03,905 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:03,907 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:03,907 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:03,910 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:03:03,911 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:03,993 INFO L628 ElimStorePlain]: treesize reduction 87, result has 52.7 percent of original size [2021-06-05 05:03:03,995 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 3 dim-0 vars, and 4 xjuncts. [2021-06-05 05:03:03,996 INFO L247 ElimStorePlain]: Needed 30 recursive calls to eliminate 2 variables, input treesize:993, output treesize:89 [2021-06-05 05:03:04,486 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:03:04,486 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2027125182] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:03:04,486 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:03:04,486 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-06-05 05:03:04,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527561886] [2021-06-05 05:03:04,487 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 05:03:04,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:03:04,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 05:03:04,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-06-05 05:03:04,487 INFO L87 Difference]: Start difference. First operand 585 states and 1897 transitions. Second operand has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:03:04,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:03:04,868 INFO L93 Difference]: Finished difference Result 834 states and 2620 transitions. [2021-06-05 05:03:04,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 05:03:04,868 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-06-05 05:03:04,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:03:04,869 INFO L225 Difference]: With dead ends: 834 [2021-06-05 05:03:04,869 INFO L226 Difference]: Without dead ends: 787 [2021-06-05 05:03:04,869 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 17 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 479.8ms TimeCoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2021-06-05 05:03:04,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2021-06-05 05:03:04,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 585. [2021-06-05 05:03:04,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 584 states have (on average 3.2482876712328768) internal successors, (1897), 584 states have internal predecessors, (1897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:03:04,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 1897 transitions. [2021-06-05 05:03:04,875 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 1897 transitions. Word has length 23 [2021-06-05 05:03:04,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:03:04,876 INFO L482 AbstractCegarLoop]: Abstraction has 585 states and 1897 transitions. [2021-06-05 05:03:04,876 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:03:04,876 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 1897 transitions. [2021-06-05 05:03:04,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-06-05 05:03:04,877 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:03:04,877 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:03:05,092 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7941,132 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:03:05,093 INFO L430 AbstractCegarLoop]: === Iteration 202 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:03:05,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:03:05,093 INFO L82 PathProgramCache]: Analyzing trace with hash -1135978479, now seen corresponding path program 105 times [2021-06-05 05:03:05,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:03:05,093 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393451515] [2021-06-05 05:03:05,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:03:05,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:03:05,241 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:03:05,241 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:03:05,241 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393451515] [2021-06-05 05:03:05,241 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393451515] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:03:05,241 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674129824] [2021-06-05 05:03:05,241 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 133 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 133 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:03:05,275 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 05:03:05,275 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:03:05,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 05:03:05,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:03:05,708 WARN L205 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2021-06-05 05:03:08,076 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:08,077 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:08,077 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:03:08,078 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:08,091 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:08,091 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:08,106 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:08,107 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:08,107 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:03:08,108 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:08,123 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:08,123 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:08,124 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:03:08,124 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:08,141 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:08,142 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:08,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:03:08,143 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:08,160 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:08,161 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:08,161 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:03:08,162 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:08,177 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:08,177 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:08,178 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:03:08,178 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:08,191 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:08,192 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:08,204 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:08,205 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:08,222 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:08,222 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:08,222 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:03:08,223 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:08,239 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:08,239 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:08,239 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:03:08,240 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:08,257 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:03:08,258 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:08,276 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:08,277 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:08,277 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:03:08,278 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:08,297 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:08,297 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:08,298 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 7 [2021-06-05 05:03:08,298 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:08,312 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:08,312 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:08,329 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:08,330 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:08,330 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:03:08,331 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:08,349 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:03:08,350 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:08,364 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:08,364 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:08,381 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:08,382 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:08,382 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2021-06-05 05:03:08,383 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:08,400 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:08,401 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:08,417 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:08,418 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:08,418 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:03:08,419 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:08,433 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:08,433 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:08,450 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:08,450 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:08,451 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:03:08,452 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:08,471 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:08,471 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:08,472 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 7 [2021-06-05 05:03:08,473 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:08,494 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:08,495 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:08,514 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:08,515 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:08,515 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:03:08,516 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:08,536 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:08,537 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:08,537 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:03:08,538 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:08,556 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:08,557 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:08,557 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:03:08,557 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:08,576 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:08,576 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:08,577 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:03:08,577 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:08,597 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:08,598 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:08,598 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:03:08,599 INFO L550 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:08,617 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:08,618 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:08,618 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 9 [2021-06-05 05:03:08,619 INFO L550 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:08,638 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:08,639 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:08,639 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:03:08,640 INFO L550 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:08,661 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:08,661 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:08,662 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:03:08,662 INFO L550 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:08,683 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:08,683 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:08,684 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:03:08,684 INFO L550 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:08,705 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:08,705 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:08,706 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:03:08,706 INFO L550 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:08,726 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:08,726 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:08,727 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:03:08,727 INFO L550 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:08,747 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:08,748 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:08,748 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:03:08,749 INFO L550 ElimStorePlain]: Start of recursive call 38: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:08,769 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:08,770 INFO L550 ElimStorePlain]: Start of recursive call 39: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:08,789 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:08,789 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:08,790 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:03:08,790 INFO L550 ElimStorePlain]: Start of recursive call 40: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:08,811 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:08,812 INFO L550 ElimStorePlain]: Start of recursive call 41: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:08,833 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:08,834 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:08,834 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:03:08,835 INFO L550 ElimStorePlain]: Start of recursive call 42: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:08,856 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:08,856 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:08,857 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:03:08,858 INFO L550 ElimStorePlain]: Start of recursive call 43: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:08,878 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:08,879 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:08,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:03:08,880 INFO L550 ElimStorePlain]: Start of recursive call 44: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:08,901 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:03:08,902 INFO L550 ElimStorePlain]: Start of recursive call 45: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:08,924 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:08,924 INFO L550 ElimStorePlain]: Start of recursive call 46: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:08,944 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:08,945 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:08,945 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2021-06-05 05:03:08,946 INFO L550 ElimStorePlain]: Start of recursive call 47: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:08,966 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:08,966 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:08,966 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2021-06-05 05:03:08,967 INFO L550 ElimStorePlain]: Start of recursive call 48: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:08,992 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:08,992 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:08,993 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 7 [2021-06-05 05:03:08,993 INFO L550 ElimStorePlain]: Start of recursive call 49: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:09,015 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:09,015 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:09,015 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 9 [2021-06-05 05:03:09,016 INFO L550 ElimStorePlain]: Start of recursive call 50: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:09,037 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:03:09,039 INFO L550 ElimStorePlain]: Start of recursive call 51: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:09,060 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:09,060 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:09,060 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:03:09,061 INFO L550 ElimStorePlain]: Start of recursive call 52: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:09,082 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:09,083 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:09,083 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2021-06-05 05:03:09,084 INFO L550 ElimStorePlain]: Start of recursive call 53: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:09,105 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:03:09,106 INFO L550 ElimStorePlain]: Start of recursive call 54: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:09,127 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:09,128 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:09,128 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:03:09,129 INFO L550 ElimStorePlain]: Start of recursive call 55: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:09,147 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:09,148 INFO L550 ElimStorePlain]: Start of recursive call 56: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:09,198 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:09,198 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:09,199 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:03:09,199 INFO L550 ElimStorePlain]: Start of recursive call 57: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:09,212 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:09,213 INFO L550 ElimStorePlain]: Start of recursive call 58: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:09,228 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:09,228 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:09,228 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:03:09,229 INFO L550 ElimStorePlain]: Start of recursive call 59: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:09,242 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:09,243 INFO L550 ElimStorePlain]: Start of recursive call 60: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:09,257 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:09,258 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:09,258 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:03:09,259 INFO L550 ElimStorePlain]: Start of recursive call 61: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:09,270 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:09,270 INFO L550 ElimStorePlain]: Start of recursive call 62: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:09,284 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:03:09,285 INFO L550 ElimStorePlain]: Start of recursive call 63: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:09,301 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:09,301 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:09,302 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:03:09,303 INFO L550 ElimStorePlain]: Start of recursive call 64: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:09,319 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:09,320 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:09,320 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:03:09,321 INFO L550 ElimStorePlain]: Start of recursive call 65: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:09,335 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:03:09,336 INFO L550 ElimStorePlain]: Start of recursive call 66: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:09,349 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:09,350 INFO L550 ElimStorePlain]: Start of recursive call 67: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:09,364 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:09,365 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:09,365 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2021-06-05 05:03:09,366 INFO L550 ElimStorePlain]: Start of recursive call 68: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:09,379 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:09,379 INFO L550 ElimStorePlain]: Start of recursive call 69: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:09,393 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:09,393 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:09,394 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:03:09,395 INFO L550 ElimStorePlain]: Start of recursive call 70: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:09,410 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:09,410 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:09,411 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:03:09,412 INFO L550 ElimStorePlain]: Start of recursive call 71: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:09,423 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:09,424 INFO L550 ElimStorePlain]: Start of recursive call 72: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:09,437 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:09,437 INFO L550 ElimStorePlain]: Start of recursive call 73: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:09,451 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:09,451 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:09,452 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:03:09,452 INFO L550 ElimStorePlain]: Start of recursive call 74: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:09,466 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:09,466 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:09,467 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2021-06-05 05:03:09,467 INFO L550 ElimStorePlain]: Start of recursive call 75: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:09,480 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:09,481 INFO L550 ElimStorePlain]: Start of recursive call 76: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:09,495 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:03:09,496 INFO L550 ElimStorePlain]: Start of recursive call 77: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:09,511 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:09,512 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:09,512 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:03:09,513 INFO L550 ElimStorePlain]: Start of recursive call 78: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:09,527 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:09,528 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:09,528 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 9 [2021-06-05 05:03:09,529 INFO L550 ElimStorePlain]: Start of recursive call 79: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:09,545 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:09,546 INFO L550 ElimStorePlain]: Start of recursive call 80: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:09,560 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:09,560 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:09,561 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:03:09,561 INFO L550 ElimStorePlain]: Start of recursive call 81: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:09,576 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:09,576 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:09,577 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:03:09,577 INFO L550 ElimStorePlain]: Start of recursive call 82: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:09,592 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:09,593 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:09,593 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:03:09,594 INFO L550 ElimStorePlain]: Start of recursive call 83: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:09,610 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:03:09,612 INFO L550 ElimStorePlain]: Start of recursive call 84: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:09,628 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:09,629 INFO L550 ElimStorePlain]: Start of recursive call 85: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:09,646 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:09,646 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:09,647 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:03:09,647 INFO L550 ElimStorePlain]: Start of recursive call 86: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:09,661 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:09,661 INFO L550 ElimStorePlain]: Start of recursive call 87: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:09,675 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:09,676 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:09,676 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:03:09,677 INFO L550 ElimStorePlain]: Start of recursive call 88: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:09,695 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:09,695 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:09,696 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:03:09,697 INFO L550 ElimStorePlain]: Start of recursive call 89: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:09,713 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:09,714 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:09,714 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2021-06-05 05:03:09,715 INFO L550 ElimStorePlain]: Start of recursive call 90: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:09,730 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:09,731 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:09,731 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:03:09,732 INFO L550 ElimStorePlain]: Start of recursive call 91: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:09,749 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:09,750 INFO L550 ElimStorePlain]: Start of recursive call 92: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:09,767 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:09,768 INFO L550 ElimStorePlain]: Start of recursive call 93: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:09,784 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:09,784 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:09,785 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:03:09,785 INFO L550 ElimStorePlain]: Start of recursive call 94: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:09,802 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:09,803 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:09,803 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:03:09,804 INFO L550 ElimStorePlain]: Start of recursive call 95: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:09,821 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:09,822 INFO L550 ElimStorePlain]: Start of recursive call 96: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:09,837 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:09,837 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:09,838 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:03:09,839 INFO L550 ElimStorePlain]: Start of recursive call 97: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:09,855 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:09,855 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:09,855 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 7 [2021-06-05 05:03:09,856 INFO L550 ElimStorePlain]: Start of recursive call 98: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:09,872 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:09,873 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:09,873 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:03:09,874 INFO L550 ElimStorePlain]: Start of recursive call 99: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:09,891 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:09,891 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:09,892 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:03:09,892 INFO L550 ElimStorePlain]: Start of recursive call 100: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:09,909 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:03:09,910 INFO L550 ElimStorePlain]: Start of recursive call 101: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:09,925 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:09,926 INFO L550 ElimStorePlain]: Start of recursive call 102: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:09,939 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:09,940 INFO L550 ElimStorePlain]: Start of recursive call 103: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:09,955 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:09,956 INFO L550 ElimStorePlain]: Start of recursive call 104: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:09,972 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:09,972 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:09,972 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:03:09,973 INFO L550 ElimStorePlain]: Start of recursive call 105: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:09,989 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:09,990 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:09,990 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 7 [2021-06-05 05:03:09,991 INFO L550 ElimStorePlain]: Start of recursive call 106: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:10,007 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:10,007 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:10,008 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:03:10,008 INFO L550 ElimStorePlain]: Start of recursive call 107: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:10,026 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:10,026 INFO L550 ElimStorePlain]: Start of recursive call 108: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:10,041 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:10,042 INFO L550 ElimStorePlain]: Start of recursive call 109: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:10,055 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:10,056 INFO L550 ElimStorePlain]: Start of recursive call 110: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:10,071 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:10,072 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:10,072 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:03:10,073 INFO L550 ElimStorePlain]: Start of recursive call 111: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:10,088 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:10,089 INFO L550 ElimStorePlain]: Start of recursive call 112: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:10,107 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:10,107 INFO L550 ElimStorePlain]: Start of recursive call 113: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:10,124 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:10,124 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:10,125 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2021-06-05 05:03:10,125 INFO L550 ElimStorePlain]: Start of recursive call 114: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:10,142 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:10,143 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:10,143 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:03:10,144 INFO L550 ElimStorePlain]: Start of recursive call 115: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:10,160 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:10,160 INFO L550 ElimStorePlain]: Start of recursive call 116: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:10,177 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:10,177 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:10,177 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:03:10,178 INFO L550 ElimStorePlain]: Start of recursive call 117: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:10,196 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:10,197 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:10,197 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:03:10,198 INFO L550 ElimStorePlain]: Start of recursive call 118: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:10,216 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:10,217 INFO L550 ElimStorePlain]: Start of recursive call 119: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:10,232 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:10,233 INFO L550 ElimStorePlain]: Start of recursive call 120: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:10,250 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:10,251 INFO L550 ElimStorePlain]: Start of recursive call 121: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:10,269 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:10,269 INFO L550 ElimStorePlain]: Start of recursive call 122: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:10,287 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:10,287 INFO L550 ElimStorePlain]: Start of recursive call 123: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:10,306 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:10,306 INFO L550 ElimStorePlain]: Start of recursive call 124: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:10,321 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:10,322 INFO L550 ElimStorePlain]: Start of recursive call 125: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:10,341 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:10,341 INFO L550 ElimStorePlain]: Start of recursive call 126: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:10,359 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:10,360 INFO L550 ElimStorePlain]: Start of recursive call 127: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:10,378 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:10,378 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:10,379 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:03:10,380 INFO L550 ElimStorePlain]: Start of recursive call 128: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:10,399 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:10,400 INFO L550 ElimStorePlain]: Start of recursive call 129: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:10,418 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:10,419 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:10,419 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:03:10,420 INFO L550 ElimStorePlain]: Start of recursive call 130: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:10,438 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:10,439 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:10,439 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:03:10,440 INFO L550 ElimStorePlain]: Start of recursive call 131: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:10,459 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:10,460 INFO L550 ElimStorePlain]: Start of recursive call 132: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:10,475 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:10,476 INFO L550 ElimStorePlain]: Start of recursive call 133: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:10,493 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:10,494 INFO L550 ElimStorePlain]: Start of recursive call 134: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:10,513 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:10,514 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:10,514 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:03:10,515 INFO L550 ElimStorePlain]: Start of recursive call 135: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:10,531 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:10,532 INFO L550 ElimStorePlain]: Start of recursive call 136: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:10,551 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:10,552 INFO L550 ElimStorePlain]: Start of recursive call 137: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:10,570 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:10,570 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:10,570 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2021-06-05 05:03:10,571 INFO L550 ElimStorePlain]: Start of recursive call 138: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:10,592 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:10,592 INFO L550 ElimStorePlain]: Start of recursive call 139: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:10,611 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:10,612 INFO L550 ElimStorePlain]: Start of recursive call 140: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:10,627 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:10,628 INFO L550 ElimStorePlain]: Start of recursive call 141: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:10,645 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:10,646 INFO L550 ElimStorePlain]: Start of recursive call 142: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:10,665 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:10,666 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:10,666 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:03:10,667 INFO L550 ElimStorePlain]: Start of recursive call 143: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:10,686 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:10,686 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:10,686 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:03:10,687 INFO L550 ElimStorePlain]: Start of recursive call 144: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:10,706 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:10,707 INFO L550 ElimStorePlain]: Start of recursive call 145: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:10,725 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:10,726 INFO L550 ElimStorePlain]: Start of recursive call 146: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:10,744 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:10,745 INFO L550 ElimStorePlain]: Start of recursive call 147: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:10,764 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:10,765 INFO L550 ElimStorePlain]: Start of recursive call 148: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:10,784 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:10,784 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:10,785 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:03:10,785 INFO L550 ElimStorePlain]: Start of recursive call 149: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:10,804 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:10,805 INFO L550 ElimStorePlain]: Start of recursive call 150: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:10,824 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:10,825 INFO L550 ElimStorePlain]: Start of recursive call 151: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:10,849 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:10,850 INFO L550 ElimStorePlain]: Start of recursive call 152: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:10,866 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:10,866 INFO L550 ElimStorePlain]: Start of recursive call 153: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:10,885 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:10,886 INFO L550 ElimStorePlain]: Start of recursive call 154: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:10,905 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:10,905 INFO L550 ElimStorePlain]: Start of recursive call 155: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:10,924 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:10,924 INFO L550 ElimStorePlain]: Start of recursive call 156: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:10,943 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:10,943 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:10,944 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2021-06-05 05:03:10,944 INFO L550 ElimStorePlain]: Start of recursive call 157: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:10,963 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:10,964 INFO L550 ElimStorePlain]: Start of recursive call 158: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:10,983 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:10,983 INFO L550 ElimStorePlain]: Start of recursive call 159: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:11,003 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:11,003 INFO L550 ElimStorePlain]: Start of recursive call 160: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:11,020 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:11,021 INFO L550 ElimStorePlain]: Start of recursive call 161: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:11,039 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:11,039 INFO L550 ElimStorePlain]: Start of recursive call 162: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:11,060 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:11,061 INFO L550 ElimStorePlain]: Start of recursive call 163: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:11,081 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:11,082 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:11,082 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:03:11,083 INFO L550 ElimStorePlain]: Start of recursive call 164: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:11,103 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:11,103 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:11,104 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2021-06-05 05:03:11,104 INFO L550 ElimStorePlain]: Start of recursive call 165: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:11,123 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:11,124 INFO L550 ElimStorePlain]: Start of recursive call 166: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:11,143 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:11,144 INFO L550 ElimStorePlain]: Start of recursive call 167: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:11,161 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:11,162 INFO L550 ElimStorePlain]: Start of recursive call 168: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:11,181 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:11,182 INFO L550 ElimStorePlain]: Start of recursive call 169: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:11,201 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:11,202 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:11,202 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:03:11,202 INFO L550 ElimStorePlain]: Start of recursive call 170: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:11,222 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:11,222 INFO L550 ElimStorePlain]: Start of recursive call 171: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:11,242 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:11,243 INFO L550 ElimStorePlain]: Start of recursive call 172: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:11,262 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:11,263 INFO L550 ElimStorePlain]: Start of recursive call 173: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:11,280 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:11,281 INFO L550 ElimStorePlain]: Start of recursive call 174: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:11,298 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:11,299 INFO L550 ElimStorePlain]: Start of recursive call 175: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:11,318 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:11,319 INFO L550 ElimStorePlain]: Start of recursive call 176: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:11,341 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:11,342 INFO L550 ElimStorePlain]: Start of recursive call 177: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:11,363 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:11,363 INFO L550 ElimStorePlain]: Start of recursive call 178: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:11,383 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:11,384 INFO L550 ElimStorePlain]: Start of recursive call 179: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:11,404 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:11,405 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:11,405 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2021-06-05 05:03:11,406 INFO L550 ElimStorePlain]: Start of recursive call 180: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:11,427 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:11,427 INFO L550 ElimStorePlain]: Start of recursive call 181: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:11,447 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:11,448 INFO L550 ElimStorePlain]: Start of recursive call 182: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:11,467 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:11,468 INFO L550 ElimStorePlain]: Start of recursive call 183: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:11,489 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:11,490 INFO L550 ElimStorePlain]: Start of recursive call 184: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:11,506 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:11,507 INFO L550 ElimStorePlain]: Start of recursive call 185: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:11,524 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:11,524 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:11,525 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:03:11,525 INFO L550 ElimStorePlain]: Start of recursive call 186: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:11,570 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:11,571 INFO L550 ElimStorePlain]: Start of recursive call 187: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:11,578 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:11,579 INFO L550 ElimStorePlain]: Start of recursive call 188: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:11,586 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:11,587 INFO L550 ElimStorePlain]: Start of recursive call 189: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:11,594 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:11,595 INFO L550 ElimStorePlain]: Start of recursive call 190: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:12,666 WARN L205 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 139 DAG size of output: 128 [2021-06-05 05:03:12,667 INFO L628 ElimStorePlain]: treesize reduction 617, result has 62.4 percent of original size [2021-06-05 05:03:12,686 INFO L550 ElimStorePlain]: Start of recursive call 1: 10 dim-0 vars, 1 dim-1 vars, End of recursive call: 39 dim-0 vars, and 24 xjuncts. [2021-06-05 05:03:12,686 INFO L247 ElimStorePlain]: Needed 190 recursive calls to eliminate 11 variables, input treesize:11167, output treesize:951 [2021-06-05 05:03:13,255 WARN L205 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 432 DAG size of output: 279 [2021-06-05 05:03:13,793 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 258 [2021-06-05 05:03:14,456 WARN L205 SmtUtils]: Spent 524.00 ms on a formula simplification. DAG size of input: 293 DAG size of output: 296 [2021-06-05 05:03:15,714 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_309, v_prenex_313, v_prenex_302], 1=[char_at_1, v_prenex_290, v_prenex_292, v_prenex_294, v_prenex_296, v_prenex_286, v_prenex_298, v_prenex_288, v_prenex_310, v_prenex_311, v_prenex_300, v_prenex_312, v_prenex_314, v_prenex_315, v_prenex_304, v_prenex_305, v_prenex_316, v_prenex_306, v_prenex_317, v_prenex_307, v_prenex_308]} [2021-06-05 05:03:15,727 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:03:15,728 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:16,360 WARN L205 SmtUtils]: Spent 630.00 ms on a formula simplification. DAG size of input: 358 DAG size of output: 182 [2021-06-05 05:03:16,360 INFO L628 ElimStorePlain]: treesize reduction 970, result has 32.4 percent of original size [2021-06-05 05:03:16,368 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:03:16,369 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:16,566 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2021-06-05 05:03:16,566 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:03:16,574 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:03:16,575 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:16,768 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2021-06-05 05:03:16,768 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:03:16,768 INFO L518 ElimStorePlain]: Eliminatee char_at_1 vanished before elimination [2021-06-05 05:03:16,775 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:03:16,776 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:16,965 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2021-06-05 05:03:16,965 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:03:16,966 INFO L518 ElimStorePlain]: Eliminatee v_prenex_292 vanished before elimination [2021-06-05 05:03:16,966 INFO L518 ElimStorePlain]: Eliminatee v_prenex_294 vanished before elimination [2021-06-05 05:03:16,966 INFO L518 ElimStorePlain]: Eliminatee v_prenex_296 vanished before elimination [2021-06-05 05:03:16,973 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:03:16,974 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:17,159 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2021-06-05 05:03:17,159 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:03:17,167 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:17,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:03:17,168 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:17,349 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2021-06-05 05:03:17,349 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:03:17,356 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:03:17,357 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:17,536 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2021-06-05 05:03:17,536 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:03:17,544 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:03:17,545 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:17,720 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2021-06-05 05:03:17,721 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:03:17,728 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:03:17,729 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:17,904 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2021-06-05 05:03:17,905 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:03:17,905 INFO L518 ElimStorePlain]: Eliminatee v_prenex_300 vanished before elimination [2021-06-05 05:03:17,912 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:03:17,913 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:18,086 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2021-06-05 05:03:18,086 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:03:18,094 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:03:18,095 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:18,267 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2021-06-05 05:03:18,267 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:03:18,274 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:03:18,275 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:18,460 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2021-06-05 05:03:18,461 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:03:18,461 INFO L518 ElimStorePlain]: Eliminatee v_prenex_304 vanished before elimination [2021-06-05 05:03:18,469 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:03:18,471 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:18,641 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2021-06-05 05:03:18,641 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:03:18,647 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:03:18,648 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:18,810 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2021-06-05 05:03:18,810 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:03:18,816 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:03:18,817 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:18,977 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2021-06-05 05:03:18,978 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:03:18,978 INFO L518 ElimStorePlain]: Eliminatee v_prenex_317 vanished before elimination [2021-06-05 05:03:18,978 INFO L518 ElimStorePlain]: Eliminatee v_prenex_307 vanished before elimination [2021-06-05 05:03:18,984 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:03:18,985 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:19,141 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2021-06-05 05:03:19,141 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:03:19,146 INFO L550 ElimStorePlain]: Start of recursive call 1: 24 dim-0 vars, 24 dim-1 vars, End of recursive call: and 9 xjuncts. [2021-06-05 05:03:19,146 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 48 variables, input treesize:1439, output treesize:131 [2021-06-05 05:03:19,316 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:03:19,316 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674129824] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:03:19,316 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:03:19,316 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 19 [2021-06-05 05:03:19,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428516011] [2021-06-05 05:03:19,316 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 05:03:19,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:03:19,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 05:03:19,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2021-06-05 05:03:19,317 INFO L87 Difference]: Start difference. First operand 585 states and 1897 transitions. Second operand has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 19 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:03:20,240 WARN L205 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 287 DAG size of output: 207 [2021-06-05 05:03:20,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:03:20,822 INFO L93 Difference]: Finished difference Result 1164 states and 3573 transitions. [2021-06-05 05:03:20,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-05 05:03:20,822 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 19 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-06-05 05:03:20,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:03:20,824 INFO L225 Difference]: With dead ends: 1164 [2021-06-05 05:03:20,824 INFO L226 Difference]: Without dead ends: 1052 [2021-06-05 05:03:20,824 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 14 SyntacticMatches, 4 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 2348.8ms TimeCoverageRelationStatistics Valid=141, Invalid=789, Unknown=0, NotChecked=0, Total=930 [2021-06-05 05:03:20,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2021-06-05 05:03:20,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 646. [2021-06-05 05:03:20,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 646 states, 645 states have (on average 3.2573643410852715) internal successors, (2101), 645 states have internal predecessors, (2101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:03:20,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 2101 transitions. [2021-06-05 05:03:20,831 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 2101 transitions. Word has length 23 [2021-06-05 05:03:20,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:03:20,831 INFO L482 AbstractCegarLoop]: Abstraction has 646 states and 2101 transitions. [2021-06-05 05:03:20,832 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 19 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:03:20,832 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 2101 transitions. [2021-06-05 05:03:20,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-06-05 05:03:20,832 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:03:20,832 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:03:21,033 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8070,133 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:03:21,033 INFO L430 AbstractCegarLoop]: === Iteration 203 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:03:21,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:03:21,033 INFO L82 PathProgramCache]: Analyzing trace with hash 1598560301, now seen corresponding path program 106 times [2021-06-05 05:03:21,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:03:21,033 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710330723] [2021-06-05 05:03:21,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:03:21,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:03:21,220 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:03:21,220 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:03:21,220 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710330723] [2021-06-05 05:03:21,220 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710330723] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:03:21,220 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878094456] [2021-06-05 05:03:21,220 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 134 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 134 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:03:21,254 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 05:03:21,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:03:21,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 22 conjunts are in the unsatisfiable core [2021-06-05 05:03:21,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:03:21,392 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:21,393 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:21,396 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:03:21,396 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:21,399 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:03:21,400 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:21,403 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:03:21,404 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:21,406 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:21,407 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:21,410 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:03:21,411 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:21,414 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:21,414 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:21,417 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:21,418 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:21,420 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:21,421 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:21,424 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:03:21,425 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:21,427 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:21,428 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:21,430 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:21,431 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:21,433 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:03:21,434 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:21,437 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:21,437 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:21,440 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:21,441 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:21,443 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:21,444 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:21,446 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:21,447 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:21,449 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:21,450 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:21,452 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:21,453 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:21,455 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:21,456 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:21,458 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:21,459 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:21,461 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:21,461 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:21,536 INFO L628 ElimStorePlain]: treesize reduction 31, result has 75.8 percent of original size [2021-06-05 05:03:21,539 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 3 dim-0 vars, and 4 xjuncts. [2021-06-05 05:03:21,539 INFO L247 ElimStorePlain]: Needed 23 recursive calls to eliminate 2 variables, input treesize:731, output treesize:89 [2021-06-05 05:03:21,779 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 46 [2021-06-05 05:03:22,003 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2021-06-05 05:03:22,317 WARN L205 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 46 [2021-06-05 05:03:22,475 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2021-06-05 05:03:23,515 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:23,516 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:23,516 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 7 [2021-06-05 05:03:23,516 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:23,521 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:23,521 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:23,521 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:03:23,522 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:23,526 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:23,527 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:23,527 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:03:23,528 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:23,532 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:23,533 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:23,533 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:03:23,533 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:23,537 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:23,538 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:23,542 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:23,542 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:23,543 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:03:23,543 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:23,547 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:23,548 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:03:23,548 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:23,733 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 51 [2021-06-05 05:03:23,734 INFO L628 ElimStorePlain]: treesize reduction 478, result has 24.5 percent of original size [2021-06-05 05:03:23,737 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:03:23,738 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:23,741 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:03:23,742 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:23,806 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:03:23,809 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:03:23,810 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:23,870 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:03:23,872 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 05:03:23,872 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 6 variables, input treesize:825, output treesize:70 [2021-06-05 05:03:24,024 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:03:24,024 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878094456] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:03:24,024 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:03:24,024 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 16 [2021-06-05 05:03:24,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256362097] [2021-06-05 05:03:24,025 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 05:03:24,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:03:24,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 05:03:24,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2021-06-05 05:03:24,025 INFO L87 Difference]: Start difference. First operand 646 states and 2101 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:03:24,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:03:24,977 INFO L93 Difference]: Finished difference Result 1058 states and 3313 transitions. [2021-06-05 05:03:24,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-05 05:03:24,977 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-06-05 05:03:24,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:03:24,979 INFO L225 Difference]: With dead ends: 1058 [2021-06-05 05:03:24,979 INFO L226 Difference]: Without dead ends: 1011 [2021-06-05 05:03:24,979 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 17 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 1055.2ms TimeCoverageRelationStatistics Valid=108, Invalid=594, Unknown=0, NotChecked=0, Total=702 [2021-06-05 05:03:24,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2021-06-05 05:03:24,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 631. [2021-06-05 05:03:24,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 631 states, 630 states have (on average 3.257142857142857) internal successors, (2052), 630 states have internal predecessors, (2052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:03:24,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 2052 transitions. [2021-06-05 05:03:24,986 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 2052 transitions. Word has length 23 [2021-06-05 05:03:24,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:03:24,986 INFO L482 AbstractCegarLoop]: Abstraction has 631 states and 2052 transitions. [2021-06-05 05:03:24,986 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:03:24,986 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 2052 transitions. [2021-06-05 05:03:24,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-06-05 05:03:24,987 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:03:24,987 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:03:25,187 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 134 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9088 [2021-06-05 05:03:25,188 INFO L430 AbstractCegarLoop]: === Iteration 204 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:03:25,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:03:25,188 INFO L82 PathProgramCache]: Analyzing trace with hash 158854717, now seen corresponding path program 107 times [2021-06-05 05:03:25,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:03:25,188 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317796575] [2021-06-05 05:03:25,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:03:25,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:03:25,293 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:03:25,293 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:03:25,293 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317796575] [2021-06-05 05:03:25,293 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317796575] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:03:25,294 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805207807] [2021-06-05 05:03:25,294 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 135 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 135 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:03:25,328 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-05 05:03:25,328 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:03:25,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-05 05:03:25,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:03:25,537 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:03:25,538 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1805207807] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:03:25,538 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:03:25,538 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-06-05 05:03:25,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599849110] [2021-06-05 05:03:25,538 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 05:03:25,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:03:25,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 05:03:25,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-06-05 05:03:25,538 INFO L87 Difference]: Start difference. First operand 631 states and 2052 transitions. Second operand has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 18 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:03:26,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:03:26,869 INFO L93 Difference]: Finished difference Result 1110 states and 3430 transitions. [2021-06-05 05:03:26,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 05:03:26,869 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 18 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-06-05 05:03:26,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:03:26,870 INFO L225 Difference]: With dead ends: 1110 [2021-06-05 05:03:26,870 INFO L226 Difference]: Without dead ends: 956 [2021-06-05 05:03:26,871 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 398 ImplicationChecksByTransitivity, 989.2ms TimeCoverageRelationStatistics Valid=196, Invalid=1696, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 05:03:26,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 956 states. [2021-06-05 05:03:26,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 956 to 650. [2021-06-05 05:03:26,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 650 states, 649 states have (on average 3.2604006163328196) internal successors, (2116), 649 states have internal predecessors, (2116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:03:26,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 2116 transitions. [2021-06-05 05:03:26,878 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 2116 transitions. Word has length 23 [2021-06-05 05:03:26,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:03:26,878 INFO L482 AbstractCegarLoop]: Abstraction has 650 states and 2116 transitions. [2021-06-05 05:03:26,878 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 18 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:03:26,878 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 2116 transitions. [2021-06-05 05:03:26,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-06-05 05:03:26,879 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:03:26,879 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:03:27,079 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9253,135 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:03:27,079 INFO L430 AbstractCegarLoop]: === Iteration 205 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:03:27,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:03:27,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1145584657, now seen corresponding path program 108 times [2021-06-05 05:03:27,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:03:27,079 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660178785] [2021-06-05 05:03:27,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:03:27,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:03:27,189 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-06-05 05:03:27,189 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:03:27,189 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660178785] [2021-06-05 05:03:27,189 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660178785] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:03:27,189 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140639991] [2021-06-05 05:03:27,189 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 136 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 136 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:03:27,227 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 05:03:27,227 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:03:27,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-05 05:03:27,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:03:27,412 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-06-05 05:03:27,412 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2140639991] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:03:27,412 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:03:27,412 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-06-05 05:03:27,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164960920] [2021-06-05 05:03:27,412 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 05:03:27,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:03:27,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 05:03:27,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-06-05 05:03:27,413 INFO L87 Difference]: Start difference. First operand 650 states and 2116 transitions. Second operand has 18 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 18 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:03:28,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:03:28,874 INFO L93 Difference]: Finished difference Result 1280 states and 4055 transitions. [2021-06-05 05:03:28,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-05 05:03:28,874 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 18 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-06-05 05:03:28,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:03:28,876 INFO L225 Difference]: With dead ends: 1280 [2021-06-05 05:03:28,876 INFO L226 Difference]: Without dead ends: 1139 [2021-06-05 05:03:28,876 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 485 ImplicationChecksByTransitivity, 1033.4ms TimeCoverageRelationStatistics Valid=232, Invalid=1930, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 05:03:28,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2021-06-05 05:03:28,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 718. [2021-06-05 05:03:28,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 718 states, 717 states have (on average 3.280334728033473) internal successors, (2352), 717 states have internal predecessors, (2352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:03:28,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 718 states to 718 states and 2352 transitions. [2021-06-05 05:03:28,884 INFO L78 Accepts]: Start accepts. Automaton has 718 states and 2352 transitions. Word has length 23 [2021-06-05 05:03:28,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:03:28,884 INFO L482 AbstractCegarLoop]: Abstraction has 718 states and 2352 transitions. [2021-06-05 05:03:28,884 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 18 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:03:28,884 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 2352 transitions. [2021-06-05 05:03:28,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-06-05 05:03:28,885 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:03:28,885 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:03:29,085 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 136 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9262 [2021-06-05 05:03:29,086 INFO L430 AbstractCegarLoop]: === Iteration 206 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:03:29,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:03:29,086 INFO L82 PathProgramCache]: Analyzing trace with hash -2120967821, now seen corresponding path program 109 times [2021-06-05 05:03:29,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:03:29,086 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939021561] [2021-06-05 05:03:29,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:03:29,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:03:29,192 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:03:29,192 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:03:29,192 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939021561] [2021-06-05 05:03:29,192 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939021561] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:03:29,192 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802016766] [2021-06-05 05:03:29,192 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 137 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 137 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:03:29,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:03:29,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-05 05:03:29,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:03:29,360 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:03:29,361 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:29,544 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2021-06-05 05:03:29,545 INFO L628 ElimStorePlain]: treesize reduction 40, result has 87.1 percent of original size [2021-06-05 05:03:29,545 INFO L518 ElimStorePlain]: Eliminatee v_prenex_322 vanished before elimination [2021-06-05 05:03:29,548 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:03:29,549 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:29,703 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 39 [2021-06-05 05:03:29,703 INFO L628 ElimStorePlain]: treesize reduction 35, result has 86.4 percent of original size [2021-06-05 05:03:29,706 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:03:29,707 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:29,710 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:03:29,710 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:29,713 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:29,713 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:29,716 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:29,716 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:29,776 INFO L628 ElimStorePlain]: treesize reduction 88, result has 43.6 percent of original size [2021-06-05 05:03:29,776 INFO L518 ElimStorePlain]: Eliminatee v_prenex_325 vanished before elimination [2021-06-05 05:03:29,778 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 5 dim-1 vars, End of recursive call: 2 dim-0 vars, and 3 xjuncts. [2021-06-05 05:03:29,778 INFO L247 ElimStorePlain]: Needed 7 recursive calls to eliminate 6 variables, input treesize:314, output treesize:60 [2021-06-05 05:03:31,425 INFO L446 ElimStorePlain]: Different costs {0=[char_at_1], 3=[char_at_5]} [2021-06-05 05:03:31,429 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:31,430 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:31,434 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:31,435 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:31,439 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:31,440 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:31,444 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:31,445 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:31,449 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:31,450 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:31,454 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:31,454 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:31,459 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:03:31,460 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:31,464 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:31,465 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:31,470 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:31,470 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:31,475 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:03:31,476 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:31,480 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:31,481 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:31,486 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:31,486 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:31,490 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:31,491 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:31,496 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:03:31,497 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:31,502 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:03:31,503 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:31,507 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:03:31,508 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:31,513 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:31,514 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:31,518 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:31,519 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:31,524 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:31,524 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:31,529 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:03:31,530 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:31,534 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:31,535 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:31,539 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:03:31,540 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:31,545 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:31,546 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:31,550 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:03:31,551 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:31,556 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:03:31,557 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:31,561 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:31,562 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:31,566 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:31,567 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:31,571 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:31,572 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:31,576 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:31,577 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:31,581 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:03:31,582 INFO L550 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:31,586 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:31,587 INFO L550 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:31,591 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:31,591 INFO L550 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:31,595 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:31,596 INFO L550 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:31,599 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:31,600 INFO L550 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:31,604 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:31,604 INFO L550 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:31,608 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:31,609 INFO L550 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:31,613 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:31,614 INFO L550 ElimStorePlain]: Start of recursive call 38: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:31,617 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:31,618 INFO L550 ElimStorePlain]: Start of recursive call 39: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:31,621 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:31,622 INFO L550 ElimStorePlain]: Start of recursive call 40: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:31,626 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:31,627 INFO L550 ElimStorePlain]: Start of recursive call 41: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:31,631 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:31,631 INFO L550 ElimStorePlain]: Start of recursive call 42: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:31,635 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:31,635 INFO L550 ElimStorePlain]: Start of recursive call 43: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:31,639 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:31,640 INFO L550 ElimStorePlain]: Start of recursive call 44: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:31,643 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:31,644 INFO L550 ElimStorePlain]: Start of recursive call 45: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:31,647 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:31,648 INFO L550 ElimStorePlain]: Start of recursive call 46: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:31,651 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:31,652 INFO L550 ElimStorePlain]: Start of recursive call 47: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:31,655 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:31,656 INFO L550 ElimStorePlain]: Start of recursive call 48: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:31,659 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:31,660 INFO L550 ElimStorePlain]: Start of recursive call 49: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:31,664 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:03:31,665 INFO L550 ElimStorePlain]: Start of recursive call 50: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:31,668 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:31,668 INFO L550 ElimStorePlain]: Start of recursive call 51: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:31,672 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:31,673 INFO L550 ElimStorePlain]: Start of recursive call 52: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:31,676 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:31,677 INFO L550 ElimStorePlain]: Start of recursive call 53: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:31,680 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:31,681 INFO L550 ElimStorePlain]: Start of recursive call 54: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:31,685 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:31,685 INFO L550 ElimStorePlain]: Start of recursive call 55: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:31,688 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:31,689 INFO L550 ElimStorePlain]: Start of recursive call 56: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:31,692 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:31,693 INFO L550 ElimStorePlain]: Start of recursive call 57: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:31,696 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:31,697 INFO L550 ElimStorePlain]: Start of recursive call 58: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:31,700 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:31,700 INFO L550 ElimStorePlain]: Start of recursive call 59: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:31,889 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 45 [2021-06-05 05:03:31,890 INFO L628 ElimStorePlain]: treesize reduction 56, result has 80.8 percent of original size [2021-06-05 05:03:31,894 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:03:31,894 INFO L550 ElimStorePlain]: Start of recursive call 60: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:31,897 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:31,898 INFO L550 ElimStorePlain]: Start of recursive call 61: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:31,901 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:03:31,902 INFO L550 ElimStorePlain]: Start of recursive call 62: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:31,905 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:03:31,906 INFO L550 ElimStorePlain]: Start of recursive call 63: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:31,909 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:03:31,910 INFO L550 ElimStorePlain]: Start of recursive call 64: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:31,912 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:03:31,913 INFO L550 ElimStorePlain]: Start of recursive call 65: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:31,916 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:03:31,917 INFO L550 ElimStorePlain]: Start of recursive call 66: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:32,049 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 36 [2021-06-05 05:03:32,049 INFO L628 ElimStorePlain]: treesize reduction 25, result has 85.5 percent of original size [2021-06-05 05:03:32,051 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-06-05 05:03:32,051 INFO L247 ElimStorePlain]: Needed 66 recursive calls to eliminate 5 variables, input treesize:2504, output treesize:47 [2021-06-05 05:03:32,155 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:03:32,155 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [802016766] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:03:32,155 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:03:32,155 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-06-05 05:03:32,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182196534] [2021-06-05 05:03:32,156 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 05:03:32,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:03:32,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 05:03:32,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-06-05 05:03:32,156 INFO L87 Difference]: Start difference. First operand 718 states and 2352 transitions. Second operand has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:03:32,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:03:32,584 INFO L93 Difference]: Finished difference Result 1032 states and 3327 transitions. [2021-06-05 05:03:32,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-05 05:03:32,584 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-06-05 05:03:32,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:03:32,585 INFO L225 Difference]: With dead ends: 1032 [2021-06-05 05:03:32,586 INFO L226 Difference]: Without dead ends: 978 [2021-06-05 05:03:32,586 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 17 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 509.3ms TimeCoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2021-06-05 05:03:32,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 978 states. [2021-06-05 05:03:32,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 978 to 745. [2021-06-05 05:03:32,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 745 states, 744 states have (on average 3.2876344086021505) internal successors, (2446), 744 states have internal predecessors, (2446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:03:32,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 745 states to 745 states and 2446 transitions. [2021-06-05 05:03:32,593 INFO L78 Accepts]: Start accepts. Automaton has 745 states and 2446 transitions. Word has length 23 [2021-06-05 05:03:32,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:03:32,593 INFO L482 AbstractCegarLoop]: Abstraction has 745 states and 2446 transitions. [2021-06-05 05:03:32,593 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:03:32,594 INFO L276 IsEmpty]: Start isEmpty. Operand 745 states and 2446 transitions. [2021-06-05 05:03:32,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-06-05 05:03:32,594 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:03:32,594 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:03:32,795 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9273,137 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:03:32,795 INFO L430 AbstractCegarLoop]: === Iteration 207 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:03:32,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:03:32,795 INFO L82 PathProgramCache]: Analyzing trace with hash -1045982109, now seen corresponding path program 110 times [2021-06-05 05:03:32,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:03:32,795 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523256976] [2021-06-05 05:03:32,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:03:32,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:03:32,924 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:03:32,924 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:03:32,924 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523256976] [2021-06-05 05:03:32,924 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523256976] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:03:32,924 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629614972] [2021-06-05 05:03:32,924 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 138 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 138 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:03:32,964 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 05:03:32,965 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:03:32,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-05 05:03:32,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:03:33,147 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:03:33,147 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [629614972] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:03:33,147 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:03:33,147 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-06-05 05:03:33,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307565221] [2021-06-05 05:03:33,147 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 05:03:33,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:03:33,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 05:03:33,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-06-05 05:03:33,148 INFO L87 Difference]: Start difference. First operand 745 states and 2446 transitions. Second operand has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 18 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:03:35,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:03:35,786 INFO L93 Difference]: Finished difference Result 1751 states and 5408 transitions. [2021-06-05 05:03:35,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-06-05 05:03:35,787 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 18 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-06-05 05:03:35,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:03:35,789 INFO L225 Difference]: With dead ends: 1751 [2021-06-05 05:03:35,789 INFO L226 Difference]: Without dead ends: 1551 [2021-06-05 05:03:35,789 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1137 ImplicationChecksByTransitivity, 2014.5ms TimeCoverageRelationStatistics Valid=446, Invalid=3586, Unknown=0, NotChecked=0, Total=4032 [2021-06-05 05:03:35,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1551 states. [2021-06-05 05:03:35,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1551 to 812. [2021-06-05 05:03:35,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 812 states, 811 states have (on average 3.335388409371147) internal successors, (2705), 811 states have internal predecessors, (2705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:03:35,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 2705 transitions. [2021-06-05 05:03:35,800 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 2705 transitions. Word has length 23 [2021-06-05 05:03:35,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:03:35,800 INFO L482 AbstractCegarLoop]: Abstraction has 812 states and 2705 transitions. [2021-06-05 05:03:35,800 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 18 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:03:35,800 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 2705 transitions. [2021-06-05 05:03:35,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-06-05 05:03:35,801 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:03:35,801 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:03:36,001 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 138 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9678 [2021-06-05 05:03:36,002 INFO L430 AbstractCegarLoop]: === Iteration 208 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:03:36,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:03:36,002 INFO L82 PathProgramCache]: Analyzing trace with hash 331430193, now seen corresponding path program 111 times [2021-06-05 05:03:36,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:03:36,002 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580929898] [2021-06-05 05:03:36,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:03:36,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:03:36,251 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:03:36,251 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:03:36,251 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580929898] [2021-06-05 05:03:36,251 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580929898] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:03:36,251 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933780401] [2021-06-05 05:03:36,251 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 139 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 139 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:03:36,286 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 05:03:36,287 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:03:36,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-05 05:03:36,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:03:36,395 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:36,395 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:36,398 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:36,399 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:36,401 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:03:36,402 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:36,405 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:03:36,406 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:36,409 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:36,409 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:36,412 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:36,413 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:36,415 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:36,416 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:36,418 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:03:36,419 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:36,422 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:36,422 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:36,425 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:36,426 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:36,428 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:03:36,429 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:36,432 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:36,433 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:36,435 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:03:36,436 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:36,438 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:36,439 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:36,442 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:36,442 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:36,445 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:36,446 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:36,448 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:36,449 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:36,451 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:36,452 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:36,454 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:36,455 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:36,457 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:36,457 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:36,459 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:36,460 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:36,548 INFO L628 ElimStorePlain]: treesize reduction 34, result has 76.2 percent of original size [2021-06-05 05:03:36,550 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 3 dim-0 vars, and 4 xjuncts. [2021-06-05 05:03:36,551 INFO L247 ElimStorePlain]: Needed 22 recursive calls to eliminate 2 variables, input treesize:767, output treesize:101 [2021-06-05 05:03:37,203 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_329, char_at_9, v_prenex_330, v_prenex_332], 6=[char_at_5]} [2021-06-05 05:03:37,209 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:37,209 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:37,215 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:03:37,216 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:37,221 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:03:37,222 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:37,227 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:37,228 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:37,761 WARN L205 SmtUtils]: Spent 533.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 73 [2021-06-05 05:03:37,762 INFO L628 ElimStorePlain]: treesize reduction 1098, result has 33.3 percent of original size [2021-06-05 05:03:37,762 INFO L518 ElimStorePlain]: Eliminatee char_at_9 vanished before elimination [2021-06-05 05:03:37,766 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:03:37,767 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:37,770 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:03:37,771 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:38,129 WARN L205 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2021-06-05 05:03:38,130 INFO L628 ElimStorePlain]: treesize reduction 70, result has 86.7 percent of original size [2021-06-05 05:03:38,134 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:03:38,134 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:38,138 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:03:38,139 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:38,142 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:38,143 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:38,147 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:03:38,147 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:38,151 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:03:38,152 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:38,156 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:38,156 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:38,160 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:38,160 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:38,164 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:38,164 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:38,317 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 50 [2021-06-05 05:03:38,318 INFO L628 ElimStorePlain]: treesize reduction 124, result has 59.1 percent of original size [2021-06-05 05:03:38,321 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:03:38,322 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:38,325 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:03:38,326 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:38,329 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:38,329 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:38,332 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:03:38,333 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:38,336 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:03:38,337 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:38,418 INFO L628 ElimStorePlain]: treesize reduction 24, result has 81.0 percent of original size [2021-06-05 05:03:38,420 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 5 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-06-05 05:03:38,420 INFO L247 ElimStorePlain]: Needed 20 recursive calls to eliminate 9 variables, input treesize:1761, output treesize:37 [2021-06-05 05:03:38,539 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-06-05 05:03:38,539 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1933780401] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:03:38,539 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:03:38,539 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10] total 20 [2021-06-05 05:03:38,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747946562] [2021-06-05 05:03:38,540 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 05:03:38,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:03:38,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 05:03:38,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2021-06-05 05:03:38,540 INFO L87 Difference]: Start difference. First operand 812 states and 2705 transitions. Second operand has 20 states, 20 states have (on average 1.95) internal successors, (39), 20 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:03:39,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:03:39,861 INFO L93 Difference]: Finished difference Result 1230 states and 3891 transitions. [2021-06-05 05:03:39,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-05 05:03:39,861 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.95) internal successors, (39), 20 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-06-05 05:03:39,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:03:39,862 INFO L225 Difference]: With dead ends: 1230 [2021-06-05 05:03:39,863 INFO L226 Difference]: Without dead ends: 1140 [2021-06-05 05:03:39,863 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 1255.3ms TimeCoverageRelationStatistics Valid=145, Invalid=977, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 05:03:39,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1140 states. [2021-06-05 05:03:39,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1140 to 834. [2021-06-05 05:03:39,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 834 states, 833 states have (on average 3.355342136854742) internal successors, (2795), 833 states have internal predecessors, (2795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:03:39,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 2795 transitions. [2021-06-05 05:03:39,872 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 2795 transitions. Word has length 23 [2021-06-05 05:03:39,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:03:39,872 INFO L482 AbstractCegarLoop]: Abstraction has 834 states and 2795 transitions. [2021-06-05 05:03:39,872 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 1.95) internal successors, (39), 20 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:03:39,872 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 2795 transitions. [2021-06-05 05:03:39,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-06-05 05:03:39,873 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:03:39,873 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:03:40,073 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9692,139 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:03:40,074 INFO L430 AbstractCegarLoop]: === Iteration 209 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:03:40,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:03:40,074 INFO L82 PathProgramCache]: Analyzing trace with hash 380787379, now seen corresponding path program 112 times [2021-06-05 05:03:40,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:03:40,074 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911282548] [2021-06-05 05:03:40,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:03:40,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:03:40,203 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-06-05 05:03:40,203 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:03:40,203 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911282548] [2021-06-05 05:03:40,203 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911282548] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:03:40,204 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978207049] [2021-06-05 05:03:40,204 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 140 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 140 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:03:40,238 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 05:03:40,238 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:03:40,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-05 05:03:40,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:03:40,435 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:03:40,436 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1978207049] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:03:40,436 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:03:40,436 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-06-05 05:03:40,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066060117] [2021-06-05 05:03:40,436 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 05:03:40,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:03:40,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 05:03:40,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-06-05 05:03:40,437 INFO L87 Difference]: Start difference. First operand 834 states and 2795 transitions. Second operand has 18 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 18 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:03:42,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:03:42,151 INFO L93 Difference]: Finished difference Result 1493 states and 4754 transitions. [2021-06-05 05:03:42,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-05 05:03:42,152 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 18 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-06-05 05:03:42,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:03:42,153 INFO L225 Difference]: With dead ends: 1493 [2021-06-05 05:03:42,153 INFO L226 Difference]: Without dead ends: 1334 [2021-06-05 05:03:42,154 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 616 ImplicationChecksByTransitivity, 1405.7ms TimeCoverageRelationStatistics Valid=265, Invalid=2285, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 05:03:42,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1334 states. [2021-06-05 05:03:42,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1334 to 830. [2021-06-05 05:03:42,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 830 states, 829 states have (on average 3.3462002412545235) internal successors, (2774), 829 states have internal predecessors, (2774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:03:42,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 2774 transitions. [2021-06-05 05:03:42,163 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 2774 transitions. Word has length 23 [2021-06-05 05:03:42,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:03:42,163 INFO L482 AbstractCegarLoop]: Abstraction has 830 states and 2774 transitions. [2021-06-05 05:03:42,163 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 18 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:03:42,163 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 2774 transitions. [2021-06-05 05:03:42,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-06-05 05:03:42,164 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:03:42,164 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:03:42,365 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9767,140 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:03:42,365 INFO L430 AbstractCegarLoop]: === Iteration 210 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:03:42,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:03:42,365 INFO L82 PathProgramCache]: Analyzing trace with hash 857490451, now seen corresponding path program 113 times [2021-06-05 05:03:42,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:03:42,365 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609179855] [2021-06-05 05:03:42,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:03:42,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:03:42,544 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:03:42,544 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:03:42,544 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609179855] [2021-06-05 05:03:42,544 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609179855] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:03:42,544 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294310640] [2021-06-05 05:03:42,545 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 141 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 141 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:03:42,578 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 05:03:42,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:03:42,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-05 05:03:42,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:03:42,791 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-06-05 05:03:42,792 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1294310640] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:03:42,792 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:03:42,792 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-06-05 05:03:42,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247277046] [2021-06-05 05:03:42,792 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 05:03:42,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:03:42,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 05:03:42,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2021-06-05 05:03:42,792 INFO L87 Difference]: Start difference. First operand 830 states and 2774 transitions. Second operand has 19 states, 19 states have (on average 2.210526315789474) internal successors, (42), 19 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:03:43,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:03:43,201 INFO L93 Difference]: Finished difference Result 1089 states and 3521 transitions. [2021-06-05 05:03:43,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-05 05:03:43,201 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.210526315789474) internal successors, (42), 19 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-06-05 05:03:43,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:03:43,203 INFO L225 Difference]: With dead ends: 1089 [2021-06-05 05:03:43,203 INFO L226 Difference]: Without dead ends: 1035 [2021-06-05 05:03:43,203 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 471.9ms TimeCoverageRelationStatistics Valid=75, Invalid=431, Unknown=0, NotChecked=0, Total=506 [2021-06-05 05:03:43,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1035 states. [2021-06-05 05:03:43,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1035 to 836. [2021-06-05 05:03:43,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 836 states, 835 states have (on average 3.3532934131736525) internal successors, (2800), 835 states have internal predecessors, (2800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:03:43,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 2800 transitions. [2021-06-05 05:03:43,211 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 2800 transitions. Word has length 23 [2021-06-05 05:03:43,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:03:43,212 INFO L482 AbstractCegarLoop]: Abstraction has 836 states and 2800 transitions. [2021-06-05 05:03:43,212 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.210526315789474) internal successors, (42), 19 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:03:43,212 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 2800 transitions. [2021-06-05 05:03:43,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-06-05 05:03:43,213 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:03:43,213 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:03:43,413 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9778,141 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:03:43,413 INFO L430 AbstractCegarLoop]: === Iteration 211 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:03:43,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:03:43,413 INFO L82 PathProgramCache]: Analyzing trace with hash -2066982035, now seen corresponding path program 114 times [2021-06-05 05:03:43,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:03:43,413 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495927534] [2021-06-05 05:03:43,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:03:43,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:03:43,686 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:03:43,686 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:03:43,686 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495927534] [2021-06-05 05:03:43,686 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495927534] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:03:43,686 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [519244838] [2021-06-05 05:03:43,686 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 142 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 142 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:03:43,722 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 05:03:43,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:03:43,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 21 conjunts are in the unsatisfiable core [2021-06-05 05:03:43,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:03:43,998 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-06-05 05:03:43,999 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:44,012 INFO L628 ElimStorePlain]: treesize reduction 9, result has 65.4 percent of original size [2021-06-05 05:03:44,012 INFO L518 ElimStorePlain]: Eliminatee index_of_4 vanished before elimination [2021-06-05 05:03:44,013 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-05 05:03:44,013 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:39, output treesize:17 [2021-06-05 05:03:44,048 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-06-05 05:03:44,048 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [519244838] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:03:44,048 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:03:44,048 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10] total 22 [2021-06-05 05:03:44,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596404986] [2021-06-05 05:03:44,049 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-05 05:03:44,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:03:44,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-05 05:03:44,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=407, Unknown=0, NotChecked=0, Total=462 [2021-06-05 05:03:44,049 INFO L87 Difference]: Start difference. First operand 836 states and 2800 transitions. Second operand has 22 states, 22 states have (on average 1.9090909090909092) internal successors, (42), 22 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:03:45,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:03:45,074 INFO L93 Difference]: Finished difference Result 1463 states and 4501 transitions. [2021-06-05 05:03:45,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-05 05:03:45,074 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.9090909090909092) internal successors, (42), 22 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-06-05 05:03:45,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:03:45,076 INFO L225 Difference]: With dead ends: 1463 [2021-06-05 05:03:45,076 INFO L226 Difference]: Without dead ends: 1180 [2021-06-05 05:03:45,076 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 983.6ms TimeCoverageRelationStatistics Valid=162, Invalid=1170, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 05:03:45,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1180 states. [2021-06-05 05:03:45,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1180 to 839. [2021-06-05 05:03:45,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 839 states, 838 states have (on average 3.3532219570405726) internal successors, (2810), 838 states have internal predecessors, (2810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:03:45,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 839 states to 839 states and 2810 transitions. [2021-06-05 05:03:45,085 INFO L78 Accepts]: Start accepts. Automaton has 839 states and 2810 transitions. Word has length 23 [2021-06-05 05:03:45,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:03:45,085 INFO L482 AbstractCegarLoop]: Abstraction has 839 states and 2810 transitions. [2021-06-05 05:03:45,085 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 1.9090909090909092) internal successors, (42), 22 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:03:45,085 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states and 2810 transitions. [2021-06-05 05:03:45,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-06-05 05:03:45,086 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:03:45,086 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:03:45,286 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9791,142 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:03:45,287 INFO L430 AbstractCegarLoop]: === Iteration 212 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:03:45,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:03:45,287 INFO L82 PathProgramCache]: Analyzing trace with hash 1098639245, now seen corresponding path program 115 times [2021-06-05 05:03:45,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:03:45,287 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788577810] [2021-06-05 05:03:45,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:03:45,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:03:45,436 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-06-05 05:03:45,436 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:03:45,436 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788577810] [2021-06-05 05:03:45,436 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788577810] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:03:45,436 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930879454] [2021-06-05 05:03:45,436 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 143 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 143 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:03:45,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:03:45,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-05 05:03:45,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:03:45,579 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:45,580 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:45,584 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:03:45,585 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:45,588 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:03:45,589 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:45,592 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:03:45,593 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:45,596 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:03:45,597 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:45,601 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:45,601 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:45,605 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:03:45,606 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:45,608 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:45,609 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:45,612 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:45,612 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:45,615 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:03:45,616 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:45,620 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:45,620 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:45,623 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:45,624 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:45,627 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:03:45,628 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:45,631 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:45,632 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:45,635 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:45,636 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:45,639 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:45,639 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:45,642 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:45,642 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:45,645 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:45,646 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:45,648 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:45,649 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:45,651 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:45,652 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:45,654 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:45,655 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:45,657 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:45,658 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:45,661 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:45,661 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:45,664 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:45,664 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:45,666 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:45,667 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:45,811 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 29 [2021-06-05 05:03:45,811 INFO L628 ElimStorePlain]: treesize reduction 94, result has 53.7 percent of original size [2021-06-05 05:03:45,813 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 3 dim-0 vars, and 4 xjuncts. [2021-06-05 05:03:45,814 INFO L247 ElimStorePlain]: Needed 26 recursive calls to eliminate 2 variables, input treesize:924, output treesize:101 [2021-06-05 05:03:46,566 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_338, char_at_5, v_prenex_335, v_prenex_336, v_prenex_337], 1=[char_at_1]} [2021-06-05 05:03:46,571 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:03:46,572 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:46,575 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:03:46,576 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:46,772 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 49 [2021-06-05 05:03:46,773 INFO L628 ElimStorePlain]: treesize reduction 490, result has 32.8 percent of original size [2021-06-05 05:03:46,775 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:03:46,776 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:46,779 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:03:46,780 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:46,921 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2021-06-05 05:03:46,921 INFO L628 ElimStorePlain]: treesize reduction 12, result has 94.4 percent of original size [2021-06-05 05:03:46,924 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:03:46,925 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:46,927 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:03:46,928 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:46,930 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:46,931 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:46,933 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:46,934 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:47,005 INFO L628 ElimStorePlain]: treesize reduction 46, result has 67.8 percent of original size [2021-06-05 05:03:47,005 INFO L518 ElimStorePlain]: Eliminatee v_prenex_336 vanished before elimination [2021-06-05 05:03:47,006 INFO L518 ElimStorePlain]: Eliminatee v_prenex_337 vanished before elimination [2021-06-05 05:03:47,008 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:03:47,009 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:47,011 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:03:47,012 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:47,014 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:47,014 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:47,048 INFO L628 ElimStorePlain]: treesize reduction 18, result has 70.0 percent of original size [2021-06-05 05:03:47,049 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 6 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-05 05:03:47,049 INFO L247 ElimStorePlain]: Needed 12 recursive calls to eliminate 8 variables, input treesize:753, output treesize:20 [2021-06-05 05:03:47,099 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-06-05 05:03:47,099 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1930879454] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:03:47,100 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:03:47,100 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-06-05 05:03:47,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838454036] [2021-06-05 05:03:47,100 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 05:03:47,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:03:47,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 05:03:47,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-06-05 05:03:47,100 INFO L87 Difference]: Start difference. First operand 839 states and 2810 transitions. Second operand has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:03:47,550 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 44 [2021-06-05 05:03:47,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:03:47,648 INFO L93 Difference]: Finished difference Result 1082 states and 3523 transitions. [2021-06-05 05:03:47,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 05:03:47,648 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-06-05 05:03:47,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:03:47,650 INFO L225 Difference]: With dead ends: 1082 [2021-06-05 05:03:47,650 INFO L226 Difference]: Without dead ends: 1043 [2021-06-05 05:03:47,650 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 25 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 647.8ms TimeCoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2021-06-05 05:03:47,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2021-06-05 05:03:47,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 865. [2021-06-05 05:03:47,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 865 states, 864 states have (on average 3.346064814814815) internal successors, (2891), 864 states have internal predecessors, (2891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:03:47,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 865 states to 865 states and 2891 transitions. [2021-06-05 05:03:47,659 INFO L78 Accepts]: Start accepts. Automaton has 865 states and 2891 transitions. Word has length 23 [2021-06-05 05:03:47,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:03:47,659 INFO L482 AbstractCegarLoop]: Abstraction has 865 states and 2891 transitions. [2021-06-05 05:03:47,659 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:03:47,659 INFO L276 IsEmpty]: Start isEmpty. Operand 865 states and 2891 transitions. [2021-06-05 05:03:47,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-06-05 05:03:47,660 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:03:47,660 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:03:47,860 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 143 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9810 [2021-06-05 05:03:47,861 INFO L430 AbstractCegarLoop]: === Iteration 213 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:03:47,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:03:47,861 INFO L82 PathProgramCache]: Analyzing trace with hash -1964811731, now seen corresponding path program 116 times [2021-06-05 05:03:47,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:03:47,861 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587581745] [2021-06-05 05:03:47,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:03:47,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:03:48,010 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:03:48,010 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:03:48,010 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587581745] [2021-06-05 05:03:48,010 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587581745] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:03:48,010 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [458930060] [2021-06-05 05:03:48,010 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 144 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 144 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:03:48,044 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 05:03:48,044 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:03:48,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-05 05:03:48,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:03:48,252 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-06-05 05:03:48,252 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [458930060] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:03:48,252 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:03:48,252 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-06-05 05:03:48,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638372578] [2021-06-05 05:03:48,253 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 05:03:48,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:03:48,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 05:03:48,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2021-06-05 05:03:48,253 INFO L87 Difference]: Start difference. First operand 865 states and 2891 transitions. Second operand has 19 states, 19 states have (on average 2.210526315789474) internal successors, (42), 19 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:03:49,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:03:49,218 INFO L93 Difference]: Finished difference Result 1280 states and 4097 transitions. [2021-06-05 05:03:49,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-05 05:03:49,219 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.210526315789474) internal successors, (42), 19 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-06-05 05:03:49,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:03:49,220 INFO L225 Difference]: With dead ends: 1280 [2021-06-05 05:03:49,220 INFO L226 Difference]: Without dead ends: 1141 [2021-06-05 05:03:49,221 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 887.0ms TimeCoverageRelationStatistics Valid=196, Invalid=1286, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 05:03:49,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1141 states. [2021-06-05 05:03:49,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1141 to 895. [2021-06-05 05:03:49,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 895 states, 894 states have (on average 3.3333333333333335) internal successors, (2980), 894 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:03:49,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 2980 transitions. [2021-06-05 05:03:49,230 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 2980 transitions. Word has length 23 [2021-06-05 05:03:49,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:03:49,230 INFO L482 AbstractCegarLoop]: Abstraction has 895 states and 2980 transitions. [2021-06-05 05:03:49,230 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.210526315789474) internal successors, (42), 19 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:03:49,230 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 2980 transitions. [2021-06-05 05:03:49,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-06-05 05:03:49,231 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:03:49,231 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:03:49,432 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9981,144 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:03:49,433 INFO L430 AbstractCegarLoop]: === Iteration 214 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:03:49,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:03:49,433 INFO L82 PathProgramCache]: Analyzing trace with hash 637173943, now seen corresponding path program 117 times [2021-06-05 05:03:49,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:03:49,433 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022763067] [2021-06-05 05:03:49,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:03:49,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:03:49,605 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:03:49,605 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:03:49,605 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022763067] [2021-06-05 05:03:49,605 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022763067] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:03:49,605 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647199435] [2021-06-05 05:03:49,605 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 145 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 145 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:03:49,640 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 05:03:49,640 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:03:49,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-05 05:03:49,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:03:49,735 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:03:49,736 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:49,738 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:49,739 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:49,742 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:03:49,742 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:49,745 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:03:49,746 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:49,748 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:03:49,749 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:49,751 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:49,752 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:49,754 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:49,755 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:49,824 INFO L628 ElimStorePlain]: treesize reduction 82, result has 52.6 percent of original size [2021-06-05 05:03:49,826 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:03:49,827 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:49,870 INFO L628 ElimStorePlain]: treesize reduction 20, result has 74.7 percent of original size [2021-06-05 05:03:49,872 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: 2 dim-0 vars, and 3 xjuncts. [2021-06-05 05:03:49,872 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 3 variables, input treesize:293, output treesize:51 [2021-06-05 05:03:50,662 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:03:50,663 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [647199435] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:03:50,663 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:03:50,663 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 19 [2021-06-05 05:03:50,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504275041] [2021-06-05 05:03:50,663 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 05:03:50,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:03:50,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 05:03:50,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2021-06-05 05:03:50,663 INFO L87 Difference]: Start difference. First operand 895 states and 2980 transitions. Second operand has 19 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 19 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:03:51,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:03:51,699 INFO L93 Difference]: Finished difference Result 1340 states and 4330 transitions. [2021-06-05 05:03:51,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-05 05:03:51,699 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 19 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-06-05 05:03:51,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:03:51,701 INFO L225 Difference]: With dead ends: 1340 [2021-06-05 05:03:51,701 INFO L226 Difference]: Without dead ends: 1237 [2021-06-05 05:03:51,701 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 837.0ms TimeCoverageRelationStatistics Valid=127, Invalid=929, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 05:03:51,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1237 states. [2021-06-05 05:03:51,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1237 to 906. [2021-06-05 05:03:51,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 906 states, 905 states have (on average 3.3447513812154694) internal successors, (3027), 905 states have internal predecessors, (3027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:03:51,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 906 states to 906 states and 3027 transitions. [2021-06-05 05:03:51,711 INFO L78 Accepts]: Start accepts. Automaton has 906 states and 3027 transitions. Word has length 23 [2021-06-05 05:03:51,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:03:51,711 INFO L482 AbstractCegarLoop]: Abstraction has 906 states and 3027 transitions. [2021-06-05 05:03:51,711 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 19 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:03:51,711 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states and 3027 transitions. [2021-06-05 05:03:51,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-06-05 05:03:51,712 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:03:51,712 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:03:51,912 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 145 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9990 [2021-06-05 05:03:51,912 INFO L430 AbstractCegarLoop]: === Iteration 215 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:03:51,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:03:51,913 INFO L82 PathProgramCache]: Analyzing trace with hash -1959696387, now seen corresponding path program 118 times [2021-06-05 05:03:51,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:03:51,913 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296807538] [2021-06-05 05:03:51,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:03:51,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:03:52,075 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:03:52,075 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:03:52,075 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296807538] [2021-06-05 05:03:52,075 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296807538] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:03:52,075 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53003766] [2021-06-05 05:03:52,075 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 146 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 146 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:03:52,109 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 05:03:52,109 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:03:52,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-05 05:03:52,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:03:52,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:03:52,213 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:52,216 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:03:52,217 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:52,219 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:03:52,220 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:52,342 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 30 [2021-06-05 05:03:52,342 INFO L628 ElimStorePlain]: treesize reduction 92, result has 64.2 percent of original size [2021-06-05 05:03:52,345 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:03:52,346 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:52,348 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:52,349 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:52,351 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:03:52,352 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:52,354 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:52,354 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:52,401 INFO L628 ElimStorePlain]: treesize reduction 46, result has 56.2 percent of original size [2021-06-05 05:03:52,403 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: 2 dim-0 vars, and 3 xjuncts. [2021-06-05 05:03:52,403 INFO L247 ElimStorePlain]: Needed 8 recursive calls to eliminate 3 variables, input treesize:293, output treesize:51 [2021-06-05 05:03:52,963 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:03:52,964 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [53003766] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:03:52,964 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:03:52,964 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 19 [2021-06-05 05:03:52,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525358437] [2021-06-05 05:03:52,964 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 05:03:52,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:03:52,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 05:03:52,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2021-06-05 05:03:52,964 INFO L87 Difference]: Start difference. First operand 906 states and 3027 transitions. Second operand has 19 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 19 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:03:54,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:03:54,569 INFO L93 Difference]: Finished difference Result 1543 states and 4983 transitions. [2021-06-05 05:03:54,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-05 05:03:54,569 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 19 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-06-05 05:03:54,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:03:54,571 INFO L225 Difference]: With dead ends: 1543 [2021-06-05 05:03:54,571 INFO L226 Difference]: Without dead ends: 1420 [2021-06-05 05:03:54,571 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 388 ImplicationChecksByTransitivity, 1240.9ms TimeCoverageRelationStatistics Valid=214, Invalid=1508, Unknown=0, NotChecked=0, Total=1722 [2021-06-05 05:03:54,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1420 states. [2021-06-05 05:03:54,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1420 to 902. [2021-06-05 05:03:54,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 902 states, 901 states have (on average 3.3429522752497225) internal successors, (3012), 901 states have internal predecessors, (3012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:03:54,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 902 states to 902 states and 3012 transitions. [2021-06-05 05:03:54,582 INFO L78 Accepts]: Start accepts. Automaton has 902 states and 3012 transitions. Word has length 23 [2021-06-05 05:03:54,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:03:54,582 INFO L482 AbstractCegarLoop]: Abstraction has 902 states and 3012 transitions. [2021-06-05 05:03:54,582 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 19 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:03:54,582 INFO L276 IsEmpty]: Start isEmpty. Operand 902 states and 3012 transitions. [2021-06-05 05:03:54,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-06-05 05:03:54,583 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:03:54,583 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:03:54,784 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 146 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10211 [2021-06-05 05:03:54,784 INFO L430 AbstractCegarLoop]: === Iteration 216 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:03:54,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:03:54,784 INFO L82 PathProgramCache]: Analyzing trace with hash 904666145, now seen corresponding path program 119 times [2021-06-05 05:03:54,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:03:54,784 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357740745] [2021-06-05 05:03:54,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:03:54,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:03:54,956 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:03:54,956 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:03:54,956 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357740745] [2021-06-05 05:03:54,956 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357740745] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:03:54,956 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275656283] [2021-06-05 05:03:54,956 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 147 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 147 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:03:54,990 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 05:03:54,990 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:03:54,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 05:03:54,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:03:55,288 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2021-06-05 05:03:57,185 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:57,185 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:57,186 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:03:57,186 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:57,197 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:57,198 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:57,198 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 9 [2021-06-05 05:03:57,199 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:57,210 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:57,211 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:57,211 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:03:57,212 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:57,223 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:57,223 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:57,224 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:03:57,224 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:57,235 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:57,235 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:57,236 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:03:57,236 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:57,247 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:57,247 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:57,248 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:03:57,248 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:57,259 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:57,260 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:57,260 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 9 [2021-06-05 05:03:57,261 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:57,272 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:57,272 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:57,272 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:03:57,273 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:57,284 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:57,285 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 9 [2021-06-05 05:03:57,286 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:58,566 WARN L205 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 246 DAG size of output: 156 [2021-06-05 05:03:58,567 INFO L628 ElimStorePlain]: treesize reduction 2939, result has 24.8 percent of original size [2021-06-05 05:03:58,574 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:03:58,575 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:58,581 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:03:58,582 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:58,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:03:58,590 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:59,040 WARN L205 SmtUtils]: Spent 449.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2021-06-05 05:03:59,040 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:03:59,047 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:03:59,048 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:59,054 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:03:59,055 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:59,062 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:03:59,063 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:59,510 WARN L205 SmtUtils]: Spent 447.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2021-06-05 05:03:59,511 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:03:59,517 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:03:59,518 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:59,525 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:03:59,526 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:59,532 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:03:59,533 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:59,963 WARN L205 SmtUtils]: Spent 430.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2021-06-05 05:03:59,964 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:03:59,971 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:03:59,972 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:59,978 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:03:59,979 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:59,985 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:03:59,986 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:00,411 WARN L205 SmtUtils]: Spent 424.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2021-06-05 05:04:00,411 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:04:00,418 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:04:00,419 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:00,425 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:04:00,426 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:00,841 WARN L205 SmtUtils]: Spent 415.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2021-06-05 05:04:00,842 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:04:00,848 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:04:00,849 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:00,854 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:04:00,855 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:00,861 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:04:00,862 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:01,261 WARN L205 SmtUtils]: Spent 399.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2021-06-05 05:04:01,261 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:04:01,267 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:04:01,268 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:01,274 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:04:01,275 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:01,281 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:04:01,282 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:01,675 WARN L205 SmtUtils]: Spent 393.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2021-06-05 05:04:01,675 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:04:01,681 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:01,682 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:01,682 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:04:01,683 INFO L550 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:01,689 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:01,689 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:04:01,690 INFO L550 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:02,070 WARN L205 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2021-06-05 05:04:02,070 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:04:02,086 INFO L550 ElimStorePlain]: Start of recursive call 1: 9 dim-0 vars, 9 dim-1 vars, End of recursive call: 24 dim-0 vars, and 24 xjuncts. [2021-06-05 05:04:02,086 INFO L247 ElimStorePlain]: Needed 32 recursive calls to eliminate 18 variables, input treesize:4294, output treesize:831 [2021-06-05 05:04:02,560 WARN L205 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 293 DAG size of output: 194 [2021-06-05 05:04:02,853 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2021-06-05 05:04:03,175 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2021-06-05 05:04:04,351 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_374, v_prenex_386, v_prenex_378], 1=[char_at_1, v_prenex_380, v_prenex_381, v_prenex_382, v_prenex_383, v_prenex_384, v_prenex_385, v_prenex_375, v_prenex_376, v_prenex_387, v_prenex_377, v_prenex_379]} [2021-06-05 05:04:04,361 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:04:04,362 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:04,954 WARN L205 SmtUtils]: Spent 591.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 166 [2021-06-05 05:04:04,954 INFO L628 ElimStorePlain]: treesize reduction 880, result has 32.4 percent of original size [2021-06-05 05:04:04,962 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:04:04,963 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:05,141 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2021-06-05 05:04:05,141 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:04:05,149 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:04:05,150 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:05,325 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2021-06-05 05:04:05,326 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:04:05,333 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:04:05,334 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:05,510 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2021-06-05 05:04:05,511 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:04:05,518 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:04:05,519 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:05,693 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2021-06-05 05:04:05,693 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:04:05,701 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:04:05,702 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:05,872 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2021-06-05 05:04:05,873 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:04:05,880 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:04:05,881 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:06,048 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2021-06-05 05:04:06,049 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:04:06,056 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:04:06,057 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:06,223 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2021-06-05 05:04:06,223 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:04:06,230 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:04:06,231 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:06,392 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2021-06-05 05:04:06,393 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:04:06,400 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:04:06,400 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:06,557 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2021-06-05 05:04:06,557 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:04:06,564 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:04:06,565 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:06,731 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2021-06-05 05:04:06,731 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:04:06,737 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:04:06,738 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:06,892 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2021-06-05 05:04:06,892 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:04:06,898 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:04:06,899 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:07,050 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2021-06-05 05:04:07,050 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:04:07,056 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:04:07,057 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:07,204 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2021-06-05 05:04:07,204 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:04:07,210 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:04:07,211 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:07,357 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2021-06-05 05:04:07,357 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:04:07,361 INFO L550 ElimStorePlain]: Start of recursive call 1: 15 dim-0 vars, 15 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 05:04:07,361 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 30 variables, input treesize:1314, output treesize:116 [2021-06-05 05:04:07,551 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:04:07,552 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1275656283] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:04:07,552 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:04:07,552 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 19 [2021-06-05 05:04:07,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497226776] [2021-06-05 05:04:07,552 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 05:04:07,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:04:07,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 05:04:07,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2021-06-05 05:04:07,552 INFO L87 Difference]: Start difference. First operand 902 states and 3012 transitions. Second operand has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 19 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:04:08,293 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 70 [2021-06-05 05:04:08,771 WARN L205 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 203 [2021-06-05 05:04:09,320 WARN L205 SmtUtils]: Spent 474.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 143 [2021-06-05 05:04:09,763 WARN L205 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 197 [2021-06-05 05:04:10,268 WARN L205 SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 158 [2021-06-05 05:04:10,710 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 31 [2021-06-05 05:04:11,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:04:11,087 INFO L93 Difference]: Finished difference Result 1273 states and 4054 transitions. [2021-06-05 05:04:11,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-05 05:04:11,087 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 19 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-06-05 05:04:11,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:04:11,089 INFO L225 Difference]: With dead ends: 1273 [2021-06-05 05:04:11,089 INFO L226 Difference]: Without dead ends: 1193 [2021-06-05 05:04:11,089 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 16 SyntacticMatches, 4 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 4208.3ms TimeCoverageRelationStatistics Valid=181, Invalid=1079, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 05:04:11,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1193 states. [2021-06-05 05:04:11,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1193 to 906. [2021-06-05 05:04:11,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 906 states, 905 states have (on average 3.342541436464088) internal successors, (3025), 905 states have internal predecessors, (3025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:04:11,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 906 states to 906 states and 3025 transitions. [2021-06-05 05:04:11,098 INFO L78 Accepts]: Start accepts. Automaton has 906 states and 3025 transitions. Word has length 23 [2021-06-05 05:04:11,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:04:11,098 INFO L482 AbstractCegarLoop]: Abstraction has 906 states and 3025 transitions. [2021-06-05 05:04:11,099 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 19 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:04:11,099 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states and 3025 transitions. [2021-06-05 05:04:11,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-06-05 05:04:11,100 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:04:11,100 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:04:11,300 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10340,147 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:04:11,300 INFO L430 AbstractCegarLoop]: === Iteration 217 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:04:11,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:04:11,300 INFO L82 PathProgramCache]: Analyzing trace with hash -792578799, now seen corresponding path program 120 times [2021-06-05 05:04:11,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:04:11,301 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741834086] [2021-06-05 05:04:11,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:04:11,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:04:11,529 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:04:11,529 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:04:11,529 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741834086] [2021-06-05 05:04:11,529 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741834086] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:04:11,529 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1038405945] [2021-06-05 05:04:11,530 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 148 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 148 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:04:11,563 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 05:04:11,563 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:04:11,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-05 05:04:11,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:04:11,684 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:04:11,685 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:11,688 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:04:11,688 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:11,691 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:04:11,691 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:11,694 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:04:11,694 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:11,697 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:04:11,697 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:11,700 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:04:11,701 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:11,703 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:04:11,704 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:11,707 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:04:11,707 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:11,710 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:04:11,711 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:11,714 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:04:11,715 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:11,717 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:04:11,718 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:11,720 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:04:11,721 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:11,724 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:04:11,724 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:11,726 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:04:11,727 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:11,729 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:04:11,730 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:11,732 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:04:11,733 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:11,735 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:04:11,736 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:11,738 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:04:11,739 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:11,741 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:04:11,741 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:11,817 INFO L628 ElimStorePlain]: treesize reduction 31, result has 75.8 percent of original size [2021-06-05 05:04:11,820 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 3 dim-0 vars, and 4 xjuncts. [2021-06-05 05:04:11,820 INFO L247 ElimStorePlain]: Needed 20 recursive calls to eliminate 2 variables, input treesize:635, output treesize:89 [2021-06-05 05:04:12,509 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:12,509 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:12,509 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:04:12,510 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:12,514 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:12,514 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:12,515 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:04:12,515 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:12,519 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:12,519 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:12,520 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:04:12,521 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:12,524 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:04:12,525 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:12,529 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:04:12,529 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:12,532 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:04:12,533 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:12,631 INFO L628 ElimStorePlain]: treesize reduction 378, result has 18.7 percent of original size [2021-06-05 05:04:12,633 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:04:12,634 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:12,662 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:04:12,665 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:04:12,666 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:12,692 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:04:12,693 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-06-05 05:04:12,694 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 6 variables, input treesize:638, output treesize:37 [2021-06-05 05:04:12,804 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:04:12,804 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1038405945] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:04:12,804 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:04:12,804 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 20 [2021-06-05 05:04:12,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152696405] [2021-06-05 05:04:12,805 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 05:04:12,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:04:12,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 05:04:12,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2021-06-05 05:04:12,805 INFO L87 Difference]: Start difference. First operand 906 states and 3025 transitions. Second operand has 20 states, 20 states have (on average 2.05) internal successors, (41), 20 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:04:13,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:04:13,452 INFO L93 Difference]: Finished difference Result 1177 states and 3847 transitions. [2021-06-05 05:04:13,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-05 05:04:13,452 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.05) internal successors, (41), 20 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-06-05 05:04:13,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:04:13,454 INFO L225 Difference]: With dead ends: 1177 [2021-06-05 05:04:13,454 INFO L226 Difference]: Without dead ends: 1123 [2021-06-05 05:04:13,454 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 707.1ms TimeCoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2021-06-05 05:04:13,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states. [2021-06-05 05:04:13,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 878. [2021-06-05 05:04:13,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 878 states, 877 states have (on average 3.345496009122007) internal successors, (2934), 877 states have internal predecessors, (2934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:04:13,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 2934 transitions. [2021-06-05 05:04:13,463 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 2934 transitions. Word has length 23 [2021-06-05 05:04:13,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:04:13,463 INFO L482 AbstractCegarLoop]: Abstraction has 878 states and 2934 transitions. [2021-06-05 05:04:13,463 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.05) internal successors, (41), 20 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:04:13,464 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 2934 transitions. [2021-06-05 05:04:13,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-06-05 05:04:13,465 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:04:13,465 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:04:13,665 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11032,148 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:04:13,665 INFO L430 AbstractCegarLoop]: === Iteration 218 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:04:13,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:04:13,665 INFO L82 PathProgramCache]: Analyzing trace with hash 1333055051, now seen corresponding path program 121 times [2021-06-05 05:04:13,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:04:13,666 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289636281] [2021-06-05 05:04:13,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:04:13,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:04:13,875 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:04:13,875 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:04:13,875 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289636281] [2021-06-05 05:04:13,875 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289636281] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:04:13,875 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817488295] [2021-06-05 05:04:13,875 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 149 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 149 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:04:13,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:04:13,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-05 05:04:13,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:04:14,020 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:04:14,021 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:14,024 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:04:14,024 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:14,027 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:04:14,027 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:14,030 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:04:14,031 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:14,033 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:04:14,034 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:14,037 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 05:04:14,037 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:14,040 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:04:14,041 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:14,043 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:04:14,044 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:14,047 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:04:14,047 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:14,049 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:04:14,050 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:14,053 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:04:14,053 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:14,056 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:04:14,056 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:14,059 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:04:14,060 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:14,062 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:04:14,063 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:14,065 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:04:14,066 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:14,068 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:04:14,069 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:14,071 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:04:14,072 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:14,074 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:04:14,074 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:14,137 INFO L628 ElimStorePlain]: treesize reduction 12, result has 88.3 percent of original size [2021-06-05 05:04:14,140 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:04:14,141 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:14,184 INFO L628 ElimStorePlain]: treesize reduction 20, result has 74.7 percent of original size [2021-06-05 05:04:14,186 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: 2 dim-0 vars, and 3 xjuncts. [2021-06-05 05:04:14,186 INFO L247 ElimStorePlain]: Needed 20 recursive calls to eliminate 3 variables, input treesize:573, output treesize:51 [2021-06-05 05:04:14,727 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:04:14,727 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [817488295] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:04:14,727 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:04:14,727 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 19 [2021-06-05 05:04:14,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386248446] [2021-06-05 05:04:14,727 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 05:04:14,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:04:14,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 05:04:14,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2021-06-05 05:04:14,728 INFO L87 Difference]: Start difference. First operand 878 states and 2934 transitions. Second operand has 19 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 19 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:04:16,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:04:16,876 INFO L93 Difference]: Finished difference Result 1724 states and 5425 transitions. [2021-06-05 05:04:16,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-05 05:04:16,876 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 19 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-06-05 05:04:16,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:04:16,878 INFO L225 Difference]: With dead ends: 1724 [2021-06-05 05:04:16,878 INFO L226 Difference]: Without dead ends: 1556 [2021-06-05 05:04:16,879 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 669 ImplicationChecksByTransitivity, 1940.2ms TimeCoverageRelationStatistics Valid=382, Invalid=2374, Unknown=0, NotChecked=0, Total=2756 [2021-06-05 05:04:16,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1556 states. [2021-06-05 05:04:16,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1556 to 907. [2021-06-05 05:04:16,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 907 states, 906 states have (on average 3.3796909492273732) internal successors, (3062), 906 states have internal predecessors, (3062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:04:16,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 907 states to 907 states and 3062 transitions. [2021-06-05 05:04:16,890 INFO L78 Accepts]: Start accepts. Automaton has 907 states and 3062 transitions. Word has length 23 [2021-06-05 05:04:16,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:04:16,890 INFO L482 AbstractCegarLoop]: Abstraction has 907 states and 3062 transitions. [2021-06-05 05:04:16,890 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 19 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:04:16,890 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states and 3062 transitions. [2021-06-05 05:04:16,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-06-05 05:04:16,891 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:04:16,891 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:04:17,091 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11262,149 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:04:17,091 INFO L430 AbstractCegarLoop]: === Iteration 219 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:04:17,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:04:17,092 INFO L82 PathProgramCache]: Analyzing trace with hash -441126901, now seen corresponding path program 122 times [2021-06-05 05:04:17,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:04:17,092 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948613184] [2021-06-05 05:04:17,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:04:17,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:04:17,301 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:04:17,302 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:04:17,302 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948613184] [2021-06-05 05:04:17,302 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948613184] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:04:17,302 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1741086331] [2021-06-05 05:04:17,302 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 150 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 150 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:04:17,335 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 05:04:17,335 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:04:17,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-05 05:04:17,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:04:17,503 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:04:17,504 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:17,508 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:04:17,509 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:17,512 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:04:17,513 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:17,516 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:04:17,516 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:17,626 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 37 [2021-06-05 05:04:17,626 INFO L628 ElimStorePlain]: treesize reduction 110, result has 52.4 percent of original size [2021-06-05 05:04:17,629 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:04:17,630 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:17,706 INFO L628 ElimStorePlain]: treesize reduction 25, result has 78.4 percent of original size [2021-06-05 05:04:17,706 INFO L518 ElimStorePlain]: Eliminatee v_prenex_396 vanished before elimination [2021-06-05 05:04:17,708 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:04:17,709 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:17,752 INFO L628 ElimStorePlain]: treesize reduction 20, result has 74.7 percent of original size [2021-06-05 05:04:17,754 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 4 dim-1 vars, End of recursive call: 2 dim-0 vars, and 3 xjuncts. [2021-06-05 05:04:17,754 INFO L247 ElimStorePlain]: Needed 7 recursive calls to eliminate 5 variables, input treesize:291, output treesize:51 [2021-06-05 05:04:18,816 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:18,816 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:18,817 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:04:18,817 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:18,821 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:18,821 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:18,821 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:04:18,822 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:18,826 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:18,826 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:18,826 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 05:04:18,827 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:18,830 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:04:18,831 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:18,834 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:18,834 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:18,835 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 05:04:18,835 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:18,838 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:04:18,839 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:18,952 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 35 [2021-06-05 05:04:18,952 INFO L628 ElimStorePlain]: treesize reduction 171, result has 38.7 percent of original size [2021-06-05 05:04:18,955 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:04:18,956 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:18,958 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:04:18,959 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:19,002 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:04:19,003 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-06-05 05:04:19,003 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 4 variables, input treesize:429, output treesize:47 [2021-06-05 05:04:19,109 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:04:19,109 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1741086331] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:04:19,109 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:04:19,109 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 19 [2021-06-05 05:04:19,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876932855] [2021-06-05 05:04:19,109 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 05:04:19,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:04:19,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 05:04:19,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2021-06-05 05:04:19,109 INFO L87 Difference]: Start difference. First operand 907 states and 3062 transitions. Second operand has 19 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 19 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:04:21,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:04:21,233 INFO L93 Difference]: Finished difference Result 1696 states and 5324 transitions. [2021-06-05 05:04:21,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 05:04:21,234 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 19 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-06-05 05:04:21,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:04:21,236 INFO L225 Difference]: With dead ends: 1696 [2021-06-05 05:04:21,236 INFO L226 Difference]: Without dead ends: 1528 [2021-06-05 05:04:21,236 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 1824.1ms TimeCoverageRelationStatistics Valid=301, Invalid=2149, Unknown=0, NotChecked=0, Total=2450 [2021-06-05 05:04:21,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1528 states. [2021-06-05 05:04:21,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1528 to 843. [2021-06-05 05:04:21,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 843 states, 842 states have (on average 3.33729216152019) internal successors, (2810), 842 states have internal predecessors, (2810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:04:21,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 843 states to 843 states and 2810 transitions. [2021-06-05 05:04:21,247 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 2810 transitions. Word has length 23 [2021-06-05 05:04:21,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:04:21,247 INFO L482 AbstractCegarLoop]: Abstraction has 843 states and 2810 transitions. [2021-06-05 05:04:21,247 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 19 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:04:21,247 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 2810 transitions. [2021-06-05 05:04:21,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-06-05 05:04:21,248 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:04:21,248 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:04:21,448 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11394,150 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:04:21,448 INFO L430 AbstractCegarLoop]: === Iteration 220 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:04:21,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:04:21,449 INFO L82 PathProgramCache]: Analyzing trace with hash -425719973, now seen corresponding path program 123 times [2021-06-05 05:04:21,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:04:21,449 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791410723] [2021-06-05 05:04:21,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:04:21,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:04:21,601 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:04:21,601 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:04:21,601 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791410723] [2021-06-05 05:04:21,601 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791410723] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:04:21,601 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1470449678] [2021-06-05 05:04:21,601 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 151 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 151 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:04:21,636 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-06-05 05:04:21,636 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:04:21,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-05 05:04:21,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:04:21,716 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:04:21,717 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:21,719 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:04:21,720 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:21,723 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:04:21,723 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:21,726 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:04:21,726 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:21,729 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 05:04:21,730 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:21,732 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:04:21,733 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:21,735 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:04:21,736 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:21,738 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:04:21,739 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:21,741 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:04:21,742 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:21,744 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:04:21,745 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:21,747 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:04:21,748 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:21,750 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:04:21,750 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:21,753 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:04:21,753 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:21,756 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:04:21,756 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:21,758 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:04:21,759 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:21,818 INFO L628 ElimStorePlain]: treesize reduction 89, result has 47.0 percent of original size [2021-06-05 05:04:21,820 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 05:04:21,821 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:21,866 INFO L628 ElimStorePlain]: treesize reduction 17, result has 74.6 percent of original size [2021-06-05 05:04:21,868 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: 2 dim-0 vars, and 3 xjuncts. [2021-06-05 05:04:21,868 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 3 variables, input treesize:508, output treesize:42 [2021-06-05 05:04:22,252 WARN L205 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 74 [2021-06-05 05:04:23,814 WARN L205 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 50 [2021-06-05 05:04:24,250 WARN L205 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 77 [2021-06-05 05:04:24,654 WARN L205 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 48 [2021-06-05 05:04:26,412 WARN L205 SmtUtils]: Spent 596.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 50 Received shutdown request... [2021-06-05 05:04:27,028 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 151 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11773 [2021-06-05 05:04:27,029 WARN L547 AbstractCegarLoop]: Verification canceled [2021-06-05 05:04:27,030 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-05 05:04:27,031 WARN L196 ceAbstractionStarter]: Timeout [2021-06-05 05:04:27,032 INFO L202 PluginConnector]: Adding new model poker-hand-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.06 05:04:27 BasicIcfg [2021-06-05 05:04:27,032 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-05 05:04:27,032 INFO L168 Benchmark]: Toolchain (without parser) took 813470.23 ms. Allocated memory was 348.1 MB in the beginning and 1.3 GB in the end (delta: 952.1 MB). Free memory was 326.2 MB in the beginning and 893.7 MB in the end (delta: -567.5 MB). Peak memory consumption was 789.3 MB. Max. memory is 16.0 GB. [2021-06-05 05:04:27,032 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.15 ms. Allocated memory is still 348.1 MB. Free memory is still 328.7 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 05:04:27,032 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.25 ms. Allocated memory is still 348.1 MB. Free memory was 326.2 MB in the beginning and 324.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 05:04:27,032 INFO L168 Benchmark]: Boogie Preprocessor took 48.88 ms. Allocated memory is still 348.1 MB. Free memory was 324.4 MB in the beginning and 322.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 05:04:27,032 INFO L168 Benchmark]: RCFGBuilder took 952.16 ms. Allocated memory is still 348.1 MB. Free memory was 322.4 MB in the beginning and 277.4 MB in the end (delta: 45.0 MB). Peak memory consumption was 47.0 MB. Max. memory is 16.0 GB. [2021-06-05 05:04:27,032 INFO L168 Benchmark]: TraceAbstraction took 812413.51 ms. Allocated memory was 348.1 MB in the beginning and 1.3 GB in the end (delta: 952.1 MB). Free memory was 277.4 MB in the beginning and 893.7 MB in the end (delta: -616.3 MB). Peak memory consumption was 738.1 MB. Max. memory is 16.0 GB. [2021-06-05 05:04:27,033 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.15 ms. Allocated memory is still 348.1 MB. Free memory is still 328.7 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 50.25 ms. Allocated memory is still 348.1 MB. Free memory was 326.2 MB in the beginning and 324.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 48.88 ms. Allocated memory is still 348.1 MB. Free memory was 324.4 MB in the beginning and 322.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 952.16 ms. Allocated memory is still 348.1 MB. Free memory was 322.4 MB in the beginning and 277.4 MB in the end (delta: 45.0 MB). Peak memory consumption was 47.0 MB. Max. memory is 16.0 GB. * TraceAbstraction took 812413.51 ms. Allocated memory was 348.1 MB in the beginning and 1.3 GB in the end (delta: 952.1 MB). Free memory was 277.4 MB in the beginning and 893.7 MB in the end (delta: -616.3 MB). Peak memory consumption was 738.1 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 293]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 24 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while QuantifierPusher was running 1 iterations of DualJunctionQuantifierElimination. - TimeoutResultAtElement [Line: 292]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 24 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while QuantifierPusher was running 1 iterations of DualJunctionQuantifierElimination. - TimeoutResultAtElement [Line: 289]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 24 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while QuantifierPusher was running 1 iterations of DualJunctionQuantifierElimination. - TimeoutResultAtElement [Line: 299]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while BasicCegarLoop was analyzing trace of length 24 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while QuantifierPusher was running 1 iterations of DualJunctionQuantifierElimination. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 44 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 812306.5ms, OverallIterations: 220, TraceHistogramMax: 2, EmptinessCheckTime: 212.5ms, AutomataDifference: 157876.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 37.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 14301 SDtfs, 20627 SDslu, 76885 SDs, 0 SdLazy, 69815 SolverSat, 4524 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 33977.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7741 GetRequests, 3305 SyntacticMatches, 119 SemanticMatches, 4317 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32866 ImplicationChecksByTransitivity, 152611.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=907occurred in iteration=218, InterpolantAutomatonStates: 3502, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 2001.9ms AutomataMinimizationTime, 219 MinimizatonAttempts, 47826 StatesRemovedByMinimization, 213 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1023.4ms SsaConstructionTime, 2522.1ms SatisfiabilityAnalysisTime, 608784.6ms InterpolantComputationTime, 7520 NumberOfCodeBlocks, 7507 NumberOfCodeBlocksAsserted, 530 NumberOfCheckSat, 7152 ConstructedInterpolants, 155 QuantifiedInterpolants, 112609 SizeOfPredicates, 1096 NumberOfNonLiveVariables, 13634 ConjunctsInSsa, 2313 ConjunctsInUnsatCore, 368 InterpolantComputations, 77 PerfectInterpolantSequences, 659/1847 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown