/usr/bin/java -Xmx8000000000 -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-subst.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-a47a088281b0b97d17910950432b7c5b5bc3adeb-a47a088 [2021-07-13 19:39:48,627 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-13 19:39:48,629 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-13 19:39:48,658 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-13 19:39:48,724 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-13 19:39:48,724 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-13 19:39:48,725 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-13 19:39:48,726 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 [2021-07-13 19:39:48,750 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-13 19:39:48,750 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-13 19:39:48,750 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-13 19:39:48,750 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-13 19:39:48,752 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-13 19:39:48,752 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-13 19:39:48,752 INFO L138 SettingsManager]: * Use SBE=true [2021-07-13 19:39:48,752 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-13 19:39:48,752 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-13 19:39:48,752 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-13 19:39:48,753 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-13 19:39:48,753 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-13 19:39:48,753 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-13 19:39:48,753 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-13 19:39:48,753 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-13 19:39:48,753 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-13 19:39:48,754 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-13 19:39:48,754 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-13 19:39:48,754 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-13 19:39:48,754 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-13 19:39:48,754 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-13 19:39:48,754 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-13 19:39:48,754 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-13 19:39:48,754 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-13 19:39:48,754 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-13 19:39:48,754 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-13 19:39:48,768 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-13 19:39:48,769 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-13 19:39:48,769 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-13 19:39:48,769 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-13 19:39:48,769 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-13 19:39:48,769 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-13 19:39:49,004 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-13 19:39:49,020 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-13 19:39:49,022 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-13 19:39:49,022 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-13 19:39:49,024 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-13 19:39:49,024 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/poker-hand-subst.wvr.bpl [2021-07-13 19:39:49,024 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/poker-hand-subst.wvr.bpl' [2021-07-13 19:39:49,062 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-13 19:39:49,063 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-13 19:39:49,065 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-13 19:39:49,065 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-13 19:39:49,065 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-13 19:39:49,072 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "poker-hand-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 07:39:49" (1/1) ... [2021-07-13 19:39:49,093 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "poker-hand-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 07:39:49" (1/1) ... [2021-07-13 19:39:49,099 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-13 19:39:49,100 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-13 19:39:49,100 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-13 19:39:49,101 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-13 19:39:49,106 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "poker-hand-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 07:39:49" (1/1) ... [2021-07-13 19:39:49,106 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "poker-hand-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 07:39:49" (1/1) ... [2021-07-13 19:39:49,116 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "poker-hand-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 07:39:49" (1/1) ... [2021-07-13 19:39:49,116 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "poker-hand-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 07:39:49" (1/1) ... [2021-07-13 19:39:49,128 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "poker-hand-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 07:39:49" (1/1) ... [2021-07-13 19:39:49,131 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "poker-hand-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 07:39:49" (1/1) ... [2021-07-13 19:39:49,132 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "poker-hand-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 07:39:49" (1/1) ... [2021-07-13 19:39:49,134 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-13 19:39:49,135 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-13 19:39:49,135 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-13 19:39:49,135 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-13 19:39:49,136 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "poker-hand-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 07:39:49" (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 [2021-07-13 19:39:49,186 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-07-13 19:39:49,186 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-07-13 19:39:49,186 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-07-13 19:39:49,186 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-07-13 19:39:49,187 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-07-13 19:39:49,187 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-07-13 19:39:49,187 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-13 19:39:49,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-13 19:39:49,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-13 19:39:49,187 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-07-13 19:39:49,187 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-07-13 19:39:49,187 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-07-13 19:39:49,188 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-13 19:39:49,730 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-13 19:39:49,730 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-07-13 19:39:49,731 INFO L202 PluginConnector]: Adding new model poker-hand-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 07:39:49 BoogieIcfgContainer [2021-07-13 19:39:49,731 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-13 19:39:49,733 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-13 19:39:49,733 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-13 19:39:49,734 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-13 19:39:49,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "poker-hand-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 07:39:49" (1/2) ... [2021-07-13 19:39:49,735 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c784a5 and model type poker-hand-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 07:39:49, skipping insertion in model container [2021-07-13 19:39:49,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "poker-hand-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 07:39:49" (2/2) ... [2021-07-13 19:39:49,736 INFO L111 eAbstractionObserver]: Analyzing ICFG poker-hand-subst.wvr.bpl [2021-07-13 19:39:49,740 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-13 19:39:49,740 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-13 19:39:49,740 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-13 19:39:49,740 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-13 19:39:49,761 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-07-13 19:39:49,775 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-07-13 19:39:49,786 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-13 19:39:49,786 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-13 19:39:49,786 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-13 19:39:49,787 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-13 19:39:49,787 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-13 19:39:49,787 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-13 19:39:49,787 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-13 19:39:49,787 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-13 19:39:49,792 INFO L110 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 35 places, 37 transitions, 98 flow [2021-07-13 19:39:49,810 INFO L132 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 189 states, 188 states have (on average 4.468085106382978) internal successors, (840), 188 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:39:49,813 INFO L276 IsEmpty]: Start isEmpty. Operand has 189 states, 188 states have (on average 4.468085106382978) internal successors, (840), 188 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:39:49,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-07-13 19:39:49,823 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:39:49,823 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:39:49,823 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:39:49,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:39:49,827 INFO L82 PathProgramCache]: Analyzing trace with hash 2024028845, now seen corresponding path program 1 times [2021-07-13 19:39:49,832 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:39:49,832 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086384843] [2021-07-13 19:39:49,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:39:49,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:39:50,365 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 80 [2021-07-13 19:39:50,671 WARN L205 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 87 [2021-07-13 19:39:50,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:39:50,730 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:39:50,730 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086384843] [2021-07-13 19:39:50,731 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086384843] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:39:50,731 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:39:50,731 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-13 19:39:50,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34640488] [2021-07-13 19:39:50,734 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-13 19:39:50,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:39:50,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-13 19:39:50,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-07-13 19:39:50,746 INFO L87 Difference]: Start difference. First operand has 189 states, 188 states have (on average 4.468085106382978) internal successors, (840), 188 states have internal predecessors, (840), 0 states have call successors, (0), 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) [2021-07-13 19:39:50,969 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2021-07-13 19:39:51,247 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2021-07-13 19:39:51,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:39:51,315 INFO L93 Difference]: Finished difference Result 474 states and 1876 transitions. [2021-07-13 19:39:51,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-13 19:39:51,316 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 [2021-07-13 19:39:51,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:39:51,328 INFO L225 Difference]: With dead ends: 474 [2021-07-13 19:39:51,328 INFO L226 Difference]: Without dead ends: 459 [2021-07-13 19:39:51,334 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 816.6ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-07-13 19:39:51,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2021-07-13 19:39:51,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 223. [2021-07-13 19:39:51,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 222 states have (on average 4.324324324324325) internal successors, (960), 222 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:39:51,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 960 transitions. [2021-07-13 19:39:51,400 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 960 transitions. Word has length 14 [2021-07-13 19:39:51,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:39:51,400 INFO L482 AbstractCegarLoop]: Abstraction has 223 states and 960 transitions. [2021-07-13 19:39:51,401 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) [2021-07-13 19:39:51,401 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 960 transitions. [2021-07-13 19:39:51,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-07-13 19:39:51,402 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:39:51,402 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:39:51,403 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-13 19:39:51,403 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:39:51,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:39:51,403 INFO L82 PathProgramCache]: Analyzing trace with hash 1233644461, now seen corresponding path program 2 times [2021-07-13 19:39:51,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:39:51,404 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7460448] [2021-07-13 19:39:51,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:39:51,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:39:51,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:39:51,731 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:39:51,731 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7460448] [2021-07-13 19:39:51,731 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7460448] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:39:51,731 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:39:51,731 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-13 19:39:51,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836699566] [2021-07-13 19:39:51,735 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-13 19:39:51,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:39:51,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-13 19:39:51,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-07-13 19:39:51,737 INFO L87 Difference]: Start difference. First operand 223 states and 960 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) [2021-07-13 19:39:51,973 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-07-13 19:39:52,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:39:52,215 INFO L93 Difference]: Finished difference Result 685 states and 2857 transitions. [2021-07-13 19:39:52,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-13 19:39:52,215 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 [2021-07-13 19:39:52,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:39:52,219 INFO L225 Difference]: With dead ends: 685 [2021-07-13 19:39:52,219 INFO L226 Difference]: Without dead ends: 670 [2021-07-13 19:39:52,220 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 455.6ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-07-13 19:39:52,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2021-07-13 19:39:52,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 227. [2021-07-13 19:39:52,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 226 states have (on average 4.300884955752212) internal successors, (972), 226 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:39:52,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 972 transitions. [2021-07-13 19:39:52,232 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 972 transitions. Word has length 14 [2021-07-13 19:39:52,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:39:52,232 INFO L482 AbstractCegarLoop]: Abstraction has 227 states and 972 transitions. [2021-07-13 19:39:52,233 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) [2021-07-13 19:39:52,233 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 972 transitions. [2021-07-13 19:39:52,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-07-13 19:39:52,234 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:39:52,234 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:39:52,234 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-13 19:39:52,234 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:39:52,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:39:52,235 INFO L82 PathProgramCache]: Analyzing trace with hash -1840634711, now seen corresponding path program 3 times [2021-07-13 19:39:52,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:39:52,235 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539457999] [2021-07-13 19:39:52,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:39:52,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:39:52,499 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 70 [2021-07-13 19:39:52,612 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 111 [2021-07-13 19:39:53,009 WARN L205 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 81 [2021-07-13 19:39:53,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:39:53,123 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:39:53,123 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539457999] [2021-07-13 19:39:53,123 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539457999] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:39:53,123 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:39:53,123 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-13 19:39:53,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919383840] [2021-07-13 19:39:53,124 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-13 19:39:53,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:39:53,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-13 19:39:53,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-07-13 19:39:53,124 INFO L87 Difference]: Start difference. First operand 227 states and 972 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) [2021-07-13 19:39:53,577 WARN L205 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 128 [2021-07-13 19:39:53,908 WARN L205 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 115 [2021-07-13 19:39:54,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:39:54,055 INFO L93 Difference]: Finished difference Result 506 states and 2014 transitions. [2021-07-13 19:39:54,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-13 19:39:54,055 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 [2021-07-13 19:39:54,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:39:54,058 INFO L225 Difference]: With dead ends: 506 [2021-07-13 19:39:54,058 INFO L226 Difference]: Without dead ends: 491 [2021-07-13 19:39:54,058 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1360.4ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-07-13 19:39:54,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2021-07-13 19:39:54,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 234. [2021-07-13 19:39:54,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 233 states have (on average 4.309012875536481) internal successors, (1004), 233 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:39:54,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 1004 transitions. [2021-07-13 19:39:54,068 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 1004 transitions. Word has length 14 [2021-07-13 19:39:54,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:39:54,068 INFO L482 AbstractCegarLoop]: Abstraction has 234 states and 1004 transitions. [2021-07-13 19:39:54,068 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) [2021-07-13 19:39:54,068 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 1004 transitions. [2021-07-13 19:39:54,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-07-13 19:39:54,069 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:39:54,069 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:39:54,069 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-13 19:39:54,070 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:39:54,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:39:54,070 INFO L82 PathProgramCache]: Analyzing trace with hash -867555397, now seen corresponding path program 4 times [2021-07-13 19:39:54,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:39:54,070 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426796099] [2021-07-13 19:39:54,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:39:54,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:39:54,569 WARN L205 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 64 [2021-07-13 19:39:55,104 WARN L205 SmtUtils]: Spent 446.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 98 [2021-07-13 19:39:55,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:39:55,208 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:39:55,208 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426796099] [2021-07-13 19:39:55,208 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426796099] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:39:55,208 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:39:55,208 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-13 19:39:55,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105851361] [2021-07-13 19:39:55,209 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-13 19:39:55,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:39:55,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-13 19:39:55,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-07-13 19:39:55,209 INFO L87 Difference]: Start difference. First operand 234 states and 1004 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) [2021-07-13 19:39:55,617 WARN L205 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 129 [2021-07-13 19:39:55,950 WARN L205 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 117 [2021-07-13 19:39:56,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:39:56,057 INFO L93 Difference]: Finished difference Result 526 states and 2085 transitions. [2021-07-13 19:39:56,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-13 19:39:56,057 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 [2021-07-13 19:39:56,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:39:56,060 INFO L225 Difference]: With dead ends: 526 [2021-07-13 19:39:56,060 INFO L226 Difference]: Without dead ends: 511 [2021-07-13 19:39:56,060 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1592.1ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-07-13 19:39:56,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2021-07-13 19:39:56,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 240. [2021-07-13 19:39:56,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 239 states have (on average 4.2803347280334725) internal successors, (1023), 239 states have internal predecessors, (1023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:39:56,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 1023 transitions. [2021-07-13 19:39:56,068 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 1023 transitions. Word has length 14 [2021-07-13 19:39:56,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:39:56,068 INFO L482 AbstractCegarLoop]: Abstraction has 240 states and 1023 transitions. [2021-07-13 19:39:56,069 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) [2021-07-13 19:39:56,069 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 1023 transitions. [2021-07-13 19:39:56,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-07-13 19:39:56,069 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:39:56,069 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:39:56,070 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-07-13 19:39:56,070 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:39:56,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:39:56,070 INFO L82 PathProgramCache]: Analyzing trace with hash 922889575, now seen corresponding path program 5 times [2021-07-13 19:39:56,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:39:56,070 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493874314] [2021-07-13 19:39:56,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:39:56,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:39:56,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:39:56,310 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:39:56,310 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493874314] [2021-07-13 19:39:56,311 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493874314] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:39:56,311 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:39:56,311 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-13 19:39:56,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869237210] [2021-07-13 19:39:56,311 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-13 19:39:56,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:39:56,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-13 19:39:56,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-07-13 19:39:56,312 INFO L87 Difference]: Start difference. First operand 240 states and 1023 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) [2021-07-13 19:39:56,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:39:56,649 INFO L93 Difference]: Finished difference Result 697 states and 2896 transitions. [2021-07-13 19:39:56,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-13 19:39:56,650 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 [2021-07-13 19:39:56,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:39:56,653 INFO L225 Difference]: With dead ends: 697 [2021-07-13 19:39:56,653 INFO L226 Difference]: Without dead ends: 682 [2021-07-13 19:39:56,653 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 346.4ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-07-13 19:39:56,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2021-07-13 19:39:56,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 242. [2021-07-13 19:39:56,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 241 states have (on average 4.2987551867219915) internal successors, (1036), 241 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:39:56,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 1036 transitions. [2021-07-13 19:39:56,663 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 1036 transitions. Word has length 14 [2021-07-13 19:39:56,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:39:56,663 INFO L482 AbstractCegarLoop]: Abstraction has 242 states and 1036 transitions. [2021-07-13 19:39:56,663 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) [2021-07-13 19:39:56,663 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 1036 transitions. [2021-07-13 19:39:56,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-07-13 19:39:56,664 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:39:56,664 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:39:56,664 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-07-13 19:39:56,664 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:39:56,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:39:56,665 INFO L82 PathProgramCache]: Analyzing trace with hash 594755113, now seen corresponding path program 6 times [2021-07-13 19:39:56,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:39:56,665 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100506324] [2021-07-13 19:39:56,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:39:56,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:39:56,892 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 80 [2021-07-13 19:39:57,173 WARN L205 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 85 [2021-07-13 19:39:57,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:39:57,222 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:39:57,222 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100506324] [2021-07-13 19:39:57,222 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100506324] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:39:57,222 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:39:57,222 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-13 19:39:57,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607466856] [2021-07-13 19:39:57,222 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-13 19:39:57,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:39:57,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-13 19:39:57,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-07-13 19:39:57,223 INFO L87 Difference]: Start difference. First operand 242 states and 1036 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) [2021-07-13 19:39:57,437 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2021-07-13 19:39:57,635 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2021-07-13 19:39:57,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:39:57,699 INFO L93 Difference]: Finished difference Result 505 states and 1974 transitions. [2021-07-13 19:39:57,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-13 19:39:57,699 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 [2021-07-13 19:39:57,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:39:57,702 INFO L225 Difference]: With dead ends: 505 [2021-07-13 19:39:57,702 INFO L226 Difference]: Without dead ends: 490 [2021-07-13 19:39:57,702 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 781.2ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-07-13 19:39:57,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2021-07-13 19:39:57,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 263. [2021-07-13 19:39:57,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 262 states have (on average 4.198473282442748) internal successors, (1100), 262 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) [2021-07-13 19:39:57,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 1100 transitions. [2021-07-13 19:39:57,710 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 1100 transitions. Word has length 14 [2021-07-13 19:39:57,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:39:57,710 INFO L482 AbstractCegarLoop]: Abstraction has 263 states and 1100 transitions. [2021-07-13 19:39:57,710 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) [2021-07-13 19:39:57,710 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 1100 transitions. [2021-07-13 19:39:57,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-07-13 19:39:57,711 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:39:57,711 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:39:57,711 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-07-13 19:39:57,711 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:39:57,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:39:57,712 INFO L82 PathProgramCache]: Analyzing trace with hash 1857764697, now seen corresponding path program 1 times [2021-07-13 19:39:57,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:39:57,712 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819918348] [2021-07-13 19:39:57,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:39:57,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:39:57,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:39:57,725 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:39:57,725 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819918348] [2021-07-13 19:39:57,725 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819918348] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:39:57,725 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:39:57,725 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-13 19:39:57,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391737813] [2021-07-13 19:39:57,725 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-13 19:39:57,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:39:57,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-13 19:39:57,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-13 19:39:57,726 INFO L87 Difference]: Start difference. First operand 263 states and 1100 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) [2021-07-13 19:39:57,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:39:57,731 INFO L93 Difference]: Finished difference Result 303 states and 1256 transitions. [2021-07-13 19:39:57,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-13 19:39:57,731 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 [2021-07-13 19:39:57,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:39:57,732 INFO L225 Difference]: With dead ends: 303 [2021-07-13 19:39:57,733 INFO L226 Difference]: Without dead ends: 303 [2021-07-13 19:39:57,733 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-13 19:39:57,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2021-07-13 19:39:57,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 303. [2021-07-13 19:39:57,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 302 states have (on average 4.158940397350993) internal successors, (1256), 302 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) [2021-07-13 19:39:57,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 1256 transitions. [2021-07-13 19:39:57,739 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 1256 transitions. Word has length 15 [2021-07-13 19:39:57,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:39:57,739 INFO L482 AbstractCegarLoop]: Abstraction has 303 states and 1256 transitions. [2021-07-13 19:39:57,739 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) [2021-07-13 19:39:57,739 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 1256 transitions. [2021-07-13 19:39:57,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-07-13 19:39:57,740 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:39:57,740 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:39:57,740 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-07-13 19:39:57,740 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:39:57,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:39:57,741 INFO L82 PathProgramCache]: Analyzing trace with hash -1849748711, now seen corresponding path program 1 times [2021-07-13 19:39:57,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:39:57,741 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518341572] [2021-07-13 19:39:57,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:39:57,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:39:57,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:39:57,750 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:39:57,751 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518341572] [2021-07-13 19:39:57,751 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518341572] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:39:57,751 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:39:57,751 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-13 19:39:57,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578398759] [2021-07-13 19:39:57,751 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-13 19:39:57,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:39:57,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-13 19:39:57,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-13 19:39:57,752 INFO L87 Difference]: Start difference. First operand 303 states and 1256 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) [2021-07-13 19:39:57,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:39:57,756 INFO L93 Difference]: Finished difference Result 343 states and 1412 transitions. [2021-07-13 19:39:57,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-13 19:39:57,756 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 [2021-07-13 19:39:57,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:39:57,758 INFO L225 Difference]: With dead ends: 343 [2021-07-13 19:39:57,758 INFO L226 Difference]: Without dead ends: 343 [2021-07-13 19:39:57,758 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-13 19:39:57,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2021-07-13 19:39:57,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 343. [2021-07-13 19:39:57,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 342 states have (on average 4.128654970760234) internal successors, (1412), 342 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:39:57,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 1412 transitions. [2021-07-13 19:39:57,765 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 1412 transitions. Word has length 15 [2021-07-13 19:39:57,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:39:57,765 INFO L482 AbstractCegarLoop]: Abstraction has 343 states and 1412 transitions. [2021-07-13 19:39:57,765 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) [2021-07-13 19:39:57,766 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 1412 transitions. [2021-07-13 19:39:57,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-07-13 19:39:57,766 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:39:57,766 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:39:57,767 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-07-13 19:39:57,767 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:39:57,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:39:57,767 INFO L82 PathProgramCache]: Analyzing trace with hash -1748926659, now seen corresponding path program 1 times [2021-07-13 19:39:57,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:39:57,767 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442921810] [2021-07-13 19:39:57,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:39:57,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:39:57,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:39:57,781 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:39:57,781 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442921810] [2021-07-13 19:39:57,781 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442921810] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:39:57,781 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:39:57,781 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-13 19:39:57,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796677401] [2021-07-13 19:39:57,781 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-13 19:39:57,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:39:57,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-13 19:39:57,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-13 19:39:57,782 INFO L87 Difference]: Start difference. First operand 343 states and 1412 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) [2021-07-13 19:39:57,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:39:57,786 INFO L93 Difference]: Finished difference Result 389 states and 1589 transitions. [2021-07-13 19:39:57,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-13 19:39:57,787 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 [2021-07-13 19:39:57,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:39:57,792 INFO L225 Difference]: With dead ends: 389 [2021-07-13 19:39:57,793 INFO L226 Difference]: Without dead ends: 389 [2021-07-13 19:39:57,795 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-13 19:39:57,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2021-07-13 19:39:57,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 389. [2021-07-13 19:39:57,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 4.095360824742268) internal successors, (1589), 388 states have internal predecessors, (1589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:39:57,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1589 transitions. [2021-07-13 19:39:57,804 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1589 transitions. Word has length 15 [2021-07-13 19:39:57,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:39:57,805 INFO L482 AbstractCegarLoop]: Abstraction has 389 states and 1589 transitions. [2021-07-13 19:39:57,805 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) [2021-07-13 19:39:57,805 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1589 transitions. [2021-07-13 19:39:57,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-07-13 19:39:57,806 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:39:57,806 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:39:57,806 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-07-13 19:39:57,806 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:39:57,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:39:57,807 INFO L82 PathProgramCache]: Analyzing trace with hash -2109293491, now seen corresponding path program 1 times [2021-07-13 19:39:57,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:39:57,807 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252504979] [2021-07-13 19:39:57,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:39:57,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:39:57,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:39:57,819 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:39:57,819 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252504979] [2021-07-13 19:39:57,819 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252504979] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:39:57,819 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:39:57,819 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-13 19:39:57,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124420202] [2021-07-13 19:39:57,820 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-13 19:39:57,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:39:57,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-13 19:39:57,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-13 19:39:57,821 INFO L87 Difference]: Start difference. First operand 389 states and 1589 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) [2021-07-13 19:39:57,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:39:57,826 INFO L93 Difference]: Finished difference Result 439 states and 1766 transitions. [2021-07-13 19:39:57,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-13 19:39:57,826 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 [2021-07-13 19:39:57,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:39:57,828 INFO L225 Difference]: With dead ends: 439 [2021-07-13 19:39:57,828 INFO L226 Difference]: Without dead ends: 439 [2021-07-13 19:39:57,828 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-13 19:39:57,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2021-07-13 19:39:57,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 439. [2021-07-13 19:39:57,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 438 states have (on average 4.031963470319635) internal successors, (1766), 438 states have internal predecessors, (1766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:39:57,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 1766 transitions. [2021-07-13 19:39:57,837 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 1766 transitions. Word has length 15 [2021-07-13 19:39:57,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:39:57,837 INFO L482 AbstractCegarLoop]: Abstraction has 439 states and 1766 transitions. [2021-07-13 19:39:57,837 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) [2021-07-13 19:39:57,837 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 1766 transitions. [2021-07-13 19:39:57,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-07-13 19:39:57,838 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:39:57,838 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:39:57,838 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-07-13 19:39:57,838 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:39:57,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:39:57,839 INFO L82 PathProgramCache]: Analyzing trace with hash 181705837, now seen corresponding path program 1 times [2021-07-13 19:39:57,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:39:57,839 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524273776] [2021-07-13 19:39:57,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:39:57,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:39:57,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:39:57,859 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:39:57,859 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524273776] [2021-07-13 19:39:57,859 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524273776] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:39:57,859 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:39:57,859 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-13 19:39:57,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965449106] [2021-07-13 19:39:57,859 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-13 19:39:57,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:39:57,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-13 19:39:57,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-13 19:39:57,860 INFO L87 Difference]: Start difference. First operand 439 states and 1766 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) [2021-07-13 19:39:57,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:39:57,865 INFO L93 Difference]: Finished difference Result 489 states and 1957 transitions. [2021-07-13 19:39:57,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-13 19:39:57,866 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 [2021-07-13 19:39:57,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:39:57,868 INFO L225 Difference]: With dead ends: 489 [2021-07-13 19:39:57,868 INFO L226 Difference]: Without dead ends: 489 [2021-07-13 19:39:57,868 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-13 19:39:57,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2021-07-13 19:39:57,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 489. [2021-07-13 19:39:57,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 488 states have (on average 4.010245901639344) internal successors, (1957), 488 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) [2021-07-13 19:39:57,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 1957 transitions. [2021-07-13 19:39:57,879 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 1957 transitions. Word has length 15 [2021-07-13 19:39:57,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:39:57,880 INFO L482 AbstractCegarLoop]: Abstraction has 489 states and 1957 transitions. [2021-07-13 19:39:57,880 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) [2021-07-13 19:39:57,880 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 1957 transitions. [2021-07-13 19:39:57,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-07-13 19:39:57,881 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:39:57,881 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:39:57,881 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-07-13 19:39:57,881 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:39:57,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:39:57,882 INFO L82 PathProgramCache]: Analyzing trace with hash 542072669, now seen corresponding path program 1 times [2021-07-13 19:39:57,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:39:57,882 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315140264] [2021-07-13 19:39:57,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:39:57,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:39:57,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:39:57,893 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:39:57,893 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315140264] [2021-07-13 19:39:57,893 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315140264] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:39:57,893 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:39:57,893 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-13 19:39:57,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291214334] [2021-07-13 19:39:57,895 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-13 19:39:57,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:39:57,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-13 19:39:57,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-13 19:39:57,895 INFO L87 Difference]: Start difference. First operand 489 states and 1957 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) [2021-07-13 19:39:57,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:39:57,900 INFO L93 Difference]: Finished difference Result 549 states and 2181 transitions. [2021-07-13 19:39:57,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-13 19:39:57,901 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 [2021-07-13 19:39:57,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:39:57,903 INFO L225 Difference]: With dead ends: 549 [2021-07-13 19:39:57,903 INFO L226 Difference]: Without dead ends: 549 [2021-07-13 19:39:57,904 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-13 19:39:57,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2021-07-13 19:39:57,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 549. [2021-07-13 19:39:57,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 548 states have (on average 3.97992700729927) internal successors, (2181), 548 states have internal predecessors, (2181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:39:57,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 2181 transitions. [2021-07-13 19:39:57,917 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 2181 transitions. Word has length 15 [2021-07-13 19:39:57,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:39:57,917 INFO L482 AbstractCegarLoop]: Abstraction has 549 states and 2181 transitions. [2021-07-13 19:39:57,918 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) [2021-07-13 19:39:57,918 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 2181 transitions. [2021-07-13 19:39:57,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-07-13 19:39:57,919 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:39:57,919 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:39:57,919 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-07-13 19:39:57,919 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:39:57,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:39:57,920 INFO L82 PathProgramCache]: Analyzing trace with hash 705140398, now seen corresponding path program 1 times [2021-07-13 19:39:57,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:39:57,920 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799533886] [2021-07-13 19:39:57,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:39:57,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:39:57,942 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-13 19:39:57,942 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:39:57,942 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799533886] [2021-07-13 19:39:57,942 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799533886] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:39:57,942 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:39:57,943 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-13 19:39:57,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431210399] [2021-07-13 19:39:57,943 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-13 19:39:57,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:39:57,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-13 19:39:57,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-13 19:39:57,944 INFO L87 Difference]: Start difference. First operand 549 states and 2181 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 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) [2021-07-13 19:39:57,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:39:57,978 INFO L93 Difference]: Finished difference Result 789 states and 2890 transitions. [2021-07-13 19:39:57,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-13 19:39:57,978 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 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 [2021-07-13 19:39:57,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:39:57,981 INFO L225 Difference]: With dead ends: 789 [2021-07-13 19:39:57,981 INFO L226 Difference]: Without dead ends: 689 [2021-07-13 19:39:57,981 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-13 19:39:57,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2021-07-13 19:39:57,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 565. [2021-07-13 19:39:57,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 564 states have (on average 3.891843971631206) internal successors, (2195), 564 states have internal predecessors, (2195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:39:57,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 2195 transitions. [2021-07-13 19:39:57,994 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 2195 transitions. Word has length 16 [2021-07-13 19:39:57,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:39:57,994 INFO L482 AbstractCegarLoop]: Abstraction has 565 states and 2195 transitions. [2021-07-13 19:39:57,994 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 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) [2021-07-13 19:39:57,994 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 2195 transitions. [2021-07-13 19:39:57,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-07-13 19:39:57,995 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:39:57,996 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:39:57,996 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-07-13 19:39:57,996 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:39:57,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:39:57,996 INFO L82 PathProgramCache]: Analyzing trace with hash -1842088947, now seen corresponding path program 1 times [2021-07-13 19:39:57,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:39:57,996 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065600793] [2021-07-13 19:39:57,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:39:58,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:39:58,146 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-13 19:39:58,146 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:39:58,147 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065600793] [2021-07-13 19:39:58,147 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065600793] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:39:58,147 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:39:58,147 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-13 19:39:58,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588120304] [2021-07-13 19:39:58,147 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-13 19:39:58,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:39:58,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-13 19:39:58,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-07-13 19:39:58,148 INFO L87 Difference]: Start difference. First operand 565 states and 2195 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) [2021-07-13 19:39:58,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:39:58,415 INFO L93 Difference]: Finished difference Result 1056 states and 3563 transitions. [2021-07-13 19:39:58,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-13 19:39:58,415 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 [2021-07-13 19:39:58,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:39:58,420 INFO L225 Difference]: With dead ends: 1056 [2021-07-13 19:39:58,420 INFO L226 Difference]: Without dead ends: 903 [2021-07-13 19:39:58,420 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 233.7ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-07-13 19:39:58,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 903 states. [2021-07-13 19:39:58,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 903 to 566. [2021-07-13 19:39:58,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 565 states have (on average 3.720353982300885) internal successors, (2102), 565 states have internal predecessors, (2102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:39:58,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 2102 transitions. [2021-07-13 19:39:58,434 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 2102 transitions. Word has length 16 [2021-07-13 19:39:58,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:39:58,434 INFO L482 AbstractCegarLoop]: Abstraction has 566 states and 2102 transitions. [2021-07-13 19:39:58,434 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) [2021-07-13 19:39:58,434 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 2102 transitions. [2021-07-13 19:39:58,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-07-13 19:39:58,435 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:39:58,436 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:39:58,436 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-07-13 19:39:58,436 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:39:58,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:39:58,436 INFO L82 PathProgramCache]: Analyzing trace with hash 768619160, now seen corresponding path program 1 times [2021-07-13 19:39:58,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:39:58,436 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307005737] [2021-07-13 19:39:58,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:39:58,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:39:58,483 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-13 19:39:58,483 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:39:58,483 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307005737] [2021-07-13 19:39:58,483 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307005737] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:39:58,483 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:39:58,483 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-13 19:39:58,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765439363] [2021-07-13 19:39:58,484 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-13 19:39:58,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:39:58,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-13 19:39:58,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-07-13 19:39:58,484 INFO L87 Difference]: Start difference. First operand 566 states and 2102 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) [2021-07-13 19:39:58,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:39:58,555 INFO L93 Difference]: Finished difference Result 783 states and 2589 transitions. [2021-07-13 19:39:58,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-13 19:39:58,555 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 [2021-07-13 19:39:58,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:39:58,558 INFO L225 Difference]: With dead ends: 783 [2021-07-13 19:39:58,558 INFO L226 Difference]: Without dead ends: 746 [2021-07-13 19:39:58,559 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 42.6ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-07-13 19:39:58,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2021-07-13 19:39:58,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 560. [2021-07-13 19:39:58,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 559 states have (on average 3.584973166368515) internal successors, (2004), 559 states have internal predecessors, (2004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:39:58,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 2004 transitions. [2021-07-13 19:39:58,571 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 2004 transitions. Word has length 16 [2021-07-13 19:39:58,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:39:58,572 INFO L482 AbstractCegarLoop]: Abstraction has 560 states and 2004 transitions. [2021-07-13 19:39:58,572 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) [2021-07-13 19:39:58,572 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 2004 transitions. [2021-07-13 19:39:58,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-07-13 19:39:58,573 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:39:58,573 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:39:58,574 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-07-13 19:39:58,574 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:39:58,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:39:58,574 INFO L82 PathProgramCache]: Analyzing trace with hash -881757258, now seen corresponding path program 1 times [2021-07-13 19:39:58,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:39:58,574 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777611207] [2021-07-13 19:39:58,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:39:58,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:39:58,657 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-13 19:39:58,657 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:39:58,657 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777611207] [2021-07-13 19:39:58,658 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777611207] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:39:58,659 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:39:58,659 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-13 19:39:58,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935461247] [2021-07-13 19:39:58,659 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-13 19:39:58,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:39:58,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-13 19:39:58,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-07-13 19:39:58,659 INFO L87 Difference]: Start difference. First operand 560 states and 2004 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) [2021-07-13 19:39:58,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:39:58,737 INFO L93 Difference]: Finished difference Result 870 states and 2899 transitions. [2021-07-13 19:39:58,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-13 19:39:58,738 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 [2021-07-13 19:39:58,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:39:58,741 INFO L225 Difference]: With dead ends: 870 [2021-07-13 19:39:58,741 INFO L226 Difference]: Without dead ends: 828 [2021-07-13 19:39:58,741 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 65.4ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-07-13 19:39:58,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2021-07-13 19:39:58,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 560. [2021-07-13 19:39:58,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 559 states have (on average 3.5778175313059033) internal successors, (2000), 559 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:39:58,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 2000 transitions. [2021-07-13 19:39:58,754 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 2000 transitions. Word has length 16 [2021-07-13 19:39:58,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:39:58,754 INFO L482 AbstractCegarLoop]: Abstraction has 560 states and 2000 transitions. [2021-07-13 19:39:58,754 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) [2021-07-13 19:39:58,754 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 2000 transitions. [2021-07-13 19:39:58,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-07-13 19:39:58,756 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:39:58,756 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:39:58,756 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-07-13 19:39:58,756 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:39:58,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:39:58,756 INFO L82 PathProgramCache]: Analyzing trace with hash -1488759573, now seen corresponding path program 1 times [2021-07-13 19:39:58,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:39:58,756 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116296819] [2021-07-13 19:39:58,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:39:58,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:39:59,098 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-13 19:39:59,098 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:39:59,098 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116296819] [2021-07-13 19:39:59,098 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116296819] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:39:59,098 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:39:59,098 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-13 19:39:59,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60344882] [2021-07-13 19:39:59,099 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-13 19:39:59,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:39:59,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-13 19:39:59,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-07-13 19:39:59,099 INFO L87 Difference]: Start difference. First operand 560 states and 2000 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) [2021-07-13 19:39:59,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:39:59,293 INFO L93 Difference]: Finished difference Result 839 states and 2793 transitions. [2021-07-13 19:39:59,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-13 19:39:59,293 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 [2021-07-13 19:39:59,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:39:59,297 INFO L225 Difference]: With dead ends: 839 [2021-07-13 19:39:59,297 INFO L226 Difference]: Without dead ends: 797 [2021-07-13 19:39:59,297 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 357.0ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-07-13 19:39:59,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797 states. [2021-07-13 19:39:59,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 560. [2021-07-13 19:39:59,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 559 states have (on average 3.5706618962432914) internal successors, (1996), 559 states have internal predecessors, (1996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:39:59,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 1996 transitions. [2021-07-13 19:39:59,310 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 1996 transitions. Word has length 16 [2021-07-13 19:39:59,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:39:59,310 INFO L482 AbstractCegarLoop]: Abstraction has 560 states and 1996 transitions. [2021-07-13 19:39:59,311 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) [2021-07-13 19:39:59,311 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 1996 transitions. [2021-07-13 19:39:59,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-07-13 19:39:59,312 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:39:59,312 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:39:59,312 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-07-13 19:39:59,312 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:39:59,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:39:59,312 INFO L82 PathProgramCache]: Analyzing trace with hash 185156587, now seen corresponding path program 1 times [2021-07-13 19:39:59,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:39:59,312 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260255760] [2021-07-13 19:39:59,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:39:59,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:39:59,336 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-13 19:39:59,336 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:39:59,336 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260255760] [2021-07-13 19:39:59,336 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260255760] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:39:59,336 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:39:59,337 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-13 19:39:59,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541007259] [2021-07-13 19:39:59,337 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-13 19:39:59,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:39:59,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-13 19:39:59,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-13 19:39:59,337 INFO L87 Difference]: Start difference. First operand 560 states and 1996 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 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) [2021-07-13 19:39:59,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:39:59,370 INFO L93 Difference]: Finished difference Result 694 states and 2293 transitions. [2021-07-13 19:39:59,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-13 19:39:59,371 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 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 [2021-07-13 19:39:59,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:39:59,373 INFO L225 Difference]: With dead ends: 694 [2021-07-13 19:39:59,373 INFO L226 Difference]: Without dead ends: 613 [2021-07-13 19:39:59,373 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-13 19:39:59,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2021-07-13 19:39:59,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 490. [2021-07-13 19:39:59,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 489 states have (on average 3.5337423312883436) internal successors, (1728), 489 states have internal predecessors, (1728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:39:59,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 1728 transitions. [2021-07-13 19:39:59,383 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 1728 transitions. Word has length 16 [2021-07-13 19:39:59,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:39:59,383 INFO L482 AbstractCegarLoop]: Abstraction has 490 states and 1728 transitions. [2021-07-13 19:39:59,383 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 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) [2021-07-13 19:39:59,383 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 1728 transitions. [2021-07-13 19:39:59,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-07-13 19:39:59,385 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:39:59,385 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:39:59,385 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-07-13 19:39:59,385 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:39:59,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:39:59,385 INFO L82 PathProgramCache]: Analyzing trace with hash 1866944204, now seen corresponding path program 2 times [2021-07-13 19:39:59,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:39:59,385 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768017351] [2021-07-13 19:39:59,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:39:59,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:39:59,437 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-13 19:39:59,437 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:39:59,437 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768017351] [2021-07-13 19:39:59,437 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768017351] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:39:59,437 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:39:59,437 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-13 19:39:59,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37756527] [2021-07-13 19:39:59,437 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-13 19:39:59,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:39:59,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-13 19:39:59,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-07-13 19:39:59,438 INFO L87 Difference]: Start difference. First operand 490 states and 1728 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) [2021-07-13 19:39:59,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:39:59,550 INFO L93 Difference]: Finished difference Result 937 states and 3020 transitions. [2021-07-13 19:39:59,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-13 19:39:59,550 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 [2021-07-13 19:39:59,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:39:59,554 INFO L225 Difference]: With dead ends: 937 [2021-07-13 19:39:59,554 INFO L226 Difference]: Without dead ends: 819 [2021-07-13 19:39:59,554 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 62.3ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-07-13 19:39:59,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2021-07-13 19:39:59,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 479. [2021-07-13 19:39:59,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 478 states have (on average 3.50418410041841) internal successors, (1675), 478 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:39:59,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 1675 transitions. [2021-07-13 19:39:59,566 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 1675 transitions. Word has length 16 [2021-07-13 19:39:59,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:39:59,566 INFO L482 AbstractCegarLoop]: Abstraction has 479 states and 1675 transitions. [2021-07-13 19:39:59,566 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) [2021-07-13 19:39:59,566 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 1675 transitions. [2021-07-13 19:39:59,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-07-13 19:39:59,567 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:39:59,567 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:39:59,567 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-07-13 19:39:59,567 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:39:59,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:39:59,568 INFO L82 PathProgramCache]: Analyzing trace with hash -1453708437, now seen corresponding path program 2 times [2021-07-13 19:39:59,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:39:59,568 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308219720] [2021-07-13 19:39:59,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:39:59,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:39:59,736 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-13 19:39:59,737 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:39:59,737 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308219720] [2021-07-13 19:39:59,737 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308219720] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:39:59,737 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:39:59,737 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-13 19:39:59,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30846882] [2021-07-13 19:39:59,738 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-13 19:39:59,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:39:59,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-13 19:39:59,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-07-13 19:39:59,738 INFO L87 Difference]: Start difference. First operand 479 states and 1675 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) [2021-07-13 19:39:59,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:39:59,974 INFO L93 Difference]: Finished difference Result 990 states and 3110 transitions. [2021-07-13 19:39:59,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-13 19:39:59,975 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 [2021-07-13 19:39:59,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:39:59,978 INFO L225 Difference]: With dead ends: 990 [2021-07-13 19:39:59,978 INFO L226 Difference]: Without dead ends: 861 [2021-07-13 19:39:59,978 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 218.6ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-07-13 19:39:59,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2021-07-13 19:39:59,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 447. [2021-07-13 19:39:59,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 446 states have (on average 3.3430493273542603) internal successors, (1491), 446 states have internal predecessors, (1491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:39:59,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 1491 transitions. [2021-07-13 19:39:59,988 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 1491 transitions. Word has length 16 [2021-07-13 19:39:59,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:39:59,988 INFO L482 AbstractCegarLoop]: Abstraction has 447 states and 1491 transitions. [2021-07-13 19:39:59,988 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) [2021-07-13 19:39:59,988 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 1491 transitions. [2021-07-13 19:39:59,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-07-13 19:39:59,989 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:39:59,989 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:39:59,989 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-07-13 19:39:59,989 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:39:59,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:39:59,989 INFO L82 PathProgramCache]: Analyzing trace with hash -1227931188, now seen corresponding path program 2 times [2021-07-13 19:39:59,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:39:59,989 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033864327] [2021-07-13 19:39:59,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:39:59,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:40:00,069 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-13 19:40:00,069 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:40:00,069 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033864327] [2021-07-13 19:40:00,069 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033864327] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:40:00,069 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:40:00,069 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-13 19:40:00,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370499535] [2021-07-13 19:40:00,070 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-13 19:40:00,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:40:00,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-13 19:40:00,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-07-13 19:40:00,070 INFO L87 Difference]: Start difference. First operand 447 states and 1491 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) [2021-07-13 19:40:00,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:40:00,230 INFO L93 Difference]: Finished difference Result 772 states and 2437 transitions. [2021-07-13 19:40:00,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-13 19:40:00,230 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 [2021-07-13 19:40:00,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:40:00,233 INFO L225 Difference]: With dead ends: 772 [2021-07-13 19:40:00,233 INFO L226 Difference]: Without dead ends: 749 [2021-07-13 19:40:00,233 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 122.9ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-07-13 19:40:00,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2021-07-13 19:40:00,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 447. [2021-07-13 19:40:00,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 446 states have (on average 3.3430493273542603) internal successors, (1491), 446 states have internal predecessors, (1491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:40:00,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 1491 transitions. [2021-07-13 19:40:00,242 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 1491 transitions. Word has length 16 [2021-07-13 19:40:00,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:40:00,242 INFO L482 AbstractCegarLoop]: Abstraction has 447 states and 1491 transitions. [2021-07-13 19:40:00,242 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) [2021-07-13 19:40:00,242 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 1491 transitions. [2021-07-13 19:40:00,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-07-13 19:40:00,243 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:40:00,243 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:40:00,243 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-07-13 19:40:00,243 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:40:00,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:40:00,244 INFO L82 PathProgramCache]: Analyzing trace with hash -1214418261, now seen corresponding path program 2 times [2021-07-13 19:40:00,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:40:00,244 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202153019] [2021-07-13 19:40:00,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:40:00,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:40:00,424 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 66 [2021-07-13 19:40:00,526 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-13 19:40:00,526 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:40:00,526 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202153019] [2021-07-13 19:40:00,526 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202153019] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:40:00,526 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:40:00,526 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-13 19:40:00,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657070859] [2021-07-13 19:40:00,526 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-13 19:40:00,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:40:00,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-13 19:40:00,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-07-13 19:40:00,527 INFO L87 Difference]: Start difference. First operand 447 states and 1491 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) [2021-07-13 19:40:00,670 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 95 [2021-07-13 19:40:00,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:40:00,884 INFO L93 Difference]: Finished difference Result 756 states and 2389 transitions. [2021-07-13 19:40:00,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-13 19:40:00,884 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 [2021-07-13 19:40:00,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:40:00,887 INFO L225 Difference]: With dead ends: 756 [2021-07-13 19:40:00,887 INFO L226 Difference]: Without dead ends: 729 [2021-07-13 19:40:00,887 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 487.5ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-07-13 19:40:00,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2021-07-13 19:40:00,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 447. [2021-07-13 19:40:00,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 446 states have (on average 3.3385650224215246) internal successors, (1489), 446 states have internal predecessors, (1489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:40:00,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 1489 transitions. [2021-07-13 19:40:00,895 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 1489 transitions. Word has length 16 [2021-07-13 19:40:00,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:40:00,895 INFO L482 AbstractCegarLoop]: Abstraction has 447 states and 1489 transitions. [2021-07-13 19:40:00,895 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) [2021-07-13 19:40:00,895 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 1489 transitions. [2021-07-13 19:40:00,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-07-13 19:40:00,896 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:40:00,896 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:40:00,896 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-07-13 19:40:00,896 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:40:00,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:40:00,897 INFO L82 PathProgramCache]: Analyzing trace with hash 423749436, now seen corresponding path program 3 times [2021-07-13 19:40:00,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:40:00,897 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690440137] [2021-07-13 19:40:00,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:40:00,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:40:00,928 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-13 19:40:00,928 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:40:00,928 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690440137] [2021-07-13 19:40:00,928 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690440137] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:40:00,928 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:40:00,929 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-13 19:40:00,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922397135] [2021-07-13 19:40:00,929 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-13 19:40:00,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:40:00,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-13 19:40:00,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-07-13 19:40:00,929 INFO L87 Difference]: Start difference. First operand 447 states and 1489 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) [2021-07-13 19:40:00,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:40:00,981 INFO L93 Difference]: Finished difference Result 570 states and 1746 transitions. [2021-07-13 19:40:00,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-13 19:40:00,981 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 [2021-07-13 19:40:00,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:40:00,982 INFO L225 Difference]: With dead ends: 570 [2021-07-13 19:40:00,983 INFO L226 Difference]: Without dead ends: 521 [2021-07-13 19:40:00,983 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 29.2ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-07-13 19:40:00,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2021-07-13 19:40:00,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 411. [2021-07-13 19:40:00,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 410 states have (on average 3.3) internal successors, (1353), 410 states have internal predecessors, (1353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:40:00,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 1353 transitions. [2021-07-13 19:40:00,989 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 1353 transitions. Word has length 16 [2021-07-13 19:40:00,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:40:00,990 INFO L482 AbstractCegarLoop]: Abstraction has 411 states and 1353 transitions. [2021-07-13 19:40:00,990 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) [2021-07-13 19:40:00,990 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 1353 transitions. [2021-07-13 19:40:00,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-07-13 19:40:00,991 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:40:00,991 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:40:00,991 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-07-13 19:40:00,991 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:40:00,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:40:00,991 INFO L82 PathProgramCache]: Analyzing trace with hash 486403162, now seen corresponding path program 3 times [2021-07-13 19:40:00,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:40:00,991 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087500605] [2021-07-13 19:40:00,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:40:00,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:40:01,028 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-13 19:40:01,028 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:40:01,028 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087500605] [2021-07-13 19:40:01,028 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087500605] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:40:01,028 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:40:01,028 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-13 19:40:01,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151662638] [2021-07-13 19:40:01,029 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-13 19:40:01,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:40:01,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-13 19:40:01,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-07-13 19:40:01,029 INFO L87 Difference]: Start difference. First operand 411 states and 1353 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) [2021-07-13 19:40:01,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:40:01,093 INFO L93 Difference]: Finished difference Result 529 states and 1624 transitions. [2021-07-13 19:40:01,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-13 19:40:01,093 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 [2021-07-13 19:40:01,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:40:01,095 INFO L225 Difference]: With dead ends: 529 [2021-07-13 19:40:01,095 INFO L226 Difference]: Without dead ends: 506 [2021-07-13 19:40:01,095 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 32.1ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-07-13 19:40:01,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2021-07-13 19:40:01,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 430. [2021-07-13 19:40:01,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 429 states have (on average 3.2634032634032635) internal successors, (1400), 429 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:40:01,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 1400 transitions. [2021-07-13 19:40:01,102 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 1400 transitions. Word has length 16 [2021-07-13 19:40:01,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:40:01,102 INFO L482 AbstractCegarLoop]: Abstraction has 430 states and 1400 transitions. [2021-07-13 19:40:01,102 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) [2021-07-13 19:40:01,102 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 1400 transitions. [2021-07-13 19:40:01,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-07-13 19:40:01,103 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:40:01,103 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:40:01,103 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-07-13 19:40:01,103 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:40:01,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:40:01,103 INFO L82 PathProgramCache]: Analyzing trace with hash -1119769510, now seen corresponding path program 4 times [2021-07-13 19:40:01,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:40:01,103 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160605692] [2021-07-13 19:40:01,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:40:01,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:40:01,148 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-13 19:40:01,149 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:40:01,149 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160605692] [2021-07-13 19:40:01,149 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160605692] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:40:01,149 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:40:01,149 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-13 19:40:01,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159838146] [2021-07-13 19:40:01,149 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-13 19:40:01,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:40:01,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-13 19:40:01,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-07-13 19:40:01,150 INFO L87 Difference]: Start difference. First operand 430 states and 1400 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) [2021-07-13 19:40:01,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:40:01,203 INFO L93 Difference]: Finished difference Result 537 states and 1643 transitions. [2021-07-13 19:40:01,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-13 19:40:01,204 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 [2021-07-13 19:40:01,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:40:01,205 INFO L225 Difference]: With dead ends: 537 [2021-07-13 19:40:01,205 INFO L226 Difference]: Without dead ends: 514 [2021-07-13 19:40:01,205 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 35.7ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-07-13 19:40:01,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2021-07-13 19:40:01,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 440. [2021-07-13 19:40:01,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 439 states have (on average 3.2460136674259683) internal successors, (1425), 439 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:40:01,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 1425 transitions. [2021-07-13 19:40:01,215 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 1425 transitions. Word has length 16 [2021-07-13 19:40:01,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:40:01,215 INFO L482 AbstractCegarLoop]: Abstraction has 440 states and 1425 transitions. [2021-07-13 19:40:01,216 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) [2021-07-13 19:40:01,216 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 1425 transitions. [2021-07-13 19:40:01,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-07-13 19:40:01,217 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:40:01,217 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:40:01,217 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-07-13 19:40:01,217 INFO L430 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:40:01,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:40:01,217 INFO L82 PathProgramCache]: Analyzing trace with hash 2014690215, now seen corresponding path program 3 times [2021-07-13 19:40:01,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:40:01,218 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565772719] [2021-07-13 19:40:01,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:40:01,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:40:01,383 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-07-13 19:40:01,409 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-13 19:40:01,409 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:40:01,409 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565772719] [2021-07-13 19:40:01,409 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565772719] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:40:01,409 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:40:01,409 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-13 19:40:01,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547038081] [2021-07-13 19:40:01,410 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-13 19:40:01,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:40:01,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-13 19:40:01,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-07-13 19:40:01,410 INFO L87 Difference]: Start difference. First operand 440 states and 1425 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) [2021-07-13 19:40:01,644 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 82 [2021-07-13 19:40:01,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:40:01,665 INFO L93 Difference]: Finished difference Result 558 states and 1685 transitions. [2021-07-13 19:40:01,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-13 19:40:01,665 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 [2021-07-13 19:40:01,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:40:01,666 INFO L225 Difference]: With dead ends: 558 [2021-07-13 19:40:01,666 INFO L226 Difference]: Without dead ends: 516 [2021-07-13 19:40:01,666 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 329.4ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-07-13 19:40:01,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2021-07-13 19:40:01,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 440. [2021-07-13 19:40:01,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 439 states have (on average 3.225512528473804) internal successors, (1416), 439 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:40:01,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 1416 transitions. [2021-07-13 19:40:01,673 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 1416 transitions. Word has length 16 [2021-07-13 19:40:01,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:40:01,673 INFO L482 AbstractCegarLoop]: Abstraction has 440 states and 1416 transitions. [2021-07-13 19:40:01,674 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) [2021-07-13 19:40:01,674 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 1416 transitions. [2021-07-13 19:40:01,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-07-13 19:40:01,675 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:40:01,675 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:40:01,675 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-07-13 19:40:01,675 INFO L430 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:40:01,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:40:01,675 INFO L82 PathProgramCache]: Analyzing trace with hash -1307197767, now seen corresponding path program 4 times [2021-07-13 19:40:01,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:40:01,675 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731932117] [2021-07-13 19:40:01,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:40:01,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:40:01,827 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-13 19:40:01,827 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:40:01,827 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731932117] [2021-07-13 19:40:01,827 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731932117] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:40:01,827 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:40:01,827 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-13 19:40:01,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965193121] [2021-07-13 19:40:01,828 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-13 19:40:01,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:40:01,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-13 19:40:01,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-07-13 19:40:01,828 INFO L87 Difference]: Start difference. First operand 440 states and 1416 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) [2021-07-13 19:40:02,073 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 87 [2021-07-13 19:40:02,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:40:02,093 INFO L93 Difference]: Finished difference Result 547 states and 1649 transitions. [2021-07-13 19:40:02,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-13 19:40:02,093 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 [2021-07-13 19:40:02,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:40:02,095 INFO L225 Difference]: With dead ends: 547 [2021-07-13 19:40:02,095 INFO L226 Difference]: Without dead ends: 514 [2021-07-13 19:40:02,095 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 308.0ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-07-13 19:40:02,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2021-07-13 19:40:02,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 440. [2021-07-13 19:40:02,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 439 states have (on average 3.214123006833713) internal successors, (1411), 439 states have internal predecessors, (1411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:40:02,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 1411 transitions. [2021-07-13 19:40:02,102 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 1411 transitions. Word has length 16 [2021-07-13 19:40:02,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:40:02,102 INFO L482 AbstractCegarLoop]: Abstraction has 440 states and 1411 transitions. [2021-07-13 19:40:02,102 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) [2021-07-13 19:40:02,102 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 1411 transitions. [2021-07-13 19:40:02,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-07-13 19:40:02,103 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:40:02,103 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:40:02,103 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-07-13 19:40:02,103 INFO L430 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:40:02,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:40:02,103 INFO L82 PathProgramCache]: Analyzing trace with hash 648487496, now seen corresponding path program 2 times [2021-07-13 19:40:02,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:40:02,104 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778783753] [2021-07-13 19:40:02,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:40:02,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:40:02,172 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-13 19:40:02,172 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:40:02,172 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778783753] [2021-07-13 19:40:02,172 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778783753] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:40:02,172 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:40:02,172 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-13 19:40:02,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221470554] [2021-07-13 19:40:02,172 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-13 19:40:02,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:40:02,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-13 19:40:02,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-07-13 19:40:02,173 INFO L87 Difference]: Start difference. First operand 440 states and 1411 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) [2021-07-13 19:40:02,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:40:02,240 INFO L93 Difference]: Finished difference Result 727 states and 2197 transitions. [2021-07-13 19:40:02,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-13 19:40:02,240 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 [2021-07-13 19:40:02,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:40:02,241 INFO L225 Difference]: With dead ends: 727 [2021-07-13 19:40:02,242 INFO L226 Difference]: Without dead ends: 679 [2021-07-13 19:40:02,242 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 53.5ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-07-13 19:40:02,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2021-07-13 19:40:02,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 430. [2021-07-13 19:40:02,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 429 states have (on average 3.191142191142191) internal successors, (1369), 429 states have internal predecessors, (1369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:40:02,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 1369 transitions. [2021-07-13 19:40:02,259 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 1369 transitions. Word has length 16 [2021-07-13 19:40:02,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:40:02,259 INFO L482 AbstractCegarLoop]: Abstraction has 430 states and 1369 transitions. [2021-07-13 19:40:02,260 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) [2021-07-13 19:40:02,260 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 1369 transitions. [2021-07-13 19:40:02,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-07-13 19:40:02,260 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:40:02,261 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:40:02,261 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-07-13 19:40:02,261 INFO L430 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:40:02,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:40:02,262 INFO L82 PathProgramCache]: Analyzing trace with hash 529800585, now seen corresponding path program 2 times [2021-07-13 19:40:02,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:40:02,262 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803516809] [2021-07-13 19:40:02,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:40:02,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:40:02,478 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-13 19:40:02,479 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:40:02,479 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803516809] [2021-07-13 19:40:02,479 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803516809] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:40:02,479 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:40:02,479 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-13 19:40:02,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654912284] [2021-07-13 19:40:02,479 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-13 19:40:02,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:40:02,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-13 19:40:02,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-07-13 19:40:02,479 INFO L87 Difference]: Start difference. First operand 430 states and 1369 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) [2021-07-13 19:40:02,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:40:02,687 INFO L93 Difference]: Finished difference Result 785 states and 2408 transitions. [2021-07-13 19:40:02,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-13 19:40:02,688 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 [2021-07-13 19:40:02,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:40:02,689 INFO L225 Difference]: With dead ends: 785 [2021-07-13 19:40:02,689 INFO L226 Difference]: Without dead ends: 737 [2021-07-13 19:40:02,689 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 262.0ms TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-07-13 19:40:02,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2021-07-13 19:40:02,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 409. [2021-07-13 19:40:02,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 408 states have (on average 3.2107843137254903) internal successors, (1310), 408 states have internal predecessors, (1310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:40:02,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 1310 transitions. [2021-07-13 19:40:02,697 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 1310 transitions. Word has length 16 [2021-07-13 19:40:02,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:40:02,697 INFO L482 AbstractCegarLoop]: Abstraction has 409 states and 1310 transitions. [2021-07-13 19:40:02,697 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) [2021-07-13 19:40:02,697 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 1310 transitions. [2021-07-13 19:40:02,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-07-13 19:40:02,698 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:40:02,698 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:40:02,698 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-07-13 19:40:02,698 INFO L430 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:40:02,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:40:02,698 INFO L82 PathProgramCache]: Analyzing trace with hash 637834109, now seen corresponding path program 3 times [2021-07-13 19:40:02,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:40:02,699 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855002959] [2021-07-13 19:40:02,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:40:02,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:40:02,836 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-13 19:40:02,836 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:40:02,837 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855002959] [2021-07-13 19:40:02,837 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855002959] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:40:02,837 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:40:02,837 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-13 19:40:02,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128641166] [2021-07-13 19:40:02,837 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-13 19:40:02,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:40:02,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-13 19:40:02,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-13 19:40:02,837 INFO L87 Difference]: Start difference. First operand 409 states and 1310 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) [2021-07-13 19:40:03,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:40:03,006 INFO L93 Difference]: Finished difference Result 646 states and 1995 transitions. [2021-07-13 19:40:03,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-13 19:40:03,007 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 [2021-07-13 19:40:03,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:40:03,008 INFO L225 Difference]: With dead ends: 646 [2021-07-13 19:40:03,008 INFO L226 Difference]: Without dead ends: 606 [2021-07-13 19:40:03,008 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 172.2ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-07-13 19:40:03,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2021-07-13 19:40:03,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 396. [2021-07-13 19:40:03,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 395 states have (on average 3.2430379746835443) internal successors, (1281), 395 states have internal predecessors, (1281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:40:03,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 1281 transitions. [2021-07-13 19:40:03,015 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 1281 transitions. Word has length 16 [2021-07-13 19:40:03,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:40:03,015 INFO L482 AbstractCegarLoop]: Abstraction has 396 states and 1281 transitions. [2021-07-13 19:40:03,015 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) [2021-07-13 19:40:03,015 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 1281 transitions. [2021-07-13 19:40:03,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-07-13 19:40:03,016 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:40:03,016 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:40:03,016 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-07-13 19:40:03,016 INFO L430 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:40:03,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:40:03,016 INFO L82 PathProgramCache]: Analyzing trace with hash 784334086, now seen corresponding path program 5 times [2021-07-13 19:40:03,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:40:03,016 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537282147] [2021-07-13 19:40:03,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:40:03,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:40:03,104 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-13 19:40:03,104 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:40:03,105 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537282147] [2021-07-13 19:40:03,105 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537282147] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:40:03,105 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:40:03,105 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-13 19:40:03,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401084202] [2021-07-13 19:40:03,105 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-13 19:40:03,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:40:03,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-13 19:40:03,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-07-13 19:40:03,105 INFO L87 Difference]: Start difference. First operand 396 states and 1281 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) [2021-07-13 19:40:03,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:40:03,305 INFO L93 Difference]: Finished difference Result 680 states and 2107 transitions. [2021-07-13 19:40:03,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-13 19:40:03,305 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 [2021-07-13 19:40:03,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:40:03,307 INFO L225 Difference]: With dead ends: 680 [2021-07-13 19:40:03,307 INFO L226 Difference]: Without dead ends: 657 [2021-07-13 19:40:03,307 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 176.6ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-07-13 19:40:03,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2021-07-13 19:40:03,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 392. [2021-07-13 19:40:03,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 3.2455242966751916) internal successors, (1269), 391 states have internal predecessors, (1269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:40:03,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 1269 transitions. [2021-07-13 19:40:03,314 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 1269 transitions. Word has length 16 [2021-07-13 19:40:03,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:40:03,314 INFO L482 AbstractCegarLoop]: Abstraction has 392 states and 1269 transitions. [2021-07-13 19:40:03,314 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) [2021-07-13 19:40:03,314 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 1269 transitions. [2021-07-13 19:40:03,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-07-13 19:40:03,315 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:40:03,315 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:40:03,315 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-07-13 19:40:03,315 INFO L430 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:40:03,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:40:03,316 INFO L82 PathProgramCache]: Analyzing trace with hash 797847013, now seen corresponding path program 5 times [2021-07-13 19:40:03,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:40:03,316 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20318573] [2021-07-13 19:40:03,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:40:03,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:40:03,495 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-13 19:40:03,495 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:40:03,495 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20318573] [2021-07-13 19:40:03,495 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20318573] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:40:03,495 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:40:03,495 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-13 19:40:03,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520193052] [2021-07-13 19:40:03,496 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-13 19:40:03,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:40:03,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-13 19:40:03,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-07-13 19:40:03,496 INFO L87 Difference]: Start difference. First operand 392 states and 1269 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) [2021-07-13 19:40:03,838 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 99 [2021-07-13 19:40:03,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:40:03,887 INFO L93 Difference]: Finished difference Result 690 states and 2128 transitions. [2021-07-13 19:40:03,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-13 19:40:03,887 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 [2021-07-13 19:40:03,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:40:03,889 INFO L225 Difference]: With dead ends: 690 [2021-07-13 19:40:03,889 INFO L226 Difference]: Without dead ends: 663 [2021-07-13 19:40:03,889 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 390.0ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-07-13 19:40:03,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2021-07-13 19:40:03,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 392. [2021-07-13 19:40:03,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 3.2404092071611252) internal successors, (1267), 391 states have internal predecessors, (1267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:40:03,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 1267 transitions. [2021-07-13 19:40:03,896 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 1267 transitions. Word has length 16 [2021-07-13 19:40:03,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:40:03,896 INFO L482 AbstractCegarLoop]: Abstraction has 392 states and 1267 transitions. [2021-07-13 19:40:03,896 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) [2021-07-13 19:40:03,896 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 1267 transitions. [2021-07-13 19:40:03,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-07-13 19:40:03,897 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:40:03,897 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:40:03,897 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-07-13 19:40:03,897 INFO L430 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:40:03,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:40:03,897 INFO L82 PathProgramCache]: Analyzing trace with hash 1214532848, now seen corresponding path program 6 times [2021-07-13 19:40:03,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:40:03,897 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901579049] [2021-07-13 19:40:03,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:40:03,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:40:03,952 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-13 19:40:03,952 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:40:03,952 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901579049] [2021-07-13 19:40:03,952 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901579049] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:40:03,952 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:40:03,952 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-13 19:40:03,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952613338] [2021-07-13 19:40:03,953 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-13 19:40:03,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:40:03,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-13 19:40:03,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-07-13 19:40:03,953 INFO L87 Difference]: Start difference. First operand 392 states and 1267 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) [2021-07-13 19:40:04,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:40:04,027 INFO L93 Difference]: Finished difference Result 595 states and 1821 transitions. [2021-07-13 19:40:04,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-13 19:40:04,027 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 [2021-07-13 19:40:04,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:40:04,029 INFO L225 Difference]: With dead ends: 595 [2021-07-13 19:40:04,029 INFO L226 Difference]: Without dead ends: 572 [2021-07-13 19:40:04,029 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 56.9ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-07-13 19:40:04,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2021-07-13 19:40:04,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 392. [2021-07-13 19:40:04,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 3.2404092071611252) internal successors, (1267), 391 states have internal predecessors, (1267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:40:04,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 1267 transitions. [2021-07-13 19:40:04,038 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 1267 transitions. Word has length 16 [2021-07-13 19:40:04,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:40:04,039 INFO L482 AbstractCegarLoop]: Abstraction has 392 states and 1267 transitions. [2021-07-13 19:40:04,039 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) [2021-07-13 19:40:04,039 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 1267 transitions. [2021-07-13 19:40:04,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-07-13 19:40:04,040 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:40:04,040 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:40:04,040 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-07-13 19:40:04,040 INFO L430 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:40:04,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:40:04,040 INFO L82 PathProgramCache]: Analyzing trace with hash 1154290151, now seen corresponding path program 6 times [2021-07-13 19:40:04,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:40:04,040 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976826287] [2021-07-13 19:40:04,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:40:04,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:40:04,375 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-13 19:40:04,375 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:40:04,375 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976826287] [2021-07-13 19:40:04,375 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976826287] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:40:04,375 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:40:04,375 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-13 19:40:04,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634606397] [2021-07-13 19:40:04,375 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-13 19:40:04,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:40:04,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-13 19:40:04,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-07-13 19:40:04,376 INFO L87 Difference]: Start difference. First operand 392 states and 1267 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) [2021-07-13 19:40:04,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:40:04,561 INFO L93 Difference]: Finished difference Result 595 states and 1811 transitions. [2021-07-13 19:40:04,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-13 19:40:04,561 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 [2021-07-13 19:40:04,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:40:04,562 INFO L225 Difference]: With dead ends: 595 [2021-07-13 19:40:04,562 INFO L226 Difference]: Without dead ends: 562 [2021-07-13 19:40:04,562 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 383.4ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-07-13 19:40:04,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2021-07-13 19:40:04,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 392. [2021-07-13 19:40:04,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 3.235294117647059) internal successors, (1265), 391 states have internal predecessors, (1265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:40:04,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 1265 transitions. [2021-07-13 19:40:04,569 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 1265 transitions. Word has length 16 [2021-07-13 19:40:04,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:40:04,570 INFO L482 AbstractCegarLoop]: Abstraction has 392 states and 1265 transitions. [2021-07-13 19:40:04,570 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) [2021-07-13 19:40:04,570 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 1265 transitions. [2021-07-13 19:40:04,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-07-13 19:40:04,570 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:40:04,570 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:40:04,571 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-07-13 19:40:04,571 INFO L430 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:40:04,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:40:04,571 INFO L82 PathProgramCache]: Analyzing trace with hash -1318202505, now seen corresponding path program 1 times [2021-07-13 19:40:04,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:40:04,571 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209824582] [2021-07-13 19:40:04,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:40:04,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:40:04,586 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-07-13 19:40:04,586 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:40:04,586 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209824582] [2021-07-13 19:40:04,586 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209824582] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:40:04,587 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:40:04,587 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-13 19:40:04,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852963064] [2021-07-13 19:40:04,587 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-13 19:40:04,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:40:04,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-13 19:40:04,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-13 19:40:04,587 INFO L87 Difference]: Start difference. First operand 392 states and 1265 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) [2021-07-13 19:40:04,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:40:04,621 INFO L93 Difference]: Finished difference Result 566 states and 1698 transitions. [2021-07-13 19:40:04,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-13 19:40:04,621 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 [2021-07-13 19:40:04,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:40:04,622 INFO L225 Difference]: With dead ends: 566 [2021-07-13 19:40:04,622 INFO L226 Difference]: Without dead ends: 566 [2021-07-13 19:40:04,622 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-13 19:40:04,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2021-07-13 19:40:04,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 420. [2021-07-13 19:40:04,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 419 states have (on average 3.252983293556086) internal successors, (1363), 419 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) [2021-07-13 19:40:04,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 1363 transitions. [2021-07-13 19:40:04,635 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 1363 transitions. Word has length 18 [2021-07-13 19:40:04,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:40:04,636 INFO L482 AbstractCegarLoop]: Abstraction has 420 states and 1363 transitions. [2021-07-13 19:40:04,636 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) [2021-07-13 19:40:04,636 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 1363 transitions. [2021-07-13 19:40:04,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-07-13 19:40:04,636 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:40:04,637 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:40:04,637 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-07-13 19:40:04,637 INFO L430 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:40:04,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:40:04,637 INFO L82 PathProgramCache]: Analyzing trace with hash -1664376435, now seen corresponding path program 2 times [2021-07-13 19:40:04,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:40:04,637 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146599637] [2021-07-13 19:40:04,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:40:04,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:40:04,661 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-07-13 19:40:04,661 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:40:04,661 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146599637] [2021-07-13 19:40:04,661 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146599637] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:40:04,661 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:40:04,661 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-13 19:40:04,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461890691] [2021-07-13 19:40:04,662 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-13 19:40:04,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:40:04,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-13 19:40:04,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-13 19:40:04,662 INFO L87 Difference]: Start difference. First operand 420 states and 1363 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) [2021-07-13 19:40:04,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:40:04,702 INFO L93 Difference]: Finished difference Result 594 states and 1770 transitions. [2021-07-13 19:40:04,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-13 19:40:04,702 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 [2021-07-13 19:40:04,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:40:04,703 INFO L225 Difference]: With dead ends: 594 [2021-07-13 19:40:04,703 INFO L226 Difference]: Without dead ends: 586 [2021-07-13 19:40:04,703 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-13 19:40:04,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2021-07-13 19:40:04,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 420. [2021-07-13 19:40:04,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 419 states have (on average 3.243436754176611) internal successors, (1359), 419 states have internal predecessors, (1359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:40:04,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 1359 transitions. [2021-07-13 19:40:04,710 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 1359 transitions. Word has length 18 [2021-07-13 19:40:04,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:40:04,711 INFO L482 AbstractCegarLoop]: Abstraction has 420 states and 1359 transitions. [2021-07-13 19:40:04,711 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) [2021-07-13 19:40:04,711 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 1359 transitions. [2021-07-13 19:40:04,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-07-13 19:40:04,712 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:40:04,712 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:40:04,712 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-07-13 19:40:04,712 INFO L430 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:40:04,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:40:04,712 INFO L82 PathProgramCache]: Analyzing trace with hash -1681246645, now seen corresponding path program 1 times [2021-07-13 19:40:04,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:40:04,712 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736653888] [2021-07-13 19:40:04,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:40:04,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:40:04,750 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-07-13 19:40:04,751 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:40:04,751 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736653888] [2021-07-13 19:40:04,751 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736653888] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:40:04,751 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:40:04,751 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-13 19:40:04,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192925723] [2021-07-13 19:40:04,752 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-13 19:40:04,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:40:04,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-13 19:40:04,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-13 19:40:04,752 INFO L87 Difference]: Start difference. First operand 420 states and 1359 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) [2021-07-13 19:40:04,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:40:04,819 INFO L93 Difference]: Finished difference Result 602 states and 1832 transitions. [2021-07-13 19:40:04,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-13 19:40:04,819 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 [2021-07-13 19:40:04,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:40:04,821 INFO L225 Difference]: With dead ends: 602 [2021-07-13 19:40:04,821 INFO L226 Difference]: Without dead ends: 602 [2021-07-13 19:40:04,822 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-13 19:40:04,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2021-07-13 19:40:04,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 457. [2021-07-13 19:40:04,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 457 states, 456 states have (on average 3.2214912280701755) internal successors, (1469), 456 states have internal predecessors, (1469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:40:04,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 1469 transitions. [2021-07-13 19:40:04,830 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 1469 transitions. Word has length 18 [2021-07-13 19:40:04,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:40:04,830 INFO L482 AbstractCegarLoop]: Abstraction has 457 states and 1469 transitions. [2021-07-13 19:40:04,831 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) [2021-07-13 19:40:04,831 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 1469 transitions. [2021-07-13 19:40:04,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-07-13 19:40:04,831 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:40:04,831 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:40:04,831 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-07-13 19:40:04,832 INFO L430 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:40:04,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:40:04,832 INFO L82 PathProgramCache]: Analyzing trace with hash -1406905333, now seen corresponding path program 2 times [2021-07-13 19:40:04,832 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:40:04,832 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572849583] [2021-07-13 19:40:04,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:40:04,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:40:04,862 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-07-13 19:40:04,862 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:40:04,863 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572849583] [2021-07-13 19:40:04,863 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572849583] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:40:04,863 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:40:04,863 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-13 19:40:04,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483406201] [2021-07-13 19:40:04,864 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-13 19:40:04,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:40:04,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-13 19:40:04,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-13 19:40:04,864 INFO L87 Difference]: Start difference. First operand 457 states and 1469 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) [2021-07-13 19:40:04,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:40:04,932 INFO L93 Difference]: Finished difference Result 590 states and 1764 transitions. [2021-07-13 19:40:04,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-13 19:40:04,933 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 [2021-07-13 19:40:04,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:40:04,934 INFO L225 Difference]: With dead ends: 590 [2021-07-13 19:40:04,934 INFO L226 Difference]: Without dead ends: 582 [2021-07-13 19:40:04,934 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-13 19:40:04,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2021-07-13 19:40:04,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 457. [2021-07-13 19:40:04,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 457 states, 456 states have (on average 3.212719298245614) internal successors, (1465), 456 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) [2021-07-13 19:40:04,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 1465 transitions. [2021-07-13 19:40:04,943 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 1465 transitions. Word has length 18 [2021-07-13 19:40:04,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:40:04,943 INFO L482 AbstractCegarLoop]: Abstraction has 457 states and 1465 transitions. [2021-07-13 19:40:04,943 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) [2021-07-13 19:40:04,943 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 1465 transitions. [2021-07-13 19:40:04,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-07-13 19:40:04,944 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:40:04,944 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:40:04,944 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-07-13 19:40:04,944 INFO L430 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:40:04,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:40:04,944 INFO L82 PathProgramCache]: Analyzing trace with hash 506049385, now seen corresponding path program 1 times [2021-07-13 19:40:04,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:40:04,944 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128901536] [2021-07-13 19:40:04,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:40:04,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:40:04,997 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-07-13 19:40:04,997 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:40:04,997 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128901536] [2021-07-13 19:40:04,997 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128901536] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:40:04,997 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:40:04,997 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-13 19:40:04,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653588004] [2021-07-13 19:40:04,998 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-13 19:40:04,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:40:04,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-13 19:40:04,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-13 19:40:04,998 INFO L87 Difference]: Start difference. First operand 457 states and 1465 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) [2021-07-13 19:40:05,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:40:05,073 INFO L93 Difference]: Finished difference Result 537 states and 1634 transitions. [2021-07-13 19:40:05,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-13 19:40:05,073 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 [2021-07-13 19:40:05,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:40:05,081 INFO L225 Difference]: With dead ends: 537 [2021-07-13 19:40:05,081 INFO L226 Difference]: Without dead ends: 525 [2021-07-13 19:40:05,081 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 65.7ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-07-13 19:40:05,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2021-07-13 19:40:05,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 453. [2021-07-13 19:40:05,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 452 states have (on average 3.2234513274336285) internal successors, (1457), 452 states have internal predecessors, (1457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:40:05,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 1457 transitions. [2021-07-13 19:40:05,089 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 1457 transitions. Word has length 18 [2021-07-13 19:40:05,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:40:05,089 INFO L482 AbstractCegarLoop]: Abstraction has 453 states and 1457 transitions. [2021-07-13 19:40:05,089 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) [2021-07-13 19:40:05,089 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 1457 transitions. [2021-07-13 19:40:05,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-07-13 19:40:05,090 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:40:05,090 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:40:05,090 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-07-13 19:40:05,090 INFO L430 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:40:05,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:40:05,090 INFO L82 PathProgramCache]: Analyzing trace with hash -1415879781, now seen corresponding path program 3 times [2021-07-13 19:40:05,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:40:05,090 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728583429] [2021-07-13 19:40:05,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:40:05,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:40:05,106 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-07-13 19:40:05,106 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:40:05,107 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728583429] [2021-07-13 19:40:05,107 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728583429] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:40:05,107 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:40:05,107 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-13 19:40:05,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925250545] [2021-07-13 19:40:05,107 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-13 19:40:05,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:40:05,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-13 19:40:05,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-13 19:40:05,107 INFO L87 Difference]: Start difference. First operand 453 states and 1457 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) [2021-07-13 19:40:05,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:40:05,139 INFO L93 Difference]: Finished difference Result 549 states and 1641 transitions. [2021-07-13 19:40:05,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-13 19:40:05,140 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 [2021-07-13 19:40:05,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:40:05,141 INFO L225 Difference]: With dead ends: 549 [2021-07-13 19:40:05,141 INFO L226 Difference]: Without dead ends: 549 [2021-07-13 19:40:05,141 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-13 19:40:05,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2021-07-13 19:40:05,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 396. [2021-07-13 19:40:05,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 395 states have (on average 3.1544303797468354) internal successors, (1246), 395 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:40:05,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 1246 transitions. [2021-07-13 19:40:05,147 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 1246 transitions. Word has length 18 [2021-07-13 19:40:05,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:40:05,147 INFO L482 AbstractCegarLoop]: Abstraction has 396 states and 1246 transitions. [2021-07-13 19:40:05,147 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) [2021-07-13 19:40:05,147 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 1246 transitions. [2021-07-13 19:40:05,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-07-13 19:40:05,148 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:40:05,148 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:40:05,148 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-07-13 19:40:05,148 INFO L430 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:40:05,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:40:05,149 INFO L82 PathProgramCache]: Analyzing trace with hash 1243069021, now seen corresponding path program 1 times [2021-07-13 19:40:05,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:40:05,149 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45152895] [2021-07-13 19:40:05,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:40:05,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:40:05,170 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-07-13 19:40:05,170 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:40:05,170 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45152895] [2021-07-13 19:40:05,170 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45152895] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:40:05,170 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:40:05,170 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-13 19:40:05,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063890718] [2021-07-13 19:40:05,170 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-13 19:40:05,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:40:05,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-13 19:40:05,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-13 19:40:05,171 INFO L87 Difference]: Start difference. First operand 396 states and 1246 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) [2021-07-13 19:40:05,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:40:05,201 INFO L93 Difference]: Finished difference Result 442 states and 1323 transitions. [2021-07-13 19:40:05,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-13 19:40:05,201 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 [2021-07-13 19:40:05,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:40:05,202 INFO L225 Difference]: With dead ends: 442 [2021-07-13 19:40:05,202 INFO L226 Difference]: Without dead ends: 413 [2021-07-13 19:40:05,202 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-13 19:40:05,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2021-07-13 19:40:05,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 396. [2021-07-13 19:40:05,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 395 states have (on average 3.118987341772152) internal successors, (1232), 395 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:40:05,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 1232 transitions. [2021-07-13 19:40:05,207 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 1232 transitions. Word has length 18 [2021-07-13 19:40:05,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:40:05,207 INFO L482 AbstractCegarLoop]: Abstraction has 396 states and 1232 transitions. [2021-07-13 19:40:05,208 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) [2021-07-13 19:40:05,208 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 1232 transitions. [2021-07-13 19:40:05,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-07-13 19:40:05,208 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:40:05,208 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:40:05,208 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-07-13 19:40:05,209 INFO L430 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:40:05,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:40:05,209 INFO L82 PathProgramCache]: Analyzing trace with hash -1059721977, now seen corresponding path program 3 times [2021-07-13 19:40:05,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:40:05,209 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916121387] [2021-07-13 19:40:05,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:40:05,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:40:05,244 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-07-13 19:40:05,244 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:40:05,244 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916121387] [2021-07-13 19:40:05,244 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916121387] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:40:05,244 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:40:05,245 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-13 19:40:05,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008801212] [2021-07-13 19:40:05,245 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-13 19:40:05,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:40:05,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-13 19:40:05,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-13 19:40:05,246 INFO L87 Difference]: Start difference. First operand 396 states and 1232 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) [2021-07-13 19:40:05,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:40:05,309 INFO L93 Difference]: Finished difference Result 482 states and 1411 transitions. [2021-07-13 19:40:05,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-13 19:40:05,309 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 [2021-07-13 19:40:05,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:40:05,310 INFO L225 Difference]: With dead ends: 482 [2021-07-13 19:40:05,310 INFO L226 Difference]: Without dead ends: 482 [2021-07-13 19:40:05,310 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-13 19:40:05,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2021-07-13 19:40:05,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 359. [2021-07-13 19:40:05,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 358 states have (on average 3.0754189944134076) internal successors, (1101), 358 states have internal predecessors, (1101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:40:05,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 1101 transitions. [2021-07-13 19:40:05,316 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 1101 transitions. Word has length 18 [2021-07-13 19:40:05,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:40:05,316 INFO L482 AbstractCegarLoop]: Abstraction has 359 states and 1101 transitions. [2021-07-13 19:40:05,316 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) [2021-07-13 19:40:05,316 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 1101 transitions. [2021-07-13 19:40:05,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-07-13 19:40:05,317 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:40:05,317 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:40:05,317 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-07-13 19:40:05,317 INFO L430 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:40:05,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:40:05,317 INFO L82 PathProgramCache]: Analyzing trace with hash -197121861, now seen corresponding path program 2 times [2021-07-13 19:40:05,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:40:05,317 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028247173] [2021-07-13 19:40:05,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:40:05,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:40:05,370 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-07-13 19:40:05,370 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:40:05,370 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028247173] [2021-07-13 19:40:05,370 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028247173] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:40:05,370 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:40:05,370 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-13 19:40:05,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362920808] [2021-07-13 19:40:05,370 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-13 19:40:05,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:40:05,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-13 19:40:05,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-13 19:40:05,371 INFO L87 Difference]: Start difference. First operand 359 states and 1101 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) [2021-07-13 19:40:05,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:40:05,426 INFO L93 Difference]: Finished difference Result 467 states and 1366 transitions. [2021-07-13 19:40:05,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-13 19:40:05,426 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 [2021-07-13 19:40:05,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:40:05,427 INFO L225 Difference]: With dead ends: 467 [2021-07-13 19:40:05,427 INFO L226 Difference]: Without dead ends: 467 [2021-07-13 19:40:05,427 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 39.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-13 19:40:05,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2021-07-13 19:40:05,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 379. [2021-07-13 19:40:05,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 378 states have (on average 3.0714285714285716) internal successors, (1161), 378 states have internal predecessors, (1161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:40:05,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 1161 transitions. [2021-07-13 19:40:05,433 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 1161 transitions. Word has length 18 [2021-07-13 19:40:05,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:40:05,434 INFO L482 AbstractCegarLoop]: Abstraction has 379 states and 1161 transitions. [2021-07-13 19:40:05,434 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) [2021-07-13 19:40:05,434 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 1161 transitions. [2021-07-13 19:40:05,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-07-13 19:40:05,435 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:40:05,435 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:40:05,435 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-07-13 19:40:05,435 INFO L430 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:40:05,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:40:05,435 INFO L82 PathProgramCache]: Analyzing trace with hash -1939653789, now seen corresponding path program 3 times [2021-07-13 19:40:05,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:40:05,436 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775495219] [2021-07-13 19:40:05,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:40:05,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:40:05,465 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-07-13 19:40:05,465 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:40:05,465 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775495219] [2021-07-13 19:40:05,465 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775495219] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:40:05,465 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:40:05,465 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-13 19:40:05,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982710755] [2021-07-13 19:40:05,465 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-13 19:40:05,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:40:05,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-13 19:40:05,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-13 19:40:05,466 INFO L87 Difference]: Start difference. First operand 379 states and 1161 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) [2021-07-13 19:40:05,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:40:05,521 INFO L93 Difference]: Finished difference Result 504 states and 1436 transitions. [2021-07-13 19:40:05,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-13 19:40:05,521 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 [2021-07-13 19:40:05,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:40:05,522 INFO L225 Difference]: With dead ends: 504 [2021-07-13 19:40:05,522 INFO L226 Difference]: Without dead ends: 496 [2021-07-13 19:40:05,522 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 33.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-13 19:40:05,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2021-07-13 19:40:05,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 379. [2021-07-13 19:40:05,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 378 states have (on average 3.060846560846561) internal successors, (1157), 378 states have internal predecessors, (1157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:40:05,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 1157 transitions. [2021-07-13 19:40:05,528 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 1157 transitions. Word has length 18 [2021-07-13 19:40:05,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:40:05,528 INFO L482 AbstractCegarLoop]: Abstraction has 379 states and 1157 transitions. [2021-07-13 19:40:05,528 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) [2021-07-13 19:40:05,528 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 1157 transitions. [2021-07-13 19:40:05,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-07-13 19:40:05,529 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:40:05,529 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:40:05,529 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-07-13 19:40:05,529 INFO L430 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:40:05,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:40:05,529 INFO L82 PathProgramCache]: Analyzing trace with hash -1583210651, now seen corresponding path program 4 times [2021-07-13 19:40:05,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:40:05,529 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388292799] [2021-07-13 19:40:05,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:40:05,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:40:05,583 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-07-13 19:40:05,584 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:40:05,584 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388292799] [2021-07-13 19:40:05,584 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388292799] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:40:05,584 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:40:05,584 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-13 19:40:05,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218190924] [2021-07-13 19:40:05,584 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-13 19:40:05,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:40:05,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-13 19:40:05,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-13 19:40:05,584 INFO L87 Difference]: Start difference. First operand 379 states and 1157 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) [2021-07-13 19:40:05,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:40:05,629 INFO L93 Difference]: Finished difference Result 441 states and 1293 transitions. [2021-07-13 19:40:05,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-13 19:40:05,630 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 [2021-07-13 19:40:05,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:40:05,630 INFO L225 Difference]: With dead ends: 441 [2021-07-13 19:40:05,630 INFO L226 Difference]: Without dead ends: 441 [2021-07-13 19:40:05,631 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 40.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-13 19:40:05,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2021-07-13 19:40:05,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 359. [2021-07-13 19:40:05,635 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) [2021-07-13 19:40:05,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 1077 transitions. [2021-07-13 19:40:05,635 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 1077 transitions. Word has length 18 [2021-07-13 19:40:05,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:40:05,635 INFO L482 AbstractCegarLoop]: Abstraction has 359 states and 1077 transitions. [2021-07-13 19:40:05,635 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) [2021-07-13 19:40:05,636 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 1077 transitions. [2021-07-13 19:40:05,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-07-13 19:40:05,636 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:40:05,636 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:40:05,636 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-07-13 19:40:05,636 INFO L430 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:40:05,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:40:05,637 INFO L82 PathProgramCache]: Analyzing trace with hash 2015137509, now seen corresponding path program 4 times [2021-07-13 19:40:05,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:40:05,637 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430370871] [2021-07-13 19:40:05,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:40:05,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:40:05,660 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-07-13 19:40:05,660 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:40:05,660 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430370871] [2021-07-13 19:40:05,660 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430370871] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:40:05,660 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:40:05,660 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-13 19:40:05,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936572663] [2021-07-13 19:40:05,660 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-13 19:40:05,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:40:05,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-13 19:40:05,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-13 19:40:05,661 INFO L87 Difference]: Start difference. First operand 359 states and 1077 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) [2021-07-13 19:40:05,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:40:05,683 INFO L93 Difference]: Finished difference Result 439 states and 1246 transitions. [2021-07-13 19:40:05,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-13 19:40:05,683 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 [2021-07-13 19:40:05,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:40:05,684 INFO L225 Difference]: With dead ends: 439 [2021-07-13 19:40:05,684 INFO L226 Difference]: Without dead ends: 431 [2021-07-13 19:40:05,684 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 11.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-13 19:40:05,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2021-07-13 19:40:05,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 359. [2021-07-13 19:40:05,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 358 states have (on average 3.0027932960893855) internal successors, (1075), 358 states have internal predecessors, (1075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:40:05,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 1075 transitions. [2021-07-13 19:40:05,689 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 1075 transitions. Word has length 18 [2021-07-13 19:40:05,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:40:05,689 INFO L482 AbstractCegarLoop]: Abstraction has 359 states and 1075 transitions. [2021-07-13 19:40:05,689 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) [2021-07-13 19:40:05,690 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 1075 transitions. [2021-07-13 19:40:05,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-07-13 19:40:05,690 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:40:05,690 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:40:05,690 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-07-13 19:40:05,690 INFO L430 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:40:05,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:40:05,690 INFO L82 PathProgramCache]: Analyzing trace with hash 325544227, now seen corresponding path program 4 times [2021-07-13 19:40:05,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:40:05,691 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631836552] [2021-07-13 19:40:05,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:40:05,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:40:05,746 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-07-13 19:40:05,747 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:40:05,747 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631836552] [2021-07-13 19:40:05,747 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631836552] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:40:05,747 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:40:05,747 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-13 19:40:05,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745759498] [2021-07-13 19:40:05,747 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-13 19:40:05,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:40:05,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-13 19:40:05,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-13 19:40:05,747 INFO L87 Difference]: Start difference. First operand 359 states and 1075 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) [2021-07-13 19:40:05,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:40:05,816 INFO L93 Difference]: Finished difference Result 384 states and 1113 transitions. [2021-07-13 19:40:05,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-13 19:40:05,816 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 [2021-07-13 19:40:05,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:40:05,817 INFO L225 Difference]: With dead ends: 384 [2021-07-13 19:40:05,817 INFO L226 Difference]: Without dead ends: 376 [2021-07-13 19:40:05,817 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 67.7ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-07-13 19:40:05,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2021-07-13 19:40:05,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 359. [2021-07-13 19:40:05,821 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) [2021-07-13 19:40:05,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 1073 transitions. [2021-07-13 19:40:05,822 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 1073 transitions. Word has length 18 [2021-07-13 19:40:05,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:40:05,822 INFO L482 AbstractCegarLoop]: Abstraction has 359 states and 1073 transitions. [2021-07-13 19:40:05,822 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) [2021-07-13 19:40:05,822 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 1073 transitions. [2021-07-13 19:40:05,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-07-13 19:40:05,823 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:40:05,823 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:40:05,823 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-07-13 19:40:05,823 INFO L430 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:40:05,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:40:05,823 INFO L82 PathProgramCache]: Analyzing trace with hash 724624817, now seen corresponding path program 5 times [2021-07-13 19:40:05,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:40:05,823 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571739490] [2021-07-13 19:40:05,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:40:05,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:40:05,837 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-07-13 19:40:05,838 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:40:05,838 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571739490] [2021-07-13 19:40:05,838 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571739490] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:40:05,838 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:40:05,838 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-13 19:40:05,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891097285] [2021-07-13 19:40:05,838 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-13 19:40:05,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:40:05,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-13 19:40:05,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-13 19:40:05,838 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) [2021-07-13 19:40:05,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:40:05,863 INFO L93 Difference]: Finished difference Result 386 states and 1114 transitions. [2021-07-13 19:40:05,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-13 19:40:05,864 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 [2021-07-13 19:40:05,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:40:05,868 INFO L225 Difference]: With dead ends: 386 [2021-07-13 19:40:05,868 INFO L226 Difference]: Without dead ends: 374 [2021-07-13 19:40:05,869 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-13 19:40:05,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2021-07-13 19:40:05,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 357. [2021-07-13 19:40:05,873 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) [2021-07-13 19:40:05,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 1069 transitions. [2021-07-13 19:40:05,874 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 1069 transitions. Word has length 18 [2021-07-13 19:40:05,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:40:05,874 INFO L482 AbstractCegarLoop]: Abstraction has 357 states and 1069 transitions. [2021-07-13 19:40:05,874 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) [2021-07-13 19:40:05,874 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 1069 transitions. [2021-07-13 19:40:05,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-07-13 19:40:05,875 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:40:05,875 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:40:05,875 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-07-13 19:40:05,875 INFO L430 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:40:05,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:40:05,876 INFO L82 PathProgramCache]: Analyzing trace with hash -280993702, now seen corresponding path program 1 times [2021-07-13 19:40:05,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:40:05,876 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834020302] [2021-07-13 19:40:05,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:40:05,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:40:06,323 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:40:06,323 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:40:06,323 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834020302] [2021-07-13 19:40:06,323 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834020302] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 19:40:06,323 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1649932771] [2021-07-13 19:40:06,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2021-07-13 19:40:06,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:40:06,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 31 conjunts are in the unsatisfiable core [2021-07-13 19:40:06,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 19:40:07,265 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:40:07,265 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1649932771] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 19:40:07,265 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 19:40:07,265 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-07-13 19:40:07,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203470599] [2021-07-13 19:40:07,266 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:40:07,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:40:07,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:40:07,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:40:07,267 INFO L87 Difference]: Start difference. First operand 357 states and 1069 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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) [2021-07-13 19:40:07,831 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 48 [2021-07-13 19:40:08,029 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 62 [2021-07-13 19:40:08,242 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 71 [2021-07-13 19:40:08,525 WARN L205 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 66 [2021-07-13 19:40:08,676 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-07-13 19:40:08,994 WARN L205 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 64 [2021-07-13 19:40:09,136 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 56 [2021-07-13 19:40:09,288 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 43 [2021-07-13 19:40:09,482 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 61 [2021-07-13 19:40:09,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:40:09,521 INFO L93 Difference]: Finished difference Result 577 states and 1690 transitions. [2021-07-13 19:40:09,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-07-13 19:40:09,522 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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 [2021-07-13 19:40:09,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:40:09,523 INFO L225 Difference]: With dead ends: 577 [2021-07-13 19:40:09,523 INFO L226 Difference]: Without dead ends: 562 [2021-07-13 19:40:09,523 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 2762.6ms TimeCoverageRelationStatistics Valid=195, Invalid=797, Unknown=0, NotChecked=0, Total=992 [2021-07-13 19:40:09,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2021-07-13 19:40:09,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 376. [2021-07-13 19:40:09,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 375 states have (on average 2.984) internal successors, (1119), 375 states have internal predecessors, (1119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:40:09,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 1119 transitions. [2021-07-13 19:40:09,530 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 1119 transitions. Word has length 20 [2021-07-13 19:40:09,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:40:09,530 INFO L482 AbstractCegarLoop]: Abstraction has 376 states and 1119 transitions. [2021-07-13 19:40:09,531 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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) [2021-07-13 19:40:09,531 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 1119 transitions. [2021-07-13 19:40:09,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-07-13 19:40:09,531 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:40:09,532 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:40:09,745 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-07-13 19:40:09,745 INFO L430 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:40:09,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:40:09,745 INFO L82 PathProgramCache]: Analyzing trace with hash 2131599896, now seen corresponding path program 2 times [2021-07-13 19:40:09,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:40:09,745 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800058403] [2021-07-13 19:40:09,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:40:09,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:40:10,065 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2021-07-13 19:40:10,136 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:40:10,136 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:40:10,137 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800058403] [2021-07-13 19:40:10,137 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800058403] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 19:40:10,137 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [616385711] [2021-07-13 19:40:10,137 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 [2021-07-13 19:40:10,186 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-13 19:40:10,186 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 19:40:10,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 29 conjunts are in the unsatisfiable core [2021-07-13 19:40:10,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 19:40:10,650 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 51 [2021-07-13 19:40:10,860 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:40:10,860 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [616385711] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 19:40:10,860 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 19:40:10,860 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-07-13 19:40:10,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038603763] [2021-07-13 19:40:10,861 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-07-13 19:40:10,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:40:10,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-07-13 19:40:10,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2021-07-13 19:40:10,861 INFO L87 Difference]: Start difference. First operand 376 states and 1119 transitions. Second operand has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 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) [2021-07-13 19:40:11,423 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 65 [2021-07-13 19:40:11,616 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 59 [2021-07-13 19:40:12,157 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2021-07-13 19:40:12,445 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 61 [2021-07-13 19:40:12,756 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 70 [2021-07-13 19:40:12,909 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2021-07-13 19:40:13,145 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 65 [2021-07-13 19:40:13,278 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 58 [2021-07-13 19:40:13,517 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2021-07-13 19:40:13,668 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56 [2021-07-13 19:40:13,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:40:13,742 INFO L93 Difference]: Finished difference Result 661 states and 1936 transitions. [2021-07-13 19:40:13,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-07-13 19:40:13,743 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 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 [2021-07-13 19:40:13,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:40:13,744 INFO L225 Difference]: With dead ends: 661 [2021-07-13 19:40:13,744 INFO L226 Difference]: Without dead ends: 646 [2021-07-13 19:40:13,744 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 3099.3ms TimeCoverageRelationStatistics Valid=324, Invalid=1236, Unknown=0, NotChecked=0, Total=1560 [2021-07-13 19:40:13,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2021-07-13 19:40:13,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 393. [2021-07-13 19:40:13,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 3.0280612244897958) internal successors, (1187), 392 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) [2021-07-13 19:40:13,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 1187 transitions. [2021-07-13 19:40:13,751 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 1187 transitions. Word has length 20 [2021-07-13 19:40:13,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:40:13,751 INFO L482 AbstractCegarLoop]: Abstraction has 393 states and 1187 transitions. [2021-07-13 19:40:13,751 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 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) [2021-07-13 19:40:13,751 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 1187 transitions. [2021-07-13 19:40:13,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-07-13 19:40:13,752 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:40:13,752 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:40:13,956 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 19:40:13,957 INFO L430 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:40:13,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:40:13,957 INFO L82 PathProgramCache]: Analyzing trace with hash 695728536, now seen corresponding path program 3 times [2021-07-13 19:40:13,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:40:13,957 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653276288] [2021-07-13 19:40:13,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:40:13,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:40:14,203 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:40:14,203 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:40:14,203 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653276288] [2021-07-13 19:40:14,203 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653276288] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 19:40:14,203 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1921459317] [2021-07-13 19:40:14,203 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 [2021-07-13 19:40:14,239 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-07-13 19:40:14,239 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 19:40:14,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 29 conjunts are in the unsatisfiable core [2021-07-13 19:40:14,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 19:40:14,844 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:40:14,844 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1921459317] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 19:40:14,844 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 19:40:14,844 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-07-13 19:40:14,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619923289] [2021-07-13 19:40:14,844 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:40:14,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:40:14,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:40:14,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:40:14,845 INFO L87 Difference]: Start difference. First operand 393 states and 1187 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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) [2021-07-13 19:40:15,529 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2021-07-13 19:40:15,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:40:15,558 INFO L93 Difference]: Finished difference Result 616 states and 1834 transitions. [2021-07-13 19:40:15,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-07-13 19:40:15,559 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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 [2021-07-13 19:40:15,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:40:15,560 INFO L225 Difference]: With dead ends: 616 [2021-07-13 19:40:15,560 INFO L226 Difference]: Without dead ends: 601 [2021-07-13 19:40:15,560 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 1068.4ms TimeCoverageRelationStatistics Valid=142, Invalid=508, Unknown=0, NotChecked=0, Total=650 [2021-07-13 19:40:15,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2021-07-13 19:40:15,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 402. [2021-07-13 19:40:15,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 401 states have (on average 3.027431421446384) internal successors, (1214), 401 states have internal predecessors, (1214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:40:15,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 1214 transitions. [2021-07-13 19:40:15,567 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 1214 transitions. Word has length 20 [2021-07-13 19:40:15,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:40:15,567 INFO L482 AbstractCegarLoop]: Abstraction has 402 states and 1214 transitions. [2021-07-13 19:40:15,567 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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) [2021-07-13 19:40:15,567 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 1214 transitions. [2021-07-13 19:40:15,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-07-13 19:40:15,568 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:40:15,568 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:40:15,780 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 19:40:15,781 INFO L430 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:40:15,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:40:15,781 INFO L82 PathProgramCache]: Analyzing trace with hash -2000569288, now seen corresponding path program 4 times [2021-07-13 19:40:15,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:40:15,781 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231710914] [2021-07-13 19:40:15,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:40:15,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:40:15,991 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:40:15,991 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:40:15,991 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231710914] [2021-07-13 19:40:15,991 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231710914] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 19:40:15,991 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276019186] [2021-07-13 19:40:15,992 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 [2021-07-13 19:40:16,042 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-07-13 19:40:16,043 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 19:40:16,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 29 conjunts are in the unsatisfiable core [2021-07-13 19:40:16,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 19:40:16,623 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:40:16,623 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1276019186] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 19:40:16,623 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 19:40:16,623 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-07-13 19:40:16,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103709914] [2021-07-13 19:40:16,624 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:40:16,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:40:16,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:40:16,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:40:16,624 INFO L87 Difference]: Start difference. First operand 402 states and 1214 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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) [2021-07-13 19:40:16,926 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2021-07-13 19:40:17,210 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2021-07-13 19:40:17,374 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2021-07-13 19:40:17,663 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2021-07-13 19:40:17,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:40:17,691 INFO L93 Difference]: Finished difference Result 652 states and 1931 transitions. [2021-07-13 19:40:17,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-07-13 19:40:17,692 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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 [2021-07-13 19:40:17,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:40:17,693 INFO L225 Difference]: With dead ends: 652 [2021-07-13 19:40:17,693 INFO L226 Difference]: Without dead ends: 637 [2021-07-13 19:40:17,693 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 1367.6ms TimeCoverageRelationStatistics Valid=216, Invalid=714, Unknown=0, NotChecked=0, Total=930 [2021-07-13 19:40:17,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2021-07-13 19:40:17,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 402. [2021-07-13 19:40:17,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 401 states have (on average 3.027431421446384) internal successors, (1214), 401 states have internal predecessors, (1214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:40:17,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 1214 transitions. [2021-07-13 19:40:17,699 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 1214 transitions. Word has length 20 [2021-07-13 19:40:17,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:40:17,700 INFO L482 AbstractCegarLoop]: Abstraction has 402 states and 1214 transitions. [2021-07-13 19:40:17,700 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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) [2021-07-13 19:40:17,700 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 1214 transitions. [2021-07-13 19:40:17,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-07-13 19:40:17,700 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:40:17,700 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:40:17,908 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 19:40:17,909 INFO L430 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:40:17,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:40:17,909 INFO L82 PathProgramCache]: Analyzing trace with hash -616411988, now seen corresponding path program 5 times [2021-07-13 19:40:17,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:40:17,909 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594473415] [2021-07-13 19:40:17,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:40:17,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:40:18,338 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:40:18,338 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:40:18,339 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594473415] [2021-07-13 19:40:18,339 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594473415] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 19:40:18,339 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992223311] [2021-07-13 19:40:18,339 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 [2021-07-13 19:40:18,379 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-13 19:40:18,379 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 19:40:18,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 29 conjunts are in the unsatisfiable core [2021-07-13 19:40:18,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 19:40:18,980 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:40:18,980 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [992223311] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 19:40:18,980 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 19:40:18,980 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-07-13 19:40:18,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537514847] [2021-07-13 19:40:18,980 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-07-13 19:40:18,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:40:18,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-07-13 19:40:18,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2021-07-13 19:40:18,981 INFO L87 Difference]: Start difference. First operand 402 states and 1214 transitions. Second operand has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 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) [2021-07-13 19:40:19,141 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 38 [2021-07-13 19:40:19,478 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2021-07-13 19:40:19,735 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 57 [2021-07-13 19:40:19,879 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 49 [2021-07-13 19:40:20,273 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 43 [2021-07-13 19:40:20,509 WARN L205 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-07-13 19:40:20,716 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2021-07-13 19:40:20,964 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 64 [2021-07-13 19:40:21,103 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 55 [2021-07-13 19:40:21,335 WARN L205 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 67 [2021-07-13 19:40:21,600 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 66 [2021-07-13 19:40:21,793 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 59 [2021-07-13 19:40:22,127 WARN L205 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 82 [2021-07-13 19:40:22,365 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 75 [2021-07-13 19:40:22,712 WARN L205 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 80 [2021-07-13 19:40:22,940 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 73 [2021-07-13 19:40:22,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:40:22,991 INFO L93 Difference]: Finished difference Result 727 states and 2144 transitions. [2021-07-13 19:40:22,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-07-13 19:40:22,991 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 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 [2021-07-13 19:40:22,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:40:22,993 INFO L225 Difference]: With dead ends: 727 [2021-07-13 19:40:22,993 INFO L226 Difference]: Without dead ends: 712 [2021-07-13 19:40:22,993 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 4243.2ms TimeCoverageRelationStatistics Valid=339, Invalid=1383, Unknown=0, NotChecked=0, Total=1722 [2021-07-13 19:40:22,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2021-07-13 19:40:22,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 411. [2021-07-13 19:40:22,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 410 states have (on average 3.026829268292683) internal successors, (1241), 410 states have internal predecessors, (1241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:40:22,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 1241 transitions. [2021-07-13 19:40:22,999 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 1241 transitions. Word has length 20 [2021-07-13 19:40:23,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:40:23,000 INFO L482 AbstractCegarLoop]: Abstraction has 411 states and 1241 transitions. [2021-07-13 19:40:23,000 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 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) [2021-07-13 19:40:23,000 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 1241 transitions. [2021-07-13 19:40:23,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-07-13 19:40:23,000 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:40:23,000 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:40:23,221 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 19:40:23,221 INFO L430 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:40:23,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:40:23,221 INFO L82 PathProgramCache]: Analyzing trace with hash -2111156678, now seen corresponding path program 6 times [2021-07-13 19:40:23,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:40:23,221 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669419745] [2021-07-13 19:40:23,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:40:23,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:40:23,498 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:40:23,498 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:40:23,498 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669419745] [2021-07-13 19:40:23,498 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669419745] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 19:40:23,499 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608874542] [2021-07-13 19:40:23,499 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 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 [2021-07-13 19:40:23,530 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-07-13 19:40:23,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 19:40:23,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 29 conjunts are in the unsatisfiable core [2021-07-13 19:40:23,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 19:40:23,965 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2021-07-13 19:40:24,178 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:40:24,178 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608874542] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 19:40:24,178 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 19:40:24,178 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-07-13 19:40:24,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009170997] [2021-07-13 19:40:24,178 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-07-13 19:40:24,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:40:24,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-07-13 19:40:24,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2021-07-13 19:40:24,179 INFO L87 Difference]: Start difference. First operand 411 states and 1241 transitions. Second operand has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 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) [2021-07-13 19:40:24,894 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2021-07-13 19:40:25,139 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 53 [2021-07-13 19:40:25,301 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-07-13 19:40:25,438 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 58 [2021-07-13 19:40:25,623 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 61 [2021-07-13 19:40:25,925 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 57 [2021-07-13 19:40:26,117 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 74 [2021-07-13 19:40:26,445 WARN L205 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 77 [2021-07-13 19:40:26,624 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 69 [2021-07-13 19:40:26,894 WARN L205 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-07-13 19:40:27,331 WARN L205 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 73 [2021-07-13 19:40:27,603 WARN L205 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 66 [2021-07-13 19:40:27,763 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2021-07-13 19:40:27,892 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 55 [2021-07-13 19:40:27,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:40:27,940 INFO L93 Difference]: Finished difference Result 672 states and 1985 transitions. [2021-07-13 19:40:27,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-07-13 19:40:27,940 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 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 [2021-07-13 19:40:27,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:40:27,942 INFO L225 Difference]: With dead ends: 672 [2021-07-13 19:40:27,942 INFO L226 Difference]: Without dead ends: 657 [2021-07-13 19:40:27,942 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 364 ImplicationChecksByTransitivity, 3910.7ms TimeCoverageRelationStatistics Valid=316, Invalid=1490, Unknown=0, NotChecked=0, Total=1806 [2021-07-13 19:40:27,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2021-07-13 19:40:27,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 426. [2021-07-13 19:40:27,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 425 states have (on average 3.0376470588235294) internal successors, (1291), 425 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:40:27,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 1291 transitions. [2021-07-13 19:40:27,951 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 1291 transitions. Word has length 20 [2021-07-13 19:40:27,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:40:27,951 INFO L482 AbstractCegarLoop]: Abstraction has 426 states and 1291 transitions. [2021-07-13 19:40:27,951 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 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) [2021-07-13 19:40:27,951 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 1291 transitions. [2021-07-13 19:40:27,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-07-13 19:40:27,952 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:40:27,952 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:40:28,167 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 19:40:28,168 INFO L430 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:40:28,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:40:28,168 INFO L82 PathProgramCache]: Analyzing trace with hash 301436920, now seen corresponding path program 7 times [2021-07-13 19:40:28,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:40:28,168 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177694735] [2021-07-13 19:40:28,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:40:28,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:40:28,633 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:40:28,633 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:40:28,633 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177694735] [2021-07-13 19:40:28,633 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177694735] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 19:40:28,633 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953833266] [2021-07-13 19:40:28,633 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 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 [2021-07-13 19:40:28,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:40:28,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 33 conjunts are in the unsatisfiable core [2021-07-13 19:40:28,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 19:40:29,344 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:40:29,345 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [953833266] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 19:40:29,345 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 19:40:29,345 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-07-13 19:40:29,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186200711] [2021-07-13 19:40:29,345 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:40:29,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:40:29,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:40:29,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:40:29,345 INFO L87 Difference]: Start difference. First operand 426 states and 1291 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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) [2021-07-13 19:40:29,851 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-07-13 19:40:30,272 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2021-07-13 19:40:30,468 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 66 [2021-07-13 19:40:30,755 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 66 [2021-07-13 19:40:30,935 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 63 [2021-07-13 19:40:30,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:40:30,949 INFO L93 Difference]: Finished difference Result 669 states and 1939 transitions. [2021-07-13 19:40:30,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-13 19:40:30,950 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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 [2021-07-13 19:40:30,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:40:30,951 INFO L225 Difference]: With dead ends: 669 [2021-07-13 19:40:30,951 INFO L226 Difference]: Without dead ends: 639 [2021-07-13 19:40:30,951 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 2219.6ms TimeCoverageRelationStatistics Valid=189, Invalid=741, Unknown=0, NotChecked=0, Total=930 [2021-07-13 19:40:30,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2021-07-13 19:40:30,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 432. [2021-07-13 19:40:30,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 431 states have (on average 3.0301624129930396) internal successors, (1306), 431 states have internal predecessors, (1306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:40:30,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 1306 transitions. [2021-07-13 19:40:30,967 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 1306 transitions. Word has length 20 [2021-07-13 19:40:30,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:40:30,967 INFO L482 AbstractCegarLoop]: Abstraction has 432 states and 1306 transitions. [2021-07-13 19:40:30,968 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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) [2021-07-13 19:40:30,968 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 1306 transitions. [2021-07-13 19:40:30,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-07-13 19:40:30,968 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:40:30,968 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:40:31,184 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 19:40:31,184 INFO L430 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:40:31,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:40:31,185 INFO L82 PathProgramCache]: Analyzing trace with hash -1134434440, now seen corresponding path program 8 times [2021-07-13 19:40:31,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:40:31,185 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37508107] [2021-07-13 19:40:31,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:40:31,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:40:31,533 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:40:31,533 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:40:31,533 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37508107] [2021-07-13 19:40:31,533 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37508107] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 19:40:31,533 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998819690] [2021-07-13 19:40:31,533 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 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 [2021-07-13 19:40:31,581 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-13 19:40:31,581 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 19:40:31,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 29 conjunts are in the unsatisfiable core [2021-07-13 19:40:31,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 19:40:32,161 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:40:32,161 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998819690] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 19:40:32,161 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 19:40:32,162 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-07-13 19:40:32,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325103374] [2021-07-13 19:40:32,162 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:40:32,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:40:32,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:40:32,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:40:32,163 INFO L87 Difference]: Start difference. First operand 432 states and 1306 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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) [2021-07-13 19:40:32,497 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2021-07-13 19:40:32,703 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2021-07-13 19:40:32,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:40:32,744 INFO L93 Difference]: Finished difference Result 630 states and 1879 transitions. [2021-07-13 19:40:32,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-13 19:40:32,745 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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 [2021-07-13 19:40:32,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:40:32,746 INFO L225 Difference]: With dead ends: 630 [2021-07-13 19:40:32,746 INFO L226 Difference]: Without dead ends: 615 [2021-07-13 19:40:32,746 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1108.8ms TimeCoverageRelationStatistics Valid=139, Invalid=461, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:40:32,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2021-07-13 19:40:32,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 435. [2021-07-13 19:40:32,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 434 states have (on average 3.0368663594470044) internal successors, (1318), 434 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:40:32,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 1318 transitions. [2021-07-13 19:40:32,752 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 1318 transitions. Word has length 20 [2021-07-13 19:40:32,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:40:32,753 INFO L482 AbstractCegarLoop]: Abstraction has 435 states and 1318 transitions. [2021-07-13 19:40:32,753 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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) [2021-07-13 19:40:32,753 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 1318 transitions. [2021-07-13 19:40:32,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-07-13 19:40:32,753 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:40:32,753 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:40:32,954 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable204 [2021-07-13 19:40:32,954 INFO L430 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:40:32,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:40:32,954 INFO L82 PathProgramCache]: Analyzing trace with hash 464235032, now seen corresponding path program 9 times [2021-07-13 19:40:32,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:40:32,954 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651118220] [2021-07-13 19:40:32,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:40:32,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:40:33,244 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 35 [2021-07-13 19:40:33,378 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 39 [2021-07-13 19:40:33,610 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:40:33,610 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:40:33,611 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651118220] [2021-07-13 19:40:33,611 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651118220] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 19:40:33,611 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [134348690] [2021-07-13 19:40:33,611 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 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 [2021-07-13 19:40:33,643 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-07-13 19:40:33,643 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 19:40:33,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 29 conjunts are in the unsatisfiable core [2021-07-13 19:40:33,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 19:40:34,263 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:40:34,263 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [134348690] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 19:40:34,263 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 19:40:34,263 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-07-13 19:40:34,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676265783] [2021-07-13 19:40:34,264 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-07-13 19:40:34,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:40:34,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-07-13 19:40:34,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2021-07-13 19:40:34,264 INFO L87 Difference]: Start difference. First operand 435 states and 1318 transitions. Second operand has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 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) [2021-07-13 19:40:35,119 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-07-13 19:40:35,371 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 63 [2021-07-13 19:40:35,528 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 61 [2021-07-13 19:40:35,674 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 65 [2021-07-13 19:40:35,828 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-07-13 19:40:36,007 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 54 [2021-07-13 19:40:36,221 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 61 [2021-07-13 19:40:36,408 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 65 [2021-07-13 19:40:36,563 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 61 [2021-07-13 19:40:36,730 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 63 [2021-07-13 19:40:36,878 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 59 [2021-07-13 19:40:36,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:40:36,925 INFO L93 Difference]: Finished difference Result 661 states and 1963 transitions. [2021-07-13 19:40:36,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-07-13 19:40:36,925 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 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 [2021-07-13 19:40:36,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:40:36,926 INFO L225 Difference]: With dead ends: 661 [2021-07-13 19:40:36,926 INFO L226 Difference]: Without dead ends: 646 [2021-07-13 19:40:36,927 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 3279.0ms TimeCoverageRelationStatistics Valid=331, Invalid=1075, Unknown=0, NotChecked=0, Total=1406 [2021-07-13 19:40:36,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2021-07-13 19:40:36,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 430. [2021-07-13 19:40:36,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 429 states have (on average 3.0326340326340326) internal successors, (1301), 429 states have internal predecessors, (1301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:40:36,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 1301 transitions. [2021-07-13 19:40:36,932 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 1301 transitions. Word has length 20 [2021-07-13 19:40:36,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:40:36,933 INFO L482 AbstractCegarLoop]: Abstraction has 430 states and 1301 transitions. [2021-07-13 19:40:36,933 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 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) [2021-07-13 19:40:36,933 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 1301 transitions. [2021-07-13 19:40:36,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-07-13 19:40:36,933 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:40:36,933 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:40:37,150 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 19:40:37,150 INFO L430 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:40:37,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:40:37,150 INFO L82 PathProgramCache]: Analyzing trace with hash 812620716, now seen corresponding path program 10 times [2021-07-13 19:40:37,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:40:37,151 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327874825] [2021-07-13 19:40:37,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:40:37,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:40:37,369 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:40:37,369 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:40:37,369 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327874825] [2021-07-13 19:40:37,369 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327874825] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 19:40:37,369 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143196040] [2021-07-13 19:40:37,369 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 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 [2021-07-13 19:40:37,403 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-07-13 19:40:37,403 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 19:40:37,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 31 conjunts are in the unsatisfiable core [2021-07-13 19:40:37,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 19:40:37,787 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2021-07-13 19:40:38,061 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:40:38,061 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1143196040] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 19:40:38,061 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 19:40:38,061 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-07-13 19:40:38,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654185809] [2021-07-13 19:40:38,061 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-07-13 19:40:38,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:40:38,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-07-13 19:40:38,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2021-07-13 19:40:38,062 INFO L87 Difference]: Start difference. First operand 430 states and 1301 transitions. Second operand has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 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) [2021-07-13 19:40:38,693 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2021-07-13 19:40:38,890 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 71 [2021-07-13 19:40:39,121 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 58 [2021-07-13 19:40:39,294 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 61 [2021-07-13 19:40:39,444 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2021-07-13 19:40:39,639 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2021-07-13 19:40:39,826 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2021-07-13 19:40:40,003 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 58 [2021-07-13 19:40:40,278 WARN L205 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 96 [2021-07-13 19:40:40,544 WARN L205 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 86 [2021-07-13 19:40:40,779 WARN L205 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 85 [2021-07-13 19:40:41,017 WARN L205 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 92 [2021-07-13 19:40:41,345 WARN L205 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 74 [2021-07-13 19:40:41,576 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 82 [2021-07-13 19:40:41,879 WARN L205 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 97 [2021-07-13 19:40:42,269 WARN L205 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 87 [2021-07-13 19:40:42,535 WARN L205 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 91 [2021-07-13 19:40:42,914 WARN L205 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 93 [2021-07-13 19:40:43,284 WARN L205 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 81 [2021-07-13 19:40:43,576 WARN L205 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 84 [2021-07-13 19:40:43,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:40:43,670 INFO L93 Difference]: Finished difference Result 840 states and 2464 transitions. [2021-07-13 19:40:43,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-07-13 19:40:43,671 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 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 [2021-07-13 19:40:43,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:40:43,672 INFO L225 Difference]: With dead ends: 840 [2021-07-13 19:40:43,672 INFO L226 Difference]: Without dead ends: 795 [2021-07-13 19:40:43,672 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 446 ImplicationChecksByTransitivity, 5669.3ms TimeCoverageRelationStatistics Valid=477, Invalid=1875, Unknown=0, NotChecked=0, Total=2352 [2021-07-13 19:40:43,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 795 states. [2021-07-13 19:40:43,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 795 to 475. [2021-07-13 19:40:43,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 474 states have (on average 3.0274261603375527) internal successors, (1435), 474 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:40:43,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 1435 transitions. [2021-07-13 19:40:43,679 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 1435 transitions. Word has length 20 [2021-07-13 19:40:43,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:40:43,679 INFO L482 AbstractCegarLoop]: Abstraction has 475 states and 1435 transitions. [2021-07-13 19:40:43,679 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 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) [2021-07-13 19:40:43,679 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 1435 transitions. [2021-07-13 19:40:43,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-07-13 19:40:43,680 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:40:43,680 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:40:43,889 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 19:40:43,889 INFO L430 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:40:43,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:40:43,890 INFO L82 PathProgramCache]: Analyzing trace with hash -1379795916, now seen corresponding path program 11 times [2021-07-13 19:40:43,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:40:43,890 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703684270] [2021-07-13 19:40:43,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:40:43,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:40:44,086 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:40:44,086 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:40:44,086 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703684270] [2021-07-13 19:40:44,086 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703684270] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 19:40:44,086 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586144628] [2021-07-13 19:40:44,086 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 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 [2021-07-13 19:40:44,120 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-13 19:40:44,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 19:40:44,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 29 conjunts are in the unsatisfiable core [2021-07-13 19:40:44,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 19:40:44,425 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2021-07-13 19:40:44,746 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:40:44,746 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [586144628] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 19:40:44,746 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 19:40:44,746 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-07-13 19:40:44,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455369300] [2021-07-13 19:40:44,746 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:40:44,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:40:44,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:40:44,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:40:44,747 INFO L87 Difference]: Start difference. First operand 475 states and 1435 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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) [2021-07-13 19:40:45,468 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2021-07-13 19:40:45,700 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 76 [2021-07-13 19:40:45,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:40:45,732 INFO L93 Difference]: Finished difference Result 736 states and 2173 transitions. [2021-07-13 19:40:45,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-13 19:40:45,732 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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 [2021-07-13 19:40:45,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:40:45,733 INFO L225 Difference]: With dead ends: 736 [2021-07-13 19:40:45,733 INFO L226 Difference]: Without dead ends: 721 [2021-07-13 19:40:45,733 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 1310.0ms TimeCoverageRelationStatistics Valid=131, Invalid=571, Unknown=0, NotChecked=0, Total=702 [2021-07-13 19:40:45,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2021-07-13 19:40:45,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 475. [2021-07-13 19:40:45,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 474 states have (on average 3.0274261603375527) internal successors, (1435), 474 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:40:45,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 1435 transitions. [2021-07-13 19:40:45,742 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 1435 transitions. Word has length 20 [2021-07-13 19:40:45,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:40:45,742 INFO L482 AbstractCegarLoop]: Abstraction has 475 states and 1435 transitions. [2021-07-13 19:40:45,742 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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) [2021-07-13 19:40:45,742 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 1435 transitions. [2021-07-13 19:40:45,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-07-13 19:40:45,742 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:40:45,742 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:40:45,943 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable260 [2021-07-13 19:40:45,943 INFO L430 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:40:45,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:40:45,943 INFO L82 PathProgramCache]: Analyzing trace with hash 1032797682, now seen corresponding path program 12 times [2021-07-13 19:40:45,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:40:45,943 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57632272] [2021-07-13 19:40:45,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:40:45,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:40:46,191 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:40:46,192 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:40:46,192 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57632272] [2021-07-13 19:40:46,192 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57632272] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 19:40:46,192 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [364620989] [2021-07-13 19:40:46,192 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 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 [2021-07-13 19:40:46,224 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-07-13 19:40:46,224 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 19:40:46,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 29 conjunts are in the unsatisfiable core [2021-07-13 19:40:46,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 19:40:46,541 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2021-07-13 19:40:46,822 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:40:46,822 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [364620989] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 19:40:46,822 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 19:40:46,822 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-07-13 19:40:46,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321084021] [2021-07-13 19:40:46,822 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:40:46,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:40:46,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:40:46,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:40:46,823 INFO L87 Difference]: Start difference. First operand 475 states and 1435 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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) [2021-07-13 19:40:46,984 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 75 [2021-07-13 19:40:47,157 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 77 [2021-07-13 19:40:47,391 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 76 [2021-07-13 19:40:47,646 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 78 [2021-07-13 19:40:48,118 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 66 [2021-07-13 19:40:48,398 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 68 [2021-07-13 19:40:48,635 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 76 [2021-07-13 19:40:48,844 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 76 [2021-07-13 19:40:48,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:40:48,886 INFO L93 Difference]: Finished difference Result 793 states and 2341 transitions. [2021-07-13 19:40:48,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-07-13 19:40:48,887 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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 [2021-07-13 19:40:48,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:40:48,888 INFO L225 Difference]: With dead ends: 793 [2021-07-13 19:40:48,888 INFO L226 Difference]: Without dead ends: 778 [2021-07-13 19:40:48,888 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 2393.0ms TimeCoverageRelationStatistics Valid=241, Invalid=881, Unknown=0, NotChecked=0, Total=1122 [2021-07-13 19:40:48,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states. [2021-07-13 19:40:48,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 476. [2021-07-13 19:40:48,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 475 states have (on average 3.031578947368421) internal successors, (1440), 475 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:40:48,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 1440 transitions. [2021-07-13 19:40:48,895 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 1440 transitions. Word has length 20 [2021-07-13 19:40:48,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:40:48,895 INFO L482 AbstractCegarLoop]: Abstraction has 476 states and 1440 transitions. [2021-07-13 19:40:48,895 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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) [2021-07-13 19:40:48,895 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 1440 transitions. [2021-07-13 19:40:48,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-07-13 19:40:48,896 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:40:48,896 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:40:49,111 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable279 [2021-07-13 19:40:49,111 INFO L430 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:40:49,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:40:49,112 INFO L82 PathProgramCache]: Analyzing trace with hash -978365570, now seen corresponding path program 13 times [2021-07-13 19:40:49,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:40:49,112 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055486844] [2021-07-13 19:40:49,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:40:49,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:40:49,334 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:40:49,334 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:40:49,334 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055486844] [2021-07-13 19:40:49,334 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055486844] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 19:40:49,334 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748666508] [2021-07-13 19:40:49,334 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 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 [2021-07-13 19:40:49,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:40:49,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 33 conjunts are in the unsatisfiable core [2021-07-13 19:40:49,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 19:40:49,992 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:40:49,992 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1748666508] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 19:40:49,992 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 19:40:49,992 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-07-13 19:40:49,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435522835] [2021-07-13 19:40:49,996 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:40:49,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:40:49,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:40:49,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:40:49,997 INFO L87 Difference]: Start difference. First operand 476 states and 1440 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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) [2021-07-13 19:40:50,650 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 60 [2021-07-13 19:40:50,810 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 61 [2021-07-13 19:40:50,950 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 57 [2021-07-13 19:40:51,198 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2021-07-13 19:40:51,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:40:51,272 INFO L93 Difference]: Finished difference Result 729 states and 2132 transitions. [2021-07-13 19:40:51,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-07-13 19:40:51,272 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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 [2021-07-13 19:40:51,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:40:51,273 INFO L225 Difference]: With dead ends: 729 [2021-07-13 19:40:51,273 INFO L226 Difference]: Without dead ends: 714 [2021-07-13 19:40:51,274 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 1637.6ms TimeCoverageRelationStatistics Valid=182, Invalid=748, Unknown=0, NotChecked=0, Total=930 [2021-07-13 19:40:51,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2021-07-13 19:40:51,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 480. [2021-07-13 19:40:51,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 479 states have (on average 3.0313152400835075) internal successors, (1452), 479 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:40:51,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 1452 transitions. [2021-07-13 19:40:51,280 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 1452 transitions. Word has length 20 [2021-07-13 19:40:51,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:40:51,280 INFO L482 AbstractCegarLoop]: Abstraction has 480 states and 1452 transitions. [2021-07-13 19:40:51,280 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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) [2021-07-13 19:40:51,280 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 1452 transitions. [2021-07-13 19:40:51,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-07-13 19:40:51,281 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:40:51,281 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:40:51,496 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable297 [2021-07-13 19:40:51,497 INFO L430 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:40:51,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:40:51,497 INFO L82 PathProgramCache]: Analyzing trace with hash -685146856, now seen corresponding path program 14 times [2021-07-13 19:40:51,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:40:51,497 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853836912] [2021-07-13 19:40:51,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:40:51,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:40:51,885 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:40:51,885 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:40:51,885 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853836912] [2021-07-13 19:40:51,885 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853836912] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 19:40:51,885 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821232] [2021-07-13 19:40:51,885 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 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 [2021-07-13 19:40:51,918 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-13 19:40:51,918 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 19:40:51,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 29 conjunts are in the unsatisfiable core [2021-07-13 19:40:51,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 19:40:52,382 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 50 [2021-07-13 19:40:52,605 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:40:52,605 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1821232] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 19:40:52,605 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 19:40:52,605 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-07-13 19:40:52,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668290044] [2021-07-13 19:40:52,605 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-07-13 19:40:52,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:40:52,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-07-13 19:40:52,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2021-07-13 19:40:52,606 INFO L87 Difference]: Start difference. First operand 480 states and 1452 transitions. Second operand has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 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) [2021-07-13 19:40:53,352 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 68 [2021-07-13 19:40:53,631 WARN L205 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 65 [2021-07-13 19:40:53,802 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2021-07-13 19:40:53,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:40:53,835 INFO L93 Difference]: Finished difference Result 690 states and 2034 transitions. [2021-07-13 19:40:53,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-13 19:40:53,836 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 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 [2021-07-13 19:40:53,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:40:53,837 INFO L225 Difference]: With dead ends: 690 [2021-07-13 19:40:53,837 INFO L226 Difference]: Without dead ends: 675 [2021-07-13 19:40:53,837 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 1782.4ms TimeCoverageRelationStatistics Valid=140, Invalid=672, Unknown=0, NotChecked=0, Total=812 [2021-07-13 19:40:53,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2021-07-13 19:40:53,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 476. [2021-07-13 19:40:53,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 475 states have (on average 3.0294736842105263) internal successors, (1439), 475 states have internal predecessors, (1439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:40:53,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 1439 transitions. [2021-07-13 19:40:53,843 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 1439 transitions. Word has length 20 [2021-07-13 19:40:53,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:40:53,843 INFO L482 AbstractCegarLoop]: Abstraction has 476 states and 1439 transitions. [2021-07-13 19:40:53,843 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 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) [2021-07-13 19:40:53,843 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 1439 transitions. [2021-07-13 19:40:53,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-07-13 19:40:53,844 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:40:53,844 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:40:54,044 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable315,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 19:40:54,044 INFO L430 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:40:54,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:40:54,045 INFO L82 PathProgramCache]: Analyzing trace with hash 853559068, now seen corresponding path program 15 times [2021-07-13 19:40:54,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:40:54,045 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152753221] [2021-07-13 19:40:54,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:40:54,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:40:54,623 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:40:54,623 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:40:54,623 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152753221] [2021-07-13 19:40:54,623 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152753221] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 19:40:54,623 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465948446] [2021-07-13 19:40:54,623 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 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 [2021-07-13 19:40:54,666 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-07-13 19:40:54,667 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 19:40:54,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 29 conjunts are in the unsatisfiable core [2021-07-13 19:40:54,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 19:40:55,049 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2021-07-13 19:40:55,266 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:40:55,266 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1465948446] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 19:40:55,267 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 19:40:55,267 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-07-13 19:40:55,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174187433] [2021-07-13 19:40:55,267 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-07-13 19:40:55,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:40:55,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-07-13 19:40:55,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2021-07-13 19:40:55,267 INFO L87 Difference]: Start difference. First operand 476 states and 1439 transitions. Second operand has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 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) [2021-07-13 19:40:55,500 WARN L205 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 63 [2021-07-13 19:40:55,646 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 38 [2021-07-13 19:40:55,882 WARN L205 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-07-13 19:40:56,747 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2021-07-13 19:40:57,077 WARN L205 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2021-07-13 19:40:57,386 WARN L205 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 75 [2021-07-13 19:40:57,506 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 49 [2021-07-13 19:40:57,675 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2021-07-13 19:40:58,047 WARN L205 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 87 [2021-07-13 19:40:58,410 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2021-07-13 19:40:58,722 WARN L205 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2021-07-13 19:40:58,955 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 19:40:59,224 WARN L205 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 64 [2021-07-13 19:40:59,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:40:59,276 INFO L93 Difference]: Finished difference Result 792 states and 2327 transitions. [2021-07-13 19:40:59,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-07-13 19:40:59,276 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 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 [2021-07-13 19:40:59,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:40:59,277 INFO L225 Difference]: With dead ends: 792 [2021-07-13 19:40:59,278 INFO L226 Difference]: Without dead ends: 777 [2021-07-13 19:40:59,278 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 356 ImplicationChecksByTransitivity, 4544.7ms TimeCoverageRelationStatistics Valid=337, Invalid=1303, Unknown=0, NotChecked=0, Total=1640 [2021-07-13 19:40:59,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2021-07-13 19:40:59,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 469. [2021-07-13 19:40:59,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 468 states have (on average 3.034188034188034) internal successors, (1420), 468 states have internal predecessors, (1420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:40:59,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 1420 transitions. [2021-07-13 19:40:59,284 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 1420 transitions. Word has length 20 [2021-07-13 19:40:59,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:40:59,284 INFO L482 AbstractCegarLoop]: Abstraction has 469 states and 1420 transitions. [2021-07-13 19:40:59,284 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 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) [2021-07-13 19:40:59,284 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 1420 transitions. [2021-07-13 19:40:59,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-07-13 19:40:59,285 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:40:59,285 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:40:59,485 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable341,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 19:40:59,485 INFO L430 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:40:59,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:40:59,486 INFO L82 PathProgramCache]: Analyzing trace with hash -876815946, now seen corresponding path program 16 times [2021-07-13 19:40:59,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:40:59,486 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592596134] [2021-07-13 19:40:59,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:40:59,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:40:59,834 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:40:59,834 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:40:59,834 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592596134] [2021-07-13 19:40:59,834 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592596134] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 19:40:59,834 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669584338] [2021-07-13 19:40:59,834 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 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 [2021-07-13 19:40:59,866 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-07-13 19:40:59,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 19:40:59,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 29 conjunts are in the unsatisfiable core [2021-07-13 19:40:59,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 19:41:00,390 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:41:00,390 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1669584338] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 19:41:00,390 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 19:41:00,390 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-07-13 19:41:00,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125210190] [2021-07-13 19:41:00,390 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-07-13 19:41:00,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:41:00,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-07-13 19:41:00,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2021-07-13 19:41:00,391 INFO L87 Difference]: Start difference. First operand 469 states and 1420 transitions. Second operand has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 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) [2021-07-13 19:41:00,577 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 63 [2021-07-13 19:41:00,797 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2021-07-13 19:41:00,980 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 43 [2021-07-13 19:41:01,263 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 65 [2021-07-13 19:41:01,395 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 45 [2021-07-13 19:41:01,543 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 44 [2021-07-13 19:41:01,863 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 46 [2021-07-13 19:41:02,071 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2021-07-13 19:41:02,355 WARN L205 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 19:41:02,503 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 47 [2021-07-13 19:41:02,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:41:02,681 INFO L93 Difference]: Finished difference Result 660 states and 1962 transitions. [2021-07-13 19:41:02,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-07-13 19:41:02,681 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 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 [2021-07-13 19:41:02,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:41:02,682 INFO L225 Difference]: With dead ends: 660 [2021-07-13 19:41:02,682 INFO L226 Difference]: Without dead ends: 645 [2021-07-13 19:41:02,682 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 2562.6ms TimeCoverageRelationStatistics Valid=206, Invalid=916, Unknown=0, NotChecked=0, Total=1122 [2021-07-13 19:41:02,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2021-07-13 19:41:02,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 467. [2021-07-13 19:41:02,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 466 states have (on average 3.032188841201717) internal successors, (1413), 466 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:41:02,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 1413 transitions. [2021-07-13 19:41:02,688 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 1413 transitions. Word has length 20 [2021-07-13 19:41:02,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:41:02,688 INFO L482 AbstractCegarLoop]: Abstraction has 467 states and 1413 transitions. [2021-07-13 19:41:02,688 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 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) [2021-07-13 19:41:02,688 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 1413 transitions. [2021-07-13 19:41:02,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-07-13 19:41:02,689 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:41:02,689 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:41:02,889 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable362,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 19:41:02,890 INFO L430 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:41:02,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:41:02,890 INFO L82 PathProgramCache]: Analyzing trace with hash 1982279990, now seen corresponding path program 17 times [2021-07-13 19:41:02,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:41:02,890 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679064240] [2021-07-13 19:41:02,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:41:02,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:41:03,141 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:41:03,141 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:41:03,141 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679064240] [2021-07-13 19:41:03,141 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679064240] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 19:41:03,141 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [505798402] [2021-07-13 19:41:03,141 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 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 [2021-07-13 19:41:03,177 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-13 19:41:03,177 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 19:41:03,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 29 conjunts are in the unsatisfiable core [2021-07-13 19:41:03,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 19:41:03,675 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:41:03,676 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [505798402] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 19:41:03,676 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 19:41:03,676 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-07-13 19:41:03,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480304668] [2021-07-13 19:41:03,676 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-07-13 19:41:03,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:41:03,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-07-13 19:41:03,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2021-07-13 19:41:03,677 INFO L87 Difference]: Start difference. First operand 467 states and 1413 transitions. Second operand has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 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) [2021-07-13 19:41:04,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:41:04,288 INFO L93 Difference]: Finished difference Result 594 states and 1777 transitions. [2021-07-13 19:41:04,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-13 19:41:04,288 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 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 [2021-07-13 19:41:04,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:41:04,289 INFO L225 Difference]: With dead ends: 594 [2021-07-13 19:41:04,289 INFO L226 Difference]: Without dead ends: 579 [2021-07-13 19:41:04,289 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 863.4ms TimeCoverageRelationStatistics Valid=102, Invalid=498, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:41:04,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2021-07-13 19:41:04,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 469. [2021-07-13 19:41:04,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 468 states have (on average 3.034188034188034) internal successors, (1420), 468 states have internal predecessors, (1420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:41:04,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 1420 transitions. [2021-07-13 19:41:04,295 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 1420 transitions. Word has length 20 [2021-07-13 19:41:04,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:41:04,295 INFO L482 AbstractCegarLoop]: Abstraction has 469 states and 1420 transitions. [2021-07-13 19:41:04,295 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 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) [2021-07-13 19:41:04,295 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 1420 transitions. [2021-07-13 19:41:04,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-07-13 19:41:04,295 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:41:04,296 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:41:04,496 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable382,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 19:41:04,496 INFO L430 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:41:04,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:41:04,496 INFO L82 PathProgramCache]: Analyzing trace with hash -714017834, now seen corresponding path program 18 times [2021-07-13 19:41:04,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:41:04,496 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127088777] [2021-07-13 19:41:04,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:41:04,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:41:04,866 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:41:04,866 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:41:04,866 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127088777] [2021-07-13 19:41:04,866 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127088777] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 19:41:04,866 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4723282] [2021-07-13 19:41:04,866 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 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 [2021-07-13 19:41:04,899 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-07-13 19:41:04,899 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 19:41:04,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 29 conjunts are in the unsatisfiable core [2021-07-13 19:41:04,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 19:41:05,400 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:41:05,400 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [4723282] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 19:41:05,400 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 19:41:05,400 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-07-13 19:41:05,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396049034] [2021-07-13 19:41:05,400 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-07-13 19:41:05,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:41:05,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-07-13 19:41:05,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2021-07-13 19:41:05,401 INFO L87 Difference]: Start difference. First operand 469 states and 1420 transitions. Second operand has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 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) [2021-07-13 19:41:06,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:41:06,590 INFO L93 Difference]: Finished difference Result 627 states and 1868 transitions. [2021-07-13 19:41:06,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-07-13 19:41:06,590 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 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 [2021-07-13 19:41:06,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:41:06,591 INFO L225 Difference]: With dead ends: 627 [2021-07-13 19:41:06,591 INFO L226 Difference]: Without dead ends: 612 [2021-07-13 19:41:06,591 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 1531.2ms TimeCoverageRelationStatistics Valid=168, Invalid=702, Unknown=0, NotChecked=0, Total=870 [2021-07-13 19:41:06,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2021-07-13 19:41:06,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 465. [2021-07-13 19:41:06,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 464 states have (on average 3.0344827586206895) internal successors, (1408), 464 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:41:06,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 1408 transitions. [2021-07-13 19:41:06,597 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 1408 transitions. Word has length 20 [2021-07-13 19:41:06,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:41:06,597 INFO L482 AbstractCegarLoop]: Abstraction has 465 states and 1408 transitions. [2021-07-13 19:41:06,597 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 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) [2021-07-13 19:41:06,597 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 1408 transitions. [2021-07-13 19:41:06,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-07-13 19:41:06,598 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:41:06,598 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:41:06,798 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable403 [2021-07-13 19:41:06,798 INFO L430 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:41:06,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:41:06,798 INFO L82 PathProgramCache]: Analyzing trace with hash 670139466, now seen corresponding path program 19 times [2021-07-13 19:41:06,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:41:06,799 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469002049] [2021-07-13 19:41:06,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:41:06,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:41:06,952 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:41:06,952 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:41:06,952 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469002049] [2021-07-13 19:41:06,952 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469002049] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 19:41:06,952 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660480528] [2021-07-13 19:41:06,952 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 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 [2021-07-13 19:41:06,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:41:06,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 29 conjunts are in the unsatisfiable core [2021-07-13 19:41:06,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 19:41:07,949 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:07,950 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:07,955 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 3 [2021-07-13 19:41:07,956 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:07,965 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:07,965 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:07,965 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2021-07-13 19:41:07,967 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:07,974 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-07-13 19:41:07,975 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:07,982 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:07,982 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:07,983 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2021-07-13 19:41:07,983 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:07,990 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:07,991 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:07,991 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2021-07-13 19:41:07,992 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:07,999 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:07,999 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:08,000 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2021-07-13 19:41:08,001 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:08,011 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:08,011 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:08,012 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 [2021-07-13 19:41:08,012 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:08,018 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:08,018 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:08,024 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-07-13 19:41:08,025 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:08,031 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-07-13 19:41:08,032 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:08,042 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:08,043 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:08,049 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:08,050 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:08,050 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2021-07-13 19:41:08,051 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:08,057 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:08,058 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:08,058 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 11 treesize of output 7 [2021-07-13 19:41:08,059 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:08,065 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:08,066 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:08,066 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 18 treesize of output 1 [2021-07-13 19:41:08,067 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:08,073 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 [2021-07-13 19:41:08,074 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:08,080 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-07-13 19:41:08,081 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:08,092 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:08,093 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:08,099 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:08,100 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:08,100 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2021-07-13 19:41:08,101 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:08,107 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:08,108 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:08,108 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2021-07-13 19:41:08,109 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:08,115 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:08,115 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:08,116 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2021-07-13 19:41:08,116 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:08,123 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:08,123 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:08,124 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 [2021-07-13 19:41:08,124 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:08,131 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:08,132 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:08,132 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 [2021-07-13 19:41:08,133 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:08,140 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:08,141 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:08,147 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:08,148 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:08,148 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2021-07-13 19:41:08,149 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:08,155 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:08,155 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:08,156 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2021-07-13 19:41:08,156 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:08,163 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:08,164 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:08,169 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:08,170 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:08,176 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-07-13 19:41:08,177 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:08,183 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:08,184 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:08,189 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:08,190 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:08,190 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2021-07-13 19:41:08,192 INFO L550 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:08,197 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:08,198 INFO L550 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:08,204 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:08,204 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:08,205 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2021-07-13 19:41:08,205 INFO L550 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:08,211 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:08,212 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:08,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2021-07-13 19:41:08,213 INFO L550 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:08,218 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:08,219 INFO L550 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:08,224 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:08,224 INFO L550 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:08,229 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:08,230 INFO L550 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:08,235 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:08,236 INFO L550 ElimStorePlain]: Start of recursive call 38: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:08,241 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:08,242 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:08,242 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 [2021-07-13 19:41:08,242 INFO L550 ElimStorePlain]: Start of recursive call 39: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:08,247 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:08,248 INFO L550 ElimStorePlain]: Start of recursive call 40: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:08,253 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:08,253 INFO L550 ElimStorePlain]: Start of recursive call 41: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:08,258 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:08,259 INFO L550 ElimStorePlain]: Start of recursive call 42: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:08,265 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:08,266 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:08,266 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2021-07-13 19:41:08,267 INFO L550 ElimStorePlain]: Start of recursive call 43: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:08,273 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:08,274 INFO L550 ElimStorePlain]: Start of recursive call 44: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:08,280 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:08,280 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:08,281 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2021-07-13 19:41:08,281 INFO L550 ElimStorePlain]: Start of recursive call 45: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:08,287 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:08,288 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:08,288 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2021-07-13 19:41:08,289 INFO L550 ElimStorePlain]: Start of recursive call 46: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:08,294 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:08,295 INFO L550 ElimStorePlain]: Start of recursive call 47: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:08,301 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:08,302 INFO L550 ElimStorePlain]: Start of recursive call 48: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:08,307 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:08,307 INFO L550 ElimStorePlain]: Start of recursive call 49: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:08,312 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:08,315 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:08,315 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2021-07-13 19:41:08,317 INFO L550 ElimStorePlain]: Start of recursive call 50: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:08,322 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:08,323 INFO L550 ElimStorePlain]: Start of recursive call 51: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:08,328 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 [2021-07-13 19:41:08,329 INFO L550 ElimStorePlain]: Start of recursive call 52: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:08,336 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:08,336 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:08,337 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 [2021-07-13 19:41:08,338 INFO L550 ElimStorePlain]: Start of recursive call 53: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:08,342 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:08,343 INFO L550 ElimStorePlain]: Start of recursive call 54: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:08,348 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:08,348 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:08,349 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2021-07-13 19:41:08,350 INFO L550 ElimStorePlain]: Start of recursive call 55: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:08,355 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:08,356 INFO L550 ElimStorePlain]: Start of recursive call 56: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:08,362 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:08,362 INFO L550 ElimStorePlain]: Start of recursive call 57: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:08,367 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:08,367 INFO L550 ElimStorePlain]: Start of recursive call 58: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:08,372 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:08,373 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:08,373 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2021-07-13 19:41:08,373 INFO L550 ElimStorePlain]: Start of recursive call 59: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:08,378 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:08,378 INFO L550 ElimStorePlain]: Start of recursive call 60: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:08,383 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:08,383 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:08,383 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2021-07-13 19:41:08,384 INFO L550 ElimStorePlain]: Start of recursive call 61: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:08,388 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:08,389 INFO L550 ElimStorePlain]: Start of recursive call 62: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:08,393 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:08,393 INFO L550 ElimStorePlain]: Start of recursive call 63: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:08,397 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:08,398 INFO L550 ElimStorePlain]: Start of recursive call 64: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:08,402 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:08,403 INFO L550 ElimStorePlain]: Start of recursive call 65: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:08,406 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:08,407 INFO L550 ElimStorePlain]: Start of recursive call 66: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:08,411 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:08,411 INFO L550 ElimStorePlain]: Start of recursive call 67: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:08,423 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:08,423 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:08,423 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2021-07-13 19:41:08,424 INFO L550 ElimStorePlain]: Start of recursive call 68: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:08,428 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:08,429 INFO L550 ElimStorePlain]: Start of recursive call 69: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:08,432 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:08,433 INFO L550 ElimStorePlain]: Start of recursive call 70: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:08,437 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:08,437 INFO L550 ElimStorePlain]: Start of recursive call 71: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:08,441 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:08,442 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:08,442 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2021-07-13 19:41:08,443 INFO L550 ElimStorePlain]: Start of recursive call 72: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:08,447 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:08,447 INFO L550 ElimStorePlain]: Start of recursive call 73: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:08,451 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:08,452 INFO L550 ElimStorePlain]: Start of recursive call 74: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:08,455 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:08,456 INFO L550 ElimStorePlain]: Start of recursive call 75: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:08,460 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:08,460 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:08,461 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2021-07-13 19:41:08,462 INFO L550 ElimStorePlain]: Start of recursive call 76: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:08,466 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:08,466 INFO L550 ElimStorePlain]: Start of recursive call 77: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:08,470 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:08,470 INFO L550 ElimStorePlain]: Start of recursive call 78: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:08,474 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:08,474 INFO L550 ElimStorePlain]: Start of recursive call 79: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:08,478 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:08,479 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:08,479 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2021-07-13 19:41:08,480 INFO L550 ElimStorePlain]: Start of recursive call 80: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:08,483 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:08,483 INFO L550 ElimStorePlain]: Start of recursive call 81: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:08,486 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:08,487 INFO L550 ElimStorePlain]: Start of recursive call 82: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:08,747 WARN L205 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2021-07-13 19:41:08,748 INFO L628 ElimStorePlain]: treesize reduction 257, result has 56.4 percent of original size [2021-07-13 19:41:08,768 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 9 dim-0 vars, and 14 xjuncts. [2021-07-13 19:41:08,768 INFO L247 ElimStorePlain]: Needed 82 recursive calls to eliminate 2 variables, input treesize:3475, output treesize:293 [2021-07-13 19:41:08,922 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2021-07-13 19:41:09,359 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2021-07-13 19:41:12,614 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:41:12,614 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [660480528] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 19:41:12,614 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 19:41:12,614 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-07-13 19:41:12,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027161030] [2021-07-13 19:41:12,614 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-13 19:41:12,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:41:12,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-13 19:41:12,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2021-07-13 19:41:12,615 INFO L87 Difference]: Start difference. First operand 465 states and 1408 transitions. Second operand has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 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) [2021-07-13 19:41:13,380 WARN L205 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 108 [2021-07-13 19:41:13,587 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2021-07-13 19:41:13,892 WARN L205 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 136 [2021-07-13 19:41:13,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:41:13,938 INFO L93 Difference]: Finished difference Result 678 states and 2014 transitions. [2021-07-13 19:41:13,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-13 19:41:13,938 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 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 [2021-07-13 19:41:13,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:41:13,939 INFO L225 Difference]: With dead ends: 678 [2021-07-13 19:41:13,939 INFO L226 Difference]: Without dead ends: 663 [2021-07-13 19:41:13,939 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 1814.8ms TimeCoverageRelationStatistics Valid=104, Invalid=448, Unknown=0, NotChecked=0, Total=552 [2021-07-13 19:41:13,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2021-07-13 19:41:13,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 463. [2021-07-13 19:41:13,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 462 states have (on average 3.036796536796537) internal successors, (1403), 462 states have internal predecessors, (1403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:41:13,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 1403 transitions. [2021-07-13 19:41:13,945 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 1403 transitions. Word has length 20 [2021-07-13 19:41:13,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:41:13,945 INFO L482 AbstractCegarLoop]: Abstraction has 463 states and 1403 transitions. [2021-07-13 19:41:13,945 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 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) [2021-07-13 19:41:13,946 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 1403 transitions. [2021-07-13 19:41:13,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-07-13 19:41:13,946 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:41:13,946 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:41:14,147 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable419,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 19:41:14,147 INFO L430 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:41:14,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:41:14,147 INFO L82 PathProgramCache]: Analyzing trace with hash 20773330, now seen corresponding path program 20 times [2021-07-13 19:41:14,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:41:14,147 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3742723] [2021-07-13 19:41:14,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:41:14,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:41:14,401 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:41:14,401 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:41:14,401 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3742723] [2021-07-13 19:41:14,401 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3742723] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 19:41:14,401 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [828410322] [2021-07-13 19:41:14,401 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 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 [2021-07-13 19:41:14,433 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-13 19:41:14,434 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 19:41:14,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 29 conjunts are in the unsatisfiable core [2021-07-13 19:41:14,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 19:41:14,737 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2021-07-13 19:41:14,994 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:41:14,995 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [828410322] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 19:41:14,995 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 19:41:14,995 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-07-13 19:41:14,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760131536] [2021-07-13 19:41:14,995 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:41:14,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:41:14,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:41:14,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:41:14,995 INFO L87 Difference]: Start difference. First operand 463 states and 1403 transitions. Second operand has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 19 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) [2021-07-13 19:41:15,231 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2021-07-13 19:41:15,646 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2021-07-13 19:41:16,070 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 60 [2021-07-13 19:41:16,413 WARN L205 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 75 [2021-07-13 19:41:16,545 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2021-07-13 19:41:16,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:41:16,719 INFO L93 Difference]: Finished difference Result 681 states and 2025 transitions. [2021-07-13 19:41:16,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-07-13 19:41:16,719 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 19 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 [2021-07-13 19:41:16,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:41:16,720 INFO L225 Difference]: With dead ends: 681 [2021-07-13 19:41:16,720 INFO L226 Difference]: Without dead ends: 666 [2021-07-13 19:41:16,720 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 2043.9ms TimeCoverageRelationStatistics Valid=197, Invalid=859, Unknown=0, NotChecked=0, Total=1056 [2021-07-13 19:41:16,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2021-07-13 19:41:16,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 462. [2021-07-13 19:41:16,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 461 states have (on average 3.0325379609544467) internal successors, (1398), 461 states have internal predecessors, (1398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:41:16,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 1398 transitions. [2021-07-13 19:41:16,726 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 1398 transitions. Word has length 20 [2021-07-13 19:41:16,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:41:16,726 INFO L482 AbstractCegarLoop]: Abstraction has 462 states and 1398 transitions. [2021-07-13 19:41:16,726 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 19 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) [2021-07-13 19:41:16,726 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 1398 transitions. [2021-07-13 19:41:16,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-07-13 19:41:16,727 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:41:16,727 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:41:16,927 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1746 [2021-07-13 19:41:16,928 INFO L430 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:41:16,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:41:16,928 INFO L82 PathProgramCache]: Analyzing trace with hash 1121094966, now seen corresponding path program 21 times [2021-07-13 19:41:16,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:41:16,928 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990524985] [2021-07-13 19:41:16,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:41:16,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:41:17,298 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:41:17,298 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:41:17,298 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990524985] [2021-07-13 19:41:17,298 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990524985] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 19:41:17,298 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568859643] [2021-07-13 19:41:17,298 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 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 [2021-07-13 19:41:17,337 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-07-13 19:41:17,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 19:41:17,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 29 conjunts are in the unsatisfiable core [2021-07-13 19:41:17,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 19:41:17,814 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:41:17,814 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [568859643] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 19:41:17,814 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 19:41:17,814 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-07-13 19:41:17,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444388379] [2021-07-13 19:41:17,814 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-07-13 19:41:17,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:41:17,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-07-13 19:41:17,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2021-07-13 19:41:17,815 INFO L87 Difference]: Start difference. First operand 462 states and 1398 transitions. Second operand has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 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) [2021-07-13 19:41:18,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:41:18,387 INFO L93 Difference]: Finished difference Result 609 states and 1816 transitions. [2021-07-13 19:41:18,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-13 19:41:18,387 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 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 [2021-07-13 19:41:18,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:41:18,388 INFO L225 Difference]: With dead ends: 609 [2021-07-13 19:41:18,388 INFO L226 Difference]: Without dead ends: 594 [2021-07-13 19:41:18,388 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 995.4ms TimeCoverageRelationStatistics Valid=115, Invalid=485, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:41:18,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2021-07-13 19:41:18,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 467. [2021-07-13 19:41:18,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 466 states have (on average 3.040772532188841) internal successors, (1417), 466 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) [2021-07-13 19:41:18,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 1417 transitions. [2021-07-13 19:41:18,394 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 1417 transitions. Word has length 20 [2021-07-13 19:41:18,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:41:18,394 INFO L482 AbstractCegarLoop]: Abstraction has 467 states and 1417 transitions. [2021-07-13 19:41:18,394 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 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) [2021-07-13 19:41:18,394 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 1417 transitions. [2021-07-13 19:41:18,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-07-13 19:41:18,395 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:41:18,395 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:41:18,595 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1762 [2021-07-13 19:41:18,595 INFO L430 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:41:18,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:41:18,596 INFO L82 PathProgramCache]: Analyzing trace with hash -1167101614, now seen corresponding path program 22 times [2021-07-13 19:41:18,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:41:18,596 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531564326] [2021-07-13 19:41:18,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:41:18,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:41:18,826 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:41:18,826 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:41:18,826 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531564326] [2021-07-13 19:41:18,826 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531564326] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 19:41:18,826 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60883135] [2021-07-13 19:41:18,826 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 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 [2021-07-13 19:41:18,867 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-07-13 19:41:18,867 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 19:41:18,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 29 conjunts are in the unsatisfiable core [2021-07-13 19:41:18,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 19:41:19,841 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-07-13 19:41:19,842 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:19,855 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:19,856 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:19,856 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2021-07-13 19:41:19,857 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:19,871 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:19,872 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:19,873 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 16 treesize of output 7 [2021-07-13 19:41:19,874 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:19,887 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:19,888 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:19,901 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:19,902 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:19,902 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 [2021-07-13 19:41:19,903 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:19,916 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:19,916 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:19,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2021-07-13 19:41:19,917 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:19,931 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:19,932 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:19,932 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 7 [2021-07-13 19:41:19,933 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:19,951 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:19,953 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:19,953 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2021-07-13 19:41:19,954 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:19,966 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:19,966 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:19,967 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2021-07-13 19:41:19,967 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:19,979 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:19,980 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:19,992 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:19,993 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:19,994 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2021-07-13 19:41:19,995 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:20,007 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:20,008 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:20,008 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 [2021-07-13 19:41:20,009 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:20,022 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:20,023 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:20,023 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2021-07-13 19:41:20,024 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:20,035 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:20,035 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:20,036 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2021-07-13 19:41:20,036 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:20,048 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:20,049 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:20,062 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:20,063 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:20,063 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2021-07-13 19:41:20,064 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:20,077 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:20,077 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:20,078 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2021-07-13 19:41:20,078 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:20,092 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:20,093 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:20,106 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:20,107 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:20,118 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:20,119 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:20,133 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:20,134 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:20,148 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:20,149 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:20,163 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:20,163 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:20,177 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:20,178 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:20,192 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:20,192 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:20,205 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:20,206 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:20,218 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 [2021-07-13 19:41:20,218 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:20,232 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:20,233 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:20,247 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:20,247 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:20,248 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 11 treesize of output 7 [2021-07-13 19:41:20,248 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:20,267 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:20,268 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:20,268 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2021-07-13 19:41:20,269 INFO L550 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:20,282 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:20,282 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:20,283 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2021-07-13 19:41:20,284 INFO L550 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:20,294 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:20,295 INFO L550 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:20,303 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:20,304 INFO L550 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:20,316 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:20,316 INFO L550 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:20,327 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:20,328 INFO L550 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:20,338 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:20,339 INFO L550 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:20,350 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:20,351 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:20,351 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 16 treesize of output 7 [2021-07-13 19:41:20,352 INFO L550 ElimStorePlain]: Start of recursive call 38: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:20,363 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:20,364 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:20,364 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 [2021-07-13 19:41:20,365 INFO L550 ElimStorePlain]: Start of recursive call 39: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:20,380 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:20,380 INFO L550 ElimStorePlain]: Start of recursive call 40: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:20,393 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:20,394 INFO L550 ElimStorePlain]: Start of recursive call 41: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:20,406 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:20,407 INFO L550 ElimStorePlain]: Start of recursive call 42: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:20,421 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:20,421 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:20,421 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 [2021-07-13 19:41:20,422 INFO L550 ElimStorePlain]: Start of recursive call 43: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:20,437 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:20,438 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:20,438 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2021-07-13 19:41:20,439 INFO L550 ElimStorePlain]: Start of recursive call 44: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:20,452 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:20,453 INFO L550 ElimStorePlain]: Start of recursive call 45: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:20,466 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:20,467 INFO L550 ElimStorePlain]: Start of recursive call 46: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:20,479 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:20,480 INFO L550 ElimStorePlain]: Start of recursive call 47: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:20,492 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:20,493 INFO L550 ElimStorePlain]: Start of recursive call 48: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:20,505 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:20,505 INFO L550 ElimStorePlain]: Start of recursive call 49: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:20,518 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:20,519 INFO L550 ElimStorePlain]: Start of recursive call 50: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:20,530 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:20,530 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:20,531 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2021-07-13 19:41:20,531 INFO L550 ElimStorePlain]: Start of recursive call 51: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:20,543 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:20,543 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:20,544 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2021-07-13 19:41:20,544 INFO L550 ElimStorePlain]: Start of recursive call 52: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:20,560 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-07-13 19:41:20,561 INFO L550 ElimStorePlain]: Start of recursive call 53: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:20,572 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:20,572 INFO L550 ElimStorePlain]: Start of recursive call 54: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:20,585 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:20,586 INFO L550 ElimStorePlain]: Start of recursive call 55: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:20,598 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 [2021-07-13 19:41:20,600 INFO L550 ElimStorePlain]: Start of recursive call 56: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:20,611 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:20,612 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:20,612 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 3 [2021-07-13 19:41:20,613 INFO L550 ElimStorePlain]: Start of recursive call 57: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:20,623 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:20,624 INFO L550 ElimStorePlain]: Start of recursive call 58: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:20,635 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:20,635 INFO L550 ElimStorePlain]: Start of recursive call 59: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:20,647 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:20,647 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:20,647 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 16 treesize of output 7 [2021-07-13 19:41:20,648 INFO L550 ElimStorePlain]: Start of recursive call 60: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:20,660 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:20,661 INFO L550 ElimStorePlain]: Start of recursive call 61: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:20,671 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:20,672 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:20,672 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2021-07-13 19:41:20,673 INFO L550 ElimStorePlain]: Start of recursive call 62: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:20,685 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:20,685 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:20,686 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 11 treesize of output 3 [2021-07-13 19:41:20,686 INFO L550 ElimStorePlain]: Start of recursive call 63: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:20,699 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:20,699 INFO L550 ElimStorePlain]: Start of recursive call 64: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:20,711 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 [2021-07-13 19:41:20,712 INFO L550 ElimStorePlain]: Start of recursive call 65: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:20,724 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:20,724 INFO L550 ElimStorePlain]: Start of recursive call 66: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:20,736 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:20,737 INFO L550 ElimStorePlain]: Start of recursive call 67: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:20,751 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:20,751 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:20,752 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 16 treesize of output 7 [2021-07-13 19:41:20,752 INFO L550 ElimStorePlain]: Start of recursive call 68: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:20,767 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 5 treesize of output 3 [2021-07-13 19:41:20,768 INFO L550 ElimStorePlain]: Start of recursive call 69: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:20,778 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:20,779 INFO L550 ElimStorePlain]: Start of recursive call 70: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:20,791 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:20,792 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:20,792 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 16 treesize of output 7 [2021-07-13 19:41:20,793 INFO L550 ElimStorePlain]: Start of recursive call 71: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:20,803 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:20,804 INFO L550 ElimStorePlain]: Start of recursive call 72: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:20,813 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:20,814 INFO L550 ElimStorePlain]: Start of recursive call 73: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:20,824 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:20,824 INFO L550 ElimStorePlain]: Start of recursive call 74: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:20,834 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:20,834 INFO L550 ElimStorePlain]: Start of recursive call 75: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:20,843 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:20,844 INFO L550 ElimStorePlain]: Start of recursive call 76: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:20,853 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:20,854 INFO L550 ElimStorePlain]: Start of recursive call 77: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:20,864 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:20,864 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:20,864 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2021-07-13 19:41:20,865 INFO L550 ElimStorePlain]: Start of recursive call 78: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:20,875 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:20,876 INFO L550 ElimStorePlain]: Start of recursive call 79: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:20,897 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:20,898 INFO L550 ElimStorePlain]: Start of recursive call 80: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:20,905 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:20,906 INFO L550 ElimStorePlain]: Start of recursive call 81: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:20,914 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 [2021-07-13 19:41:20,915 INFO L550 ElimStorePlain]: Start of recursive call 82: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:20,922 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 [2021-07-13 19:41:20,923 INFO L550 ElimStorePlain]: Start of recursive call 83: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:20,931 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:20,932 INFO L550 ElimStorePlain]: Start of recursive call 84: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:20,939 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:20,940 INFO L550 ElimStorePlain]: Start of recursive call 85: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:20,947 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:20,948 INFO L550 ElimStorePlain]: Start of recursive call 86: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:20,956 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:20,956 INFO L550 ElimStorePlain]: Start of recursive call 87: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:20,964 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:20,964 INFO L550 ElimStorePlain]: Start of recursive call 88: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:20,972 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:20,972 INFO L550 ElimStorePlain]: Start of recursive call 89: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:20,980 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:20,980 INFO L550 ElimStorePlain]: Start of recursive call 90: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:20,988 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:20,988 INFO L550 ElimStorePlain]: Start of recursive call 91: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:20,996 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:20,996 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:20,997 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2021-07-13 19:41:20,998 INFO L550 ElimStorePlain]: Start of recursive call 92: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:21,005 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:21,005 INFO L550 ElimStorePlain]: Start of recursive call 93: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:21,013 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:21,013 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:21,014 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2021-07-13 19:41:21,015 INFO L550 ElimStorePlain]: Start of recursive call 94: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:21,020 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:21,021 INFO L550 ElimStorePlain]: Start of recursive call 95: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:21,028 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:21,029 INFO L550 ElimStorePlain]: Start of recursive call 96: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:21,036 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:21,036 INFO L550 ElimStorePlain]: Start of recursive call 97: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:21,044 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:21,044 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:21,045 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2021-07-13 19:41:21,046 INFO L550 ElimStorePlain]: Start of recursive call 98: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:21,053 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:21,054 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:21,054 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2021-07-13 19:41:21,055 INFO L550 ElimStorePlain]: Start of recursive call 99: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:21,060 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:21,061 INFO L550 ElimStorePlain]: Start of recursive call 100: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:21,068 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:21,069 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:21,069 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2021-07-13 19:41:21,070 INFO L550 ElimStorePlain]: Start of recursive call 101: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:21,075 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:21,076 INFO L550 ElimStorePlain]: Start of recursive call 102: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:21,083 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:21,083 INFO L550 ElimStorePlain]: Start of recursive call 103: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:21,089 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:21,090 INFO L550 ElimStorePlain]: Start of recursive call 104: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:21,097 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:21,097 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:21,098 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2021-07-13 19:41:21,107 INFO L550 ElimStorePlain]: Start of recursive call 105: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:21,114 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:21,115 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:21,115 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2021-07-13 19:41:21,116 INFO L550 ElimStorePlain]: Start of recursive call 106: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:21,123 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:21,123 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:21,124 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 [2021-07-13 19:41:21,124 INFO L550 ElimStorePlain]: Start of recursive call 107: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:21,130 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:21,130 INFO L550 ElimStorePlain]: Start of recursive call 108: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:21,137 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:21,138 INFO L550 ElimStorePlain]: Start of recursive call 109: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:21,144 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:21,145 INFO L550 ElimStorePlain]: Start of recursive call 110: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:21,151 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:21,152 INFO L550 ElimStorePlain]: Start of recursive call 111: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:21,158 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:21,159 INFO L550 ElimStorePlain]: Start of recursive call 112: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:21,165 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:21,166 INFO L550 ElimStorePlain]: Start of recursive call 113: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:21,172 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:21,173 INFO L550 ElimStorePlain]: Start of recursive call 114: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:21,179 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:21,180 INFO L550 ElimStorePlain]: Start of recursive call 115: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:21,187 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:21,187 INFO L550 ElimStorePlain]: Start of recursive call 116: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:21,193 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:21,194 INFO L550 ElimStorePlain]: Start of recursive call 117: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:21,201 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:21,201 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:21,201 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 11 treesize of output 3 [2021-07-13 19:41:21,202 INFO L550 ElimStorePlain]: Start of recursive call 118: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:21,209 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:21,209 INFO L550 ElimStorePlain]: Start of recursive call 119: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:21,215 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:21,216 INFO L550 ElimStorePlain]: Start of recursive call 120: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:21,222 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:21,222 INFO L550 ElimStorePlain]: Start of recursive call 121: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:21,228 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:21,229 INFO L550 ElimStorePlain]: Start of recursive call 122: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:21,234 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:21,235 INFO L550 ElimStorePlain]: Start of recursive call 123: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:21,241 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:21,241 INFO L550 ElimStorePlain]: Start of recursive call 124: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:21,247 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:21,248 INFO L550 ElimStorePlain]: Start of recursive call 125: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:21,253 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:21,254 INFO L550 ElimStorePlain]: Start of recursive call 126: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:21,260 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:21,260 INFO L550 ElimStorePlain]: Start of recursive call 127: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:21,266 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:21,267 INFO L550 ElimStorePlain]: Start of recursive call 128: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:21,272 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:21,273 INFO L550 ElimStorePlain]: Start of recursive call 129: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:21,279 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:21,281 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:21,281 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2021-07-13 19:41:21,282 INFO L550 ElimStorePlain]: Start of recursive call 130: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:21,287 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:21,288 INFO L550 ElimStorePlain]: Start of recursive call 131: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:21,293 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:21,294 INFO L550 ElimStorePlain]: Start of recursive call 132: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:21,304 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:21,304 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:21,305 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2021-07-13 19:41:21,305 INFO L550 ElimStorePlain]: Start of recursive call 133: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:21,311 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:21,312 INFO L550 ElimStorePlain]: Start of recursive call 134: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:21,317 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:21,318 INFO L550 ElimStorePlain]: Start of recursive call 135: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:21,323 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:21,324 INFO L550 ElimStorePlain]: Start of recursive call 136: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:21,329 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:21,330 INFO L550 ElimStorePlain]: Start of recursive call 137: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:21,335 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:21,335 INFO L550 ElimStorePlain]: Start of recursive call 138: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:21,340 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:21,341 INFO L550 ElimStorePlain]: Start of recursive call 139: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:21,345 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:21,346 INFO L550 ElimStorePlain]: Start of recursive call 140: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:21,351 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:21,351 INFO L550 ElimStorePlain]: Start of recursive call 141: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:21,356 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:21,357 INFO L550 ElimStorePlain]: Start of recursive call 142: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:21,361 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:21,362 INFO L550 ElimStorePlain]: Start of recursive call 143: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:21,366 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:21,367 INFO L550 ElimStorePlain]: Start of recursive call 144: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:21,371 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:21,372 INFO L550 ElimStorePlain]: Start of recursive call 145: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:21,784 WARN L205 SmtUtils]: Spent 411.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 52 [2021-07-13 19:41:21,784 INFO L628 ElimStorePlain]: treesize reduction 919, result has 32.6 percent of original size [2021-07-13 19:41:21,790 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 9 dim-0 vars, and 14 xjuncts. [2021-07-13 19:41:21,790 INFO L247 ElimStorePlain]: Needed 145 recursive calls to eliminate 2 variables, input treesize:7871, output treesize:405 [2021-07-13 19:41:21,984 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2021-07-13 19:41:22,248 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2021-07-13 19:41:27,148 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:41:27,149 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [60883135] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 19:41:27,149 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 19:41:27,149 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-07-13 19:41:27,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458549391] [2021-07-13 19:41:27,149 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-13 19:41:27,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:41:27,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-13 19:41:27,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2021-07-13 19:41:27,149 INFO L87 Difference]: Start difference. First operand 467 states and 1417 transitions. Second operand has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 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) [2021-07-13 19:41:27,306 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 33 [2021-07-13 19:41:27,550 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2021-07-13 19:41:27,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:41:27,833 INFO L93 Difference]: Finished difference Result 613 states and 1834 transitions. [2021-07-13 19:41:27,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-13 19:41:27,833 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 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 [2021-07-13 19:41:27,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:41:27,834 INFO L225 Difference]: With dead ends: 613 [2021-07-13 19:41:27,834 INFO L226 Difference]: Without dead ends: 598 [2021-07-13 19:41:27,834 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 1300.8ms TimeCoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2021-07-13 19:41:27,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2021-07-13 19:41:27,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 465. [2021-07-13 19:41:27,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 464 states have (on average 3.038793103448276) internal successors, (1410), 464 states have internal predecessors, (1410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:41:27,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 1410 transitions. [2021-07-13 19:41:27,840 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 1410 transitions. Word has length 20 [2021-07-13 19:41:27,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:41:27,840 INFO L482 AbstractCegarLoop]: Abstraction has 465 states and 1410 transitions. [2021-07-13 19:41:27,840 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 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) [2021-07-13 19:41:27,840 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 1410 transitions. [2021-07-13 19:41:27,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-07-13 19:41:27,841 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:41:27,841 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:41:28,041 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1778,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 19:41:28,041 INFO L430 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:41:28,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:41:28,042 INFO L82 PathProgramCache]: Analyzing trace with hash 30969814, now seen corresponding path program 23 times [2021-07-13 19:41:28,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:41:28,042 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584788914] [2021-07-13 19:41:28,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:41:28,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:41:28,331 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:41:28,331 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:41:28,331 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584788914] [2021-07-13 19:41:28,331 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584788914] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 19:41:28,331 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590967085] [2021-07-13 19:41:28,331 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 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 [2021-07-13 19:41:28,363 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-13 19:41:28,363 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 19:41:28,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 29 conjunts are in the unsatisfiable core [2021-07-13 19:41:28,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 19:41:28,879 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:41:28,879 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1590967085] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 19:41:28,879 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 19:41:28,879 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-07-13 19:41:28,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952655805] [2021-07-13 19:41:28,880 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-07-13 19:41:28,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:41:28,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-07-13 19:41:28,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2021-07-13 19:41:28,880 INFO L87 Difference]: Start difference. First operand 465 states and 1410 transitions. Second operand has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 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) [2021-07-13 19:41:29,238 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2021-07-13 19:41:29,369 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-07-13 19:41:29,528 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2021-07-13 19:41:29,828 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 63 [2021-07-13 19:41:29,979 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2021-07-13 19:41:30,154 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2021-07-13 19:41:30,513 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 68 [2021-07-13 19:41:30,647 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 68 [2021-07-13 19:41:30,988 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 64 [2021-07-13 19:41:31,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:41:31,133 INFO L93 Difference]: Finished difference Result 739 states and 2197 transitions. [2021-07-13 19:41:31,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-07-13 19:41:31,133 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 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 [2021-07-13 19:41:31,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:41:31,134 INFO L225 Difference]: With dead ends: 739 [2021-07-13 19:41:31,134 INFO L226 Difference]: Without dead ends: 724 [2021-07-13 19:41:31,135 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 364 ImplicationChecksByTransitivity, 2443.3ms TimeCoverageRelationStatistics Valid=288, Invalid=1194, Unknown=0, NotChecked=0, Total=1482 [2021-07-13 19:41:31,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2021-07-13 19:41:31,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 463. [2021-07-13 19:41:31,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 462 states have (on average 3.036796536796537) internal successors, (1403), 462 states have internal predecessors, (1403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:41:31,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 1403 transitions. [2021-07-13 19:41:31,140 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 1403 transitions. Word has length 20 [2021-07-13 19:41:31,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:41:31,141 INFO L482 AbstractCegarLoop]: Abstraction has 463 states and 1403 transitions. [2021-07-13 19:41:31,141 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 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) [2021-07-13 19:41:31,141 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 1403 transitions. [2021-07-13 19:41:31,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-07-13 19:41:31,141 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:41:31,141 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:41:31,345 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3776,24 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 19:41:31,345 INFO L430 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:41:31,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:41:31,346 INFO L82 PathProgramCache]: Analyzing trace with hash 1850936306, now seen corresponding path program 24 times [2021-07-13 19:41:31,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:41:31,346 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208124403] [2021-07-13 19:41:31,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:41:31,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:41:31,594 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:41:31,594 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:41:31,595 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208124403] [2021-07-13 19:41:31,595 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208124403] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 19:41:31,595 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793450970] [2021-07-13 19:41:31,595 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 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 [2021-07-13 19:41:31,626 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-07-13 19:41:31,627 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 19:41:31,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 29 conjunts are in the unsatisfiable core [2021-07-13 19:41:31,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 19:41:32,120 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:41:32,120 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [793450970] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 19:41:32,120 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 19:41:32,121 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-07-13 19:41:32,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283785342] [2021-07-13 19:41:32,121 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:41:32,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:41:32,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:41:32,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:41:32,121 INFO L87 Difference]: Start difference. First operand 463 states and 1403 transitions. Second operand has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 19 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) [2021-07-13 19:41:33,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:41:33,213 INFO L93 Difference]: Finished difference Result 619 states and 1849 transitions. [2021-07-13 19:41:33,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-07-13 19:41:33,214 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 19 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 [2021-07-13 19:41:33,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:41:33,215 INFO L225 Difference]: With dead ends: 619 [2021-07-13 19:41:33,215 INFO L226 Difference]: Without dead ends: 604 [2021-07-13 19:41:33,215 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 1289.3ms TimeCoverageRelationStatistics Valid=145, Invalid=667, Unknown=0, NotChecked=0, Total=812 [2021-07-13 19:41:33,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2021-07-13 19:41:33,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 461. [2021-07-13 19:41:33,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 460 states have (on average 3.0304347826086957) internal successors, (1394), 460 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:41:33,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 1394 transitions. [2021-07-13 19:41:33,221 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 1394 transitions. Word has length 20 [2021-07-13 19:41:33,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:41:33,222 INFO L482 AbstractCegarLoop]: Abstraction has 461 states and 1394 transitions. [2021-07-13 19:41:33,222 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 19 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) [2021-07-13 19:41:33,222 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 1394 transitions. [2021-07-13 19:41:33,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-07-13 19:41:33,222 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:41:33,222 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:41:33,437 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3797,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 19:41:33,437 INFO L430 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:41:33,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:41:33,438 INFO L82 PathProgramCache]: Analyzing trace with hash -756638044, now seen corresponding path program 25 times [2021-07-13 19:41:33,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:41:33,438 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346129381] [2021-07-13 19:41:33,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:41:33,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:41:33,638 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:41:33,638 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:41:33,638 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346129381] [2021-07-13 19:41:33,638 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346129381] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 19:41:33,638 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266798827] [2021-07-13 19:41:33,638 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 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 [2021-07-13 19:41:33,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:41:33,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 29 conjunts are in the unsatisfiable core [2021-07-13 19:41:33,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 19:41:34,148 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:41:34,148 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266798827] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 19:41:34,148 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 19:41:34,148 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-07-13 19:41:34,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613385935] [2021-07-13 19:41:34,148 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-07-13 19:41:34,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:41:34,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-07-13 19:41:34,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2021-07-13 19:41:34,149 INFO L87 Difference]: Start difference. First operand 461 states and 1394 transitions. Second operand has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 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) [2021-07-13 19:41:34,822 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2021-07-13 19:41:34,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:41:34,856 INFO L93 Difference]: Finished difference Result 730 states and 2166 transitions. [2021-07-13 19:41:34,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-07-13 19:41:34,856 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 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 [2021-07-13 19:41:34,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:41:34,857 INFO L225 Difference]: With dead ends: 730 [2021-07-13 19:41:34,857 INFO L226 Difference]: Without dead ends: 715 [2021-07-13 19:41:34,858 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 965.6ms TimeCoverageRelationStatistics Valid=147, Invalid=609, Unknown=0, NotChecked=0, Total=756 [2021-07-13 19:41:34,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2021-07-13 19:41:34,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 460. [2021-07-13 19:41:34,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 459 states have (on average 3.028322440087146) internal successors, (1390), 459 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:41:34,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 1390 transitions. [2021-07-13 19:41:34,864 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 1390 transitions. Word has length 20 [2021-07-13 19:41:34,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:41:34,864 INFO L482 AbstractCegarLoop]: Abstraction has 460 states and 1390 transitions. [2021-07-13 19:41:34,864 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 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) [2021-07-13 19:41:34,864 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 1390 transitions. [2021-07-13 19:41:34,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-07-13 19:41:34,864 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:41:34,864 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:41:35,065 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3816 [2021-07-13 19:41:35,065 INFO L430 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:41:35,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:41:35,065 INFO L82 PathProgramCache]: Analyzing trace with hash 629398172, now seen corresponding path program 26 times [2021-07-13 19:41:35,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:41:35,065 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937172170] [2021-07-13 19:41:35,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:41:35,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:41:35,419 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:41:35,419 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:41:35,420 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937172170] [2021-07-13 19:41:35,420 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937172170] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 19:41:35,420 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235376530] [2021-07-13 19:41:35,420 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 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 [2021-07-13 19:41:35,451 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-13 19:41:35,451 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 19:41:35,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 29 conjunts are in the unsatisfiable core [2021-07-13 19:41:35,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 19:41:35,793 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2021-07-13 19:41:36,000 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:41:36,000 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1235376530] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 19:41:36,000 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 19:41:36,000 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-07-13 19:41:36,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184307427] [2021-07-13 19:41:36,001 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-07-13 19:41:36,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:41:36,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-07-13 19:41:36,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2021-07-13 19:41:36,001 INFO L87 Difference]: Start difference. First operand 460 states and 1390 transitions. Second operand has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 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) [2021-07-13 19:41:36,334 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 66 [2021-07-13 19:41:36,513 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 49 [2021-07-13 19:41:36,752 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 64 [2021-07-13 19:41:36,877 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2021-07-13 19:41:37,105 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 54 [2021-07-13 19:41:37,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:41:37,353 INFO L93 Difference]: Finished difference Result 560 states and 1664 transitions. [2021-07-13 19:41:37,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-07-13 19:41:37,353 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 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 [2021-07-13 19:41:37,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:41:37,354 INFO L225 Difference]: With dead ends: 560 [2021-07-13 19:41:37,354 INFO L226 Difference]: Without dead ends: 545 [2021-07-13 19:41:37,354 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 1755.3ms TimeCoverageRelationStatistics Valid=111, Invalid=645, Unknown=0, NotChecked=0, Total=756 [2021-07-13 19:41:37,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2021-07-13 19:41:37,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 466. [2021-07-13 19:41:37,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 465 states have (on average 3.0301075268817206) internal successors, (1409), 465 states have internal predecessors, (1409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:41:37,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 1409 transitions. [2021-07-13 19:41:37,360 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 1409 transitions. Word has length 20 [2021-07-13 19:41:37,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:41:37,360 INFO L482 AbstractCegarLoop]: Abstraction has 466 states and 1409 transitions. [2021-07-13 19:41:37,360 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 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) [2021-07-13 19:41:37,360 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 1409 transitions. [2021-07-13 19:41:37,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-07-13 19:41:37,360 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:41:37,361 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:41:37,561 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3832,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 19:41:37,561 INFO L430 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:41:37,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:41:37,561 INFO L82 PathProgramCache]: Analyzing trace with hash -1252975526, now seen corresponding path program 27 times [2021-07-13 19:41:37,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:41:37,561 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481821174] [2021-07-13 19:41:37,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:41:37,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:41:37,877 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:41:37,877 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:41:37,877 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481821174] [2021-07-13 19:41:37,877 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481821174] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 19:41:37,877 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431349571] [2021-07-13 19:41:37,877 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 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 [2021-07-13 19:41:37,909 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-07-13 19:41:37,909 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 19:41:37,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 29 conjunts are in the unsatisfiable core [2021-07-13 19:41:37,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 19:41:38,413 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:41:38,413 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431349571] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 19:41:38,413 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 19:41:38,413 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-07-13 19:41:38,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373438412] [2021-07-13 19:41:38,413 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-07-13 19:41:38,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:41:38,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-07-13 19:41:38,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2021-07-13 19:41:38,414 INFO L87 Difference]: Start difference. First operand 466 states and 1409 transitions. Second operand has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 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) [2021-07-13 19:41:38,800 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 43 [2021-07-13 19:41:39,183 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2021-07-13 19:41:39,322 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2021-07-13 19:41:39,631 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2021-07-13 19:41:39,752 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 46 [2021-07-13 19:41:40,317 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 42 [2021-07-13 19:41:40,444 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2021-07-13 19:41:40,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:41:40,475 INFO L93 Difference]: Finished difference Result 684 states and 2021 transitions. [2021-07-13 19:41:40,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-07-13 19:41:40,475 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 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 [2021-07-13 19:41:40,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:41:40,476 INFO L225 Difference]: With dead ends: 684 [2021-07-13 19:41:40,476 INFO L226 Difference]: Without dead ends: 654 [2021-07-13 19:41:40,476 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 2390.4ms TimeCoverageRelationStatistics Valid=295, Invalid=1037, Unknown=0, NotChecked=0, Total=1332 [2021-07-13 19:41:40,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2021-07-13 19:41:40,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 464. [2021-07-13 19:41:40,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 463 states have (on average 3.0280777537796975) internal successors, (1402), 463 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) [2021-07-13 19:41:40,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 1402 transitions. [2021-07-13 19:41:40,482 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 1402 transitions. Word has length 20 [2021-07-13 19:41:40,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:41:40,482 INFO L482 AbstractCegarLoop]: Abstraction has 464 states and 1402 transitions. [2021-07-13 19:41:40,482 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 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) [2021-07-13 19:41:40,482 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 1402 transitions. [2021-07-13 19:41:40,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-07-13 19:41:40,483 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:41:40,483 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:41:40,683 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3851,28 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 19:41:40,683 INFO L430 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:41:40,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:41:40,684 INFO L82 PathProgramCache]: Analyzing trace with hash 1606120410, now seen corresponding path program 28 times [2021-07-13 19:41:40,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:41:40,684 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934322681] [2021-07-13 19:41:40,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:41:40,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:41:40,924 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:41:40,924 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:41:40,924 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934322681] [2021-07-13 19:41:40,924 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934322681] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 19:41:40,924 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395928615] [2021-07-13 19:41:40,924 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 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 [2021-07-13 19:41:40,956 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-07-13 19:41:40,956 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 19:41:40,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 29 conjunts are in the unsatisfiable core [2021-07-13 19:41:40,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 19:41:41,947 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:41,948 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:41,948 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2021-07-13 19:41:41,949 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:41,955 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:41,956 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:41,956 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2021-07-13 19:41:41,957 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:41,964 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:41,964 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:41,964 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2021-07-13 19:41:41,965 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:41,972 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:41,972 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:41,973 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 7 [2021-07-13 19:41:41,973 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:41,980 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:41,980 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:41,980 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2021-07-13 19:41:41,981 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:41,987 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:41,988 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:41,988 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2021-07-13 19:41:41,989 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:41,995 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:41,996 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:41,996 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2021-07-13 19:41:41,997 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:42,003 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:42,004 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:42,004 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2021-07-13 19:41:42,005 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:42,011 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:42,012 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:42,012 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 [2021-07-13 19:41:42,013 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:42,019 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:42,020 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:42,020 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2021-07-13 19:41:42,020 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:42,027 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:42,027 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:42,028 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2021-07-13 19:41:42,028 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:42,036 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:42,036 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:42,037 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2021-07-13 19:41:42,037 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:42,064 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:42,065 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:42,065 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2021-07-13 19:41:42,066 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:42,072 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:42,072 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:42,073 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2021-07-13 19:41:42,073 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:42,079 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:42,080 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:42,080 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2021-07-13 19:41:42,081 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:42,086 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:42,087 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:42,087 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 25 treesize of output 9 [2021-07-13 19:41:42,088 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:42,094 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:42,094 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:42,095 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2021-07-13 19:41:42,095 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:42,101 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:42,102 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:42,102 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2021-07-13 19:41:42,103 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:42,108 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:42,109 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:42,109 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 18 treesize of output 1 [2021-07-13 19:41:42,110 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:42,116 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:42,116 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:42,116 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2021-07-13 19:41:42,117 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:42,123 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:42,124 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:42,124 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 25 treesize of output 9 [2021-07-13 19:41:42,125 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:42,131 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:42,131 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:42,137 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:42,138 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:42,138 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2021-07-13 19:41:42,139 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:42,146 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:42,146 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:42,152 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:42,153 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:42,153 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 [2021-07-13 19:41:42,154 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:42,160 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:42,160 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:42,166 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:42,167 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:42,167 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 18 treesize of output 1 [2021-07-13 19:41:42,168 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:42,174 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:42,175 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:42,175 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2021-07-13 19:41:42,181 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:42,188 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:42,188 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:42,189 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2021-07-13 19:41:42,190 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:42,196 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:42,196 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:42,197 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 18 treesize of output 1 [2021-07-13 19:41:42,198 INFO L550 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:42,204 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:42,205 INFO L550 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:42,212 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:42,213 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:42,213 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 18 treesize of output 1 [2021-07-13 19:41:42,214 INFO L550 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:42,220 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:42,221 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:42,221 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 11 treesize of output 3 [2021-07-13 19:41:42,222 INFO L550 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:42,230 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:42,230 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:42,231 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2021-07-13 19:41:42,232 INFO L550 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:42,239 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:42,239 INFO L550 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:42,246 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:42,246 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:42,247 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2021-07-13 19:41:42,247 INFO L550 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:42,253 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:42,253 INFO L550 ElimStorePlain]: Start of recursive call 38: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:42,259 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:42,260 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:42,260 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 11 treesize of output 3 [2021-07-13 19:41:42,261 INFO L550 ElimStorePlain]: Start of recursive call 39: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:42,267 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:42,267 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:42,268 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2021-07-13 19:41:42,268 INFO L550 ElimStorePlain]: Start of recursive call 40: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:42,274 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:42,275 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:42,275 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2021-07-13 19:41:42,275 INFO L550 ElimStorePlain]: Start of recursive call 41: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:42,281 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:42,282 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:42,282 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2021-07-13 19:41:42,283 INFO L550 ElimStorePlain]: Start of recursive call 42: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:42,288 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:42,289 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:42,289 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2021-07-13 19:41:42,290 INFO L550 ElimStorePlain]: Start of recursive call 43: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:42,295 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:42,295 INFO L550 ElimStorePlain]: Start of recursive call 44: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:42,301 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:42,301 INFO L550 ElimStorePlain]: Start of recursive call 45: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:42,307 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:42,307 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:42,307 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 [2021-07-13 19:41:42,308 INFO L550 ElimStorePlain]: Start of recursive call 46: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:42,313 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:42,314 INFO L550 ElimStorePlain]: Start of recursive call 47: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:42,319 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:42,319 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:42,319 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2021-07-13 19:41:42,320 INFO L550 ElimStorePlain]: Start of recursive call 48: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:42,326 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:42,326 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:42,326 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 7 [2021-07-13 19:41:42,327 INFO L550 ElimStorePlain]: Start of recursive call 49: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:42,333 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:42,333 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:42,334 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2021-07-13 19:41:42,334 INFO L550 ElimStorePlain]: Start of recursive call 50: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:42,340 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:42,340 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:42,340 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 [2021-07-13 19:41:42,341 INFO L550 ElimStorePlain]: Start of recursive call 51: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:42,346 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:42,346 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:42,347 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 18 treesize of output 1 [2021-07-13 19:41:42,347 INFO L550 ElimStorePlain]: Start of recursive call 52: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:42,352 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:42,353 INFO L550 ElimStorePlain]: Start of recursive call 53: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:42,358 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:42,358 INFO L550 ElimStorePlain]: Start of recursive call 54: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:42,363 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:42,363 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:42,364 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 [2021-07-13 19:41:42,364 INFO L550 ElimStorePlain]: Start of recursive call 55: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:42,369 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:42,369 INFO L550 ElimStorePlain]: Start of recursive call 56: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:42,376 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:42,376 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:42,376 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2021-07-13 19:41:42,377 INFO L550 ElimStorePlain]: Start of recursive call 57: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:42,382 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:42,383 INFO L550 ElimStorePlain]: Start of recursive call 58: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:42,387 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:42,388 INFO L550 ElimStorePlain]: Start of recursive call 59: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:42,392 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:42,393 INFO L550 ElimStorePlain]: Start of recursive call 60: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:42,397 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:42,398 INFO L550 ElimStorePlain]: Start of recursive call 61: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:42,402 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:42,402 INFO L550 ElimStorePlain]: Start of recursive call 62: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:42,407 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:42,407 INFO L550 ElimStorePlain]: Start of recursive call 63: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:42,412 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:42,412 INFO L550 ElimStorePlain]: Start of recursive call 64: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:42,416 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:42,417 INFO L550 ElimStorePlain]: Start of recursive call 65: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:42,421 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:42,422 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:42,422 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2021-07-13 19:41:42,423 INFO L550 ElimStorePlain]: Start of recursive call 66: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:42,427 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:42,428 INFO L550 ElimStorePlain]: Start of recursive call 67: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:42,432 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:42,433 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:42,433 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2021-07-13 19:41:42,434 INFO L550 ElimStorePlain]: Start of recursive call 68: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:42,438 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:42,439 INFO L550 ElimStorePlain]: Start of recursive call 69: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:42,443 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:42,443 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:42,444 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2021-07-13 19:41:42,444 INFO L550 ElimStorePlain]: Start of recursive call 70: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:42,448 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:42,449 INFO L550 ElimStorePlain]: Start of recursive call 71: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:42,453 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:42,454 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:42,454 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2021-07-13 19:41:42,455 INFO L550 ElimStorePlain]: Start of recursive call 72: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:42,459 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:42,459 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:42,460 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 [2021-07-13 19:41:42,461 INFO L550 ElimStorePlain]: Start of recursive call 73: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:42,466 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:42,466 INFO L550 ElimStorePlain]: Start of recursive call 74: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:42,473 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:42,474 INFO L550 ElimStorePlain]: Start of recursive call 75: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:42,478 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:42,479 INFO L550 ElimStorePlain]: Start of recursive call 76: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:42,482 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:42,483 INFO L550 ElimStorePlain]: Start of recursive call 77: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:42,486 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:42,487 INFO L550 ElimStorePlain]: Start of recursive call 78: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:42,490 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:42,491 INFO L550 ElimStorePlain]: Start of recursive call 79: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:42,495 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:42,495 INFO L550 ElimStorePlain]: Start of recursive call 80: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:42,499 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:42,499 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 19:41:42,500 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 25 treesize of output 9 [2021-07-13 19:41:42,501 INFO L550 ElimStorePlain]: Start of recursive call 81: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:42,504 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-13 19:41:42,505 INFO L550 ElimStorePlain]: Start of recursive call 82: End of recursive call: and 1 xjuncts. [2021-07-13 19:41:42,809 WARN L205 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2021-07-13 19:41:42,809 INFO L628 ElimStorePlain]: treesize reduction 150, result has 72.9 percent of original size [2021-07-13 19:41:42,816 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 9 dim-0 vars, and 14 xjuncts. [2021-07-13 19:41:42,816 INFO L247 ElimStorePlain]: Needed 82 recursive calls to eliminate 2 variables, input treesize:3880, output treesize:363 [2021-07-13 19:41:42,983 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2021-07-13 19:41:43,250 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2021-07-13 19:41:43,648 WARN L205 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 152 [2021-07-13 19:41:45,800 WARN L205 SmtUtils]: Spent 1.99 s on a formula simplification. DAG size of input: 148 DAG size of output: 145 [2021-07-13 19:41:48,574 WARN L205 SmtUtils]: Spent 2.77 s on a formula simplification. DAG size of input: 145 DAG size of output: 160 [2021-07-13 19:41:54,874 WARN L205 SmtUtils]: Spent 6.30 s on a formula simplification. DAG size of input: 123 DAG size of output: 123 [2021-07-13 19:42:09,969 WARN L205 SmtUtils]: Spent 14.93 s on a formula simplification. DAG size of input: 123 DAG size of output: 123 [2021-07-13 19:42:13,887 WARN L205 SmtUtils]: Spent 3.80 s on a formula simplification. DAG size of input: 128 DAG size of output: 128 [2021-07-13 19:42:14,204 WARN L205 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 130 [2021-07-13 19:42:18,908 WARN L205 SmtUtils]: Spent 4.69 s on a formula simplification. DAG size of input: 123 DAG size of output: 123 [2021-07-13 19:42:19,431 WARN L205 SmtUtils]: Spent 516.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 121 [2021-07-13 19:42:26,195 WARN L205 SmtUtils]: Spent 6.68 s on a formula simplification. DAG size of input: 127 DAG size of output: 127 [2021-07-13 19:42:27,039 WARN L205 SmtUtils]: Spent 774.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 130 [2021-07-13 19:42:30,292 WARN L205 SmtUtils]: Spent 3.24 s on a formula simplification. DAG size of input: 136 DAG size of output: 136 [2021-07-13 19:42:43,736 WARN L205 SmtUtils]: Spent 13.44 s on a formula simplification. DAG size of input: 148 DAG size of output: 150 [2021-07-13 19:42:48,154 WARN L205 SmtUtils]: Spent 3.74 s on a formula simplification. DAG size of input: 140 DAG size of output: 142 [2021-07-13 19:42:50,851 WARN L205 SmtUtils]: Spent 2.69 s on a formula simplification. DAG size of input: 135 DAG size of output: 135 [2021-07-13 19:42:51,470 WARN L205 SmtUtils]: Spent 615.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 135 [2021-07-13 19:42:51,724 WARN L205 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 136 [2021-07-13 19:42:52,681 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 136 [2021-07-13 19:42:53,300 WARN L205 SmtUtils]: Spent 614.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 136 [2021-07-13 19:45:50,491 WARN L205 SmtUtils]: Spent 2.95 m on a formula simplification. DAG size of input: 160 DAG size of output: 160 [2021-07-13 19:45:54,116 WARN L205 SmtUtils]: Spent 3.62 s on a formula simplification. DAG size of input: 144 DAG size of output: 144 [2021-07-13 19:45:55,282 WARN L205 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 144 DAG size of output: 144 [2021-07-13 19:45:58,210 WARN L205 SmtUtils]: Spent 2.93 s on a formula simplification. DAG size of input: 145 DAG size of output: 145 [2021-07-13 19:45:59,794 WARN L205 SmtUtils]: Spent 1.58 s on a formula simplification. DAG size of input: 145 DAG size of output: 145 [2021-07-13 19:46:13,620 WARN L205 SmtUtils]: Spent 13.82 s on a formula simplification. DAG size of input: 145 DAG size of output: 160 [2021-07-13 19:46:13,917 WARN L205 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 136 [2021-07-13 19:46:29,699 WARN L205 SmtUtils]: Spent 15.78 s on a formula simplification. DAG size of input: 136 DAG size of output: 151 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown