/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/send-receive.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-29289db [2021-06-05 05:50:06,696 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-05 05:50:06,698 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-05 05:50:06,738 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-05 05:50:06,758 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-05 05:50:06,759 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-05 05:50:06,760 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-05 05:50:06,761 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-05 05:50:06,764 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-05 05:50:06,764 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-05 05:50:06,766 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-05 05:50:06,771 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-05 05:50:06,772 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-05 05:50:06,773 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-05 05:50:06,774 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-05 05:50:06,776 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-05 05:50:06,781 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-05 05:50:06,799 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-05 05:50:06,799 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-05 05:50:06,800 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-05 05:50:06,804 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-06-05 05:50:06,835 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-05 05:50:06,835 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-05 05:50:06,836 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-05 05:50:06,836 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-05 05:50:06,838 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-05 05:50:06,838 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-05 05:50:06,838 INFO L138 SettingsManager]: * Use SBE=true [2021-06-05 05:50:06,839 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-05 05:50:06,839 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-05 05:50:06,839 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-05 05:50:06,840 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-05 05:50:06,840 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-05 05:50:06,840 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-05 05:50:06,840 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-05 05:50:06,840 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-05 05:50:06,840 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-05 05:50:06,840 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-05 05:50:06,841 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-05 05:50:06,841 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-05 05:50:06,841 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-05 05:50:06,841 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-05 05:50:06,841 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-05 05:50:06,841 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-05 05:50:06,841 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 05:50:06,841 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-05 05:50:06,842 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-05 05:50:06,842 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-05 05:50:06,842 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-05 05:50:06,842 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-05 05:50:06,842 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-05 05:50:06,842 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-05 05:50:06,842 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-05 05:50:07,101 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-05 05:50:07,119 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-05 05:50:07,121 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-05 05:50:07,122 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-05 05:50:07,124 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-05 05:50:07,125 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/send-receive.wvr.bpl [2021-06-05 05:50:07,125 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/send-receive.wvr.bpl' [2021-06-05 05:50:07,169 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-05 05:50:07,171 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-05 05:50:07,172 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-05 05:50:07,172 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-05 05:50:07,172 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-05 05:50:07,181 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "send-receive.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 05:50:07" (1/1) ... [2021-06-05 05:50:07,186 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "send-receive.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 05:50:07" (1/1) ... [2021-06-05 05:50:07,194 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-05 05:50:07,196 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-05 05:50:07,196 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-05 05:50:07,197 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-05 05:50:07,203 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "send-receive.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 05:50:07" (1/1) ... [2021-06-05 05:50:07,203 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "send-receive.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 05:50:07" (1/1) ... [2021-06-05 05:50:07,203 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "send-receive.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 05:50:07" (1/1) ... [2021-06-05 05:50:07,203 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "send-receive.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 05:50:07" (1/1) ... [2021-06-05 05:50:07,205 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "send-receive.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 05:50:07" (1/1) ... [2021-06-05 05:50:07,208 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "send-receive.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 05:50:07" (1/1) ... [2021-06-05 05:50:07,208 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "send-receive.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 05:50:07" (1/1) ... [2021-06-05 05:50:07,209 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-05 05:50:07,210 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-05 05:50:07,210 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-05 05:50:07,210 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-05 05:50:07,213 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "send-receive.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 05:50:07" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 05:50:07,273 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-05 05:50:07,273 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-05 05:50:07,274 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-05 05:50:07,274 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-05 05:50:07,274 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-05 05:50:07,274 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-05 05:50:07,274 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-05 05:50:07,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-05 05:50:07,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-05 05:50:07,275 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-06-05 05:50:07,275 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-06-05 05:50:07,276 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-06-05 05:50:07,277 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-05 05:50:07,436 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-05 05:50:07,436 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-05 05:50:07,438 INFO L202 PluginConnector]: Adding new model send-receive.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 05:50:07 BoogieIcfgContainer [2021-06-05 05:50:07,438 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-05 05:50:07,439 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-05 05:50:07,439 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-05 05:50:07,441 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-05 05:50:07,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "send-receive.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 05:50:07" (1/2) ... [2021-06-05 05:50:07,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c22b8ad and model type send-receive.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 05:50:07, skipping insertion in model container [2021-06-05 05:50:07,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "send-receive.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 05:50:07" (2/2) ... [2021-06-05 05:50:07,444 INFO L111 eAbstractionObserver]: Analyzing ICFG send-receive.wvr.bpl [2021-06-05 05:50:07,448 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-05 05:50:07,449 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-05 05:50:07,449 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-05 05:50:07,449 INFO L510 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-05 05:50:07,482 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-06-05 05:50:07,499 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-05 05:50:07,528 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 05:50:07,528 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 05:50:07,528 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 05:50:07,528 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 05:50:07,528 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 05:50:07,528 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 05:50:07,528 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 05:50:07,529 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-05 05:50:07,551 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 37 places, 30 transitions, 84 flow [2021-06-05 05:50:07,595 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 149 states, 147 states have (on average 2.7551020408163267) internal successors, (405), 148 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:07,598 INFO L276 IsEmpty]: Start isEmpty. Operand has 149 states, 147 states have (on average 2.7551020408163267) internal successors, (405), 148 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:07,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-05 05:50:07,612 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:50:07,612 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:50:07,613 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:50:07,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:50:07,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1918175453, now seen corresponding path program 1 times [2021-06-05 05:50:07,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:50:07,632 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043412122] [2021-06-05 05:50:07,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:50:07,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:50:07,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:50:07,756 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:50:07,757 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043412122] [2021-06-05 05:50:07,758 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043412122] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 05:50:07,758 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 05:50:07,759 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 05:50:07,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137639851] [2021-06-05 05:50:07,763 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 05:50:07,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:50:07,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 05:50:07,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 05:50:07,782 INFO L87 Difference]: Start difference. First operand has 149 states, 147 states have (on average 2.7551020408163267) internal successors, (405), 148 states have internal predecessors, (405), 0 states have call successors, (0), 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 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:07,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:50:07,839 INFO L93 Difference]: Finished difference Result 159 states and 404 transitions. [2021-06-05 05:50:07,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 05:50:07,840 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-06-05 05:50:07,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:50:07,848 INFO L225 Difference]: With dead ends: 159 [2021-06-05 05:50:07,849 INFO L226 Difference]: Without dead ends: 101 [2021-06-05 05:50:07,850 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 05:50:07,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-06-05 05:50:07,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2021-06-05 05:50:07,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 2.39) internal successors, (239), 100 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:07,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 239 transitions. [2021-06-05 05:50:07,912 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 239 transitions. Word has length 17 [2021-06-05 05:50:07,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:50:07,913 INFO L482 AbstractCegarLoop]: Abstraction has 101 states and 239 transitions. [2021-06-05 05:50:07,913 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:07,913 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 239 transitions. [2021-06-05 05:50:07,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-05 05:50:07,916 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:50:07,916 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:50:07,917 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-05 05:50:07,917 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:50:07,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:50:07,921 INFO L82 PathProgramCache]: Analyzing trace with hash -1722493283, now seen corresponding path program 2 times [2021-06-05 05:50:07,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:50:07,923 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705634298] [2021-06-05 05:50:07,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:50:07,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:50:07,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:50:07,992 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:50:07,992 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705634298] [2021-06-05 05:50:07,992 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705634298] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 05:50:07,993 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 05:50:07,993 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-05 05:50:07,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715564870] [2021-06-05 05:50:07,996 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-05 05:50:07,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:50:07,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-05 05:50:07,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-05 05:50:07,999 INFO L87 Difference]: Start difference. First operand 101 states and 239 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:08,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:50:08,047 INFO L93 Difference]: Finished difference Result 153 states and 362 transitions. [2021-06-05 05:50:08,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 05:50:08,048 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-06-05 05:50:08,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:50:08,051 INFO L225 Difference]: With dead ends: 153 [2021-06-05 05:50:08,052 INFO L226 Difference]: Without dead ends: 123 [2021-06-05 05:50:08,053 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-05 05:50:08,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-06-05 05:50:08,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2021-06-05 05:50:08,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 122 states have (on average 2.4344262295081966) internal successors, (297), 122 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:08,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 297 transitions. [2021-06-05 05:50:08,073 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 297 transitions. Word has length 17 [2021-06-05 05:50:08,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:50:08,073 INFO L482 AbstractCegarLoop]: Abstraction has 123 states and 297 transitions. [2021-06-05 05:50:08,073 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:08,073 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 297 transitions. [2021-06-05 05:50:08,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-06-05 05:50:08,078 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:50:08,078 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:50:08,079 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-05 05:50:08,079 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:50:08,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:50:08,080 INFO L82 PathProgramCache]: Analyzing trace with hash 1424318111, now seen corresponding path program 1 times [2021-06-05 05:50:08,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:50:08,081 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369592221] [2021-06-05 05:50:08,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:50:08,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:50:08,129 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:50:08,130 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:50:08,131 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369592221] [2021-06-05 05:50:08,131 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369592221] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 05:50:08,131 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 05:50:08,131 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-05 05:50:08,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994908721] [2021-06-05 05:50:08,132 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 05:50:08,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:50:08,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 05:50:08,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 05:50:08,134 INFO L87 Difference]: Start difference. First operand 123 states and 297 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:08,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:50:08,147 INFO L93 Difference]: Finished difference Result 137 states and 328 transitions. [2021-06-05 05:50:08,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 05:50:08,148 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-06-05 05:50:08,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:50:08,151 INFO L225 Difference]: With dead ends: 137 [2021-06-05 05:50:08,153 INFO L226 Difference]: Without dead ends: 137 [2021-06-05 05:50:08,154 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 05:50:08,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-06-05 05:50:08,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2021-06-05 05:50:08,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 136 states have (on average 2.411764705882353) internal successors, (328), 136 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:08,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 328 transitions. [2021-06-05 05:50:08,169 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 328 transitions. Word has length 19 [2021-06-05 05:50:08,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:50:08,169 INFO L482 AbstractCegarLoop]: Abstraction has 137 states and 328 transitions. [2021-06-05 05:50:08,170 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:08,170 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 328 transitions. [2021-06-05 05:50:08,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-06-05 05:50:08,170 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:50:08,170 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:50:08,170 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-05 05:50:08,171 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:50:08,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:50:08,171 INFO L82 PathProgramCache]: Analyzing trace with hash -1463492541, now seen corresponding path program 1 times [2021-06-05 05:50:08,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:50:08,171 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342119518] [2021-06-05 05:50:08,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:50:08,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:50:08,260 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:50:08,260 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:50:08,261 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342119518] [2021-06-05 05:50:08,261 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342119518] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:50:08,261 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [796571944] [2021-06-05 05:50:08,261 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 [2021-06-05 05:50:08,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:50:08,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 10 conjunts are in the unsatisfiable core [2021-06-05 05:50:08,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:50:08,500 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2021-06-05 05:50:08,504 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:50:08,509 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:50:08,511 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:50:08,511 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:7 [2021-06-05 05:50:08,563 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:50:08,564 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [796571944] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:50:08,564 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:50:08,564 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-06-05 05:50:08,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843426247] [2021-06-05 05:50:08,564 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 05:50:08,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:50:08,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 05:50:08,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-05 05:50:08,567 INFO L87 Difference]: Start difference. First operand 137 states and 328 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:08,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:50:08,676 INFO L93 Difference]: Finished difference Result 207 states and 501 transitions. [2021-06-05 05:50:08,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 05:50:08,676 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-06-05 05:50:08,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:50:08,678 INFO L225 Difference]: With dead ends: 207 [2021-06-05 05:50:08,678 INFO L226 Difference]: Without dead ends: 177 [2021-06-05 05:50:08,678 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 65.4ms TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-06-05 05:50:08,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-06-05 05:50:08,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 157. [2021-06-05 05:50:08,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 156 states have (on average 2.448717948717949) internal successors, (382), 156 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:08,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 382 transitions. [2021-06-05 05:50:08,685 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 382 transitions. Word has length 23 [2021-06-05 05:50:08,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:50:08,685 INFO L482 AbstractCegarLoop]: Abstraction has 157 states and 382 transitions. [2021-06-05 05:50:08,685 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:08,685 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 382 transitions. [2021-06-05 05:50:08,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-06-05 05:50:08,686 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:50:08,686 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:50:08,908 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:50:08,909 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:50:08,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:50:08,909 INFO L82 PathProgramCache]: Analyzing trace with hash 2032513123, now seen corresponding path program 1 times [2021-06-05 05:50:08,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:50:08,910 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037324079] [2021-06-05 05:50:08,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:50:08,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:50:08,929 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:50:08,929 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:50:08,930 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037324079] [2021-06-05 05:50:08,930 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037324079] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 05:50:08,930 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 05:50:08,930 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 05:50:08,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404616280] [2021-06-05 05:50:08,930 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 05:50:08,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:50:08,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 05:50:08,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 05:50:08,933 INFO L87 Difference]: Start difference. First operand 157 states and 382 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:08,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:50:08,943 INFO L93 Difference]: Finished difference Result 175 states and 425 transitions. [2021-06-05 05:50:08,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 05:50:08,943 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-06-05 05:50:08,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:50:08,944 INFO L225 Difference]: With dead ends: 175 [2021-06-05 05:50:08,944 INFO L226 Difference]: Without dead ends: 175 [2021-06-05 05:50:08,944 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 05:50:08,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-06-05 05:50:08,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 153. [2021-06-05 05:50:08,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 152 states have (on average 2.4342105263157894) internal successors, (370), 152 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:08,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 370 transitions. [2021-06-05 05:50:08,952 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 370 transitions. Word has length 23 [2021-06-05 05:50:08,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:50:08,952 INFO L482 AbstractCegarLoop]: Abstraction has 153 states and 370 transitions. [2021-06-05 05:50:08,952 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:08,952 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 370 transitions. [2021-06-05 05:50:08,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 05:50:08,953 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:50:08,953 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:50:08,953 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-05 05:50:08,954 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:50:08,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:50:08,954 INFO L82 PathProgramCache]: Analyzing trace with hash 113936453, now seen corresponding path program 2 times [2021-06-05 05:50:08,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:50:08,954 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884780051] [2021-06-05 05:50:08,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:50:08,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:50:08,997 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:50:08,997 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:50:08,997 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884780051] [2021-06-05 05:50:08,997 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884780051] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:50:08,998 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760010953] [2021-06-05 05:50:08,998 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:50:09,040 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 05:50:09,041 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:50:09,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 4 conjunts are in the unsatisfiable core [2021-06-05 05:50:09,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:50:09,108 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:50:09,108 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [760010953] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 05:50:09,109 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-06-05 05:50:09,109 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2021-06-05 05:50:09,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523890750] [2021-06-05 05:50:09,109 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-05 05:50:09,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:50:09,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-05 05:50:09,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-06-05 05:50:09,110 INFO L87 Difference]: Start difference. First operand 153 states and 370 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:09,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:50:09,123 INFO L93 Difference]: Finished difference Result 401 states and 958 transitions. [2021-06-05 05:50:09,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-05 05:50:09,124 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 05:50:09,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:50:09,126 INFO L225 Difference]: With dead ends: 401 [2021-06-05 05:50:09,126 INFO L226 Difference]: Without dead ends: 393 [2021-06-05 05:50:09,126 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.7ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-06-05 05:50:09,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2021-06-05 05:50:09,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 259. [2021-06-05 05:50:09,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 258 states have (on average 2.5155038759689923) internal successors, (649), 258 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:09,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 649 transitions. [2021-06-05 05:50:09,143 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 649 transitions. Word has length 25 [2021-06-05 05:50:09,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:50:09,143 INFO L482 AbstractCegarLoop]: Abstraction has 259 states and 649 transitions. [2021-06-05 05:50:09,143 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:09,143 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 649 transitions. [2021-06-05 05:50:09,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-06-05 05:50:09,144 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:50:09,145 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:50:09,345 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:50:09,345 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:50:09,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:50:09,346 INFO L82 PathProgramCache]: Analyzing trace with hash -432740959, now seen corresponding path program 3 times [2021-06-05 05:50:09,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:50:09,346 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599917840] [2021-06-05 05:50:09,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:50:09,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:50:09,368 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:50:09,368 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:50:09,368 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599917840] [2021-06-05 05:50:09,368 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599917840] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:50:09,368 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [258175626] [2021-06-05 05:50:09,369 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:50:09,409 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 05:50:09,409 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:50:09,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjunts are in the unsatisfiable core [2021-06-05 05:50:09,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:50:09,466 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:50:09,467 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [258175626] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:50:09,467 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:50:09,467 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-06-05 05:50:09,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160688202] [2021-06-05 05:50:09,468 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-05 05:50:09,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:50:09,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-05 05:50:09,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-05 05:50:09,468 INFO L87 Difference]: Start difference. First operand 259 states and 649 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:09,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:50:09,481 INFO L93 Difference]: Finished difference Result 363 states and 850 transitions. [2021-06-05 05:50:09,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-05 05:50:09,482 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-06-05 05:50:09,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:50:09,484 INFO L225 Difference]: With dead ends: 363 [2021-06-05 05:50:09,484 INFO L226 Difference]: Without dead ends: 363 [2021-06-05 05:50:09,485 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.6ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-05 05:50:09,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2021-06-05 05:50:09,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 319. [2021-06-05 05:50:09,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 318 states have (on average 2.39937106918239) internal successors, (763), 318 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:09,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 763 transitions. [2021-06-05 05:50:09,502 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 763 transitions. Word has length 29 [2021-06-05 05:50:09,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:50:09,503 INFO L482 AbstractCegarLoop]: Abstraction has 319 states and 763 transitions. [2021-06-05 05:50:09,503 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:09,503 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 763 transitions. [2021-06-05 05:50:09,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-06-05 05:50:09,505 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:50:09,506 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:50:09,728 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:50:09,728 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:50:09,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:50:09,729 INFO L82 PathProgramCache]: Analyzing trace with hash -1231702591, now seen corresponding path program 1 times [2021-06-05 05:50:09,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:50:09,729 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882894556] [2021-06-05 05:50:09,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:50:09,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:50:09,889 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:50:09,889 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:50:09,889 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882894556] [2021-06-05 05:50:09,889 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882894556] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:50:09,889 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231173442] [2021-06-05 05:50:09,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:50:09,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:50:09,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 18 conjunts are in the unsatisfiable core [2021-06-05 05:50:09,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:50:10,153 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:50:10,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:10,154 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-06-05 05:50:10,158 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:50:10,165 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:50:10,171 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:50:10,171 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:43, output treesize:7 [2021-06-05 05:50:10,193 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:50:10,193 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1231173442] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:50:10,193 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:50:10,194 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2021-06-05 05:50:10,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975871931] [2021-06-05 05:50:10,195 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 05:50:10,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:50:10,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 05:50:10,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-06-05 05:50:10,196 INFO L87 Difference]: Start difference. First operand 319 states and 763 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:10,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:50:10,379 INFO L93 Difference]: Finished difference Result 455 states and 1091 transitions. [2021-06-05 05:50:10,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 05:50:10,380 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 10 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 29 [2021-06-05 05:50:10,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:50:10,382 INFO L225 Difference]: With dead ends: 455 [2021-06-05 05:50:10,382 INFO L226 Difference]: Without dead ends: 415 [2021-06-05 05:50:10,383 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 207.8ms TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2021-06-05 05:50:10,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2021-06-05 05:50:10,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 351. [2021-06-05 05:50:10,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 350 states have (on average 2.3857142857142857) internal successors, (835), 350 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:10,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 835 transitions. [2021-06-05 05:50:10,394 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 835 transitions. Word has length 29 [2021-06-05 05:50:10,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:50:10,395 INFO L482 AbstractCegarLoop]: Abstraction has 351 states and 835 transitions. [2021-06-05 05:50:10,395 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:10,395 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 835 transitions. [2021-06-05 05:50:10,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-06-05 05:50:10,396 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:50:10,396 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:50:10,609 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:50:10,609 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:50:10,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:50:10,609 INFO L82 PathProgramCache]: Analyzing trace with hash 1556600769, now seen corresponding path program 2 times [2021-06-05 05:50:10,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:50:10,610 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149064032] [2021-06-05 05:50:10,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:50:10,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:50:10,738 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:50:10,739 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:50:10,739 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149064032] [2021-06-05 05:50:10,739 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149064032] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:50:10,739 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175853789] [2021-06-05 05:50:10,739 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:50:10,774 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 05:50:10,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:50:10,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 18 conjunts are in the unsatisfiable core [2021-06-05 05:50:10,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:50:10,880 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-06-05 05:50:10,880 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 19 [2021-06-05 05:50:10,883 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:50:10,886 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:50:10,887 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:50:10,887 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:37, output treesize:7 [2021-06-05 05:50:10,904 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:50:10,905 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175853789] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:50:10,905 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:50:10,905 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2021-06-05 05:50:10,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024738652] [2021-06-05 05:50:10,905 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 05:50:10,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:50:10,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 05:50:10,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-06-05 05:50:10,906 INFO L87 Difference]: Start difference. First operand 351 states and 835 transitions. Second operand has 10 states, 10 states have (on average 3.2) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:11,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:50:11,055 INFO L93 Difference]: Finished difference Result 483 states and 1151 transitions. [2021-06-05 05:50:11,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-05 05:50:11,056 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.2) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-06-05 05:50:11,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:50:11,058 INFO L225 Difference]: With dead ends: 483 [2021-06-05 05:50:11,058 INFO L226 Difference]: Without dead ends: 447 [2021-06-05 05:50:11,058 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 25 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 158.6ms TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-06-05 05:50:11,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2021-06-05 05:50:11,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 383. [2021-06-05 05:50:11,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 2.3952879581151834) internal successors, (915), 382 states have internal predecessors, (915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:11,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 915 transitions. [2021-06-05 05:50:11,088 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 915 transitions. Word has length 29 [2021-06-05 05:50:11,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:50:11,088 INFO L482 AbstractCegarLoop]: Abstraction has 383 states and 915 transitions. [2021-06-05 05:50:11,088 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.2) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:11,088 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 915 transitions. [2021-06-05 05:50:11,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-06-05 05:50:11,089 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:50:11,089 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:50:11,290 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:50:11,290 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:50:11,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:50:11,290 INFO L82 PathProgramCache]: Analyzing trace with hash -974284733, now seen corresponding path program 3 times [2021-06-05 05:50:11,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:50:11,291 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79732406] [2021-06-05 05:50:11,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:50:11,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:50:11,327 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:50:11,327 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:50:11,328 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79732406] [2021-06-05 05:50:11,328 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79732406] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:50:11,328 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837209368] [2021-06-05 05:50:11,328 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:50:11,364 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-05 05:50:11,365 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:50:11,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 6 conjunts are in the unsatisfiable core [2021-06-05 05:50:11,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:50:11,428 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:50:11,428 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [837209368] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:50:11,428 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:50:11,429 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 5 [2021-06-05 05:50:11,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123783766] [2021-06-05 05:50:11,431 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 05:50:11,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:50:11,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 05:50:11,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-06-05 05:50:11,432 INFO L87 Difference]: Start difference. First operand 383 states and 915 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:11,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:50:11,455 INFO L93 Difference]: Finished difference Result 827 states and 1940 transitions. [2021-06-05 05:50:11,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 05:50:11,455 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-06-05 05:50:11,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:50:11,459 INFO L225 Difference]: With dead ends: 827 [2021-06-05 05:50:11,459 INFO L226 Difference]: Without dead ends: 819 [2021-06-05 05:50:11,459 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 14.3ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-06-05 05:50:11,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2021-06-05 05:50:11,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 463. [2021-06-05 05:50:11,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 462 states have (on average 2.448051948051948) internal successors, (1131), 462 states have internal predecessors, (1131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:11,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 1131 transitions. [2021-06-05 05:50:11,473 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 1131 transitions. Word has length 31 [2021-06-05 05:50:11,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:50:11,474 INFO L482 AbstractCegarLoop]: Abstraction has 463 states and 1131 transitions. [2021-06-05 05:50:11,474 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:11,474 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 1131 transitions. [2021-06-05 05:50:11,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-06-05 05:50:11,475 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:50:11,475 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:50:11,697 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:50:11,697 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:50:11,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:50:11,697 INFO L82 PathProgramCache]: Analyzing trace with hash -257743713, now seen corresponding path program 4 times [2021-06-05 05:50:11,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:50:11,698 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047591459] [2021-06-05 05:50:11,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:50:11,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:50:11,935 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:50:11,935 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:50:11,935 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047591459] [2021-06-05 05:50:11,935 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047591459] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:50:11,935 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112214326] [2021-06-05 05:50:11,935 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 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:50:11,971 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 05:50:11,972 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:50:11,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 05:50:11,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:50:12,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:12,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:12,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:12,178 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:50:12,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:12,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:12,180 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:50:12,181 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 24 [2021-06-05 05:50:12,183 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:50:12,189 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:50:12,190 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:50:12,190 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:60, output treesize:7 [2021-06-05 05:50:12,204 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:50:12,204 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1112214326] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:50:12,204 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:50:12,204 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-06-05 05:50:12,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863626694] [2021-06-05 05:50:12,205 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 05:50:12,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:50:12,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 05:50:12,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2021-06-05 05:50:12,205 INFO L87 Difference]: Start difference. First operand 463 states and 1131 transitions. Second operand has 15 states, 15 states have (on average 3.2) internal successors, (48), 14 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:12,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:50:12,524 INFO L93 Difference]: Finished difference Result 851 states and 2063 transitions. [2021-06-05 05:50:12,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-05 05:50:12,524 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.2) internal successors, (48), 14 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-06-05 05:50:12,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:50:12,529 INFO L225 Difference]: With dead ends: 851 [2021-06-05 05:50:12,529 INFO L226 Difference]: Without dead ends: 735 [2021-06-05 05:50:12,530 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 382.3ms TimeCoverageRelationStatistics Valid=106, Invalid=446, Unknown=0, NotChecked=0, Total=552 [2021-06-05 05:50:12,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2021-06-05 05:50:12,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 591. [2021-06-05 05:50:12,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 591 states, 590 states have (on average 2.4322033898305087) internal successors, (1435), 590 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) [2021-06-05 05:50:12,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 1435 transitions. [2021-06-05 05:50:12,547 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 1435 transitions. Word has length 35 [2021-06-05 05:50:12,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:50:12,547 INFO L482 AbstractCegarLoop]: Abstraction has 591 states and 1435 transitions. [2021-06-05 05:50:12,547 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 3.2) internal successors, (48), 14 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:12,547 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 1435 transitions. [2021-06-05 05:50:12,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-06-05 05:50:12,549 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:50:12,549 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:50:12,773 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:50:12,773 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:50:12,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:50:12,773 INFO L82 PathProgramCache]: Analyzing trace with hash 734580383, now seen corresponding path program 5 times [2021-06-05 05:50:12,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:50:12,773 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043237043] [2021-06-05 05:50:12,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:50:12,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:50:12,937 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:50:12,937 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:50:12,938 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043237043] [2021-06-05 05:50:12,938 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043237043] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:50:12,938 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1081042003] [2021-06-05 05:50:12,938 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 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:50:12,979 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-05 05:50:12,979 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:50:12,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 05:50:12,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:50:13,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:13,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:13,204 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:50:13,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:13,205 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:50:13,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:13,207 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 24 [2021-06-05 05:50:13,208 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:50:13,214 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:50:13,216 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:50:13,216 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:60, output treesize:7 [2021-06-05 05:50:13,228 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:50:13,229 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1081042003] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:50:13,229 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:50:13,229 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-06-05 05:50:13,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98249798] [2021-06-05 05:50:13,230 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 05:50:13,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:50:13,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 05:50:13,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2021-06-05 05:50:13,230 INFO L87 Difference]: Start difference. First operand 591 states and 1435 transitions. Second operand has 15 states, 15 states have (on average 3.2) internal successors, (48), 14 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:13,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:50:13,498 INFO L93 Difference]: Finished difference Result 1023 states and 2527 transitions. [2021-06-05 05:50:13,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 05:50:13,499 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.2) internal successors, (48), 14 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-06-05 05:50:13,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:50:13,502 INFO L225 Difference]: With dead ends: 1023 [2021-06-05 05:50:13,502 INFO L226 Difference]: Without dead ends: 959 [2021-06-05 05:50:13,503 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 309.0ms TimeCoverageRelationStatistics Valid=87, Invalid=419, Unknown=0, NotChecked=0, Total=506 [2021-06-05 05:50:13,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2021-06-05 05:50:13,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 607. [2021-06-05 05:50:13,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 606 states have (on average 2.433993399339934) internal successors, (1475), 606 states have internal predecessors, (1475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:13,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 1475 transitions. [2021-06-05 05:50:13,517 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 1475 transitions. Word has length 35 [2021-06-05 05:50:13,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:50:13,518 INFO L482 AbstractCegarLoop]: Abstraction has 607 states and 1475 transitions. [2021-06-05 05:50:13,518 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 3.2) internal successors, (48), 14 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:13,518 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 1475 transitions. [2021-06-05 05:50:13,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-06-05 05:50:13,519 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:50:13,519 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:50:13,742 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-06-05 05:50:13,743 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:50:13,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:50:13,743 INFO L82 PathProgramCache]: Analyzing trace with hash 1026803359, now seen corresponding path program 6 times [2021-06-05 05:50:13,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:50:13,743 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046465346] [2021-06-05 05:50:13,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:50:13,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:50:13,917 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:50:13,917 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:50:13,917 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046465346] [2021-06-05 05:50:13,918 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046465346] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:50:13,918 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132134684] [2021-06-05 05:50:13,918 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 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:50:13,946 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 05:50:13,946 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:50:13,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 05:50:13,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:50:14,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:14,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:14,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:14,103 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:50:14,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:14,105 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 24 [2021-06-05 05:50:14,106 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:50:14,112 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:50:14,114 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:50:14,114 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:60, output treesize:7 [2021-06-05 05:50:14,127 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:50:14,127 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [132134684] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:50:14,127 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:50:14,127 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 13 [2021-06-05 05:50:14,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177990627] [2021-06-05 05:50:14,128 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 05:50:14,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:50:14,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 05:50:14,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-06-05 05:50:14,129 INFO L87 Difference]: Start difference. First operand 607 states and 1475 transitions. Second operand has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:14,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:50:14,544 INFO L93 Difference]: Finished difference Result 1319 states and 3177 transitions. [2021-06-05 05:50:14,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-05 05:50:14,545 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-06-05 05:50:14,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:50:14,549 INFO L225 Difference]: With dead ends: 1319 [2021-06-05 05:50:14,549 INFO L226 Difference]: Without dead ends: 1103 [2021-06-05 05:50:14,550 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 29 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 364.4ms TimeCoverageRelationStatistics Valid=124, Invalid=526, Unknown=0, NotChecked=0, Total=650 [2021-06-05 05:50:14,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1103 states. [2021-06-05 05:50:14,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1103 to 671. [2021-06-05 05:50:14,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 671 states, 670 states have (on average 2.428358208955224) internal successors, (1627), 670 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:14,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 1627 transitions. [2021-06-05 05:50:14,566 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 1627 transitions. Word has length 35 [2021-06-05 05:50:14,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:50:14,566 INFO L482 AbstractCegarLoop]: Abstraction has 671 states and 1627 transitions. [2021-06-05 05:50:14,566 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:14,566 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 1627 transitions. [2021-06-05 05:50:14,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-06-05 05:50:14,567 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:50:14,567 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:50:14,780 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:50:14,781 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:50:14,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:50:14,781 INFO L82 PathProgramCache]: Analyzing trace with hash 2019127455, now seen corresponding path program 7 times [2021-06-05 05:50:14,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:50:14,782 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952097521] [2021-06-05 05:50:14,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:50:14,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:50:14,904 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:50:14,904 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:50:14,904 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952097521] [2021-06-05 05:50:14,904 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952097521] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:50:14,904 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [641502152] [2021-06-05 05:50:14,904 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 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:50:14,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:50:14,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 05:50:14,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:50:15,117 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:50:15,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:15,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:15,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:15,120 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 24 [2021-06-05 05:50:15,122 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:50:15,127 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:50:15,129 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:50:15,129 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:60, output treesize:7 [2021-06-05 05:50:15,141 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:50:15,142 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [641502152] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:50:15,142 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:50:15,142 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 13 [2021-06-05 05:50:15,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888332910] [2021-06-05 05:50:15,142 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 05:50:15,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:50:15,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 05:50:15,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-06-05 05:50:15,143 INFO L87 Difference]: Start difference. First operand 671 states and 1627 transitions. Second operand has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:15,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:50:15,501 INFO L93 Difference]: Finished difference Result 1239 states and 3075 transitions. [2021-06-05 05:50:15,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 05:50:15,502 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-06-05 05:50:15,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:50:15,506 INFO L225 Difference]: With dead ends: 1239 [2021-06-05 05:50:15,507 INFO L226 Difference]: Without dead ends: 1151 [2021-06-05 05:50:15,507 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 29 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 311.6ms TimeCoverageRelationStatistics Valid=100, Invalid=500, Unknown=0, NotChecked=0, Total=600 [2021-06-05 05:50:15,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1151 states. [2021-06-05 05:50:15,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1151 to 543. [2021-06-05 05:50:15,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 542 states have (on average 2.440959409594096) internal successors, (1323), 542 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:15,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 1323 transitions. [2021-06-05 05:50:15,523 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 1323 transitions. Word has length 35 [2021-06-05 05:50:15,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:50:15,524 INFO L482 AbstractCegarLoop]: Abstraction has 543 states and 1323 transitions. [2021-06-05 05:50:15,524 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:15,524 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 1323 transitions. [2021-06-05 05:50:15,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-06-05 05:50:15,525 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:50:15,525 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:50:15,744 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:50:15,745 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:50:15,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:50:15,745 INFO L82 PathProgramCache]: Analyzing trace with hash -2135123297, now seen corresponding path program 8 times [2021-06-05 05:50:15,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:50:15,745 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149585380] [2021-06-05 05:50:15,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:50:15,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:50:15,869 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:50:15,869 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:50:15,869 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149585380] [2021-06-05 05:50:15,869 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149585380] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:50:15,869 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754889321] [2021-06-05 05:50:15,869 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 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:50:15,898 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 05:50:15,899 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:50:15,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 05:50:15,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:50:16,015 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-06-05 05:50:16,016 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 24 [2021-06-05 05:50:16,017 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:50:16,020 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:50:16,021 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:50:16,021 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:54, output treesize:7 [2021-06-05 05:50:16,033 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:50:16,033 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754889321] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:50:16,033 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:50:16,033 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2021-06-05 05:50:16,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665288376] [2021-06-05 05:50:16,034 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 05:50:16,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:50:16,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 05:50:16,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-06-05 05:50:16,034 INFO L87 Difference]: Start difference. First operand 543 states and 1323 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:16,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:50:16,292 INFO L93 Difference]: Finished difference Result 787 states and 1911 transitions. [2021-06-05 05:50:16,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 05:50:16,292 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-06-05 05:50:16,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:50:16,295 INFO L225 Difference]: With dead ends: 787 [2021-06-05 05:50:16,295 INFO L226 Difference]: Without dead ends: 751 [2021-06-05 05:50:16,296 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 29 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 229.9ms TimeCoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2021-06-05 05:50:16,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 751 states. [2021-06-05 05:50:16,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 751 to 575. [2021-06-05 05:50:16,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 574 states have (on average 2.4442508710801394) internal successors, (1403), 574 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) [2021-06-05 05:50:16,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 1403 transitions. [2021-06-05 05:50:16,308 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 1403 transitions. Word has length 35 [2021-06-05 05:50:16,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:50:16,308 INFO L482 AbstractCegarLoop]: Abstraction has 575 states and 1403 transitions. [2021-06-05 05:50:16,308 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:16,308 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 1403 transitions. [2021-06-05 05:50:16,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-06-05 05:50:16,309 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:50:16,309 INFO L521 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:50:16,524 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-06-05 05:50:16,525 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:50:16,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:50:16,525 INFO L82 PathProgramCache]: Analyzing trace with hash -1078125663, now seen corresponding path program 9 times [2021-06-05 05:50:16,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:50:16,525 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616965564] [2021-06-05 05:50:16,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:50:16,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:50:16,559 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 16 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:50:16,560 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:50:16,560 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616965564] [2021-06-05 05:50:16,560 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616965564] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:50:16,560 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1814232021] [2021-06-05 05:50:16,560 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 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:50:16,592 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-06-05 05:50:16,592 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:50:16,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 05:50:16,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:50:16,656 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 16 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:50:16,657 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1814232021] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:50:16,657 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:50:16,657 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 6 [2021-06-05 05:50:16,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534557733] [2021-06-05 05:50:16,657 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 05:50:16,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:50:16,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 05:50:16,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-06-05 05:50:16,658 INFO L87 Difference]: Start difference. First operand 575 states and 1403 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:16,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:50:16,687 INFO L93 Difference]: Finished difference Result 1199 states and 2863 transitions. [2021-06-05 05:50:16,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-05 05:50:16,687 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-06-05 05:50:16,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:50:16,692 INFO L225 Difference]: With dead ends: 1199 [2021-06-05 05:50:16,692 INFO L226 Difference]: Without dead ends: 1191 [2021-06-05 05:50:16,692 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 15.0ms TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-06-05 05:50:16,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1191 states. [2021-06-05 05:50:16,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1191 to 671. [2021-06-05 05:50:16,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 671 states, 670 states have (on average 2.476119402985075) internal successors, (1659), 670 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:16,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 1659 transitions. [2021-06-05 05:50:16,722 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 1659 transitions. Word has length 37 [2021-06-05 05:50:16,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:50:16,722 INFO L482 AbstractCegarLoop]: Abstraction has 671 states and 1659 transitions. [2021-06-05 05:50:16,722 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:16,722 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 1659 transitions. [2021-06-05 05:50:16,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-06-05 05:50:16,723 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:50:16,723 INFO L521 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:50:16,941 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-06-05 05:50:16,941 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:50:16,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:50:16,942 INFO L82 PathProgramCache]: Analyzing trace with hash -1188270307, now seen corresponding path program 10 times [2021-06-05 05:50:16,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:50:16,942 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138711081] [2021-06-05 05:50:16,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:50:16,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:50:17,147 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 4 proven. 35 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:50:17,147 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:50:17,148 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138711081] [2021-06-05 05:50:17,148 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138711081] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:50:17,148 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1293610261] [2021-06-05 05:50:17,148 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 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:50:17,182 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 05:50:17,182 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:50:17,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 34 conjunts are in the unsatisfiable core [2021-06-05 05:50:17,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:50:17,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:17,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:17,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:17,437 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:50:17,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:17,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:17,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:17,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:17,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:17,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:17,443 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:50:17,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:17,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:17,446 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:50:17,447 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 6 disjoint index pairs (out of 21 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 31 [2021-06-05 05:50:17,448 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:50:17,453 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:50:17,454 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:50:17,454 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:79, output treesize:7 [2021-06-05 05:50:17,465 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 9 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:50:17,465 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1293610261] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:50:17,465 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:50:17,466 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 17 [2021-06-05 05:50:17,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901515896] [2021-06-05 05:50:17,467 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 05:50:17,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:50:17,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 05:50:17,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2021-06-05 05:50:17,468 INFO L87 Difference]: Start difference. First operand 671 states and 1659 transitions. Second operand has 18 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 17 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:17,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:50:17,969 INFO L93 Difference]: Finished difference Result 1511 states and 3681 transitions. [2021-06-05 05:50:17,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-05 05:50:17,969 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 17 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-06-05 05:50:17,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:50:17,974 INFO L225 Difference]: With dead ends: 1511 [2021-06-05 05:50:17,974 INFO L226 Difference]: Without dead ends: 1295 [2021-06-05 05:50:17,975 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 506.0ms TimeCoverageRelationStatistics Valid=151, Invalid=719, Unknown=0, NotChecked=0, Total=870 [2021-06-05 05:50:17,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1295 states. [2021-06-05 05:50:17,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1295 to 895. [2021-06-05 05:50:17,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 895 states, 894 states have (on average 2.446308724832215) internal successors, (2187), 894 states have internal predecessors, (2187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:17,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 2187 transitions. [2021-06-05 05:50:17,998 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 2187 transitions. Word has length 41 [2021-06-05 05:50:17,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:50:17,999 INFO L482 AbstractCegarLoop]: Abstraction has 895 states and 2187 transitions. [2021-06-05 05:50:17,999 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 17 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:17,999 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 2187 transitions. [2021-06-05 05:50:18,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-06-05 05:50:18,000 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:50:18,000 INFO L521 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:50:18,224 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-06-05 05:50:18,225 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:50:18,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:50:18,225 INFO L82 PathProgramCache]: Analyzing trace with hash 1600033053, now seen corresponding path program 11 times [2021-06-05 05:50:18,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:50:18,225 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369874406] [2021-06-05 05:50:18,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:50:18,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:50:18,390 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 4 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:50:18,390 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:50:18,391 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369874406] [2021-06-05 05:50:18,391 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369874406] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:50:18,391 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1663838632] [2021-06-05 05:50:18,391 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 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:50:18,421 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-06-05 05:50:18,421 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:50:18,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 34 conjunts are in the unsatisfiable core [2021-06-05 05:50:18,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:50:18,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:18,697 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:50:18,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:18,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:18,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:18,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:18,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:18,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:18,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:18,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:18,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:18,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:18,705 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:50:18,706 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:50:18,706 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 6 disjoint index pairs (out of 21 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 31 [2021-06-05 05:50:18,709 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:50:18,714 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:50:18,715 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:50:18,715 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:79, output treesize:7 [2021-06-05 05:50:18,729 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 4 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:50:18,729 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1663838632] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:50:18,729 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:50:18,729 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 17 [2021-06-05 05:50:18,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879638505] [2021-06-05 05:50:18,729 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 05:50:18,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:50:18,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 05:50:18,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2021-06-05 05:50:18,732 INFO L87 Difference]: Start difference. First operand 895 states and 2187 transitions. Second operand has 18 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 17 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:19,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:50:19,116 INFO L93 Difference]: Finished difference Result 1927 states and 4811 transitions. [2021-06-05 05:50:19,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 05:50:19,116 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 17 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-06-05 05:50:19,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:50:19,124 INFO L225 Difference]: With dead ends: 1927 [2021-06-05 05:50:19,124 INFO L226 Difference]: Without dead ends: 1839 [2021-06-05 05:50:19,124 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 410.1ms TimeCoverageRelationStatistics Valid=120, Invalid=692, Unknown=0, NotChecked=0, Total=812 [2021-06-05 05:50:19,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1839 states. [2021-06-05 05:50:19,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1839 to 991. [2021-06-05 05:50:19,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 991 states, 990 states have (on average 2.4434343434343435) internal successors, (2419), 990 states have internal predecessors, (2419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:19,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 2419 transitions. [2021-06-05 05:50:19,146 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 2419 transitions. Word has length 41 [2021-06-05 05:50:19,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:50:19,146 INFO L482 AbstractCegarLoop]: Abstraction has 991 states and 2419 transitions. [2021-06-05 05:50:19,146 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 17 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:19,146 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 2419 transitions. [2021-06-05 05:50:19,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-06-05 05:50:19,148 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:50:19,148 INFO L521 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:50:19,370 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:50:19,371 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:50:19,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:50:19,371 INFO L82 PathProgramCache]: Analyzing trace with hash 1099969309, now seen corresponding path program 12 times [2021-06-05 05:50:19,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:50:19,371 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364736395] [2021-06-05 05:50:19,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:50:19,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:50:19,566 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 4 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:50:19,566 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:50:19,566 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364736395] [2021-06-05 05:50:19,567 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364736395] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:50:19,567 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371654419] [2021-06-05 05:50:19,567 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 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:50:19,601 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-06-05 05:50:19,602 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:50:19,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 35 conjunts are in the unsatisfiable core [2021-06-05 05:50:19,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:50:19,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:19,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:19,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:19,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:19,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:19,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:19,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:19,948 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:50:19,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:19,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:19,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:19,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:19,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:19,953 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:50:19,953 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:50:19,956 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 6 disjoint index pairs (out of 21 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 31 [2021-06-05 05:50:19,959 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:50:19,974 INFO L628 ElimStorePlain]: treesize reduction 5, result has 81.5 percent of original size [2021-06-05 05:50:19,976 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:50:19,976 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:89, output treesize:7 [2021-06-05 05:50:19,987 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 4 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:50:19,987 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1371654419] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:50:19,988 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:50:19,988 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 18 [2021-06-05 05:50:19,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945483266] [2021-06-05 05:50:19,989 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 05:50:19,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:50:19,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 05:50:19,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2021-06-05 05:50:19,990 INFO L87 Difference]: Start difference. First operand 991 states and 2419 transitions. Second operand has 19 states, 19 states have (on average 3.1578947368421053) internal successors, (60), 18 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:20,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:50:20,723 INFO L93 Difference]: Finished difference Result 2259 states and 5553 transitions. [2021-06-05 05:50:20,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-05 05:50:20,724 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.1578947368421053) internal successors, (60), 18 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-06-05 05:50:20,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:50:20,731 INFO L225 Difference]: With dead ends: 2259 [2021-06-05 05:50:20,731 INFO L226 Difference]: Without dead ends: 2015 [2021-06-05 05:50:20,731 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 527.0ms TimeCoverageRelationStatistics Valid=136, Invalid=856, Unknown=0, NotChecked=0, Total=992 [2021-06-05 05:50:20,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2015 states. [2021-06-05 05:50:20,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2015 to 1023. [2021-06-05 05:50:20,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1023 states, 1022 states have (on average 2.4452054794520546) internal successors, (2499), 1022 states have internal predecessors, (2499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:20,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 2499 transitions. [2021-06-05 05:50:20,755 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 2499 transitions. Word has length 41 [2021-06-05 05:50:20,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:50:20,755 INFO L482 AbstractCegarLoop]: Abstraction has 1023 states and 2499 transitions. [2021-06-05 05:50:20,756 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 3.1578947368421053) internal successors, (60), 18 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:20,756 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 2499 transitions. [2021-06-05 05:50:20,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-06-05 05:50:20,757 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:50:20,757 INFO L521 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:50:20,979 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:50:20,980 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:50:20,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:50:20,980 INFO L82 PathProgramCache]: Analyzing trace with hash 188453149, now seen corresponding path program 13 times [2021-06-05 05:50:20,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:50:20,980 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240015747] [2021-06-05 05:50:20,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:50:20,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:50:21,174 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 4 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:50:21,175 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:50:21,175 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240015747] [2021-06-05 05:50:21,175 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240015747] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:50:21,175 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805012707] [2021-06-05 05:50:21,175 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 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:50:21,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:50:21,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 34 conjunts are in the unsatisfiable core [2021-06-05 05:50:21,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:50:21,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:21,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:21,448 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:50:21,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:21,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:21,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:21,451 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:50:21,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:21,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:21,454 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 31 [2021-06-05 05:50:21,455 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:50:21,461 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:50:21,462 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:50:21,462 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:79, output treesize:7 [2021-06-05 05:50:21,474 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 4 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:50:21,474 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1805012707] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:50:21,474 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:50:21,474 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 16 [2021-06-05 05:50:21,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392291196] [2021-06-05 05:50:21,475 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 05:50:21,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:50:21,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 05:50:21,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2021-06-05 05:50:21,475 INFO L87 Difference]: Start difference. First operand 1023 states and 2499 transitions. Second operand has 17 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 16 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:22,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:50:22,088 INFO L93 Difference]: Finished difference Result 2651 states and 6394 transitions. [2021-06-05 05:50:22,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-05 05:50:22,088 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 16 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-06-05 05:50:22,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:50:22,094 INFO L225 Difference]: With dead ends: 2651 [2021-06-05 05:50:22,094 INFO L226 Difference]: Without dead ends: 2391 [2021-06-05 05:50:22,094 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 34 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 571.7ms TimeCoverageRelationStatistics Valid=170, Invalid=886, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 05:50:22,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2391 states. [2021-06-05 05:50:22,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2391 to 1391. [2021-06-05 05:50:22,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1391 states, 1390 states have (on average 2.4294964028776977) internal successors, (3377), 1390 states have internal predecessors, (3377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:22,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1391 states to 1391 states and 3377 transitions. [2021-06-05 05:50:22,125 INFO L78 Accepts]: Start accepts. Automaton has 1391 states and 3377 transitions. Word has length 41 [2021-06-05 05:50:22,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:50:22,125 INFO L482 AbstractCegarLoop]: Abstraction has 1391 states and 3377 transitions. [2021-06-05 05:50:22,125 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 16 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:22,125 INFO L276 IsEmpty]: Start isEmpty. Operand 1391 states and 3377 transitions. [2021-06-05 05:50:22,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-06-05 05:50:22,127 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:50:22,127 INFO L521 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:50:22,348 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:50:22,349 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:50:22,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:50:22,349 INFO L82 PathProgramCache]: Analyzing trace with hash -1818274531, now seen corresponding path program 14 times [2021-06-05 05:50:22,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:50:22,349 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606503960] [2021-06-05 05:50:22,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:50:22,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:50:22,513 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 4 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:50:22,513 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:50:22,513 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606503960] [2021-06-05 05:50:22,513 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606503960] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:50:22,513 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587170061] [2021-06-05 05:50:22,514 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 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:50:22,545 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 05:50:22,545 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:50:22,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 34 conjunts are in the unsatisfiable core [2021-06-05 05:50:22,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:50:22,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:22,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:22,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:22,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:22,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:22,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:22,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:22,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:22,787 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:50:22,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:22,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:22,788 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:50:22,790 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 31 [2021-06-05 05:50:22,792 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:50:22,796 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:50:22,797 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:50:22,798 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:79, output treesize:7 [2021-06-05 05:50:22,808 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 4 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:50:22,809 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [587170061] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:50:22,809 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:50:22,809 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 17 [2021-06-05 05:50:22,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141834011] [2021-06-05 05:50:22,809 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 05:50:22,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:50:22,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 05:50:22,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2021-06-05 05:50:22,810 INFO L87 Difference]: Start difference. First operand 1391 states and 3377 transitions. Second operand has 18 states, 18 states have (on average 3.111111111111111) internal successors, (56), 17 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:23,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:50:23,288 INFO L93 Difference]: Finished difference Result 2655 states and 6510 transitions. [2021-06-05 05:50:23,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-05 05:50:23,288 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.111111111111111) internal successors, (56), 17 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-06-05 05:50:23,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:50:23,297 INFO L225 Difference]: With dead ends: 2655 [2021-06-05 05:50:23,297 INFO L226 Difference]: Without dead ends: 2567 [2021-06-05 05:50:23,298 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 408.8ms TimeCoverageRelationStatistics Valid=126, Invalid=744, Unknown=0, NotChecked=0, Total=870 [2021-06-05 05:50:23,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2567 states. [2021-06-05 05:50:23,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2567 to 1567. [2021-06-05 05:50:23,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1567 states, 1566 states have (on average 2.4272030651340994) internal successors, (3801), 1566 states have internal predecessors, (3801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:23,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 3801 transitions. [2021-06-05 05:50:23,330 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 3801 transitions. Word has length 41 [2021-06-05 05:50:23,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:50:23,330 INFO L482 AbstractCegarLoop]: Abstraction has 1567 states and 3801 transitions. [2021-06-05 05:50:23,331 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 3.111111111111111) internal successors, (56), 17 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:23,331 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 3801 transitions. [2021-06-05 05:50:23,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-06-05 05:50:23,333 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:50:23,333 INFO L521 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:50:23,555 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-06-05 05:50:23,556 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:50:23,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:50:23,556 INFO L82 PathProgramCache]: Analyzing trace with hash -1021887715, now seen corresponding path program 15 times [2021-06-05 05:50:23,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:50:23,556 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974030592] [2021-06-05 05:50:23,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:50:23,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:50:23,737 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 4 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:50:23,737 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:50:23,737 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974030592] [2021-06-05 05:50:23,738 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974030592] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:50:23,738 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528844147] [2021-06-05 05:50:23,738 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 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:50:23,772 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-06-05 05:50:23,772 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:50:23,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 36 conjunts are in the unsatisfiable core [2021-06-05 05:50:23,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:50:23,985 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:50:23,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:23,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:23,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:23,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:23,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:23,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:23,991 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 31 [2021-06-05 05:50:23,993 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:50:23,999 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:50:24,000 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:50:24,000 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:79, output treesize:7 [2021-06-05 05:50:24,012 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 4 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:50:24,013 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1528844147] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:50:24,013 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:50:24,013 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 15 [2021-06-05 05:50:24,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396273864] [2021-06-05 05:50:24,013 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 05:50:24,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:50:24,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 05:50:24,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2021-06-05 05:50:24,014 INFO L87 Difference]: Start difference. First operand 1567 states and 3801 transitions. Second operand has 16 states, 16 states have (on average 3.25) internal successors, (52), 15 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:24,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:50:24,433 INFO L93 Difference]: Finished difference Result 2887 states and 6964 transitions. [2021-06-05 05:50:24,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-05 05:50:24,433 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.25) internal successors, (52), 15 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-06-05 05:50:24,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:50:24,438 INFO L225 Difference]: With dead ends: 2887 [2021-06-05 05:50:24,438 INFO L226 Difference]: Without dead ends: 2695 [2021-06-05 05:50:24,438 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 34 SyntacticMatches, 4 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 435.5ms TimeCoverageRelationStatistics Valid=122, Invalid=634, Unknown=0, NotChecked=0, Total=756 [2021-06-05 05:50:24,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2695 states. [2021-06-05 05:50:24,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2695 to 1727. [2021-06-05 05:50:24,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1727 states, 1726 states have (on average 2.4281575898030128) internal successors, (4191), 1726 states have internal predecessors, (4191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:24,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1727 states to 1727 states and 4191 transitions. [2021-06-05 05:50:24,471 INFO L78 Accepts]: Start accepts. Automaton has 1727 states and 4191 transitions. Word has length 41 [2021-06-05 05:50:24,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:50:24,471 INFO L482 AbstractCegarLoop]: Abstraction has 1727 states and 4191 transitions. [2021-06-05 05:50:24,471 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 3.25) internal successors, (52), 15 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:24,471 INFO L276 IsEmpty]: Start isEmpty. Operand 1727 states and 4191 transitions. [2021-06-05 05:50:24,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-06-05 05:50:24,474 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:50:24,474 INFO L521 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:50:24,696 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-06-05 05:50:24,697 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:50:24,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:50:24,697 INFO L82 PathProgramCache]: Analyzing trace with hash 1266351901, now seen corresponding path program 16 times [2021-06-05 05:50:24,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:50:24,697 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679124946] [2021-06-05 05:50:24,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:50:24,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:50:24,859 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 4 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:50:24,859 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:50:24,859 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679124946] [2021-06-05 05:50:24,859 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679124946] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:50:24,860 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1284006048] [2021-06-05 05:50:24,860 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 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:50:24,891 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 05:50:24,891 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:50:24,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 34 conjunts are in the unsatisfiable core [2021-06-05 05:50:24,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:50:25,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:25,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:25,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:25,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:25,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:25,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:25,146 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:50:25,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:25,147 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 31 [2021-06-05 05:50:25,150 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:50:25,155 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:50:25,156 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:50:25,156 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:79, output treesize:7 [2021-06-05 05:50:25,168 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 4 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:50:25,168 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1284006048] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:50:25,168 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:50:25,168 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 16 [2021-06-05 05:50:25,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124125355] [2021-06-05 05:50:25,168 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 05:50:25,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:50:25,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 05:50:25,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2021-06-05 05:50:25,169 INFO L87 Difference]: Start difference. First operand 1727 states and 4191 transitions. Second operand has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 16 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:25,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:50:25,596 INFO L93 Difference]: Finished difference Result 3015 states and 7407 transitions. [2021-06-05 05:50:25,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-05 05:50:25,596 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 16 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-06-05 05:50:25,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:50:25,601 INFO L225 Difference]: With dead ends: 3015 [2021-06-05 05:50:25,601 INFO L226 Difference]: Without dead ends: 2927 [2021-06-05 05:50:25,601 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 33 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 402.2ms TimeCoverageRelationStatistics Valid=124, Invalid=688, Unknown=0, NotChecked=0, Total=812 [2021-06-05 05:50:25,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2927 states. [2021-06-05 05:50:25,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2927 to 1727. [2021-06-05 05:50:25,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1727 states, 1726 states have (on average 2.4281575898030128) internal successors, (4191), 1726 states have internal predecessors, (4191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:25,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1727 states to 1727 states and 4191 transitions. [2021-06-05 05:50:25,659 INFO L78 Accepts]: Start accepts. Automaton has 1727 states and 4191 transitions. Word has length 41 [2021-06-05 05:50:25,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:50:25,659 INFO L482 AbstractCegarLoop]: Abstraction has 1727 states and 4191 transitions. [2021-06-05 05:50:25,659 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 16 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:25,659 INFO L276 IsEmpty]: Start isEmpty. Operand 1727 states and 4191 transitions. [2021-06-05 05:50:25,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-06-05 05:50:25,662 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:50:25,662 INFO L521 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:50:25,876 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-06-05 05:50:25,877 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:50:25,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:50:25,877 INFO L82 PathProgramCache]: Analyzing trace with hash 1741431069, now seen corresponding path program 17 times [2021-06-05 05:50:25,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:50:25,877 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728846632] [2021-06-05 05:50:25,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:50:25,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:50:26,047 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 4 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:50:26,047 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:50:26,047 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728846632] [2021-06-05 05:50:26,047 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728846632] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:50:26,047 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298504309] [2021-06-05 05:50:26,047 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 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:50:26,081 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-06-05 05:50:26,081 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:50:26,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 36 conjunts are in the unsatisfiable core [2021-06-05 05:50:26,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:50:26,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:26,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:26,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:26,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:26,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:26,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:26,335 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:50:26,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:26,336 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 31 [2021-06-05 05:50:26,337 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:50:26,343 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:50:26,344 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:50:26,344 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:79, output treesize:7 [2021-06-05 05:50:26,356 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 4 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:50:26,356 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [298504309] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:50:26,356 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:50:26,356 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 16 [2021-06-05 05:50:26,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141093420] [2021-06-05 05:50:26,357 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 05:50:26,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:50:26,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 05:50:26,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2021-06-05 05:50:26,357 INFO L87 Difference]: Start difference. First operand 1727 states and 4191 transitions. Second operand has 17 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 16 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:26,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:50:26,985 INFO L93 Difference]: Finished difference Result 2859 states and 6894 transitions. [2021-06-05 05:50:26,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-05 05:50:26,986 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 16 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-06-05 05:50:26,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:50:26,989 INFO L225 Difference]: With dead ends: 2859 [2021-06-05 05:50:26,990 INFO L226 Difference]: Without dead ends: 2583 [2021-06-05 05:50:26,990 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 33 SyntacticMatches, 4 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 460.4ms TimeCoverageRelationStatistics Valid=144, Invalid=786, Unknown=0, NotChecked=0, Total=930 [2021-06-05 05:50:26,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2583 states. [2021-06-05 05:50:27,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2583 to 1903. [2021-06-05 05:50:27,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1903 states, 1902 states have (on average 2.429547844374343) internal successors, (4621), 1902 states have internal predecessors, (4621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:27,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1903 states to 1903 states and 4621 transitions. [2021-06-05 05:50:27,046 INFO L78 Accepts]: Start accepts. Automaton has 1903 states and 4621 transitions. Word has length 41 [2021-06-05 05:50:27,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:50:27,046 INFO L482 AbstractCegarLoop]: Abstraction has 1903 states and 4621 transitions. [2021-06-05 05:50:27,046 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 16 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:27,046 INFO L276 IsEmpty]: Start isEmpty. Operand 1903 states and 4621 transitions. [2021-06-05 05:50:27,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 05:50:27,050 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:50:27,050 INFO L521 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:50:27,273 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-06-05 05:50:27,273 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:50:27,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:50:27,274 INFO L82 PathProgramCache]: Analyzing trace with hash 1886074107, now seen corresponding path program 18 times [2021-06-05 05:50:27,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:50:27,274 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107596999] [2021-06-05 05:50:27,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:50:27,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:50:27,476 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 5 proven. 58 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:50:27,476 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:50:27,476 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107596999] [2021-06-05 05:50:27,476 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107596999] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:50:27,476 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [520070261] [2021-06-05 05:50:27,477 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 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:50:27,507 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-06-05 05:50:27,507 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:50:27,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 42 conjunts are in the unsatisfiable core [2021-06-05 05:50:27,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:50:27,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:27,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:27,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:27,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:27,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:27,921 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:50:27,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:27,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:27,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:27,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:27,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:27,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:27,927 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:50:27,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:27,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:27,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:27,929 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:50:27,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:27,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:27,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:27,934 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:50:27,935 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 10 disjoint index pairs (out of 36 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 36 [2021-06-05 05:50:27,937 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:50:27,943 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:50:27,944 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:50:27,945 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:96, output treesize:7 [2021-06-05 05:50:27,957 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 10 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:50:27,957 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [520070261] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:50:27,957 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:50:27,957 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 21 [2021-06-05 05:50:27,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368680889] [2021-06-05 05:50:27,957 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-05 05:50:27,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:50:27,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-05 05:50:27,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=395, Unknown=0, NotChecked=0, Total=462 [2021-06-05 05:50:27,958 INFO L87 Difference]: Start difference. First operand 1903 states and 4621 transitions. Second operand has 22 states, 22 states have (on average 3.227272727272727) internal successors, (71), 21 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:28,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:50:28,607 INFO L93 Difference]: Finished difference Result 3311 states and 8145 transitions. [2021-06-05 05:50:28,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-05 05:50:28,608 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.227272727272727) internal successors, (71), 21 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 05:50:28,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:50:28,613 INFO L225 Difference]: With dead ends: 3311 [2021-06-05 05:50:28,613 INFO L226 Difference]: Without dead ends: 3247 [2021-06-05 05:50:28,614 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 655.4ms TimeCoverageRelationStatistics Valid=166, Invalid=1166, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 05:50:28,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3247 states. [2021-06-05 05:50:28,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3247 to 1951. [2021-06-05 05:50:28,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1951 states, 1950 states have (on average 2.427179487179487) internal successors, (4733), 1950 states have internal predecessors, (4733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:28,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1951 states to 1951 states and 4733 transitions. [2021-06-05 05:50:28,662 INFO L78 Accepts]: Start accepts. Automaton has 1951 states and 4733 transitions. Word has length 47 [2021-06-05 05:50:28,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:50:28,662 INFO L482 AbstractCegarLoop]: Abstraction has 1951 states and 4733 transitions. [2021-06-05 05:50:28,663 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 3.227272727272727) internal successors, (71), 21 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:28,663 INFO L276 IsEmpty]: Start isEmpty. Operand 1951 states and 4733 transitions. [2021-06-05 05:50:28,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 05:50:28,666 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:50:28,666 INFO L521 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:50:28,880 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-06-05 05:50:28,881 INFO L430 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:50:28,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:50:28,881 INFO L82 PathProgramCache]: Analyzing trace with hash -623310085, now seen corresponding path program 19 times [2021-06-05 05:50:28,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:50:28,881 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128769951] [2021-06-05 05:50:28,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:50:28,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:50:29,072 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 5 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:50:29,072 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:50:29,072 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128769951] [2021-06-05 05:50:29,072 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128769951] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:50:29,072 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434803017] [2021-06-05 05:50:29,073 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 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:50:29,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:50:29,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 42 conjunts are in the unsatisfiable core [2021-06-05 05:50:29,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:50:29,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:29,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:29,401 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:50:29,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:29,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:29,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:29,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:29,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:29,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:29,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:29,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:29,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:29,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:29,410 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:50:29,410 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:50:29,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:29,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:29,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:29,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:29,414 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:50:29,415 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 10 disjoint index pairs (out of 36 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 36 [2021-06-05 05:50:29,416 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:50:29,422 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:50:29,423 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:50:29,423 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:96, output treesize:7 [2021-06-05 05:50:29,435 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 9 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:50:29,435 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1434803017] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:50:29,435 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:50:29,435 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 20 [2021-06-05 05:50:29,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968279480] [2021-06-05 05:50:29,435 INFO L462 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-06-05 05:50:29,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:50:29,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-06-05 05:50:29,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=355, Unknown=0, NotChecked=0, Total=420 [2021-06-05 05:50:29,436 INFO L87 Difference]: Start difference. First operand 1951 states and 4733 transitions. Second operand has 21 states, 21 states have (on average 3.4285714285714284) internal successors, (72), 20 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:30,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:50:30,029 INFO L93 Difference]: Finished difference Result 2795 states and 6809 transitions. [2021-06-05 05:50:30,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-05 05:50:30,029 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.4285714285714284) internal successors, (72), 20 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 05:50:30,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:50:30,033 INFO L225 Difference]: With dead ends: 2795 [2021-06-05 05:50:30,033 INFO L226 Difference]: Without dead ends: 2735 [2021-06-05 05:50:30,034 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 643.3ms TimeCoverageRelationStatistics Valid=174, Invalid=1086, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 05:50:30,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2735 states. [2021-06-05 05:50:30,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2735 to 1775. [2021-06-05 05:50:30,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1775 states, 1774 states have (on average 2.4255918827508456) internal successors, (4303), 1774 states have internal predecessors, (4303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:30,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1775 states to 1775 states and 4303 transitions. [2021-06-05 05:50:30,062 INFO L78 Accepts]: Start accepts. Automaton has 1775 states and 4303 transitions. Word has length 47 [2021-06-05 05:50:30,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:50:30,063 INFO L482 AbstractCegarLoop]: Abstraction has 1775 states and 4303 transitions. [2021-06-05 05:50:30,063 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 3.4285714285714284) internal successors, (72), 20 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:30,063 INFO L276 IsEmpty]: Start isEmpty. Operand 1775 states and 4303 transitions. [2021-06-05 05:50:30,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 05:50:30,065 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:50:30,065 INFO L521 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:50:30,278 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:50:30,278 INFO L430 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:50:30,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:50:30,279 INFO L82 PathProgramCache]: Analyzing trace with hash 509730555, now seen corresponding path program 20 times [2021-06-05 05:50:30,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:50:30,279 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311917148] [2021-06-05 05:50:30,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:50:30,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:50:30,452 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 5 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:50:30,452 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:50:30,452 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311917148] [2021-06-05 05:50:30,452 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311917148] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:50:30,452 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190763067] [2021-06-05 05:50:30,453 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 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:50:30,494 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 05:50:30,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:50:30,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 42 conjunts are in the unsatisfiable core [2021-06-05 05:50:30,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:50:30,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:30,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:30,883 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:50:30,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:30,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:30,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:30,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:30,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:30,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:30,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:30,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:30,890 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:50:30,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:30,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:30,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:30,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:30,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:30,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:30,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:30,898 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:50:30,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:30,899 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:50:30,900 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 10 disjoint index pairs (out of 36 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 36 [2021-06-05 05:50:30,902 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:50:30,908 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:50:30,909 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:50:30,909 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:96, output treesize:7 [2021-06-05 05:50:30,921 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 5 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:50:30,922 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [190763067] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:50:30,922 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:50:30,922 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 21 [2021-06-05 05:50:30,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418343204] [2021-06-05 05:50:30,922 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-05 05:50:30,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:50:30,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-05 05:50:30,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=395, Unknown=0, NotChecked=0, Total=462 [2021-06-05 05:50:30,923 INFO L87 Difference]: Start difference. First operand 1775 states and 4303 transitions. Second operand has 22 states, 22 states have (on average 3.272727272727273) internal successors, (72), 21 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:31,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:50:31,642 INFO L93 Difference]: Finished difference Result 3447 states and 8527 transitions. [2021-06-05 05:50:31,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-05 05:50:31,643 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.272727272727273) internal successors, (72), 21 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 05:50:31,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:50:31,648 INFO L225 Difference]: With dead ends: 3447 [2021-06-05 05:50:31,648 INFO L226 Difference]: Without dead ends: 3359 [2021-06-05 05:50:31,648 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 600.3ms TimeCoverageRelationStatistics Valid=166, Invalid=1166, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 05:50:31,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3359 states. [2021-06-05 05:50:31,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3359 to 1535. [2021-06-05 05:50:31,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1535 states, 1534 states have (on average 2.4400260756192957) internal successors, (3743), 1534 states have internal predecessors, (3743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:31,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1535 states to 1535 states and 3743 transitions. [2021-06-05 05:50:31,679 INFO L78 Accepts]: Start accepts. Automaton has 1535 states and 3743 transitions. Word has length 47 [2021-06-05 05:50:31,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:50:31,679 INFO L482 AbstractCegarLoop]: Abstraction has 1535 states and 3743 transitions. [2021-06-05 05:50:31,679 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 3.272727272727273) internal successors, (72), 21 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:31,679 INFO L276 IsEmpty]: Start isEmpty. Operand 1535 states and 3743 transitions. [2021-06-05 05:50:31,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 05:50:31,682 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:50:31,682 INFO L521 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:50:31,903 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-06-05 05:50:31,903 INFO L430 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:50:31,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:50:31,904 INFO L82 PathProgramCache]: Analyzing trace with hash -2131831045, now seen corresponding path program 21 times [2021-06-05 05:50:31,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:50:31,904 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953932522] [2021-06-05 05:50:31,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:50:31,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:50:32,086 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 5 proven. 56 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-06-05 05:50:32,087 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:50:32,087 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953932522] [2021-06-05 05:50:32,087 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953932522] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:50:32,087 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568235173] [2021-06-05 05:50:32,087 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 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:50:32,124 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-06-05 05:50:32,125 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:50:32,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 43 conjunts are in the unsatisfiable core [2021-06-05 05:50:32,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:50:32,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:32,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:32,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:32,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:32,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:32,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:32,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:32,679 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:50:32,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:32,680 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:50:32,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:32,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:32,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:32,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:32,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:32,684 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:50:32,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:32,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:32,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:32,687 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:50:32,688 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 10 disjoint index pairs (out of 36 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 36 [2021-06-05 05:50:32,689 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:50:32,704 INFO L628 ElimStorePlain]: treesize reduction 5, result has 81.5 percent of original size [2021-06-05 05:50:32,706 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:50:32,706 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:104, output treesize:7 [2021-06-05 05:50:32,718 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 5 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:50:32,718 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [568235173] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:50:32,718 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:50:32,718 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 21 [2021-06-05 05:50:32,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721222135] [2021-06-05 05:50:32,718 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-05 05:50:32,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:50:32,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-05 05:50:32,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=407, Unknown=0, NotChecked=0, Total=462 [2021-06-05 05:50:32,719 INFO L87 Difference]: Start difference. First operand 1535 states and 3743 transitions. Second operand has 22 states, 22 states have (on average 3.1818181818181817) internal successors, (70), 21 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:34,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:50:34,013 INFO L93 Difference]: Finished difference Result 2779 states and 6803 transitions. [2021-06-05 05:50:34,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-05 05:50:34,014 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.1818181818181817) internal successors, (70), 21 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 05:50:34,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:50:34,018 INFO L225 Difference]: With dead ends: 2779 [2021-06-05 05:50:34,018 INFO L226 Difference]: Without dead ends: 2591 [2021-06-05 05:50:34,018 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 962.9ms TimeCoverageRelationStatistics Valid=174, Invalid=1232, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 05:50:34,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2591 states. [2021-06-05 05:50:34,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2591 to 1679. [2021-06-05 05:50:34,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1679 states, 1678 states have (on average 2.435637663885578) internal successors, (4087), 1678 states have internal predecessors, (4087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:34,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1679 states to 1679 states and 4087 transitions. [2021-06-05 05:50:34,042 INFO L78 Accepts]: Start accepts. Automaton has 1679 states and 4087 transitions. Word has length 47 [2021-06-05 05:50:34,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:50:34,043 INFO L482 AbstractCegarLoop]: Abstraction has 1679 states and 4087 transitions. [2021-06-05 05:50:34,043 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 3.1818181818181817) internal successors, (70), 21 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:34,043 INFO L276 IsEmpty]: Start isEmpty. Operand 1679 states and 4087 transitions. [2021-06-05 05:50:34,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 05:50:34,046 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:50:34,047 INFO L521 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:50:34,260 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:50:34,261 INFO L430 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:50:34,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:50:34,261 INFO L82 PathProgramCache]: Analyzing trace with hash -1991114501, now seen corresponding path program 22 times [2021-06-05 05:50:34,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:50:34,261 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336222971] [2021-06-05 05:50:34,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:50:34,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:50:34,472 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 5 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:50:34,472 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:50:34,473 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336222971] [2021-06-05 05:50:34,473 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336222971] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:50:34,473 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059887487] [2021-06-05 05:50:34,473 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 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:50:34,502 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 05:50:34,502 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:50:34,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 42 conjunts are in the unsatisfiable core [2021-06-05 05:50:34,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:50:34,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:34,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:34,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:34,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:34,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:34,851 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:50:34,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:34,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:34,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:34,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:34,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:34,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:34,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:34,856 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:50:34,857 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:50:34,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:34,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:34,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:34,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:34,859 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:50:34,860 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 10 disjoint index pairs (out of 36 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 36 [2021-06-05 05:50:34,862 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:50:34,868 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:50:34,869 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:50:34,869 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:96, output treesize:7 [2021-06-05 05:50:34,879 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 5 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:50:34,879 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059887487] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:50:34,879 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:50:34,879 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 22 [2021-06-05 05:50:34,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175420850] [2021-06-05 05:50:34,879 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-06-05 05:50:34,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:50:34,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-06-05 05:50:34,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2021-06-05 05:50:34,880 INFO L87 Difference]: Start difference. First operand 1679 states and 4087 transitions. Second operand has 23 states, 23 states have (on average 3.130434782608696) internal successors, (72), 22 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:35,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:50:35,491 INFO L93 Difference]: Finished difference Result 3239 states and 8031 transitions. [2021-06-05 05:50:35,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-05 05:50:35,491 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.130434782608696) internal successors, (72), 22 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 05:50:35,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:50:35,503 INFO L225 Difference]: With dead ends: 3239 [2021-06-05 05:50:35,504 INFO L226 Difference]: Without dead ends: 3151 [2021-06-05 05:50:35,504 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 639.0ms TimeCoverageRelationStatistics Valid=172, Invalid=1234, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 05:50:35,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3151 states. [2021-06-05 05:50:35,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3151 to 1487. [2021-06-05 05:50:35,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1487 states, 1486 states have (on average 2.4488559892328396) internal successors, (3639), 1486 states have internal predecessors, (3639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:35,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1487 states to 1487 states and 3639 transitions. [2021-06-05 05:50:35,532 INFO L78 Accepts]: Start accepts. Automaton has 1487 states and 3639 transitions. Word has length 47 [2021-06-05 05:50:35,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:50:35,532 INFO L482 AbstractCegarLoop]: Abstraction has 1487 states and 3639 transitions. [2021-06-05 05:50:35,533 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 3.130434782608696) internal successors, (72), 22 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:35,533 INFO L276 IsEmpty]: Start isEmpty. Operand 1487 states and 3639 transitions. [2021-06-05 05:50:35,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 05:50:35,535 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:50:35,535 INFO L521 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:50:35,757 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-06-05 05:50:35,757 INFO L430 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:50:35,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:50:35,758 INFO L82 PathProgramCache]: Analyzing trace with hash 93498107, now seen corresponding path program 23 times [2021-06-05 05:50:35,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:50:35,758 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490115982] [2021-06-05 05:50:35,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:50:35,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:50:35,944 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 5 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:50:35,944 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:50:35,944 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490115982] [2021-06-05 05:50:35,944 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490115982] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:50:35,944 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344444194] [2021-06-05 05:50:35,944 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 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:50:35,976 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-06-05 05:50:35,976 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:50:35,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 44 conjunts are in the unsatisfiable core [2021-06-05 05:50:35,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:50:36,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:36,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:36,351 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:50:36,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:36,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:36,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:36,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:36,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:36,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:36,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:36,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:36,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:36,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:36,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:36,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:36,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:36,361 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:50:36,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:36,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:36,363 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:50:36,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:36,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:36,364 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:50:36,365 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 10 disjoint index pairs (out of 36 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 36 [2021-06-05 05:50:36,366 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:50:36,372 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:50:36,374 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:50:36,374 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:96, output treesize:7 [2021-06-05 05:50:36,386 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 5 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:50:36,386 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344444194] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:50:36,386 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:50:36,386 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 22 [2021-06-05 05:50:36,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931961664] [2021-06-05 05:50:36,386 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-06-05 05:50:36,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:50:36,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-06-05 05:50:36,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=432, Unknown=0, NotChecked=0, Total=506 [2021-06-05 05:50:36,387 INFO L87 Difference]: Start difference. First operand 1487 states and 3639 transitions. Second operand has 23 states, 23 states have (on average 3.130434782608696) internal successors, (72), 22 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:36,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:50:36,970 INFO L93 Difference]: Finished difference Result 2771 states and 6747 transitions. [2021-06-05 05:50:36,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-05 05:50:36,971 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.130434782608696) internal successors, (72), 22 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 05:50:36,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:50:36,973 INFO L225 Difference]: With dead ends: 2771 [2021-06-05 05:50:36,973 INFO L226 Difference]: Without dead ends: 2479 [2021-06-05 05:50:36,974 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 620.4ms TimeCoverageRelationStatistics Valid=178, Invalid=1228, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 05:50:36,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2479 states. [2021-06-05 05:50:37,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2479 to 1727. [2021-06-05 05:50:37,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1727 states, 1726 states have (on average 2.437427578215527) internal successors, (4207), 1726 states have internal predecessors, (4207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:37,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1727 states to 1727 states and 4207 transitions. [2021-06-05 05:50:37,006 INFO L78 Accepts]: Start accepts. Automaton has 1727 states and 4207 transitions. Word has length 47 [2021-06-05 05:50:37,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:50:37,006 INFO L482 AbstractCegarLoop]: Abstraction has 1727 states and 4207 transitions. [2021-06-05 05:50:37,007 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 3.130434782608696) internal successors, (72), 22 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:37,007 INFO L276 IsEmpty]: Start isEmpty. Operand 1727 states and 4207 transitions. [2021-06-05 05:50:37,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 05:50:37,009 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:50:37,009 INFO L521 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:50:37,220 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:50:37,221 INFO L430 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:50:37,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:50:37,221 INFO L82 PathProgramCache]: Analyzing trace with hash -465548037, now seen corresponding path program 24 times [2021-06-05 05:50:37,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:50:37,221 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063275000] [2021-06-05 05:50:37,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:50:37,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:50:37,419 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 5 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:50:37,419 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:50:37,419 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063275000] [2021-06-05 05:50:37,419 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063275000] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:50:37,419 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12385977] [2021-06-05 05:50:37,419 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 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:50:37,447 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-06-05 05:50:37,448 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:50:37,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 42 conjunts are in the unsatisfiable core [2021-06-05 05:50:37,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:50:38,206 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:50:38,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:38,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:38,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:38,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:38,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:38,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:38,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:38,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:38,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:38,214 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:50:38,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:38,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:38,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:38,217 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:50:38,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:38,218 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 10 disjoint index pairs (out of 28 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 36 [2021-06-05 05:50:38,220 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:50:38,238 INFO L628 ElimStorePlain]: treesize reduction 3, result has 89.3 percent of original size [2021-06-05 05:50:38,240 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:50:38,240 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:105, output treesize:7 [2021-06-05 05:50:38,251 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 5 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:50:38,251 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12385977] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:50:38,251 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:50:38,252 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 21 [2021-06-05 05:50:38,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028549613] [2021-06-05 05:50:38,252 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-05 05:50:38,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:50:38,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-05 05:50:38,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=398, Unknown=0, NotChecked=0, Total=462 [2021-06-05 05:50:38,253 INFO L87 Difference]: Start difference. First operand 1727 states and 4207 transitions. Second operand has 22 states, 22 states have (on average 3.090909090909091) internal successors, (68), 21 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:40,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:50:40,770 INFO L93 Difference]: Finished difference Result 3635 states and 8859 transitions. [2021-06-05 05:50:40,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-05 05:50:40,771 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.090909090909091) internal successors, (68), 21 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 05:50:40,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:50:40,774 INFO L225 Difference]: With dead ends: 3635 [2021-06-05 05:50:40,774 INFO L226 Difference]: Without dead ends: 3279 [2021-06-05 05:50:40,774 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 37 SyntacticMatches, 3 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 1483.4ms TimeCoverageRelationStatistics Valid=197, Invalid=1443, Unknown=0, NotChecked=0, Total=1640 [2021-06-05 05:50:40,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3279 states. [2021-06-05 05:50:40,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3279 to 1775. [2021-06-05 05:50:40,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1775 states, 1774 states have (on average 2.4436302142051862) internal successors, (4335), 1774 states have internal predecessors, (4335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:40,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1775 states to 1775 states and 4335 transitions. [2021-06-05 05:50:40,799 INFO L78 Accepts]: Start accepts. Automaton has 1775 states and 4335 transitions. Word has length 47 [2021-06-05 05:50:40,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:50:40,799 INFO L482 AbstractCegarLoop]: Abstraction has 1775 states and 4335 transitions. [2021-06-05 05:50:40,800 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 3.090909090909091) internal successors, (68), 21 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:40,800 INFO L276 IsEmpty]: Start isEmpty. Operand 1775 states and 4335 transitions. [2021-06-05 05:50:40,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 05:50:40,802 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:50:40,802 INFO L521 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:50:41,009 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-06-05 05:50:41,010 INFO L430 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:50:41,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:50:41,010 INFO L82 PathProgramCache]: Analyzing trace with hash 2011837691, now seen corresponding path program 25 times [2021-06-05 05:50:41,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:50:41,010 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098529488] [2021-06-05 05:50:41,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:50:41,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:50:41,207 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 5 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:50:41,207 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:50:41,207 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098529488] [2021-06-05 05:50:41,207 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098529488] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:50:41,207 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262805863] [2021-06-05 05:50:41,207 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 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:50:41,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:50:41,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 42 conjunts are in the unsatisfiable core [2021-06-05 05:50:41,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:50:41,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:41,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:41,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:41,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:41,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:41,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:41,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:41,536 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:50:41,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:41,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:41,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:41,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:41,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:41,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:41,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:41,541 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:50:41,541 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 10 disjoint index pairs (out of 21 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 36 [2021-06-05 05:50:41,542 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:50:41,547 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:50:41,548 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:50:41,548 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:96, output treesize:7 [2021-06-05 05:50:41,560 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 9 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:50:41,561 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1262805863] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:50:41,561 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:50:41,561 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 19 [2021-06-05 05:50:41,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168640953] [2021-06-05 05:50:41,561 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 05:50:41,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:50:41,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 05:50:41,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2021-06-05 05:50:41,562 INFO L87 Difference]: Start difference. First operand 1775 states and 4335 transitions. Second operand has 20 states, 20 states have (on average 3.2) internal successors, (64), 19 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:42,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:50:42,343 INFO L93 Difference]: Finished difference Result 3459 states and 8391 transitions. [2021-06-05 05:50:42,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-05 05:50:42,343 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.2) internal successors, (64), 19 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 05:50:42,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:50:42,346 INFO L225 Difference]: With dead ends: 3459 [2021-06-05 05:50:42,347 INFO L226 Difference]: Without dead ends: 3151 [2021-06-05 05:50:42,347 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 38 SyntacticMatches, 4 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 720.6ms TimeCoverageRelationStatistics Valid=186, Invalid=1220, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 05:50:42,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3151 states. [2021-06-05 05:50:42,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3151 to 2079. [2021-06-05 05:50:42,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2079 states, 2078 states have (on average 2.433589990375361) internal successors, (5057), 2078 states have internal predecessors, (5057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:42,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2079 states to 2079 states and 5057 transitions. [2021-06-05 05:50:42,371 INFO L78 Accepts]: Start accepts. Automaton has 2079 states and 5057 transitions. Word has length 47 [2021-06-05 05:50:42,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:50:42,371 INFO L482 AbstractCegarLoop]: Abstraction has 2079 states and 5057 transitions. [2021-06-05 05:50:42,372 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 3.2) internal successors, (64), 19 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:42,372 INFO L276 IsEmpty]: Start isEmpty. Operand 2079 states and 5057 transitions. [2021-06-05 05:50:42,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 05:50:42,374 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:50:42,374 INFO L521 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:50:42,592 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:50:42,592 INFO L430 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:50:42,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:50:42,592 INFO L82 PathProgramCache]: Analyzing trace with hash 795539707, now seen corresponding path program 26 times [2021-06-05 05:50:42,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:50:42,592 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096626749] [2021-06-05 05:50:42,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:50:42,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:50:42,814 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 5 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:50:42,814 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:50:42,814 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096626749] [2021-06-05 05:50:42,815 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096626749] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:50:42,815 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [828244001] [2021-06-05 05:50:42,815 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 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:50:42,848 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 05:50:42,849 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:50:42,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 42 conjunts are in the unsatisfiable core [2021-06-05 05:50:42,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:50:43,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:43,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:43,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:43,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:43,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:43,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:43,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:43,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:43,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:43,149 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:50:43,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:43,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:43,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:43,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:43,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:43,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:43,153 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:50:43,154 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 10 disjoint index pairs (out of 21 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 36 [2021-06-05 05:50:43,155 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:50:43,160 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:50:43,161 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:50:43,161 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:96, output treesize:7 [2021-06-05 05:50:43,170 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 9 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:50:43,170 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [828244001] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:50:43,170 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:50:43,170 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 19 [2021-06-05 05:50:43,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209671976] [2021-06-05 05:50:43,171 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 05:50:43,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:50:43,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 05:50:43,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2021-06-05 05:50:43,171 INFO L87 Difference]: Start difference. First operand 2079 states and 5057 transitions. Second operand has 20 states, 20 states have (on average 3.2) internal successors, (64), 19 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:44,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:50:44,041 INFO L93 Difference]: Finished difference Result 3203 states and 7713 transitions. [2021-06-05 05:50:44,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-05 05:50:44,041 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.2) internal successors, (64), 19 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 05:50:44,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:50:44,044 INFO L225 Difference]: With dead ends: 3203 [2021-06-05 05:50:44,044 INFO L226 Difference]: Without dead ends: 2875 [2021-06-05 05:50:44,044 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 38 SyntacticMatches, 4 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 768.9ms TimeCoverageRelationStatistics Valid=189, Invalid=1293, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 05:50:44,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2875 states. [2021-06-05 05:50:44,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2875 to 1595. [2021-06-05 05:50:44,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1595 states, 1594 states have (on average 2.4084065244667503) internal successors, (3839), 1594 states have internal predecessors, (3839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:44,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1595 states to 1595 states and 3839 transitions. [2021-06-05 05:50:44,063 INFO L78 Accepts]: Start accepts. Automaton has 1595 states and 3839 transitions. Word has length 47 [2021-06-05 05:50:44,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:50:44,063 INFO L482 AbstractCegarLoop]: Abstraction has 1595 states and 3839 transitions. [2021-06-05 05:50:44,064 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 3.2) internal successors, (64), 19 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:44,064 INFO L276 IsEmpty]: Start isEmpty. Operand 1595 states and 3839 transitions. [2021-06-05 05:50:44,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 05:50:44,066 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:50:44,066 INFO L521 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:50:44,287 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-06-05 05:50:44,287 INFO L430 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:50:44,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:50:44,287 INFO L82 PathProgramCache]: Analyzing trace with hash -281774341, now seen corresponding path program 27 times [2021-06-05 05:50:44,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:50:44,287 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770310451] [2021-06-05 05:50:44,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:50:44,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:50:44,478 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 5 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:50:44,479 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:50:44,479 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770310451] [2021-06-05 05:50:44,479 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770310451] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:50:44,479 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400614029] [2021-06-05 05:50:44,479 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 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:50:44,508 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-06-05 05:50:44,508 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:50:44,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 42 conjunts are in the unsatisfiable core [2021-06-05 05:50:44,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:50:44,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:44,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:44,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:44,838 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:50:44,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:44,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:44,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:44,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:44,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:44,843 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:50:44,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:44,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:44,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:44,846 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 10 disjoint index pairs (out of 21 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 36 [2021-06-05 05:50:44,848 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:50:44,854 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:50:44,855 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:50:44,855 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:96, output treesize:7 [2021-06-05 05:50:44,867 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 5 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:50:44,868 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [400614029] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:50:44,868 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:50:44,868 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 20 [2021-06-05 05:50:44,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65457266] [2021-06-05 05:50:44,868 INFO L462 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-06-05 05:50:44,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:50:44,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-06-05 05:50:44,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2021-06-05 05:50:44,869 INFO L87 Difference]: Start difference. First operand 1595 states and 3839 transitions. Second operand has 21 states, 21 states have (on average 3.0476190476190474) internal successors, (64), 20 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:45,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:50:45,531 INFO L93 Difference]: Finished difference Result 2927 states and 7131 transitions. [2021-06-05 05:50:45,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-05 05:50:45,531 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.0476190476190474) internal successors, (64), 20 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 05:50:45,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:50:45,534 INFO L225 Difference]: With dead ends: 2927 [2021-06-05 05:50:45,534 INFO L226 Difference]: Without dead ends: 2795 [2021-06-05 05:50:45,535 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 37 SyntacticMatches, 4 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 585.3ms TimeCoverageRelationStatistics Valid=166, Invalid=1094, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 05:50:45,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2795 states. [2021-06-05 05:50:45,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2795 to 1659. [2021-06-05 05:50:45,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1659 states, 1658 states have (on average 2.4119420989143547) internal successors, (3999), 1658 states have internal predecessors, (3999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:45,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1659 states to 1659 states and 3999 transitions. [2021-06-05 05:50:45,556 INFO L78 Accepts]: Start accepts. Automaton has 1659 states and 3999 transitions. Word has length 47 [2021-06-05 05:50:45,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:50:45,556 INFO L482 AbstractCegarLoop]: Abstraction has 1659 states and 3999 transitions. [2021-06-05 05:50:45,556 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 3.0476190476190474) internal successors, (64), 20 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:45,556 INFO L276 IsEmpty]: Start isEmpty. Operand 1659 states and 3999 transitions. [2021-06-05 05:50:45,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 05:50:45,559 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:50:45,559 INFO L521 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:50:45,772 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:50:45,773 INFO L430 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:50:45,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:50:45,773 INFO L82 PathProgramCache]: Analyzing trace with hash -1629840645, now seen corresponding path program 28 times [2021-06-05 05:50:45,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:50:45,773 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493369393] [2021-06-05 05:50:45,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:50:45,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:50:45,970 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 5 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:50:45,970 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:50:45,970 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493369393] [2021-06-05 05:50:45,970 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493369393] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:50:45,970 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624752818] [2021-06-05 05:50:45,970 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 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:50:45,997 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 05:50:45,997 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:50:45,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 42 conjunts are in the unsatisfiable core [2021-06-05 05:50:45,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:50:46,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:46,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:46,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:46,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:46,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:46,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:46,235 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:50:46,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:46,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:46,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:46,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:46,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:46,240 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 36 [2021-06-05 05:50:46,241 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:50:46,248 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:50:46,249 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:50:46,249 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:96, output treesize:7 [2021-06-05 05:50:46,262 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 9 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:50:46,262 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1624752818] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:50:46,262 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:50:46,262 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 18 [2021-06-05 05:50:46,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331988240] [2021-06-05 05:50:46,262 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 05:50:46,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:50:46,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 05:50:46,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2021-06-05 05:50:46,263 INFO L87 Difference]: Start difference. First operand 1659 states and 3999 transitions. Second operand has 19 states, 19 states have (on average 3.1578947368421053) internal successors, (60), 18 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:47,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:50:47,090 INFO L93 Difference]: Finished difference Result 3391 states and 8167 transitions. [2021-06-05 05:50:47,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-05 05:50:47,090 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.1578947368421053) internal successors, (60), 18 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 05:50:47,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:50:47,093 INFO L225 Difference]: With dead ends: 3391 [2021-06-05 05:50:47,093 INFO L226 Difference]: Without dead ends: 3063 [2021-06-05 05:50:47,093 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 38 SyntacticMatches, 5 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 724.4ms TimeCoverageRelationStatistics Valid=179, Invalid=1153, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 05:50:47,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3063 states. [2021-06-05 05:50:47,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3063 to 2039. [2021-06-05 05:50:47,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2039 states, 2038 states have (on average 2.4077526987242392) internal successors, (4907), 2038 states have internal predecessors, (4907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:47,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2039 states to 2039 states and 4907 transitions. [2021-06-05 05:50:47,123 INFO L78 Accepts]: Start accepts. Automaton has 2039 states and 4907 transitions. Word has length 47 [2021-06-05 05:50:47,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:50:47,123 INFO L482 AbstractCegarLoop]: Abstraction has 2039 states and 4907 transitions. [2021-06-05 05:50:47,124 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 3.1578947368421053) internal successors, (60), 18 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:47,124 INFO L276 IsEmpty]: Start isEmpty. Operand 2039 states and 4907 transitions. [2021-06-05 05:50:47,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 05:50:47,126 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:50:47,126 INFO L521 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:50:47,346 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-06-05 05:50:47,347 INFO L430 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:50:47,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:50:47,347 INFO L82 PathProgramCache]: Analyzing trace with hash -637516549, now seen corresponding path program 29 times [2021-06-05 05:50:47,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:50:47,347 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195300661] [2021-06-05 05:50:47,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:50:47,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:50:47,546 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 5 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:50:47,547 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:50:47,547 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195300661] [2021-06-05 05:50:47,547 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195300661] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:50:47,547 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1971426622] [2021-06-05 05:50:47,547 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 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:50:47,582 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-06-05 05:50:47,582 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:50:47,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 44 conjunts are in the unsatisfiable core [2021-06-05 05:50:47,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:50:47,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:47,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:47,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:47,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:47,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:47,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:47,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:47,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:47,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:47,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:47,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:47,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:47,907 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:50:47,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:47,908 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 36 [2021-06-05 05:50:47,910 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:50:47,916 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:50:47,917 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:50:47,917 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:96, output treesize:7 [2021-06-05 05:50:47,929 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 5 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:50:47,929 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1971426622] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:50:47,929 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:50:47,929 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 18 [2021-06-05 05:50:47,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678866787] [2021-06-05 05:50:47,929 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 05:50:47,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:50:47,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 05:50:47,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2021-06-05 05:50:47,930 INFO L87 Difference]: Start difference. First operand 2039 states and 4907 transitions. Second operand has 19 states, 19 states have (on average 3.1578947368421053) internal successors, (60), 18 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:48,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:50:48,528 INFO L93 Difference]: Finished difference Result 4059 states and 9831 transitions. [2021-06-05 05:50:48,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-05 05:50:48,529 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.1578947368421053) internal successors, (60), 18 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 05:50:48,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:50:48,532 INFO L225 Difference]: With dead ends: 4059 [2021-06-05 05:50:48,532 INFO L226 Difference]: Without dead ends: 3783 [2021-06-05 05:50:48,533 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 38 SyntacticMatches, 5 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 644.9ms TimeCoverageRelationStatistics Valid=148, Invalid=974, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 05:50:48,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3783 states. [2021-06-05 05:50:48,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3783 to 2055. [2021-06-05 05:50:48,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2055 states, 2054 states have (on average 2.408471275559883) internal successors, (4947), 2054 states have internal predecessors, (4947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:48,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2055 states to 2055 states and 4947 transitions. [2021-06-05 05:50:48,564 INFO L78 Accepts]: Start accepts. Automaton has 2055 states and 4947 transitions. Word has length 47 [2021-06-05 05:50:48,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:50:48,564 INFO L482 AbstractCegarLoop]: Abstraction has 2055 states and 4947 transitions. [2021-06-05 05:50:48,564 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 3.1578947368421053) internal successors, (60), 18 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:48,564 INFO L276 IsEmpty]: Start isEmpty. Operand 2055 states and 4947 transitions. [2021-06-05 05:50:48,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 05:50:48,567 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:50:48,567 INFO L521 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:50:48,780 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-06-05 05:50:48,781 INFO L430 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:50:48,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:50:48,781 INFO L82 PathProgramCache]: Analyzing trace with hash 1587812603, now seen corresponding path program 30 times [2021-06-05 05:50:48,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:50:48,781 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241474322] [2021-06-05 05:50:48,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:50:48,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:50:48,996 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 5 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:50:48,996 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:50:48,996 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241474322] [2021-06-05 05:50:48,996 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241474322] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:50:48,996 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2091442555] [2021-06-05 05:50:48,996 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 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:50:49,038 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-06-05 05:50:49,039 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:50:49,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 42 conjunts are in the unsatisfiable core [2021-06-05 05:50:49,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:50:49,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:49,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:49,349 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:50:49,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:49,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:49,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:49,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:49,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:49,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:49,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:49,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:49,354 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 36 [2021-06-05 05:50:49,355 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:50:49,360 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:50:49,361 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:50:49,361 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:96, output treesize:7 [2021-06-05 05:50:49,371 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 5 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:50:49,371 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2091442555] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:50:49,371 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:50:49,371 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 19 [2021-06-05 05:50:49,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144454466] [2021-06-05 05:50:49,371 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 05:50:49,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:50:49,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 05:50:49,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2021-06-05 05:50:49,372 INFO L87 Difference]: Start difference. First operand 2055 states and 4947 transitions. Second operand has 20 states, 20 states have (on average 3.0) internal successors, (60), 19 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:49,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:50:49,978 INFO L93 Difference]: Finished difference Result 3563 states and 8687 transitions. [2021-06-05 05:50:49,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-05 05:50:49,978 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.0) internal successors, (60), 19 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 05:50:49,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:50:49,981 INFO L225 Difference]: With dead ends: 3563 [2021-06-05 05:50:49,981 INFO L226 Difference]: Without dead ends: 3479 [2021-06-05 05:50:49,981 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 37 SyntacticMatches, 5 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 636.2ms TimeCoverageRelationStatistics Valid=160, Invalid=1030, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 05:50:49,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3479 states. [2021-06-05 05:50:50,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3479 to 2167. [2021-06-05 05:50:50,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2167 states, 2166 states have (on average 2.4132040627885503) internal successors, (5227), 2166 states have internal predecessors, (5227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:50,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2167 states to 2167 states and 5227 transitions. [2021-06-05 05:50:50,004 INFO L78 Accepts]: Start accepts. Automaton has 2167 states and 5227 transitions. Word has length 47 [2021-06-05 05:50:50,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:50:50,004 INFO L482 AbstractCegarLoop]: Abstraction has 2167 states and 5227 transitions. [2021-06-05 05:50:50,004 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 3.0) internal successors, (60), 19 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:50,004 INFO L276 IsEmpty]: Start isEmpty. Operand 2167 states and 5227 transitions. [2021-06-05 05:50:50,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 05:50:50,006 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:50:50,006 INFO L521 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:50:50,217 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-06-05 05:50:50,217 INFO L430 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:50:50,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:50:50,217 INFO L82 PathProgramCache]: Analyzing trace with hash -849198341, now seen corresponding path program 31 times [2021-06-05 05:50:50,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:50:50,218 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571607758] [2021-06-05 05:50:50,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:50:50,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:50:50,425 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 5 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:50:50,425 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:50:50,425 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571607758] [2021-06-05 05:50:50,426 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571607758] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:50:50,426 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1152932630] [2021-06-05 05:50:50,426 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 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:50:50,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:50:50,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 42 conjunts are in the unsatisfiable core [2021-06-05 05:50:50,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:50:50,706 INFO L354 Elim1Store]: treesize reduction 112, result has 0.9 percent of original size [2021-06-05 05:50:50,706 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 90 treesize of output 36 [2021-06-05 05:50:50,707 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:50:50,711 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:50:50,711 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:50:50,712 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:90, output treesize:7 [2021-06-05 05:50:50,724 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 5 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:50:50,724 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1152932630] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:50:50,724 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:50:50,724 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 18 [2021-06-05 05:50:50,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066250634] [2021-06-05 05:50:50,724 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 05:50:50,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:50:50,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 05:50:50,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2021-06-05 05:50:50,725 INFO L87 Difference]: Start difference. First operand 2167 states and 5227 transitions. Second operand has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 18 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:51,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:50:51,316 INFO L93 Difference]: Finished difference Result 3035 states and 7367 transitions. [2021-06-05 05:50:51,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-05 05:50:51,317 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 18 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 05:50:51,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:50:51,319 INFO L225 Difference]: With dead ends: 3035 [2021-06-05 05:50:51,319 INFO L226 Difference]: Without dead ends: 2999 [2021-06-05 05:50:51,319 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 37 SyntacticMatches, 6 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 571.6ms TimeCoverageRelationStatistics Valid=144, Invalid=912, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 05:50:51,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2999 states. [2021-06-05 05:50:51,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2999 to 2199. [2021-06-05 05:50:51,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2199 states, 2198 states have (on average 2.414467697907188) internal successors, (5307), 2198 states have internal predecessors, (5307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:51,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2199 states to 2199 states and 5307 transitions. [2021-06-05 05:50:51,339 INFO L78 Accepts]: Start accepts. Automaton has 2199 states and 5307 transitions. Word has length 47 [2021-06-05 05:50:51,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:50:51,339 INFO L482 AbstractCegarLoop]: Abstraction has 2199 states and 5307 transitions. [2021-06-05 05:50:51,339 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 18 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:51,339 INFO L276 IsEmpty]: Start isEmpty. Operand 2199 states and 5307 transitions. [2021-06-05 05:50:51,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-06-05 05:50:51,341 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:50:51,341 INFO L521 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:50:51,542 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-06-05 05:50:51,542 INFO L430 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:50:51,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:50:51,542 INFO L82 PathProgramCache]: Analyzing trace with hash 1873760509, now seen corresponding path program 32 times [2021-06-05 05:50:51,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:50:51,542 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315557433] [2021-06-05 05:50:51,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:50:51,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:50:51,578 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 32 proven. 38 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-06-05 05:50:51,578 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:50:51,578 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315557433] [2021-06-05 05:50:51,578 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315557433] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:50:51,578 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1137080174] [2021-06-05 05:50:51,578 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 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:50:51,612 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 05:50:51,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:50:51,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-05 05:50:51,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:50:51,681 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 32 proven. 37 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-06-05 05:50:51,682 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1137080174] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:50:51,682 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:50:51,682 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 7 [2021-06-05 05:50:51,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110542527] [2021-06-05 05:50:51,682 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 05:50:51,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:50:51,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 05:50:51,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-06-05 05:50:51,683 INFO L87 Difference]: Start difference. First operand 2199 states and 5307 transitions. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:51,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:50:51,714 INFO L93 Difference]: Finished difference Result 3179 states and 7642 transitions. [2021-06-05 05:50:51,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 05:50:51,715 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-06-05 05:50:51,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:50:51,718 INFO L225 Difference]: With dead ends: 3179 [2021-06-05 05:50:51,718 INFO L226 Difference]: Without dead ends: 3171 [2021-06-05 05:50:51,719 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 21.9ms TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-06-05 05:50:51,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3171 states. [2021-06-05 05:50:51,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3171 to 2767. [2021-06-05 05:50:51,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2767 states, 2766 states have (on average 2.447939262472885) internal successors, (6771), 2766 states have internal predecessors, (6771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:51,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2767 states to 2767 states and 6771 transitions. [2021-06-05 05:50:51,752 INFO L78 Accepts]: Start accepts. Automaton has 2767 states and 6771 transitions. Word has length 49 [2021-06-05 05:50:51,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:50:51,752 INFO L482 AbstractCegarLoop]: Abstraction has 2767 states and 6771 transitions. [2021-06-05 05:50:51,753 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:51,753 INFO L276 IsEmpty]: Start isEmpty. Operand 2767 states and 6771 transitions. [2021-06-05 05:50:51,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-06-05 05:50:51,756 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:50:51,756 INFO L521 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:50:51,979 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-06-05 05:50:51,979 INFO L430 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:50:51,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:50:51,979 INFO L82 PathProgramCache]: Analyzing trace with hash 2040143101, now seen corresponding path program 33 times [2021-06-05 05:50:51,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:50:51,979 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864814523] [2021-06-05 05:50:51,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:50:51,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:50:52,022 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 36 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:50:52,022 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:50:52,022 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864814523] [2021-06-05 05:50:52,022 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864814523] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:50:52,022 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909414142] [2021-06-05 05:50:52,022 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 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:50:52,062 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-06-05 05:50:52,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:50:52,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-05 05:50:52,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:50:52,131 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 36 proven. 38 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:50:52,131 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1909414142] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:50:52,131 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:50:52,131 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 8 [2021-06-05 05:50:52,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763853497] [2021-06-05 05:50:52,131 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 05:50:52,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:50:52,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 05:50:52,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-06-05 05:50:52,132 INFO L87 Difference]: Start difference. First operand 2767 states and 6771 transitions. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:52,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:50:52,167 INFO L93 Difference]: Finished difference Result 4039 states and 9821 transitions. [2021-06-05 05:50:52,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 05:50:52,168 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-06-05 05:50:52,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:50:52,171 INFO L225 Difference]: With dead ends: 4039 [2021-06-05 05:50:52,171 INFO L226 Difference]: Without dead ends: 4031 [2021-06-05 05:50:52,171 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 28.4ms TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-06-05 05:50:52,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4031 states. [2021-06-05 05:50:52,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4031 to 2975. [2021-06-05 05:50:52,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2975 states, 2974 states have (on average 2.456960322797579) internal successors, (7307), 2974 states have internal predecessors, (7307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:52,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2975 states to 2975 states and 7307 transitions. [2021-06-05 05:50:52,197 INFO L78 Accepts]: Start accepts. Automaton has 2975 states and 7307 transitions. Word has length 49 [2021-06-05 05:50:52,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:50:52,197 INFO L482 AbstractCegarLoop]: Abstraction has 2975 states and 7307 transitions. [2021-06-05 05:50:52,197 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:52,197 INFO L276 IsEmpty]: Start isEmpty. Operand 2975 states and 7307 transitions. [2021-06-05 05:50:52,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-06-05 05:50:52,199 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:50:52,199 INFO L521 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:50:52,400 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-06-05 05:50:52,401 INFO L430 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:50:52,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:50:52,401 INFO L82 PathProgramCache]: Analyzing trace with hash -1607749511, now seen corresponding path program 34 times [2021-06-05 05:50:52,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:50:52,401 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000721780] [2021-06-05 05:50:52,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:50:52,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:50:52,630 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 6 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:50:52,630 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:50:52,630 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000721780] [2021-06-05 05:50:52,630 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000721780] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:50:52,631 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2101319866] [2021-06-05 05:50:52,631 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 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:50:52,666 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 05:50:52,666 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:50:52,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 50 conjunts are in the unsatisfiable core [2021-06-05 05:50:52,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:50:53,210 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:50:53,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:53,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:53,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:53,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:53,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:53,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:53,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:53,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:53,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:53,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:53,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:53,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:53,218 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:50:53,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:53,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:53,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:53,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:53,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:53,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:53,222 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:50:53,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:53,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:53,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:53,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:53,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:53,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:53,226 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:50:53,227 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:50:53,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:53,228 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 11 select indices, 11 select index equivalence classes, 15 disjoint index pairs (out of 55 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 43 [2021-06-05 05:50:53,230 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:50:53,234 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:50:53,235 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:50:53,235 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:115, output treesize:7 [2021-06-05 05:50:53,253 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 6 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:50:53,253 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2101319866] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:50:53,253 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:50:53,253 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16] total 25 [2021-06-05 05:50:53,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623884593] [2021-06-05 05:50:53,254 INFO L462 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-06-05 05:50:53,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:50:53,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-06-05 05:50:53,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=565, Unknown=0, NotChecked=0, Total=650 [2021-06-05 05:50:53,254 INFO L87 Difference]: Start difference. First operand 2975 states and 7307 transitions. Second operand has 26 states, 26 states have (on average 3.230769230769231) internal successors, (84), 25 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:54,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:50:54,411 INFO L93 Difference]: Finished difference Result 6999 states and 17467 transitions. [2021-06-05 05:50:54,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-05 05:50:54,412 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.230769230769231) internal successors, (84), 25 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-06-05 05:50:54,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:50:54,416 INFO L225 Difference]: With dead ends: 6999 [2021-06-05 05:50:54,417 INFO L226 Difference]: Without dead ends: 6863 [2021-06-05 05:50:54,417 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 500 ImplicationChecksByTransitivity, 896.8ms TimeCoverageRelationStatistics Valid=222, Invalid=1758, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 05:50:54,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6863 states. [2021-06-05 05:50:54,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6863 to 3231. [2021-06-05 05:50:54,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3231 states, 3230 states have (on average 2.4554179566563468) internal successors, (7931), 3230 states have internal predecessors, (7931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:54,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3231 states to 3231 states and 7931 transitions. [2021-06-05 05:50:54,459 INFO L78 Accepts]: Start accepts. Automaton has 3231 states and 7931 transitions. Word has length 53 [2021-06-05 05:50:54,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:50:54,459 INFO L482 AbstractCegarLoop]: Abstraction has 3231 states and 7931 transitions. [2021-06-05 05:50:54,459 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 3.230769230769231) internal successors, (84), 25 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:54,459 INFO L276 IsEmpty]: Start isEmpty. Operand 3231 states and 7931 transitions. [2021-06-05 05:50:54,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-06-05 05:50:54,462 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:50:54,462 INFO L521 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:50:54,664 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2021-06-05 05:50:54,664 INFO L430 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:50:54,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:50:54,664 INFO L82 PathProgramCache]: Analyzing trace with hash -1426435463, now seen corresponding path program 35 times [2021-06-05 05:50:54,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:50:54,664 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095867961] [2021-06-05 05:50:54,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:50:54,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:50:54,923 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 6 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:50:54,923 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:50:54,923 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095867961] [2021-06-05 05:50:54,923 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095867961] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:50:54,924 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413512458] [2021-06-05 05:50:54,924 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:50:54,992 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-06-05 05:50:54,992 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:50:54,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 50 conjunts are in the unsatisfiable core [2021-06-05 05:50:54,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:50:55,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:55,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:55,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:55,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:55,511 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:50:55,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:55,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:55,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:55,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:55,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:55,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:55,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:55,516 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:50:55,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:55,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:55,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:55,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:55,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:55,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:55,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:55,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:55,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:55,522 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:50:55,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:55,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:55,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:55,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:55,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:55,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:55,526 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:50:55,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:55,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:55,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:55,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:55,529 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:50:55,530 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:50:55,530 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 15 disjoint index pairs (out of 66 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 34 [2021-06-05 05:50:55,531 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:50:55,535 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:50:55,536 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:50:55,536 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:86, output treesize:3 [2021-06-05 05:50:55,558 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 6 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:50:55,558 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1413512458] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:50:55,558 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:50:55,559 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 29 [2021-06-05 05:50:55,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131894486] [2021-06-05 05:50:55,559 INFO L462 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-06-05 05:50:55,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:50:55,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-06-05 05:50:55,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=765, Unknown=0, NotChecked=0, Total=870 [2021-06-05 05:50:55,561 INFO L87 Difference]: Start difference. First operand 3231 states and 7931 transitions. Second operand has 30 states, 30 states have (on average 3.2) internal successors, (96), 29 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:56,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:50:56,566 INFO L93 Difference]: Finished difference Result 6839 states and 17099 transitions. [2021-06-05 05:50:56,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-05 05:50:56,566 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.2) internal successors, (96), 29 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-06-05 05:50:56,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:50:56,573 INFO L225 Difference]: With dead ends: 6839 [2021-06-05 05:50:56,573 INFO L226 Difference]: Without dead ends: 6703 [2021-06-05 05:50:56,573 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 628 ImplicationChecksByTransitivity, 963.6ms TimeCoverageRelationStatistics Valid=247, Invalid=2105, Unknown=0, NotChecked=0, Total=2352 [2021-06-05 05:50:56,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6703 states. [2021-06-05 05:50:56,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6703 to 2751. [2021-06-05 05:50:56,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2751 states, 2750 states have (on average 2.4592727272727273) internal successors, (6763), 2750 states have internal predecessors, (6763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:56,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2751 states to 2751 states and 6763 transitions. [2021-06-05 05:50:56,608 INFO L78 Accepts]: Start accepts. Automaton has 2751 states and 6763 transitions. Word has length 53 [2021-06-05 05:50:56,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:50:56,608 INFO L482 AbstractCegarLoop]: Abstraction has 2751 states and 6763 transitions. [2021-06-05 05:50:56,608 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 3.2) internal successors, (96), 29 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:56,608 INFO L276 IsEmpty]: Start isEmpty. Operand 2751 states and 6763 transitions. [2021-06-05 05:50:56,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-06-05 05:50:56,610 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:50:56,610 INFO L521 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:50:56,811 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:50:56,811 INFO L430 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:50:56,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:50:56,811 INFO L82 PathProgramCache]: Analyzing trace with hash -602883975, now seen corresponding path program 36 times [2021-06-05 05:50:56,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:50:56,811 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681985187] [2021-06-05 05:50:56,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:50:56,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:50:57,037 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 6 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:50:57,038 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:50:57,038 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681985187] [2021-06-05 05:50:57,038 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681985187] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:50:57,038 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070922498] [2021-06-05 05:50:57,038 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 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:50:57,074 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-06-05 05:50:57,075 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:50:57,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 50 conjunts are in the unsatisfiable core [2021-06-05 05:50:57,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:50:57,607 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:50:57,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:57,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:57,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:57,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:57,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:57,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:57,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:57,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:57,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:57,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:57,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:57,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:57,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:57,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:57,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:57,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:57,618 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:50:57,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:57,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:57,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:57,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:57,621 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:50:57,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:57,622 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:50:57,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:57,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:57,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:57,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:57,625 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:50:57,626 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 11 select indices, 11 select index equivalence classes, 15 disjoint index pairs (out of 55 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 43 [2021-06-05 05:50:57,627 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:50:57,632 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:50:57,633 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:50:57,633 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:115, output treesize:7 [2021-06-05 05:50:57,644 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 6 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:50:57,644 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1070922498] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:50:57,645 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:50:57,645 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16] total 24 [2021-06-05 05:50:57,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515817590] [2021-06-05 05:50:57,645 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 05:50:57,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:50:57,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 05:50:57,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2021-06-05 05:50:57,645 INFO L87 Difference]: Start difference. First operand 2751 states and 6763 transitions. Second operand has 25 states, 25 states have (on average 3.36) internal successors, (84), 24 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:58,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:50:58,414 INFO L93 Difference]: Finished difference Result 5519 states and 13767 transitions. [2021-06-05 05:50:58,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-05 05:50:58,414 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.36) internal successors, (84), 24 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-06-05 05:50:58,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:50:58,419 INFO L225 Difference]: With dead ends: 5519 [2021-06-05 05:50:58,420 INFO L226 Difference]: Without dead ends: 5231 [2021-06-05 05:50:58,420 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 381 ImplicationChecksByTransitivity, 862.3ms TimeCoverageRelationStatistics Valid=180, Invalid=1380, Unknown=0, NotChecked=0, Total=1560 [2021-06-05 05:50:58,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5231 states. [2021-06-05 05:50:58,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5231 to 2911. [2021-06-05 05:50:58,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2911 states, 2910 states have (on average 2.4560137457044675) internal successors, (7147), 2910 states have internal predecessors, (7147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:58,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2911 states to 2911 states and 7147 transitions. [2021-06-05 05:50:58,455 INFO L78 Accepts]: Start accepts. Automaton has 2911 states and 7147 transitions. Word has length 53 [2021-06-05 05:50:58,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:50:58,455 INFO L482 AbstractCegarLoop]: Abstraction has 2911 states and 7147 transitions. [2021-06-05 05:50:58,455 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.36) internal successors, (84), 24 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:50:58,456 INFO L276 IsEmpty]: Start isEmpty. Operand 2911 states and 7147 transitions. [2021-06-05 05:50:58,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-06-05 05:50:58,458 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:50:58,458 INFO L521 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:50:58,659 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,40 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:50:58,659 INFO L430 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:50:58,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:50:58,659 INFO L82 PathProgramCache]: Analyzing trace with hash -627868551, now seen corresponding path program 37 times [2021-06-05 05:50:58,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:50:58,659 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919446731] [2021-06-05 05:50:58,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:50:58,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:50:58,935 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 6 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:50:58,935 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:50:58,936 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919446731] [2021-06-05 05:50:58,936 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919446731] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:50:58,936 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157904319] [2021-06-05 05:50:58,936 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 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:50:58,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:50:58,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 50 conjunts are in the unsatisfiable core [2021-06-05 05:50:58,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:50:59,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:59,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:59,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:59,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:59,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:59,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:59,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:59,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:59,519 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:50:59,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:59,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:59,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:59,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:59,522 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:50:59,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:59,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:59,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:59,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:59,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:59,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:59,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:59,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:59,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:59,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:59,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:59,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:59,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:59,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:59,531 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:50:59,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:59,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:50:59,533 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:50:59,534 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:50:59,534 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 11 select indices, 11 select index equivalence classes, 15 disjoint index pairs (out of 55 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 43 [2021-06-05 05:50:59,535 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:50:59,540 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:50:59,541 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:50:59,541 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:115, output treesize:7 [2021-06-05 05:50:59,551 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 6 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:50:59,551 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157904319] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:50:59,551 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:50:59,551 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 26 [2021-06-05 05:50:59,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614652100] [2021-06-05 05:50:59,551 INFO L462 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-06-05 05:50:59,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:50:59,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-06-05 05:50:59,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=612, Unknown=0, NotChecked=0, Total=702 [2021-06-05 05:50:59,552 INFO L87 Difference]: Start difference. First operand 2911 states and 7147 transitions. Second operand has 27 states, 27 states have (on average 3.111111111111111) internal successors, (84), 26 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:51:00,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:51:00,206 INFO L93 Difference]: Finished difference Result 5847 states and 14547 transitions. [2021-06-05 05:51:00,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-05 05:51:00,207 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.111111111111111) internal successors, (84), 26 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-06-05 05:51:00,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:51:00,212 INFO L225 Difference]: With dead ends: 5847 [2021-06-05 05:51:00,212 INFO L226 Difference]: Without dead ends: 5759 [2021-06-05 05:51:00,212 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 426 ImplicationChecksByTransitivity, 903.6ms TimeCoverageRelationStatistics Valid=201, Invalid=1605, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 05:51:00,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5759 states. [2021-06-05 05:51:00,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5759 to 2879. [2021-06-05 05:51:00,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2879 states, 2878 states have (on average 2.4555246699096593) internal successors, (7067), 2878 states have internal predecessors, (7067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:51:00,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2879 states to 2879 states and 7067 transitions. [2021-06-05 05:51:00,282 INFO L78 Accepts]: Start accepts. Automaton has 2879 states and 7067 transitions. Word has length 53 [2021-06-05 05:51:00,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:51:00,282 INFO L482 AbstractCegarLoop]: Abstraction has 2879 states and 7067 transitions. [2021-06-05 05:51:00,282 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 3.111111111111111) internal successors, (84), 26 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:51:00,282 INFO L276 IsEmpty]: Start isEmpty. Operand 2879 states and 7067 transitions. [2021-06-05 05:51:00,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-06-05 05:51:00,285 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:51:00,286 INFO L521 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:51:00,500 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:51:00,501 INFO L430 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:51:00,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:51:00,501 INFO L82 PathProgramCache]: Analyzing trace with hash 656678521, now seen corresponding path program 38 times [2021-06-05 05:51:00,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:51:00,501 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496126469] [2021-06-05 05:51:00,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:51:00,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:51:00,765 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 6 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:51:00,766 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:51:00,766 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496126469] [2021-06-05 05:51:00,766 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496126469] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:51:00,766 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228531100] [2021-06-05 05:51:00,766 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 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:51:00,807 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 05:51:00,807 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:51:00,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 50 conjunts are in the unsatisfiable core [2021-06-05 05:51:00,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:51:01,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:01,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:01,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:01,278 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:01,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:01,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:01,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:01,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:01,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:01,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:01,282 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:01,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:01,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:01,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:01,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:01,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:01,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:01,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:01,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:01,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:01,288 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:01,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:01,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:01,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:01,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:01,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:01,292 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:01,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:01,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:01,293 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:01,294 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 11 select indices, 11 select index equivalence classes, 15 disjoint index pairs (out of 55 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 43 [2021-06-05 05:51:01,295 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:51:01,300 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:51:01,301 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:51:01,301 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:115, output treesize:7 [2021-06-05 05:51:01,311 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 6 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:51:01,311 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1228531100] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:51:01,311 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:51:01,311 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 26 [2021-06-05 05:51:01,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923286668] [2021-06-05 05:51:01,312 INFO L462 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-06-05 05:51:01,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:51:01,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-06-05 05:51:01,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=612, Unknown=0, NotChecked=0, Total=702 [2021-06-05 05:51:01,312 INFO L87 Difference]: Start difference. First operand 2879 states and 7067 transitions. Second operand has 27 states, 27 states have (on average 3.111111111111111) internal successors, (84), 26 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:51:02,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:51:02,175 INFO L93 Difference]: Finished difference Result 4567 states and 11291 transitions. [2021-06-05 05:51:02,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-05 05:51:02,176 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.111111111111111) internal successors, (84), 26 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-06-05 05:51:02,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:51:02,179 INFO L225 Difference]: With dead ends: 4567 [2021-06-05 05:51:02,179 INFO L226 Difference]: Without dead ends: 4527 [2021-06-05 05:51:02,179 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 402 ImplicationChecksByTransitivity, 814.5ms TimeCoverageRelationStatistics Valid=191, Invalid=1531, Unknown=0, NotChecked=0, Total=1722 [2021-06-05 05:51:02,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4527 states. [2021-06-05 05:51:02,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4527 to 2911. [2021-06-05 05:51:02,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2911 states, 2910 states have (on average 2.4560137457044675) internal successors, (7147), 2910 states have internal predecessors, (7147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:51:02,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2911 states to 2911 states and 7147 transitions. [2021-06-05 05:51:02,220 INFO L78 Accepts]: Start accepts. Automaton has 2911 states and 7147 transitions. Word has length 53 [2021-06-05 05:51:02,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:51:02,220 INFO L482 AbstractCegarLoop]: Abstraction has 2911 states and 7147 transitions. [2021-06-05 05:51:02,220 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 3.111111111111111) internal successors, (84), 26 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:51:02,220 INFO L276 IsEmpty]: Start isEmpty. Operand 2911 states and 7147 transitions. [2021-06-05 05:51:02,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-06-05 05:51:02,223 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:51:02,224 INFO L521 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:51:02,446 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2021-06-05 05:51:02,446 INFO L430 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:51:02,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:51:02,447 INFO L82 PathProgramCache]: Analyzing trace with hash -159589767, now seen corresponding path program 39 times [2021-06-05 05:51:02,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:51:02,447 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384823832] [2021-06-05 05:51:02,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:51:02,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:51:02,688 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 6 proven. 84 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-06-05 05:51:02,688 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:51:02,688 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384823832] [2021-06-05 05:51:02,688 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384823832] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:51:02,688 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988828942] [2021-06-05 05:51:02,688 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 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:51:02,729 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-06-05 05:51:02,729 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:51:02,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 50 conjunts are in the unsatisfiable core [2021-06-05 05:51:02,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:51:03,210 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:03,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:03,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:03,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:03,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:03,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:03,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:03,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:03,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:03,220 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:03,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:03,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:03,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:03,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:03,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:03,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:03,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:03,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:03,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:03,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:03,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:03,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:03,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:03,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:03,233 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:03,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:03,234 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:03,235 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 15 disjoint index pairs (out of 45 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 43 [2021-06-05 05:51:03,236 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:51:03,243 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:51:03,244 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:51:03,244 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:115, output treesize:7 [2021-06-05 05:51:03,259 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 9 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:51:03,259 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1988828942] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:51:03,259 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:51:03,260 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16] total 23 [2021-06-05 05:51:03,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586858345] [2021-06-05 05:51:03,260 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-06-05 05:51:03,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:51:03,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-06-05 05:51:03,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=476, Unknown=0, NotChecked=0, Total=552 [2021-06-05 05:51:03,261 INFO L87 Difference]: Start difference. First operand 2911 states and 7147 transitions. Second operand has 24 states, 24 states have (on average 3.25) internal successors, (78), 23 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:51:04,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:51:04,559 INFO L93 Difference]: Finished difference Result 6415 states and 15812 transitions. [2021-06-05 05:51:04,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-05 05:51:04,559 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.25) internal successors, (78), 23 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-06-05 05:51:04,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:51:04,564 INFO L225 Difference]: With dead ends: 6415 [2021-06-05 05:51:04,564 INFO L226 Difference]: Without dead ends: 6007 [2021-06-05 05:51:04,565 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 43 SyntacticMatches, 3 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 534 ImplicationChecksByTransitivity, 1178.3ms TimeCoverageRelationStatistics Valid=259, Invalid=1903, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 05:51:04,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6007 states. [2021-06-05 05:51:04,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6007 to 3503. [2021-06-05 05:51:04,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3503 states, 3502 states have (on average 2.454311821816105) internal successors, (8595), 3502 states have internal predecessors, (8595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:51:04,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3503 states to 3503 states and 8595 transitions. [2021-06-05 05:51:04,606 INFO L78 Accepts]: Start accepts. Automaton has 3503 states and 8595 transitions. Word has length 53 [2021-06-05 05:51:04,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:51:04,606 INFO L482 AbstractCegarLoop]: Abstraction has 3503 states and 8595 transitions. [2021-06-05 05:51:04,606 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 3.25) internal successors, (78), 23 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:51:04,606 INFO L276 IsEmpty]: Start isEmpty. Operand 3503 states and 8595 transitions. [2021-06-05 05:51:04,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-06-05 05:51:04,609 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:51:04,609 INFO L521 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:51:04,810 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:51:04,811 INFO L430 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:51:04,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:51:04,811 INFO L82 PathProgramCache]: Analyzing trace with hash -184574343, now seen corresponding path program 40 times [2021-06-05 05:51:04,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:51:04,811 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510375851] [2021-06-05 05:51:04,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:51:04,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:51:05,073 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 6 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:51:05,074 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:51:05,074 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510375851] [2021-06-05 05:51:05,074 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510375851] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:51:05,074 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761456172] [2021-06-05 05:51:05,074 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 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:51:05,109 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 05:51:05,110 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:51:05,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 50 conjunts are in the unsatisfiable core [2021-06-05 05:51:05,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:51:05,513 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:05,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:05,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:05,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:05,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:05,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:05,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:05,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:05,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:05,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:05,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:05,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:05,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:05,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:05,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:05,522 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:05,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:05,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:05,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:05,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:05,525 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:05,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:05,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:05,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:05,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:05,528 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:05,529 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 15 disjoint index pairs (out of 45 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 43 [2021-06-05 05:51:05,530 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:51:05,535 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:51:05,536 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:51:05,536 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:115, output treesize:7 [2021-06-05 05:51:05,546 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 6 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:51:05,546 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [761456172] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:51:05,546 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:51:05,546 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 25 [2021-06-05 05:51:05,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214293963] [2021-06-05 05:51:05,547 INFO L462 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-06-05 05:51:05,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:51:05,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-06-05 05:51:05,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=563, Unknown=0, NotChecked=0, Total=650 [2021-06-05 05:51:05,547 INFO L87 Difference]: Start difference. First operand 3503 states and 8595 transitions. Second operand has 26 states, 26 states have (on average 3.076923076923077) internal successors, (80), 25 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:51:06,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:51:06,424 INFO L93 Difference]: Finished difference Result 6639 states and 16432 transitions. [2021-06-05 05:51:06,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-05 05:51:06,425 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.076923076923077) internal successors, (80), 25 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-06-05 05:51:06,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:51:06,430 INFO L225 Difference]: With dead ends: 6639 [2021-06-05 05:51:06,430 INFO L226 Difference]: Without dead ends: 6551 [2021-06-05 05:51:06,431 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 41 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 450 ImplicationChecksByTransitivity, 856.6ms TimeCoverageRelationStatistics Valid=223, Invalid=1757, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 05:51:06,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6551 states. [2021-06-05 05:51:06,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6551 to 3455. [2021-06-05 05:51:06,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3455 states, 3454 states have (on average 2.4536768963520554) internal successors, (8475), 3454 states have internal predecessors, (8475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:51:06,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3455 states to 3455 states and 8475 transitions. [2021-06-05 05:51:06,474 INFO L78 Accepts]: Start accepts. Automaton has 3455 states and 8475 transitions. Word has length 53 [2021-06-05 05:51:06,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:51:06,474 INFO L482 AbstractCegarLoop]: Abstraction has 3455 states and 8475 transitions. [2021-06-05 05:51:06,474 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 3.076923076923077) internal successors, (80), 25 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:51:06,474 INFO L276 IsEmpty]: Start isEmpty. Operand 3455 states and 8475 transitions. [2021-06-05 05:51:06,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-06-05 05:51:06,478 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:51:06,478 INFO L521 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:51:06,678 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:51:06,678 INFO L430 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:51:06,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:51:06,678 INFO L82 PathProgramCache]: Analyzing trace with hash 1099972729, now seen corresponding path program 41 times [2021-06-05 05:51:06,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:51:06,679 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898499992] [2021-06-05 05:51:06,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:51:06,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:51:06,968 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 6 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:51:06,968 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:51:06,969 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898499992] [2021-06-05 05:51:06,969 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898499992] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:51:06,969 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744150709] [2021-06-05 05:51:06,969 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 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:51:07,011 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-06-05 05:51:07,011 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:51:07,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 52 conjunts are in the unsatisfiable core [2021-06-05 05:51:07,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:51:07,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:07,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:07,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:07,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:07,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:07,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:07,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:07,491 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:07,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:07,492 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:07,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:07,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:07,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:07,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:07,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:07,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:07,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:07,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:07,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:07,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:07,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:07,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:07,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:07,500 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:07,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:07,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:07,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:07,503 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:07,504 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 15 disjoint index pairs (out of 45 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 43 [2021-06-05 05:51:07,506 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:51:07,513 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:51:07,514 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:51:07,514 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:115, output treesize:7 [2021-06-05 05:51:07,527 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 6 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:51:07,528 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1744150709] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:51:07,528 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:51:07,528 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 25 [2021-06-05 05:51:07,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094189086] [2021-06-05 05:51:07,528 INFO L462 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-06-05 05:51:07,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:51:07,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-06-05 05:51:07,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=563, Unknown=0, NotChecked=0, Total=650 [2021-06-05 05:51:07,529 INFO L87 Difference]: Start difference. First operand 3455 states and 8475 transitions. Second operand has 26 states, 26 states have (on average 3.076923076923077) internal successors, (80), 25 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:51:08,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:51:08,483 INFO L93 Difference]: Finished difference Result 5815 states and 14356 transitions. [2021-06-05 05:51:08,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-05 05:51:08,484 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.076923076923077) internal successors, (80), 25 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-06-05 05:51:08,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:51:08,489 INFO L225 Difference]: With dead ends: 5815 [2021-06-05 05:51:08,489 INFO L226 Difference]: Without dead ends: 5463 [2021-06-05 05:51:08,490 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 41 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 931.6ms TimeCoverageRelationStatistics Valid=223, Invalid=1757, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 05:51:08,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5463 states. [2021-06-05 05:51:08,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5463 to 3647. [2021-06-05 05:51:08,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3647 states, 3646 states have (on average 2.453922106417992) internal successors, (8947), 3646 states have internal predecessors, (8947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:51:08,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3647 states to 3647 states and 8947 transitions. [2021-06-05 05:51:08,533 INFO L78 Accepts]: Start accepts. Automaton has 3647 states and 8947 transitions. Word has length 53 [2021-06-05 05:51:08,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:51:08,533 INFO L482 AbstractCegarLoop]: Abstraction has 3647 states and 8947 transitions. [2021-06-05 05:51:08,533 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 3.076923076923077) internal successors, (80), 25 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:51:08,533 INFO L276 IsEmpty]: Start isEmpty. Operand 3647 states and 8947 transitions. [2021-06-05 05:51:08,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-06-05 05:51:08,537 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:51:08,537 INFO L521 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:51:08,752 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2021-06-05 05:51:08,753 INFO L430 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:51:08,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:51:08,753 INFO L82 PathProgramCache]: Analyzing trace with hash 435643001, now seen corresponding path program 42 times [2021-06-05 05:51:08,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:51:08,753 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241724463] [2021-06-05 05:51:08,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:51:08,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:51:08,963 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 6 proven. 85 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-05 05:51:08,963 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:51:08,963 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241724463] [2021-06-05 05:51:08,963 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241724463] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:51:08,963 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909252772] [2021-06-05 05:51:08,963 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 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:51:09,002 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-06-05 05:51:09,002 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:51:09,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 50 conjunts are in the unsatisfiable core [2021-06-05 05:51:09,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:51:09,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:09,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:09,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:09,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:09,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:09,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:09,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:09,370 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:09,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:09,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:09,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:09,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:09,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:09,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:09,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:09,374 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:09,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:09,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:09,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:09,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:09,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:09,378 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:09,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:09,379 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 15 disjoint index pairs (out of 36 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 43 [2021-06-05 05:51:09,380 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:51:09,385 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:51:09,386 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:51:09,386 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:115, output treesize:7 [2021-06-05 05:51:09,395 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 8 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:51:09,395 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [909252772] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:51:09,396 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:51:09,396 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 16] total 21 [2021-06-05 05:51:09,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550541463] [2021-06-05 05:51:09,396 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-05 05:51:09,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:51:09,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-05 05:51:09,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2021-06-05 05:51:09,396 INFO L87 Difference]: Start difference. First operand 3647 states and 8947 transitions. Second operand has 22 states, 22 states have (on average 3.3636363636363638) internal successors, (74), 21 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:51:10,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:51:10,005 INFO L93 Difference]: Finished difference Result 5723 states and 14082 transitions. [2021-06-05 05:51:10,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-05 05:51:10,005 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.3636363636363638) internal successors, (74), 21 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-06-05 05:51:10,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:51:10,010 INFO L225 Difference]: With dead ends: 5723 [2021-06-05 05:51:10,010 INFO L226 Difference]: Without dead ends: 5623 [2021-06-05 05:51:10,011 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 44 SyntacticMatches, 4 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 716.1ms TimeCoverageRelationStatistics Valid=184, Invalid=1222, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 05:51:10,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5623 states. [2021-06-05 05:51:10,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5623 to 3775. [2021-06-05 05:51:10,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3775 states, 3774 states have (on average 2.452835188129306) internal successors, (9257), 3774 states have internal predecessors, (9257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:51:10,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3775 states to 3775 states and 9257 transitions. [2021-06-05 05:51:10,048 INFO L78 Accepts]: Start accepts. Automaton has 3775 states and 9257 transitions. Word has length 53 [2021-06-05 05:51:10,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:51:10,048 INFO L482 AbstractCegarLoop]: Abstraction has 3775 states and 9257 transitions. [2021-06-05 05:51:10,048 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 3.3636363636363638) internal successors, (74), 21 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:51:10,048 INFO L276 IsEmpty]: Start isEmpty. Operand 3775 states and 9257 transitions. [2021-06-05 05:51:10,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-06-05 05:51:10,050 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:51:10,050 INFO L521 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:51:10,252 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-06-05 05:51:10,253 INFO L430 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:51:10,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:51:10,253 INFO L82 PathProgramCache]: Analyzing trace with hash 188541561, now seen corresponding path program 43 times [2021-06-05 05:51:10,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:51:10,253 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425714547] [2021-06-05 05:51:10,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:51:10,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:51:10,533 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 6 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:51:10,534 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:51:10,534 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425714547] [2021-06-05 05:51:10,534 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425714547] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:51:10,534 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [350955552] [2021-06-05 05:51:10,534 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 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:51:10,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:51:10,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 50 conjunts are in the unsatisfiable core [2021-06-05 05:51:10,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:51:11,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:11,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:11,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:11,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:11,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:11,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:11,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:11,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:11,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:11,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:11,010 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:11,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:11,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:11,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:11,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:11,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:11,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:11,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:11,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:11,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:11,016 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:11,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:11,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:11,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:11,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:11,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:11,020 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:11,021 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 15 disjoint index pairs (out of 36 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 43 [2021-06-05 05:51:11,022 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:51:11,027 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:51:11,028 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:51:11,028 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:115, output treesize:7 [2021-06-05 05:51:11,038 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 6 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:51:11,038 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [350955552] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:51:11,038 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:51:11,038 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 24 [2021-06-05 05:51:11,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128736029] [2021-06-05 05:51:11,038 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 05:51:11,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:51:11,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 05:51:11,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=516, Unknown=0, NotChecked=0, Total=600 [2021-06-05 05:51:11,039 INFO L87 Difference]: Start difference. First operand 3775 states and 9257 transitions. Second operand has 25 states, 25 states have (on average 3.04) internal successors, (76), 24 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:51:11,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:51:11,860 INFO L93 Difference]: Finished difference Result 6759 states and 16692 transitions. [2021-06-05 05:51:11,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-05 05:51:11,861 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.04) internal successors, (76), 24 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-06-05 05:51:11,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:51:11,865 INFO L225 Difference]: With dead ends: 6759 [2021-06-05 05:51:11,865 INFO L226 Difference]: Without dead ends: 6695 [2021-06-05 05:51:11,865 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 41 SyntacticMatches, 4 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 384 ImplicationChecksByTransitivity, 839.0ms TimeCoverageRelationStatistics Valid=212, Invalid=1594, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 05:51:11,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6695 states. [2021-06-05 05:51:11,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6695 to 3759. [2021-06-05 05:51:11,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3759 states, 3758 states have (on average 2.452634379989356) internal successors, (9217), 3758 states have internal predecessors, (9217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:51:11,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3759 states to 3759 states and 9217 transitions. [2021-06-05 05:51:11,908 INFO L78 Accepts]: Start accepts. Automaton has 3759 states and 9217 transitions. Word has length 53 [2021-06-05 05:51:11,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:51:11,908 INFO L482 AbstractCegarLoop]: Abstraction has 3759 states and 9217 transitions. [2021-06-05 05:51:11,908 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.04) internal successors, (76), 24 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:51:11,908 INFO L276 IsEmpty]: Start isEmpty. Operand 3759 states and 9217 transitions. [2021-06-05 05:51:11,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-06-05 05:51:11,912 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:51:11,912 INFO L521 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:51:12,124 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-06-05 05:51:12,125 INFO L430 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:51:12,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:51:12,125 INFO L82 PathProgramCache]: Analyzing trace with hash 1784861305, now seen corresponding path program 44 times [2021-06-05 05:51:12,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:51:12,125 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870952235] [2021-06-05 05:51:12,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:51:12,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:51:12,315 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 6 proven. 84 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-06-05 05:51:12,315 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:51:12,315 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870952235] [2021-06-05 05:51:12,315 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870952235] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:51:12,315 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45130011] [2021-06-05 05:51:12,315 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 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:51:12,344 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 05:51:12,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:51:12,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 50 conjunts are in the unsatisfiable core [2021-06-05 05:51:12,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:51:12,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:12,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:12,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:12,680 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:12,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:12,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:12,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:12,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:12,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:12,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:12,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:12,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:12,686 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:12,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:12,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:12,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:12,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:12,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:12,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:12,690 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 15 disjoint index pairs (out of 28 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 43 [2021-06-05 05:51:12,691 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:51:12,696 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:51:12,697 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:51:12,697 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:115, output treesize:7 [2021-06-05 05:51:12,707 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 9 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:51:12,707 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45130011] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:51:12,707 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:51:12,707 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16] total 21 [2021-06-05 05:51:12,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333070801] [2021-06-05 05:51:12,707 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-05 05:51:12,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:51:12,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-05 05:51:12,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=394, Unknown=0, NotChecked=0, Total=462 [2021-06-05 05:51:12,708 INFO L87 Difference]: Start difference. First operand 3759 states and 9217 transitions. Second operand has 22 states, 22 states have (on average 3.1818181818181817) internal successors, (70), 21 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:51:13,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:51:13,978 INFO L93 Difference]: Finished difference Result 7151 states and 17562 transitions. [2021-06-05 05:51:13,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-05 05:51:13,979 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.1818181818181817) internal successors, (70), 21 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-06-05 05:51:13,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:51:13,985 INFO L225 Difference]: With dead ends: 7151 [2021-06-05 05:51:13,985 INFO L226 Difference]: Without dead ends: 6711 [2021-06-05 05:51:13,986 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 43 SyntacticMatches, 5 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 540 ImplicationChecksByTransitivity, 1037.8ms TimeCoverageRelationStatistics Valid=266, Invalid=1896, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 05:51:13,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6711 states. [2021-06-05 05:51:14,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6711 to 4175. [2021-06-05 05:51:14,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4175 states, 4174 states have (on average 2.4535218016291327) internal successors, (10241), 4174 states have internal predecessors, (10241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:51:14,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4175 states to 4175 states and 10241 transitions. [2021-06-05 05:51:14,034 INFO L78 Accepts]: Start accepts. Automaton has 4175 states and 10241 transitions. Word has length 53 [2021-06-05 05:51:14,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:51:14,034 INFO L482 AbstractCegarLoop]: Abstraction has 4175 states and 10241 transitions. [2021-06-05 05:51:14,034 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 3.1818181818181817) internal successors, (70), 21 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:51:14,034 INFO L276 IsEmpty]: Start isEmpty. Operand 4175 states and 10241 transitions. [2021-06-05 05:51:14,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-06-05 05:51:14,037 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:51:14,037 INFO L521 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:51:14,237 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:51:14,238 INFO L430 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:51:14,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:51:14,238 INFO L82 PathProgramCache]: Analyzing trace with hash 2081184377, now seen corresponding path program 45 times [2021-06-05 05:51:14,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:51:14,238 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164838798] [2021-06-05 05:51:14,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:51:14,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:51:14,433 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 6 proven. 83 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-06-05 05:51:14,433 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:51:14,433 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164838798] [2021-06-05 05:51:14,433 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164838798] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:51:14,433 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1992162387] [2021-06-05 05:51:14,433 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 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:51:14,462 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-06-05 05:51:14,462 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:51:14,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 50 conjunts are in the unsatisfiable core [2021-06-05 05:51:14,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:51:14,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:14,814 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:14,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:14,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:14,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:14,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:14,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:14,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:14,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:14,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:14,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:14,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:14,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:14,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:14,825 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:14,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:14,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:14,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:14,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:14,829 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 15 disjoint index pairs (out of 28 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 43 [2021-06-05 05:51:14,830 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:51:14,835 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:51:14,836 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:51:14,837 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:115, output treesize:7 [2021-06-05 05:51:14,846 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 10 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:51:14,846 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1992162387] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:51:14,847 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:51:14,847 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 16] total 20 [2021-06-05 05:51:14,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913615856] [2021-06-05 05:51:14,847 INFO L462 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-06-05 05:51:14,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:51:14,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-06-05 05:51:14,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2021-06-05 05:51:14,848 INFO L87 Difference]: Start difference. First operand 4175 states and 10241 transitions. Second operand has 21 states, 21 states have (on average 3.238095238095238) internal successors, (68), 20 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:51:15,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:51:15,631 INFO L93 Difference]: Finished difference Result 6651 states and 16395 transitions. [2021-06-05 05:51:15,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-05 05:51:15,631 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.238095238095238) internal successors, (68), 20 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-06-05 05:51:15,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:51:15,637 INFO L225 Difference]: With dead ends: 6651 [2021-06-05 05:51:15,637 INFO L226 Difference]: Without dead ends: 6575 [2021-06-05 05:51:15,638 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 44 SyntacticMatches, 5 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 670.7ms TimeCoverageRelationStatistics Valid=181, Invalid=1225, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 05:51:15,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6575 states. [2021-06-05 05:51:15,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6575 to 4335. [2021-06-05 05:51:15,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4335 states, 4334 states have (on average 2.45523765574527) internal successors, (10641), 4334 states have internal predecessors, (10641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:51:15,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4335 states to 4335 states and 10641 transitions. [2021-06-05 05:51:15,685 INFO L78 Accepts]: Start accepts. Automaton has 4335 states and 10641 transitions. Word has length 53 [2021-06-05 05:51:15,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:51:15,685 INFO L482 AbstractCegarLoop]: Abstraction has 4335 states and 10641 transitions. [2021-06-05 05:51:15,685 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 3.238095238095238) internal successors, (68), 20 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:51:15,685 INFO L276 IsEmpty]: Start isEmpty. Operand 4335 states and 10641 transitions. [2021-06-05 05:51:15,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-06-05 05:51:15,688 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:51:15,688 INFO L521 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:51:15,900 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,49 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:51:15,901 INFO L430 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:51:15,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:51:15,901 INFO L82 PathProgramCache]: Analyzing trace with hash -1415216007, now seen corresponding path program 46 times [2021-06-05 05:51:15,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:51:15,901 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903470178] [2021-06-05 05:51:15,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:51:15,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:51:16,154 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 6 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:51:16,154 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:51:16,155 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903470178] [2021-06-05 05:51:16,155 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903470178] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:51:16,155 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566991941] [2021-06-05 05:51:16,155 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 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:51:16,182 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 05:51:16,183 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:51:16,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 50 conjunts are in the unsatisfiable core [2021-06-05 05:51:16,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:51:16,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:16,511 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:16,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:16,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:16,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:16,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:16,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:16,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:16,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:16,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:16,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:16,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:16,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:16,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:16,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:16,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:16,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:16,522 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:16,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:16,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:16,524 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 15 disjoint index pairs (out of 28 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 43 [2021-06-05 05:51:16,525 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:51:16,532 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:51:16,533 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:51:16,533 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:115, output treesize:7 [2021-06-05 05:51:16,543 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 6 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:51:16,543 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1566991941] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:51:16,543 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:51:16,543 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16] total 21 [2021-06-05 05:51:16,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25297548] [2021-06-05 05:51:16,543 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-05 05:51:16,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:51:16,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-05 05:51:16,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2021-06-05 05:51:16,544 INFO L87 Difference]: Start difference. First operand 4335 states and 10641 transitions. Second operand has 22 states, 22 states have (on average 3.272727272727273) internal successors, (72), 21 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:51:17,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:51:17,390 INFO L93 Difference]: Finished difference Result 8163 states and 20066 transitions. [2021-06-05 05:51:17,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 05:51:17,391 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.272727272727273) internal successors, (72), 21 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-06-05 05:51:17,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:51:17,397 INFO L225 Difference]: With dead ends: 8163 [2021-06-05 05:51:17,398 INFO L226 Difference]: Without dead ends: 7863 [2021-06-05 05:51:17,398 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 43 SyntacticMatches, 5 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 786.2ms TimeCoverageRelationStatistics Valid=201, Invalid=1439, Unknown=0, NotChecked=0, Total=1640 [2021-06-05 05:51:17,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7863 states. [2021-06-05 05:51:17,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7863 to 4847. [2021-06-05 05:51:17,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4847 states, 4846 states have (on average 2.4599669830788278) internal successors, (11921), 4846 states have internal predecessors, (11921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:51:17,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4847 states to 4847 states and 11921 transitions. [2021-06-05 05:51:17,459 INFO L78 Accepts]: Start accepts. Automaton has 4847 states and 11921 transitions. Word has length 53 [2021-06-05 05:51:17,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:51:17,460 INFO L482 AbstractCegarLoop]: Abstraction has 4847 states and 11921 transitions. [2021-06-05 05:51:17,460 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 3.272727272727273) internal successors, (72), 21 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:51:17,460 INFO L276 IsEmpty]: Start isEmpty. Operand 4847 states and 11921 transitions. [2021-06-05 05:51:17,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-06-05 05:51:17,463 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:51:17,463 INFO L521 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:51:17,684 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2021-06-05 05:51:17,685 INFO L430 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:51:17,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:51:17,685 INFO L82 PathProgramCache]: Analyzing trace with hash -1662317447, now seen corresponding path program 47 times [2021-06-05 05:51:17,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:51:17,685 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137075604] [2021-06-05 05:51:17,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:51:17,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:51:17,940 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 6 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:51:17,941 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:51:17,941 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137075604] [2021-06-05 05:51:17,941 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137075604] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:51:17,941 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040983459] [2021-06-05 05:51:17,941 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 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:51:17,970 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-06-05 05:51:17,970 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:51:17,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 50 conjunts are in the unsatisfiable core [2021-06-05 05:51:17,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:51:18,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:18,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:18,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:18,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:18,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:18,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:18,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:18,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:18,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:18,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:18,337 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:18,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:18,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:18,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:18,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:18,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:18,341 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:18,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:18,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:18,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:18,344 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 15 disjoint index pairs (out of 28 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 43 [2021-06-05 05:51:18,346 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:51:18,352 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:51:18,354 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:51:18,354 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:115, output treesize:7 [2021-06-05 05:51:18,365 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 6 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:51:18,365 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2040983459] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:51:18,365 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:51:18,366 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 23 [2021-06-05 05:51:18,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147705] [2021-06-05 05:51:18,366 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-06-05 05:51:18,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:51:18,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-06-05 05:51:18,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=470, Unknown=0, NotChecked=0, Total=552 [2021-06-05 05:51:18,366 INFO L87 Difference]: Start difference. First operand 4847 states and 11921 transitions. Second operand has 24 states, 24 states have (on average 3.0) internal successors, (72), 23 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:51:19,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:51:19,092 INFO L93 Difference]: Finished difference Result 8775 states and 21889 transitions. [2021-06-05 05:51:19,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-05 05:51:19,093 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.0) internal successors, (72), 23 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-06-05 05:51:19,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:51:19,100 INFO L225 Difference]: With dead ends: 8775 [2021-06-05 05:51:19,101 INFO L226 Difference]: Without dead ends: 8591 [2021-06-05 05:51:19,101 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 41 SyntacticMatches, 5 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 819.8ms TimeCoverageRelationStatistics Valid=213, Invalid=1509, Unknown=0, NotChecked=0, Total=1722 [2021-06-05 05:51:19,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8591 states. [2021-06-05 05:51:19,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8591 to 4927. [2021-06-05 05:51:19,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4927 states, 4926 states have (on average 2.460617133576939) internal successors, (12121), 4926 states have internal predecessors, (12121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:51:19,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4927 states to 4927 states and 12121 transitions. [2021-06-05 05:51:19,158 INFO L78 Accepts]: Start accepts. Automaton has 4927 states and 12121 transitions. Word has length 53 [2021-06-05 05:51:19,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:51:19,158 INFO L482 AbstractCegarLoop]: Abstraction has 4927 states and 12121 transitions. [2021-06-05 05:51:19,158 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 3.0) internal successors, (72), 23 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:51:19,158 INFO L276 IsEmpty]: Start isEmpty. Operand 4927 states and 12121 transitions. [2021-06-05 05:51:19,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-06-05 05:51:19,162 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:51:19,162 INFO L521 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:51:19,362 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,51 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:51:19,362 INFO L430 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:51:19,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:51:19,363 INFO L82 PathProgramCache]: Analyzing trace with hash 1503407737, now seen corresponding path program 48 times [2021-06-05 05:51:19,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:51:19,363 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409359961] [2021-06-05 05:51:19,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:51:19,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:51:19,575 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 6 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:51:19,575 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:51:19,576 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409359961] [2021-06-05 05:51:19,576 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409359961] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:51:19,576 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409008499] [2021-06-05 05:51:19,576 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 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:51:19,607 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-06-05 05:51:19,607 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:51:19,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 51 conjunts are in the unsatisfiable core [2021-06-05 05:51:19,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:51:20,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:20,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:20,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:20,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:20,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:20,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:20,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:20,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:20,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:20,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:20,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:20,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:20,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:20,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:20,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:20,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:20,085 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:20,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:20,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:20,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:20,087 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:20,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:20,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:20,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:20,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:20,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:20,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:20,093 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:20,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:20,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:20,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:20,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:20,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:20,097 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:20,097 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:20,098 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 11 select indices, 11 select index equivalence classes, 15 disjoint index pairs (out of 55 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 103 treesize of output 43 [2021-06-05 05:51:20,099 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:51:20,112 INFO L628 ElimStorePlain]: treesize reduction 5, result has 81.5 percent of original size [2021-06-05 05:51:20,113 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:51:20,113 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:123, output treesize:7 [2021-06-05 05:51:20,123 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 6 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:51:20,123 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1409008499] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:51:20,123 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:51:20,123 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16] total 20 [2021-06-05 05:51:20,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997904501] [2021-06-05 05:51:20,123 INFO L462 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-06-05 05:51:20,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:51:20,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-06-05 05:51:20,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2021-06-05 05:51:20,124 INFO L87 Difference]: Start difference. First operand 4927 states and 12121 transitions. Second operand has 21 states, 21 states have (on average 3.238095238095238) internal successors, (68), 20 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:51:21,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:51:21,610 INFO L93 Difference]: Finished difference Result 8247 states and 20264 transitions. [2021-06-05 05:51:21,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-05 05:51:21,610 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.238095238095238) internal successors, (68), 20 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-06-05 05:51:21,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:51:21,618 INFO L225 Difference]: With dead ends: 8247 [2021-06-05 05:51:21,618 INFO L226 Difference]: Without dead ends: 7975 [2021-06-05 05:51:21,618 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 43 SyntacticMatches, 6 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 994.8ms TimeCoverageRelationStatistics Valid=166, Invalid=1240, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 05:51:21,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7975 states. [2021-06-05 05:51:21,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7975 to 5487. [2021-06-05 05:51:21,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5487 states, 5486 states have (on average 2.461720743711265) internal successors, (13505), 5486 states have internal predecessors, (13505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:51:21,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5487 states to 5487 states and 13505 transitions. [2021-06-05 05:51:21,683 INFO L78 Accepts]: Start accepts. Automaton has 5487 states and 13505 transitions. Word has length 53 [2021-06-05 05:51:21,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:51:21,683 INFO L482 AbstractCegarLoop]: Abstraction has 5487 states and 13505 transitions. [2021-06-05 05:51:21,683 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 3.238095238095238) internal successors, (68), 20 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:51:21,683 INFO L276 IsEmpty]: Start isEmpty. Operand 5487 states and 13505 transitions. [2021-06-05 05:51:21,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-06-05 05:51:21,687 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:51:21,687 INFO L521 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:51:21,888 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2021-06-05 05:51:21,889 INFO L430 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:51:21,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:51:21,889 INFO L82 PathProgramCache]: Analyzing trace with hash -503319943, now seen corresponding path program 49 times [2021-06-05 05:51:21,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:51:21,889 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124345778] [2021-06-05 05:51:21,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:51:21,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:51:22,134 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 6 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:51:22,134 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:51:22,134 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124345778] [2021-06-05 05:51:22,135 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124345778] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:51:22,135 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284096995] [2021-06-05 05:51:22,135 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 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:51:22,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:51:22,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 50 conjunts are in the unsatisfiable core [2021-06-05 05:51:22,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:51:22,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:22,611 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:22,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:22,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:22,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:22,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:22,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:22,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:22,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:22,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:22,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:22,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:22,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:22,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:22,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:22,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:22,625 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 15 disjoint index pairs (out of 21 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 43 [2021-06-05 05:51:22,626 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:51:22,633 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:51:22,634 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:51:22,635 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:115, output treesize:7 [2021-06-05 05:51:22,648 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 6 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:51:22,648 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284096995] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:51:22,648 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:51:22,648 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16] total 21 [2021-06-05 05:51:22,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419402926] [2021-06-05 05:51:22,649 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-05 05:51:22,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:51:22,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-05 05:51:22,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=392, Unknown=0, NotChecked=0, Total=462 [2021-06-05 05:51:22,649 INFO L87 Difference]: Start difference. First operand 5487 states and 13505 transitions. Second operand has 22 states, 22 states have (on average 3.090909090909091) internal successors, (68), 21 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:51:23,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:51:23,286 INFO L93 Difference]: Finished difference Result 10191 states and 25270 transitions. [2021-06-05 05:51:23,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-05 05:51:23,286 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.090909090909091) internal successors, (68), 21 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-06-05 05:51:23,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:51:23,295 INFO L225 Difference]: With dead ends: 10191 [2021-06-05 05:51:23,295 INFO L226 Difference]: Without dead ends: 10103 [2021-06-05 05:51:23,296 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 42 SyntacticMatches, 6 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 860.2ms TimeCoverageRelationStatistics Valid=195, Invalid=1365, Unknown=0, NotChecked=0, Total=1560 [2021-06-05 05:51:23,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10103 states. [2021-06-05 05:51:23,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10103 to 5455. [2021-06-05 05:51:23,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5455 states, 5454 states have (on average 2.4614961496149617) internal successors, (13425), 5454 states have internal predecessors, (13425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:51:23,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5455 states to 5455 states and 13425 transitions. [2021-06-05 05:51:23,369 INFO L78 Accepts]: Start accepts. Automaton has 5455 states and 13425 transitions. Word has length 53 [2021-06-05 05:51:23,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:51:23,369 INFO L482 AbstractCegarLoop]: Abstraction has 5455 states and 13425 transitions. [2021-06-05 05:51:23,369 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 3.090909090909091) internal successors, (68), 21 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:51:23,369 INFO L276 IsEmpty]: Start isEmpty. Operand 5455 states and 13425 transitions. [2021-06-05 05:51:23,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-06-05 05:51:23,372 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:51:23,372 INFO L521 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:51:23,573 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2021-06-05 05:51:23,573 INFO L430 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:51:23,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:51:23,573 INFO L82 PathProgramCache]: Analyzing trace with hash 1256306297, now seen corresponding path program 50 times [2021-06-05 05:51:23,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:51:23,573 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441795573] [2021-06-05 05:51:23,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:51:23,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:51:23,863 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 6 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:51:23,863 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:51:23,863 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441795573] [2021-06-05 05:51:23,863 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441795573] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:51:23,863 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [362175096] [2021-06-05 05:51:23,863 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 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:51:23,892 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 05:51:23,893 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:51:23,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 50 conjunts are in the unsatisfiable core [2021-06-05 05:51:23,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:51:24,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:24,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:24,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:24,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:24,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:24,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:24,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:24,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:24,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:24,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:24,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:24,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:24,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:24,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:24,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:24,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:24,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:24,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:24,261 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:24,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:24,262 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 15 disjoint index pairs (out of 21 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 43 [2021-06-05 05:51:24,265 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:51:24,270 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:51:24,271 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:51:24,271 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:115, output treesize:7 [2021-06-05 05:51:24,280 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 6 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:51:24,280 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [362175096] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:51:24,281 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:51:24,281 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 22 [2021-06-05 05:51:24,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126232985] [2021-06-05 05:51:24,281 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-06-05 05:51:24,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:51:24,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-06-05 05:51:24,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=428, Unknown=0, NotChecked=0, Total=506 [2021-06-05 05:51:24,281 INFO L87 Difference]: Start difference. First operand 5455 states and 13425 transitions. Second operand has 23 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 22 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:51:25,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:51:25,119 INFO L93 Difference]: Finished difference Result 9127 states and 22633 transitions. [2021-06-05 05:51:25,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-05 05:51:25,119 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 22 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-06-05 05:51:25,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:51:25,127 INFO L225 Difference]: With dead ends: 9127 [2021-06-05 05:51:25,127 INFO L226 Difference]: Without dead ends: 9039 [2021-06-05 05:51:25,127 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 41 SyntacticMatches, 6 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 787.4ms TimeCoverageRelationStatistics Valid=210, Invalid=1430, Unknown=0, NotChecked=0, Total=1640 [2021-06-05 05:51:25,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9039 states. [2021-06-05 05:51:25,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9039 to 5455. [2021-06-05 05:51:25,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5455 states, 5454 states have (on average 2.4614961496149617) internal successors, (13425), 5454 states have internal predecessors, (13425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:51:25,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5455 states to 5455 states and 13425 transitions. [2021-06-05 05:51:25,184 INFO L78 Accepts]: Start accepts. Automaton has 5455 states and 13425 transitions. Word has length 53 [2021-06-05 05:51:25,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:51:25,184 INFO L482 AbstractCegarLoop]: Abstraction has 5455 states and 13425 transitions. [2021-06-05 05:51:25,184 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 22 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:51:25,184 INFO L276 IsEmpty]: Start isEmpty. Operand 5455 states and 13425 transitions. [2021-06-05 05:51:25,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-06-05 05:51:25,189 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:51:25,189 INFO L521 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:51:25,403 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2021-06-05 05:51:25,403 INFO L430 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:51:25,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:51:25,404 INFO L82 PathProgramCache]: Analyzing trace with hash -1244538759, now seen corresponding path program 51 times [2021-06-05 05:51:25,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:51:25,404 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597200343] [2021-06-05 05:51:25,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:51:25,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:51:25,691 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 6 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:51:25,691 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:51:25,691 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597200343] [2021-06-05 05:51:25,691 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597200343] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:51:25,692 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969486262] [2021-06-05 05:51:25,692 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 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:51:25,721 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-06-05 05:51:25,721 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:51:25,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 50 conjunts are in the unsatisfiable core [2021-06-05 05:51:25,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:51:25,980 INFO L354 Elim1Store]: treesize reduction 170, result has 0.6 percent of original size [2021-06-05 05:51:25,981 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 109 treesize of output 43 [2021-06-05 05:51:25,982 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:51:25,984 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:51:25,985 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:51:25,985 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:109, output treesize:7 [2021-06-05 05:51:25,997 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 6 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:51:25,997 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1969486262] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:51:25,997 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:51:25,997 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 21 [2021-06-05 05:51:25,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108311589] [2021-06-05 05:51:25,997 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-05 05:51:25,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:51:25,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-05 05:51:25,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2021-06-05 05:51:25,998 INFO L87 Difference]: Start difference. First operand 5455 states and 13425 transitions. Second operand has 22 states, 22 states have (on average 2.909090909090909) internal successors, (64), 21 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:51:26,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:51:26,563 INFO L93 Difference]: Finished difference Result 7667 states and 18917 transitions. [2021-06-05 05:51:26,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-05 05:51:26,564 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.909090909090909) internal successors, (64), 21 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-06-05 05:51:26,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:51:26,571 INFO L225 Difference]: With dead ends: 7667 [2021-06-05 05:51:26,571 INFO L226 Difference]: Without dead ends: 7631 [2021-06-05 05:51:26,571 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 41 SyntacticMatches, 7 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 727.7ms TimeCoverageRelationStatistics Valid=195, Invalid=1287, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 05:51:26,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7631 states. [2021-06-05 05:51:26,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7631 to 5487. [2021-06-05 05:51:26,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5487 states, 5486 states have (on average 2.461720743711265) internal successors, (13505), 5486 states have internal predecessors, (13505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:51:26,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5487 states to 5487 states and 13505 transitions. [2021-06-05 05:51:26,627 INFO L78 Accepts]: Start accepts. Automaton has 5487 states and 13505 transitions. Word has length 53 [2021-06-05 05:51:26,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:51:26,627 INFO L482 AbstractCegarLoop]: Abstraction has 5487 states and 13505 transitions. [2021-06-05 05:51:26,627 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 2.909090909090909) internal successors, (64), 21 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:51:26,627 INFO L276 IsEmpty]: Start isEmpty. Operand 5487 states and 13505 transitions. [2021-06-05 05:51:26,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-06-05 05:51:26,631 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:51:26,631 INFO L521 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:51:26,844 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2021-06-05 05:51:26,845 INFO L430 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:51:26,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:51:26,845 INFO L82 PathProgramCache]: Analyzing trace with hash 75123451, now seen corresponding path program 52 times [2021-06-05 05:51:26,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:51:26,845 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632054815] [2021-06-05 05:51:26,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:51:26,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:51:26,893 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 49 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:51:26,893 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:51:26,893 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632054815] [2021-06-05 05:51:26,893 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632054815] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:51:26,893 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235410375] [2021-06-05 05:51:26,893 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 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:51:26,929 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 05:51:26,930 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:51:26,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-05 05:51:26,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:51:27,008 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 49 proven. 56 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:51:27,008 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1235410375] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:51:27,008 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:51:27,008 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 9 [2021-06-05 05:51:27,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799051889] [2021-06-05 05:51:27,008 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 05:51:27,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:51:27,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 05:51:27,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-06-05 05:51:27,034 INFO L87 Difference]: Start difference. First operand 5487 states and 13505 transitions. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 9 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:51:27,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:51:27,089 INFO L93 Difference]: Finished difference Result 6987 states and 17110 transitions. [2021-06-05 05:51:27,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 05:51:27,089 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 9 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-06-05 05:51:27,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:51:27,097 INFO L225 Difference]: With dead ends: 6987 [2021-06-05 05:51:27,097 INFO L226 Difference]: Without dead ends: 6979 [2021-06-05 05:51:27,098 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 35.2ms TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-06-05 05:51:27,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6979 states. [2021-06-05 05:51:27,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6979 to 5711. [2021-06-05 05:51:27,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5711 states, 5710 states have (on average 2.4660245183887914) internal successors, (14081), 5710 states have internal predecessors, (14081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:51:27,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5711 states to 5711 states and 14081 transitions. [2021-06-05 05:51:27,162 INFO L78 Accepts]: Start accepts. Automaton has 5711 states and 14081 transitions. Word has length 55 [2021-06-05 05:51:27,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:51:27,162 INFO L482 AbstractCegarLoop]: Abstraction has 5711 states and 14081 transitions. [2021-06-05 05:51:27,162 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 9 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:51:27,162 INFO L276 IsEmpty]: Start isEmpty. Operand 5711 states and 14081 transitions. [2021-06-05 05:51:27,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-06-05 05:51:27,166 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:51:27,166 INFO L521 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:51:27,366 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,56 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:51:27,366 INFO L430 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:51:27,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:51:27,366 INFO L82 PathProgramCache]: Analyzing trace with hash 1670278101, now seen corresponding path program 53 times [2021-06-05 05:51:27,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:51:27,366 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428438573] [2021-06-05 05:51:27,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:51:27,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:51:27,583 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 7 proven. 107 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:51:27,584 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:51:27,584 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428438573] [2021-06-05 05:51:27,584 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428438573] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:51:27,584 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932067459] [2021-06-05 05:51:27,584 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 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:51:27,615 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-06-05 05:51:27,616 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:51:27,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 50 conjunts are in the unsatisfiable core [2021-06-05 05:51:27,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:51:27,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:27,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:27,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:27,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:27,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:27,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:27,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:27,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:27,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:27,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:27,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:27,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:27,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:27,973 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:27,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:27,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:27,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:27,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:27,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:27,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:27,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:27,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:27,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:27,979 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:27,980 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 15 disjoint index pairs (out of 28 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 43 [2021-06-05 05:51:27,981 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:51:27,986 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:51:27,987 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:51:27,987 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:115, output treesize:7 [2021-06-05 05:51:27,996 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 7 proven. 107 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:51:27,996 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932067459] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:51:27,996 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:51:27,996 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16] total 22 [2021-06-05 05:51:27,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564581886] [2021-06-05 05:51:27,997 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-06-05 05:51:27,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:51:27,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-06-05 05:51:27,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=433, Unknown=0, NotChecked=0, Total=506 [2021-06-05 05:51:27,997 INFO L87 Difference]: Start difference. First operand 5711 states and 14081 transitions. Second operand has 23 states, 23 states have (on average 3.391304347826087) internal successors, (78), 22 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:51:29,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:51:29,259 INFO L93 Difference]: Finished difference Result 9803 states and 24338 transitions. [2021-06-05 05:51:29,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-05 05:51:29,259 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.391304347826087) internal successors, (78), 22 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-06-05 05:51:29,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:51:29,267 INFO L225 Difference]: With dead ends: 9803 [2021-06-05 05:51:29,267 INFO L226 Difference]: Without dead ends: 9719 [2021-06-05 05:51:29,268 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 46 SyntacticMatches, 5 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 637 ImplicationChecksByTransitivity, 1228.4ms TimeCoverageRelationStatistics Valid=311, Invalid=2239, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 05:51:29,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9719 states. [2021-06-05 05:51:29,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9719 to 5615. [2021-06-05 05:51:29,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5615 states, 5614 states have (on average 2.4654435340220875) internal successors, (13841), 5614 states have internal predecessors, (13841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:51:29,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5615 states to 5615 states and 13841 transitions. [2021-06-05 05:51:29,334 INFO L78 Accepts]: Start accepts. Automaton has 5615 states and 13841 transitions. Word has length 57 [2021-06-05 05:51:29,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:51:29,334 INFO L482 AbstractCegarLoop]: Abstraction has 5615 states and 13841 transitions. [2021-06-05 05:51:29,334 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 3.391304347826087) internal successors, (78), 22 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:51:29,334 INFO L276 IsEmpty]: Start isEmpty. Operand 5615 states and 13841 transitions. [2021-06-05 05:51:29,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-06-05 05:51:29,338 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:51:29,338 INFO L521 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:51:29,538 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2021-06-05 05:51:29,538 INFO L430 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:51:29,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:51:29,539 INFO L82 PathProgramCache]: Analyzing trace with hash 1390569303, now seen corresponding path program 54 times [2021-06-05 05:51:29,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:51:29,539 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005513540] [2021-06-05 05:51:29,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:51:29,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:51:29,833 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 120 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:51:29,834 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:51:29,834 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005513540] [2021-06-05 05:51:29,834 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005513540] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:51:29,834 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1554128714] [2021-06-05 05:51:29,834 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 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:51:29,872 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-06-05 05:51:29,873 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:51:29,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 58 conjunts are in the unsatisfiable core [2021-06-05 05:51:29,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:51:30,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:30,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:30,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:30,428 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:30,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:30,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:30,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:30,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:30,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:30,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:30,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:30,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:30,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:30,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:30,435 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:30,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:30,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:30,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:30,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:30,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:30,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:30,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:30,464 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:30,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:30,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:30,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:30,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:30,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:30,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:30,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:30,469 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:30,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:30,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:30,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:30,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:30,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:30,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:30,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:30,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:30,474 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:30,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:30,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:30,476 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:30,476 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 13 select indices, 13 select index equivalence classes, 21 disjoint index pairs (out of 78 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 48 [2021-06-05 05:51:30,478 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:51:30,483 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:51:30,484 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:51:30,484 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:132, output treesize:7 [2021-06-05 05:51:30,494 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 12 proven. 116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:51:30,494 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1554128714] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:51:30,494 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:51:30,494 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18] total 29 [2021-06-05 05:51:30,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330892238] [2021-06-05 05:51:30,495 INFO L462 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-06-05 05:51:30,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:51:30,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-06-05 05:51:30,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=767, Unknown=0, NotChecked=0, Total=870 [2021-06-05 05:51:30,495 INFO L87 Difference]: Start difference. First operand 5615 states and 13841 transitions. Second operand has 30 states, 30 states have (on average 3.1666666666666665) internal successors, (95), 29 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:51:31,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:51:31,427 INFO L93 Difference]: Finished difference Result 10807 states and 26817 transitions. [2021-06-05 05:51:31,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-05 05:51:31,428 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.1666666666666665) internal successors, (95), 29 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-06-05 05:51:31,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:51:31,438 INFO L225 Difference]: With dead ends: 10807 [2021-06-05 05:51:31,438 INFO L226 Difference]: Without dead ends: 10767 [2021-06-05 05:51:31,438 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 769 ImplicationChecksByTransitivity, 1094.9ms TimeCoverageRelationStatistics Valid=274, Invalid=2482, Unknown=0, NotChecked=0, Total=2756 [2021-06-05 05:51:31,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10767 states. [2021-06-05 05:51:31,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10767 to 5679. [2021-06-05 05:51:31,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5679 states, 5678 states have (on average 2.4658330398027473) internal successors, (14001), 5678 states have internal predecessors, (14001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:51:31,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5679 states to 5679 states and 14001 transitions. [2021-06-05 05:51:31,512 INFO L78 Accepts]: Start accepts. Automaton has 5679 states and 14001 transitions. Word has length 59 [2021-06-05 05:51:31,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:51:31,512 INFO L482 AbstractCegarLoop]: Abstraction has 5679 states and 14001 transitions. [2021-06-05 05:51:31,512 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 3.1666666666666665) internal successors, (95), 29 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:51:31,512 INFO L276 IsEmpty]: Start isEmpty. Operand 5679 states and 14001 transitions. [2021-06-05 05:51:31,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-06-05 05:51:31,516 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:51:31,516 INFO L521 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:51:31,716 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:51:31,717 INFO L430 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:51:31,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:51:31,717 INFO L82 PathProgramCache]: Analyzing trace with hash -1034811049, now seen corresponding path program 55 times [2021-06-05 05:51:31,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:51:31,717 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151068357] [2021-06-05 05:51:31,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:51:31,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:51:32,001 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 120 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:51:32,001 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:51:32,001 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151068357] [2021-06-05 05:51:32,001 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151068357] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:51:32,001 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [104465213] [2021-06-05 05:51:32,001 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 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:51:32,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:51:32,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 58 conjunts are in the unsatisfiable core [2021-06-05 05:51:32,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:51:32,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:32,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:32,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:32,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:32,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:32,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:32,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:32,590 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:32,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:32,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:32,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:32,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:32,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:32,594 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:32,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:32,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:32,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:32,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:32,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:32,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:32,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:32,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:32,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:32,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:32,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:32,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:32,602 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:32,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:32,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:32,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:32,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:32,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:32,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:32,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:32,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:32,607 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:32,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:32,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:32,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:32,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:32,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:32,611 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:32,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:32,612 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:32,613 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 13 select indices, 13 select index equivalence classes, 21 disjoint index pairs (out of 78 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 48 [2021-06-05 05:51:32,614 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:51:32,619 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:51:32,620 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:51:32,620 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:132, output treesize:7 [2021-06-05 05:51:32,630 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 12 proven. 116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:51:32,630 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [104465213] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:51:32,630 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:51:32,630 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18] total 29 [2021-06-05 05:51:32,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068977003] [2021-06-05 05:51:32,630 INFO L462 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-06-05 05:51:32,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:51:32,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-06-05 05:51:32,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=767, Unknown=0, NotChecked=0, Total=870 [2021-06-05 05:51:32,631 INFO L87 Difference]: Start difference. First operand 5679 states and 14001 transitions. Second operand has 30 states, 30 states have (on average 3.1666666666666665) internal successors, (95), 29 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:51:33,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:51:33,733 INFO L93 Difference]: Finished difference Result 11111 states and 27625 transitions. [2021-06-05 05:51:33,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-05 05:51:33,734 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.1666666666666665) internal successors, (95), 29 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-06-05 05:51:33,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:51:33,744 INFO L225 Difference]: With dead ends: 11111 [2021-06-05 05:51:33,744 INFO L226 Difference]: Without dead ends: 11023 [2021-06-05 05:51:33,745 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 759 ImplicationChecksByTransitivity, 1079.5ms TimeCoverageRelationStatistics Valid=274, Invalid=2482, Unknown=0, NotChecked=0, Total=2756 [2021-06-05 05:51:33,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11023 states. [2021-06-05 05:51:33,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11023 to 5775. [2021-06-05 05:51:33,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5775 states, 5774 states have (on average 2.463630065812262) internal successors, (14225), 5774 states have internal predecessors, (14225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:51:33,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5775 states to 5775 states and 14225 transitions. [2021-06-05 05:51:33,819 INFO L78 Accepts]: Start accepts. Automaton has 5775 states and 14225 transitions. Word has length 59 [2021-06-05 05:51:33,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:51:33,819 INFO L482 AbstractCegarLoop]: Abstraction has 5775 states and 14225 transitions. [2021-06-05 05:51:33,819 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 3.1666666666666665) internal successors, (95), 29 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:51:33,819 INFO L276 IsEmpty]: Start isEmpty. Operand 5775 states and 14225 transitions. [2021-06-05 05:51:33,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-06-05 05:51:33,823 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:51:33,823 INFO L521 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:51:34,023 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2021-06-05 05:51:34,024 INFO L430 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:51:34,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:51:34,024 INFO L82 PathProgramCache]: Analyzing trace with hash 823145303, now seen corresponding path program 56 times [2021-06-05 05:51:34,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:51:34,024 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327138904] [2021-06-05 05:51:34,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:51:34,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:51:34,287 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 120 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:51:34,288 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:51:34,288 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327138904] [2021-06-05 05:51:34,288 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327138904] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:51:34,288 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745197549] [2021-06-05 05:51:34,288 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 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:51:34,319 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 05:51:34,319 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:51:34,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 58 conjunts are in the unsatisfiable core [2021-06-05 05:51:34,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:51:34,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:34,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:34,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:34,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:34,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:34,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:34,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:34,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:34,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:34,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:34,857 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:34,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:34,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:34,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:34,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:34,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:34,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:34,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:34,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:34,863 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:34,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:34,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:34,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:34,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:34,866 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:34,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:34,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:34,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:34,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:34,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:34,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:34,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:34,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:34,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:34,872 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:34,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:34,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:34,874 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:34,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:34,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:34,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:34,876 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:34,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 13 select indices, 13 select index equivalence classes, 21 disjoint index pairs (out of 78 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 48 [2021-06-05 05:51:34,880 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:51:34,885 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:51:34,886 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:51:34,886 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:132, output treesize:7 [2021-06-05 05:51:34,896 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 12 proven. 116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:51:34,896 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1745197549] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:51:34,896 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:51:34,896 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18] total 29 [2021-06-05 05:51:34,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814414624] [2021-06-05 05:51:34,896 INFO L462 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-06-05 05:51:34,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:51:34,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-06-05 05:51:34,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=767, Unknown=0, NotChecked=0, Total=870 [2021-06-05 05:51:34,897 INFO L87 Difference]: Start difference. First operand 5775 states and 14225 transitions. Second operand has 30 states, 30 states have (on average 3.1666666666666665) internal successors, (95), 29 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:51:35,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:51:35,954 INFO L93 Difference]: Finished difference Result 9879 states and 24481 transitions. [2021-06-05 05:51:35,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-05 05:51:35,955 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.1666666666666665) internal successors, (95), 29 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-06-05 05:51:35,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:51:35,964 INFO L225 Difference]: With dead ends: 9879 [2021-06-05 05:51:35,964 INFO L226 Difference]: Without dead ends: 9839 [2021-06-05 05:51:35,964 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 758 ImplicationChecksByTransitivity, 1040.8ms TimeCoverageRelationStatistics Valid=274, Invalid=2482, Unknown=0, NotChecked=0, Total=2756 [2021-06-05 05:51:35,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9839 states. [2021-06-05 05:51:36,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9839 to 5807. [2021-06-05 05:51:36,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5807 states, 5806 states have (on average 2.4638305201515673) internal successors, (14305), 5806 states have internal predecessors, (14305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:51:36,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5807 states to 5807 states and 14305 transitions. [2021-06-05 05:51:36,056 INFO L78 Accepts]: Start accepts. Automaton has 5807 states and 14305 transitions. Word has length 59 [2021-06-05 05:51:36,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:51:36,056 INFO L482 AbstractCegarLoop]: Abstraction has 5807 states and 14305 transitions. [2021-06-05 05:51:36,056 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 3.1666666666666665) internal successors, (95), 29 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:51:36,056 INFO L276 IsEmpty]: Start isEmpty. Operand 5807 states and 14305 transitions. [2021-06-05 05:51:36,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-06-05 05:51:36,060 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:51:36,060 INFO L521 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:51:36,260 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,60 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:51:36,261 INFO L430 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:51:36,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:51:36,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1909470551, now seen corresponding path program 57 times [2021-06-05 05:51:36,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:51:36,261 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261491095] [2021-06-05 05:51:36,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:51:36,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:51:36,491 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:51:36,492 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:51:36,492 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261491095] [2021-06-05 05:51:36,492 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261491095] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:51:36,492 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669304846] [2021-06-05 05:51:36,492 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 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:51:36,528 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-06-05 05:51:36,528 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:51:36,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 58 conjunts are in the unsatisfiable core [2021-06-05 05:51:36,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:51:37,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:37,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:37,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:37,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:37,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:37,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:37,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:37,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:37,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:37,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:37,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:37,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:37,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:37,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:37,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:37,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:37,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:37,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:37,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:37,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:37,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:37,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:37,072 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:37,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:37,073 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:37,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:37,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:37,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:37,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:37,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:37,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:37,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:37,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:37,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:37,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:37,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:37,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:37,084 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:37,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:37,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:37,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:37,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:37,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:37,089 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:37,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:37,090 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:37,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:37,092 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:37,092 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 13 select indices, 13 select index equivalence classes, 21 disjoint index pairs (out of 78 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 48 [2021-06-05 05:51:37,094 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:51:37,100 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:51:37,101 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:51:37,102 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:132, output treesize:7 [2021-06-05 05:51:37,114 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 11 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:51:37,114 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1669304846] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:51:37,114 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:51:37,114 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 18] total 27 [2021-06-05 05:51:37,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535008340] [2021-06-05 05:51:37,115 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-06-05 05:51:37,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:51:37,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-06-05 05:51:37,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=655, Unknown=0, NotChecked=0, Total=756 [2021-06-05 05:51:37,115 INFO L87 Difference]: Start difference. First operand 5807 states and 14305 transitions. Second operand has 28 states, 28 states have (on average 3.4285714285714284) internal successors, (96), 27 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:51:38,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:51:38,872 INFO L93 Difference]: Finished difference Result 9031 states and 22247 transitions. [2021-06-05 05:51:38,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 05:51:38,873 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.4285714285714284) internal successors, (96), 27 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-06-05 05:51:38,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:51:38,880 INFO L225 Difference]: With dead ends: 9031 [2021-06-05 05:51:38,880 INFO L226 Difference]: Without dead ends: 8623 [2021-06-05 05:51:38,880 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 730 ImplicationChecksByTransitivity, 1239.9ms TimeCoverageRelationStatistics Valid=301, Invalid=2351, Unknown=0, NotChecked=0, Total=2652 [2021-06-05 05:51:38,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8623 states. [2021-06-05 05:51:38,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8623 to 6095. [2021-06-05 05:51:38,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6095 states, 6094 states have (on average 2.4616015753199867) internal successors, (15001), 6094 states have internal predecessors, (15001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:51:38,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6095 states to 6095 states and 15001 transitions. [2021-06-05 05:51:38,947 INFO L78 Accepts]: Start accepts. Automaton has 6095 states and 15001 transitions. Word has length 59 [2021-06-05 05:51:38,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:51:38,947 INFO L482 AbstractCegarLoop]: Abstraction has 6095 states and 15001 transitions. [2021-06-05 05:51:38,947 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 3.4285714285714284) internal successors, (96), 27 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:51:38,947 INFO L276 IsEmpty]: Start isEmpty. Operand 6095 states and 15001 transitions. [2021-06-05 05:51:38,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-06-05 05:51:38,951 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:51:38,951 INFO L521 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:51:39,152 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2021-06-05 05:51:39,152 INFO L430 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:51:39,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:51:39,152 INFO L82 PathProgramCache]: Analyzing trace with hash 832156503, now seen corresponding path program 58 times [2021-06-05 05:51:39,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:51:39,152 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530746368] [2021-06-05 05:51:39,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:51:39,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:51:39,401 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:51:39,402 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:51:39,402 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530746368] [2021-06-05 05:51:39,402 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530746368] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:51:39,402 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079576912] [2021-06-05 05:51:39,402 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 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:51:39,435 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 05:51:39,435 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:51:39,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 58 conjunts are in the unsatisfiable core [2021-06-05 05:51:39,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:51:39,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:39,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:39,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:39,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:39,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:39,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:39,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:39,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:39,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:39,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:39,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:39,985 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:39,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:39,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:39,986 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:39,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:39,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:39,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:39,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:39,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:39,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:39,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:39,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:39,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:39,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:39,993 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:39,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:39,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:39,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:39,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:39,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:39,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:39,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:39,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:39,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:39,999 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:40,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:40,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:40,001 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:40,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:40,002 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:40,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:40,003 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 13 select indices, 13 select index equivalence classes, 21 disjoint index pairs (out of 78 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 48 [2021-06-05 05:51:40,004 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:51:40,009 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:51:40,010 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:51:40,010 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:132, output treesize:7 [2021-06-05 05:51:40,027 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:51:40,028 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1079576912] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:51:40,028 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:51:40,028 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18] total 29 [2021-06-05 05:51:40,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947298692] [2021-06-05 05:51:40,028 INFO L462 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-06-05 05:51:40,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:51:40,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-06-05 05:51:40,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=767, Unknown=0, NotChecked=0, Total=870 [2021-06-05 05:51:40,029 INFO L87 Difference]: Start difference. First operand 6095 states and 15001 transitions. Second operand has 30 states, 30 states have (on average 3.2) internal successors, (96), 29 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:51:41,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:51:41,128 INFO L93 Difference]: Finished difference Result 12839 states and 32095 transitions. [2021-06-05 05:51:41,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-05 05:51:41,128 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.2) internal successors, (96), 29 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-06-05 05:51:41,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:51:41,141 INFO L225 Difference]: With dead ends: 12839 [2021-06-05 05:51:41,141 INFO L226 Difference]: Without dead ends: 12655 [2021-06-05 05:51:41,141 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 712 ImplicationChecksByTransitivity, 1070.6ms TimeCoverageRelationStatistics Valid=274, Invalid=2482, Unknown=0, NotChecked=0, Total=2756 [2021-06-05 05:51:41,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12655 states. [2021-06-05 05:51:41,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12655 to 5359. [2021-06-05 05:51:41,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5359 states, 5358 states have (on average 2.4667786487495333) internal successors, (13217), 5358 states have internal predecessors, (13217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:51:41,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5359 states to 5359 states and 13217 transitions. [2021-06-05 05:51:41,222 INFO L78 Accepts]: Start accepts. Automaton has 5359 states and 13217 transitions. Word has length 59 [2021-06-05 05:51:41,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:51:41,222 INFO L482 AbstractCegarLoop]: Abstraction has 5359 states and 13217 transitions. [2021-06-05 05:51:41,222 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 3.2) internal successors, (96), 29 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:51:41,222 INFO L276 IsEmpty]: Start isEmpty. Operand 5359 states and 13217 transitions. [2021-06-05 05:51:41,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-06-05 05:51:41,226 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:51:41,226 INFO L521 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:51:41,426 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,62 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:51:41,426 INFO L430 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:51:41,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:51:41,427 INFO L82 PathProgramCache]: Analyzing trace with hash -1604854441, now seen corresponding path program 59 times [2021-06-05 05:51:41,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:51:41,427 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409825517] [2021-06-05 05:51:41,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:51:41,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:51:41,682 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:51:41,682 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:51:41,683 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409825517] [2021-06-05 05:51:41,683 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409825517] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:51:41,683 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535112642] [2021-06-05 05:51:41,683 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 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:51:41,719 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-06-05 05:51:41,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:51:41,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 59 conjunts are in the unsatisfiable core [2021-06-05 05:51:41,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:51:42,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:42,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:42,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:42,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:42,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:42,350 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:42,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:42,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:42,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:42,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:42,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:42,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:42,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:42,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:42,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:42,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:42,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:42,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:42,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:42,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:42,359 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:42,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:42,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:42,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:42,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:42,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:42,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:42,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:42,364 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:42,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:42,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:42,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:42,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:42,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:42,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:42,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:42,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:42,370 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:42,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:42,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:42,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:42,373 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:42,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:42,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:42,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:42,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:42,376 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:42,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:42,377 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:42,377 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 14 select indices, 14 select index equivalence classes, 21 disjoint index pairs (out of 91 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 38 [2021-06-05 05:51:42,378 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:51:42,382 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:51:42,383 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:51:42,383 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:98, output treesize:3 [2021-06-05 05:51:42,404 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:51:42,404 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [535112642] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:51:42,404 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:51:42,405 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18] total 32 [2021-06-05 05:51:42,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624634964] [2021-06-05 05:51:42,405 INFO L462 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-06-05 05:51:42,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:51:42,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-06-05 05:51:42,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=969, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 05:51:42,406 INFO L87 Difference]: Start difference. First operand 5359 states and 13217 transitions. Second operand has 33 states, 33 states have (on average 3.272727272727273) internal successors, (108), 32 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:51:44,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:51:44,998 INFO L93 Difference]: Finished difference Result 12591 states and 31245 transitions. [2021-06-05 05:51:44,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-05 05:51:44,998 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.272727272727273) internal successors, (108), 32 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-06-05 05:51:44,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:51:45,011 INFO L225 Difference]: With dead ends: 12591 [2021-06-05 05:51:45,011 INFO L226 Difference]: Without dead ends: 12143 [2021-06-05 05:51:45,011 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 564 ImplicationChecksByTransitivity, 1723.4ms TimeCoverageRelationStatistics Valid=292, Invalid=3014, Unknown=0, NotChecked=0, Total=3306 [2021-06-05 05:51:45,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12143 states. [2021-06-05 05:51:45,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12143 to 6559. [2021-06-05 05:51:45,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6559 states, 6558 states have (on average 2.466758157974992) internal successors, (16177), 6558 states have internal predecessors, (16177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:51:45,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6559 states to 6559 states and 16177 transitions. [2021-06-05 05:51:45,098 INFO L78 Accepts]: Start accepts. Automaton has 6559 states and 16177 transitions. Word has length 59 [2021-06-05 05:51:45,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:51:45,098 INFO L482 AbstractCegarLoop]: Abstraction has 6559 states and 16177 transitions. [2021-06-05 05:51:45,098 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 3.272727272727273) internal successors, (108), 32 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:51:45,098 INFO L276 IsEmpty]: Start isEmpty. Operand 6559 states and 16177 transitions. [2021-06-05 05:51:45,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-06-05 05:51:45,104 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:51:45,104 INFO L521 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:51:45,326 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2021-06-05 05:51:45,327 INFO L430 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:51:45,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:51:45,327 INFO L82 PathProgramCache]: Analyzing trace with hash -1977286825, now seen corresponding path program 60 times [2021-06-05 05:51:45,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:51:45,327 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088822457] [2021-06-05 05:51:45,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:51:45,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:51:45,698 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:51:45,699 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:51:45,699 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088822457] [2021-06-05 05:51:45,699 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088822457] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:51:45,699 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2024951376] [2021-06-05 05:51:45,699 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 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:51:45,744 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-06-05 05:51:45,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:51:45,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 59 conjunts are in the unsatisfiable core [2021-06-05 05:51:45,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:51:46,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:46,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:46,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:46,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:46,628 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:46,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:46,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:46,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:46,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:46,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:46,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:46,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:46,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:46,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:46,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:46,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:46,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:46,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:46,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:46,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:46,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:46,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:46,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:46,640 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:46,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:46,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:46,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:46,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:46,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:46,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:46,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:46,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:46,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:46,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:46,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:46,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:46,649 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:46,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:46,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:46,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:46,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:46,652 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:46,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:46,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:46,653 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:46,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:46,655 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:46,655 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 13 select indices, 13 select index equivalence classes, 21 disjoint index pairs (out of 78 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 48 [2021-06-05 05:51:46,656 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:51:46,669 INFO L628 ElimStorePlain]: treesize reduction 5, result has 81.5 percent of original size [2021-06-05 05:51:46,670 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:51:46,670 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:142, output treesize:7 [2021-06-05 05:51:46,680 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:51:46,681 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2024951376] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:51:46,681 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:51:46,681 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 30 [2021-06-05 05:51:46,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303936232] [2021-06-05 05:51:46,681 INFO L462 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-06-05 05:51:46,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:51:46,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-06-05 05:51:46,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=827, Unknown=0, NotChecked=0, Total=930 [2021-06-05 05:51:46,682 INFO L87 Difference]: Start difference. First operand 6559 states and 16177 transitions. Second operand has 31 states, 31 states have (on average 3.096774193548387) internal successors, (96), 30 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:51:49,232 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2021-06-05 05:51:50,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:51:50,371 INFO L93 Difference]: Finished difference Result 12419 states and 30851 transitions. [2021-06-05 05:51:50,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 05:51:50,372 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.096774193548387) internal successors, (96), 30 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-06-05 05:51:50,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:51:50,380 INFO L225 Difference]: With dead ends: 12419 [2021-06-05 05:51:50,380 INFO L226 Difference]: Without dead ends: 11983 [2021-06-05 05:51:50,380 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 699 ImplicationChecksByTransitivity, 2000.3ms TimeCoverageRelationStatistics Valid=286, Invalid=2684, Unknown=0, NotChecked=0, Total=2970 [2021-06-05 05:51:50,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11983 states. [2021-06-05 05:51:50,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11983 to 6495. [2021-06-05 05:51:50,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6495 states, 6494 states have (on average 2.4701262704034495) internal successors, (16041), 6494 states have internal predecessors, (16041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:51:50,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6495 states to 6495 states and 16041 transitions. [2021-06-05 05:51:50,461 INFO L78 Accepts]: Start accepts. Automaton has 6495 states and 16041 transitions. Word has length 59 [2021-06-05 05:51:50,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:51:50,461 INFO L482 AbstractCegarLoop]: Abstraction has 6495 states and 16041 transitions. [2021-06-05 05:51:50,461 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 3.096774193548387) internal successors, (96), 30 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:51:50,461 INFO L276 IsEmpty]: Start isEmpty. Operand 6495 states and 16041 transitions. [2021-06-05 05:51:50,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-06-05 05:51:50,465 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:51:50,465 INFO L521 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:51:50,665 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,64 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:51:50,665 INFO L430 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:51:50,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:51:50,666 INFO L82 PathProgramCache]: Analyzing trace with hash -1613808297, now seen corresponding path program 61 times [2021-06-05 05:51:50,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:51:50,666 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389584832] [2021-06-05 05:51:50,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:51:50,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:51:50,978 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:51:50,978 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:51:50,978 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389584832] [2021-06-05 05:51:50,978 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389584832] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:51:50,978 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2083734802] [2021-06-05 05:51:50,978 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:51:51,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:51:51,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 58 conjunts are in the unsatisfiable core [2021-06-05 05:51:51,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:51:51,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:51,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:51,629 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:51,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:51,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:51,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:51,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:51,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:51,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:51,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:51,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:51,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:51,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:51,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:51,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:51,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:51,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:51,638 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:51,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:51,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:51,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:51,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:51,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:51,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:51,642 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:51,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:51,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:51,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:51,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:51,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:51,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:51,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:51,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:51,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:51,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:51,649 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:51,650 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:51,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:51,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:51,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:51,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:51,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:51,653 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:51,654 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 13 select indices, 13 select index equivalence classes, 21 disjoint index pairs (out of 78 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 48 [2021-06-05 05:51:51,655 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:51:51,660 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:51:51,661 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:51:51,661 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:132, output treesize:7 [2021-06-05 05:51:51,671 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 11 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:51:51,671 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2083734802] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:51:51,671 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:51:51,672 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 30 [2021-06-05 05:51:51,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798806307] [2021-06-05 05:51:51,672 INFO L462 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-06-05 05:51:51,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:51:51,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-06-05 05:51:51,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=810, Unknown=0, NotChecked=0, Total=930 [2021-06-05 05:51:51,672 INFO L87 Difference]: Start difference. First operand 6495 states and 16041 transitions. Second operand has 31 states, 31 states have (on average 3.096774193548387) internal successors, (96), 30 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:51:52,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:51:52,747 INFO L93 Difference]: Finished difference Result 10055 states and 24851 transitions. [2021-06-05 05:51:52,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 05:51:52,748 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.096774193548387) internal successors, (96), 30 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-06-05 05:51:52,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:51:52,756 INFO L225 Difference]: With dead ends: 10055 [2021-06-05 05:51:52,756 INFO L226 Difference]: Without dead ends: 9695 [2021-06-05 05:51:52,757 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 712 ImplicationChecksByTransitivity, 1394.0ms TimeCoverageRelationStatistics Valid=302, Invalid=2350, Unknown=0, NotChecked=0, Total=2652 [2021-06-05 05:51:52,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9695 states. [2021-06-05 05:51:52,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9695 to 7343. [2021-06-05 05:51:52,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7343 states, 7342 states have (on average 2.4648597112503405) internal successors, (18097), 7342 states have internal predecessors, (18097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:51:52,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7343 states to 7343 states and 18097 transitions. [2021-06-05 05:51:52,840 INFO L78 Accepts]: Start accepts. Automaton has 7343 states and 18097 transitions. Word has length 59 [2021-06-05 05:51:52,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:51:52,841 INFO L482 AbstractCegarLoop]: Abstraction has 7343 states and 18097 transitions. [2021-06-05 05:51:52,841 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 3.096774193548387) internal successors, (96), 30 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:51:52,841 INFO L276 IsEmpty]: Start isEmpty. Operand 7343 states and 18097 transitions. [2021-06-05 05:51:52,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-06-05 05:51:52,847 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:51:52,847 INFO L521 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:51:53,047 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2021-06-05 05:51:53,047 INFO L430 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:51:53,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:51:53,048 INFO L82 PathProgramCache]: Analyzing trace with hash 1172638039, now seen corresponding path program 62 times [2021-06-05 05:51:53,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:51:53,048 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873313863] [2021-06-05 05:51:53,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:51:53,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:51:53,257 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 114 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-06-05 05:51:53,257 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:51:53,257 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873313863] [2021-06-05 05:51:53,257 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873313863] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:51:53,257 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343147574] [2021-06-05 05:51:53,257 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:51:53,285 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 05:51:53,286 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:51:53,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 58 conjunts are in the unsatisfiable core [2021-06-05 05:51:53,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:51:53,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:53,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:53,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:53,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:53,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:53,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:53,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:53,827 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:53,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:53,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:53,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:53,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:53,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:53,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:53,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:53,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:53,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:53,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:53,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:53,835 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:53,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:53,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:53,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:53,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:53,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:53,839 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:53,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:53,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:53,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:53,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:53,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:53,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:53,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:53,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:53,844 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:53,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:53,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:53,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:53,846 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:53,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:53,848 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:53,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:53,849 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 13 select indices, 13 select index equivalence classes, 21 disjoint index pairs (out of 78 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 48 [2021-06-05 05:51:53,850 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:51:53,855 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:51:53,856 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:51:53,856 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:132, output treesize:7 [2021-06-05 05:51:53,866 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 14 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:51:53,866 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [343147574] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:51:53,866 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:51:53,866 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 18] total 27 [2021-06-05 05:51:53,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697586858] [2021-06-05 05:51:53,866 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-06-05 05:51:53,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:51:53,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-06-05 05:51:53,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=658, Unknown=0, NotChecked=0, Total=756 [2021-06-05 05:51:53,867 INFO L87 Difference]: Start difference. First operand 7343 states and 18097 transitions. Second operand has 28 states, 28 states have (on average 3.2142857142857144) internal successors, (90), 27 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:51:55,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:51:55,442 INFO L93 Difference]: Finished difference Result 11835 states and 29279 transitions. [2021-06-05 05:51:55,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-05 05:51:55,443 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.2142857142857144) internal successors, (90), 27 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-06-05 05:51:55,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:51:55,452 INFO L225 Difference]: With dead ends: 11835 [2021-06-05 05:51:55,452 INFO L226 Difference]: Without dead ends: 11391 [2021-06-05 05:51:55,452 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 746 ImplicationChecksByTransitivity, 1297.9ms TimeCoverageRelationStatistics Valid=309, Invalid=2447, Unknown=0, NotChecked=0, Total=2756 [2021-06-05 05:51:55,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11391 states. [2021-06-05 05:51:55,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11391 to 6767. [2021-06-05 05:51:55,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6767 states, 6766 states have (on average 2.4665976943541237) internal successors, (16689), 6766 states have internal predecessors, (16689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:51:55,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6767 states to 6767 states and 16689 transitions. [2021-06-05 05:51:55,531 INFO L78 Accepts]: Start accepts. Automaton has 6767 states and 16689 transitions. Word has length 59 [2021-06-05 05:51:55,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:51:55,531 INFO L482 AbstractCegarLoop]: Abstraction has 6767 states and 16689 transitions. [2021-06-05 05:51:55,531 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 3.2142857142857144) internal successors, (90), 27 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:51:55,531 INFO L276 IsEmpty]: Start isEmpty. Operand 6767 states and 16689 transitions. [2021-06-05 05:51:55,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-06-05 05:51:55,535 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:51:55,536 INFO L521 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:51:55,736 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2021-06-05 05:51:55,736 INFO L430 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:51:55,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:51:55,736 INFO L82 PathProgramCache]: Analyzing trace with hash 2049900887, now seen corresponding path program 63 times [2021-06-05 05:51:55,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:51:55,736 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978016102] [2021-06-05 05:51:55,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:51:55,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:51:56,052 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:51:56,052 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:51:56,052 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978016102] [2021-06-05 05:51:56,053 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978016102] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:51:56,053 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1648828672] [2021-06-05 05:51:56,053 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:51:56,093 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-06-05 05:51:56,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:51:56,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 58 conjunts are in the unsatisfiable core [2021-06-05 05:51:56,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:51:56,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:56,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:56,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:56,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:56,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:56,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:56,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:56,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:56,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:56,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:56,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:56,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:56,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:56,644 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:56,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:56,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:56,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:56,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:56,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:56,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:56,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:56,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:56,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:56,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:56,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:56,652 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:56,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:56,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:56,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:56,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:56,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:56,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:56,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:56,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:56,658 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:56,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:56,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:56,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:56,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:56,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:56,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:56,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:56,662 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:56,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:56,663 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:56,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:56,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:56,665 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:56,666 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 13 select indices, 13 select index equivalence classes, 21 disjoint index pairs (out of 78 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 48 [2021-06-05 05:51:56,667 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:51:56,672 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:51:56,673 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:51:56,673 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:132, output treesize:7 [2021-06-05 05:51:56,683 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 11 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:51:56,683 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1648828672] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:51:56,683 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:51:56,683 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18] total 28 [2021-06-05 05:51:56,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689050563] [2021-06-05 05:51:56,683 INFO L462 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-06-05 05:51:56,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:51:56,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-06-05 05:51:56,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=710, Unknown=0, NotChecked=0, Total=812 [2021-06-05 05:51:56,684 INFO L87 Difference]: Start difference. First operand 6767 states and 16689 transitions. Second operand has 29 states, 29 states have (on average 3.310344827586207) internal successors, (96), 28 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:51:58,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:51:58,221 INFO L93 Difference]: Finished difference Result 10007 states and 24673 transitions. [2021-06-05 05:51:58,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-05 05:51:58,221 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.310344827586207) internal successors, (96), 28 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-06-05 05:51:58,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:51:58,230 INFO L225 Difference]: With dead ends: 10007 [2021-06-05 05:51:58,231 INFO L226 Difference]: Without dead ends: 9615 [2021-06-05 05:51:58,231 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 47 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 705 ImplicationChecksByTransitivity, 1316.8ms TimeCoverageRelationStatistics Valid=287, Invalid=2365, Unknown=0, NotChecked=0, Total=2652 [2021-06-05 05:51:58,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9615 states. [2021-06-05 05:51:58,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9615 to 7087. [2021-06-05 05:51:58,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7087 states, 7086 states have (on average 2.463590177815411) internal successors, (17457), 7086 states have internal predecessors, (17457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:51:58,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7087 states to 7087 states and 17457 transitions. [2021-06-05 05:51:58,311 INFO L78 Accepts]: Start accepts. Automaton has 7087 states and 17457 transitions. Word has length 59 [2021-06-05 05:51:58,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:51:58,312 INFO L482 AbstractCegarLoop]: Abstraction has 7087 states and 17457 transitions. [2021-06-05 05:51:58,312 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 3.310344827586207) internal successors, (96), 28 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:51:58,312 INFO L276 IsEmpty]: Start isEmpty. Operand 7087 states and 17457 transitions. [2021-06-05 05:51:58,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-06-05 05:51:58,317 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:51:58,317 INFO L521 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:51:58,517 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2021-06-05 05:51:58,517 INFO L430 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:51:58,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:51:58,517 INFO L82 PathProgramCache]: Analyzing trace with hash -1464424105, now seen corresponding path program 64 times [2021-06-05 05:51:58,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:51:58,518 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108749167] [2021-06-05 05:51:58,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:51:58,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:51:58,795 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:51:58,795 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:51:58,795 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108749167] [2021-06-05 05:51:58,795 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108749167] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:51:58,795 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [99537546] [2021-06-05 05:51:58,795 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:51:58,823 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 05:51:58,823 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:51:58,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 58 conjunts are in the unsatisfiable core [2021-06-05 05:51:58,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:51:59,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:59,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:59,385 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:59,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:59,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:59,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:59,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:59,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:59,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:59,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:59,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:59,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:59,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:59,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:59,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:59,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:59,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:59,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:59,395 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:59,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:59,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:59,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:59,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:59,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:59,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:59,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:59,400 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:59,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:59,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:59,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:59,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:59,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:59,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:59,405 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:59,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:59,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:59,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:59,407 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:59,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:59,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:59,409 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:51:59,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:51:59,410 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 13 select indices, 13 select index equivalence classes, 21 disjoint index pairs (out of 78 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 48 [2021-06-05 05:51:59,411 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:51:59,416 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:51:59,417 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:51:59,417 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:132, output treesize:7 [2021-06-05 05:51:59,427 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:51:59,427 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [99537546] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:51:59,427 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:51:59,427 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 30 [2021-06-05 05:51:59,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904749142] [2021-06-05 05:51:59,428 INFO L462 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-06-05 05:51:59,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:51:59,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-06-05 05:51:59,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=818, Unknown=0, NotChecked=0, Total=930 [2021-06-05 05:51:59,428 INFO L87 Difference]: Start difference. First operand 7087 states and 17457 transitions. Second operand has 31 states, 31 states have (on average 3.096774193548387) internal successors, (96), 30 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:52:00,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:52:00,440 INFO L93 Difference]: Finished difference Result 11831 states and 29545 transitions. [2021-06-05 05:52:00,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-05 05:52:00,440 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.096774193548387) internal successors, (96), 30 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-06-05 05:52:00,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:52:00,451 INFO L225 Difference]: With dead ends: 11831 [2021-06-05 05:52:00,452 INFO L226 Difference]: Without dead ends: 11647 [2021-06-05 05:52:00,452 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 592 ImplicationChecksByTransitivity, 1056.9ms TimeCoverageRelationStatistics Valid=254, Invalid=2196, Unknown=0, NotChecked=0, Total=2450 [2021-06-05 05:52:00,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11647 states. [2021-06-05 05:52:00,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11647 to 7119. [2021-06-05 05:52:00,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7119 states, 7118 states have (on average 2.4637538634447878) internal successors, (17537), 7118 states have internal predecessors, (17537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:52:00,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7119 states to 7119 states and 17537 transitions. [2021-06-05 05:52:00,542 INFO L78 Accepts]: Start accepts. Automaton has 7119 states and 17537 transitions. Word has length 59 [2021-06-05 05:52:00,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:52:00,542 INFO L482 AbstractCegarLoop]: Abstraction has 7119 states and 17537 transitions. [2021-06-05 05:52:00,542 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 3.096774193548387) internal successors, (96), 30 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:52:00,542 INFO L276 IsEmpty]: Start isEmpty. Operand 7119 states and 17537 transitions. [2021-06-05 05:52:00,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-06-05 05:52:00,547 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:52:00,547 INFO L521 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:52:00,747 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,68 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:52:00,747 INFO L430 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:52:00,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:52:00,748 INFO L82 PathProgramCache]: Analyzing trace with hash -868342953, now seen corresponding path program 65 times [2021-06-05 05:52:00,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:52:00,748 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565195537] [2021-06-05 05:52:00,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:52:00,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:52:01,034 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:52:01,035 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:52:01,035 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565195537] [2021-06-05 05:52:01,035 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565195537] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:52:01,035 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110081859] [2021-06-05 05:52:01,035 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:52:01,067 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-06-05 05:52:01,068 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:52:01,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 58 conjunts are in the unsatisfiable core [2021-06-05 05:52:01,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:52:01,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:01,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:01,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:01,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:01,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:01,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:01,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:01,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:01,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:01,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:01,610 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:52:01,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:01,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:01,612 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:52:01,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:01,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:01,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:01,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:01,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:01,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:01,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:01,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:01,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:01,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:01,619 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:52:01,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:01,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:01,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:01,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:01,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:01,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:01,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:01,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:01,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:01,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:01,626 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:52:01,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:01,627 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:52:01,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:01,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:01,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:01,629 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:52:01,642 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 13 select indices, 13 select index equivalence classes, 21 disjoint index pairs (out of 78 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 48 [2021-06-05 05:52:01,644 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:52:01,651 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:52:01,653 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:52:01,653 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:132, output treesize:7 [2021-06-05 05:52:01,666 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 11 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:52:01,666 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110081859] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:52:01,666 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:52:01,667 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18] total 28 [2021-06-05 05:52:01,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597141747] [2021-06-05 05:52:01,667 INFO L462 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-06-05 05:52:01,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:52:01,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-06-05 05:52:01,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=712, Unknown=0, NotChecked=0, Total=812 [2021-06-05 05:52:01,668 INFO L87 Difference]: Start difference. First operand 7119 states and 17537 transitions. Second operand has 29 states, 29 states have (on average 3.310344827586207) internal successors, (96), 28 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:52:02,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:52:02,801 INFO L93 Difference]: Finished difference Result 10663 states and 26371 transitions. [2021-06-05 05:52:02,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-05 05:52:02,801 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.310344827586207) internal successors, (96), 28 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-06-05 05:52:02,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:52:02,811 INFO L225 Difference]: With dead ends: 10663 [2021-06-05 05:52:02,811 INFO L226 Difference]: Without dead ends: 10335 [2021-06-05 05:52:02,811 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 47 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 578 ImplicationChecksByTransitivity, 1133.1ms TimeCoverageRelationStatistics Valid=244, Invalid=2012, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 05:52:02,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10335 states. [2021-06-05 05:52:02,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10335 to 7583. [2021-06-05 05:52:02,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7583 states, 7582 states have (on average 2.4638617778950147) internal successors, (18681), 7582 states have internal predecessors, (18681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:52:02,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7583 states to 7583 states and 18681 transitions. [2021-06-05 05:52:02,897 INFO L78 Accepts]: Start accepts. Automaton has 7583 states and 18681 transitions. Word has length 59 [2021-06-05 05:52:02,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:52:02,897 INFO L482 AbstractCegarLoop]: Abstraction has 7583 states and 18681 transitions. [2021-06-05 05:52:02,897 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 3.310344827586207) internal successors, (96), 28 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:52:02,897 INFO L276 IsEmpty]: Start isEmpty. Operand 7583 states and 18681 transitions. [2021-06-05 05:52:02,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-06-05 05:52:02,903 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:52:02,903 INFO L521 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:52:03,104 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,69 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:52:03,104 INFO L430 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:52:03,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:52:03,105 INFO L82 PathProgramCache]: Analyzing trace with hash 264697687, now seen corresponding path program 66 times [2021-06-05 05:52:03,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:52:03,105 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131247618] [2021-06-05 05:52:03,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:52:03,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:52:03,466 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:52:03,466 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:52:03,466 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131247618] [2021-06-05 05:52:03,466 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131247618] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:52:03,466 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893141832] [2021-06-05 05:52:03,466 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:52:03,507 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-06-05 05:52:03,507 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:52:03,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 58 conjunts are in the unsatisfiable core [2021-06-05 05:52:03,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:52:04,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:04,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:04,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:04,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:04,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:04,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:04,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:04,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:04,326 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:52:04,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:04,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:04,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:04,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:04,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:04,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:04,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:04,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:04,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:04,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:04,333 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:52:04,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:04,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:04,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:04,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:04,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:04,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:04,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:04,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:04,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:04,339 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:52:04,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:04,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:04,341 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:52:04,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:04,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:04,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:04,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:04,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:04,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:04,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:04,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:04,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:04,347 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:52:04,348 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:52:04,348 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 13 select indices, 13 select index equivalence classes, 21 disjoint index pairs (out of 78 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 48 [2021-06-05 05:52:04,349 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:52:04,356 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:52:04,357 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:52:04,357 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:137, output treesize:7 [2021-06-05 05:52:04,367 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:52:04,367 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1893141832] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:52:04,367 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:52:04,367 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18] total 30 [2021-06-05 05:52:04,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820201903] [2021-06-05 05:52:04,368 INFO L462 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-06-05 05:52:04,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:52:04,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-06-05 05:52:04,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=846, Unknown=0, NotChecked=0, Total=930 [2021-06-05 05:52:04,368 INFO L87 Difference]: Start difference. First operand 7583 states and 18681 transitions. Second operand has 31 states, 31 states have (on average 3.161290322580645) internal successors, (98), 30 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:52:11,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:52:11,314 INFO L93 Difference]: Finished difference Result 14399 states and 35669 transitions. [2021-06-05 05:52:11,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-05 05:52:11,314 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.161290322580645) internal successors, (98), 30 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-06-05 05:52:11,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:52:11,328 INFO L225 Difference]: With dead ends: 14399 [2021-06-05 05:52:11,328 INFO L226 Difference]: Without dead ends: 13951 [2021-06-05 05:52:11,328 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 611 ImplicationChecksByTransitivity, 2647.5ms TimeCoverageRelationStatistics Valid=299, Invalid=2893, Unknown=0, NotChecked=0, Total=3192 [2021-06-05 05:52:11,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13951 states. [2021-06-05 05:52:11,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13951 to 7711. [2021-06-05 05:52:11,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7711 states, 7710 states have (on average 2.461348897535668) internal successors, (18977), 7710 states have internal predecessors, (18977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:52:11,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7711 states to 7711 states and 18977 transitions. [2021-06-05 05:52:11,426 INFO L78 Accepts]: Start accepts. Automaton has 7711 states and 18977 transitions. Word has length 59 [2021-06-05 05:52:11,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:52:11,426 INFO L482 AbstractCegarLoop]: Abstraction has 7711 states and 18977 transitions. [2021-06-05 05:52:11,426 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 3.161290322580645) internal successors, (98), 30 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:52:11,426 INFO L276 IsEmpty]: Start isEmpty. Operand 7711 states and 18977 transitions. [2021-06-05 05:52:11,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-06-05 05:52:11,431 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:52:11,431 INFO L521 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:52:11,631 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,70 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:52:11,631 INFO L430 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:52:11,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:52:11,632 INFO L82 PathProgramCache]: Analyzing trace with hash -87700649, now seen corresponding path program 67 times [2021-06-05 05:52:11,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:52:11,632 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474429861] [2021-06-05 05:52:11,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:52:11,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:52:11,948 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:52:11,949 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:52:11,949 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474429861] [2021-06-05 05:52:11,949 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474429861] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:52:11,949 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545318465] [2021-06-05 05:52:11,949 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:52:11,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:52:11,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 58 conjunts are in the unsatisfiable core [2021-06-05 05:52:11,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:52:12,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:12,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:12,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:12,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:12,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:12,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:12,617 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:52:12,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:12,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:12,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:12,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:12,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:12,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:12,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:12,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:12,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:12,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:12,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:12,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:12,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:12,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:12,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:12,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:12,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:12,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:12,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:12,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:12,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:12,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:12,638 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:52:12,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:12,639 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:52:12,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:12,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:12,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:12,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:12,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:12,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:12,645 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:52:12,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:12,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:12,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:12,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:12,649 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:52:12,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:12,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:12,652 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:52:12,652 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 13 select indices, 13 select index equivalence classes, 21 disjoint index pairs (out of 78 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 48 [2021-06-05 05:52:12,653 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:52:12,659 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:52:12,660 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:52:12,660 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:132, output treesize:7 [2021-06-05 05:52:12,670 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:52:12,670 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1545318465] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:52:12,670 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:52:12,670 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 30 [2021-06-05 05:52:12,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503461762] [2021-06-05 05:52:12,671 INFO L462 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-06-05 05:52:12,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:52:12,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-06-05 05:52:12,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=816, Unknown=0, NotChecked=0, Total=930 [2021-06-05 05:52:12,671 INFO L87 Difference]: Start difference. First operand 7711 states and 18977 transitions. Second operand has 31 states, 31 states have (on average 3.096774193548387) internal successors, (96), 30 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:52:13,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:52:13,708 INFO L93 Difference]: Finished difference Result 12279 states and 30489 transitions. [2021-06-05 05:52:13,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-05 05:52:13,713 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.096774193548387) internal successors, (96), 30 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-06-05 05:52:13,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:52:13,726 INFO L225 Difference]: With dead ends: 12279 [2021-06-05 05:52:13,726 INFO L226 Difference]: Without dead ends: 12191 [2021-06-05 05:52:13,726 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 589 ImplicationChecksByTransitivity, 1120.1ms TimeCoverageRelationStatistics Valid=258, Invalid=2192, Unknown=0, NotChecked=0, Total=2450 [2021-06-05 05:52:13,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12191 states. [2021-06-05 05:52:13,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12191 to 7743. [2021-06-05 05:52:13,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7743 states, 7742 states have (on average 2.461508654094549) internal successors, (19057), 7742 states have internal predecessors, (19057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:52:13,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7743 states to 7743 states and 19057 transitions. [2021-06-05 05:52:13,870 INFO L78 Accepts]: Start accepts. Automaton has 7743 states and 19057 transitions. Word has length 59 [2021-06-05 05:52:13,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:52:13,870 INFO L482 AbstractCegarLoop]: Abstraction has 7743 states and 19057 transitions. [2021-06-05 05:52:13,870 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 3.096774193548387) internal successors, (96), 30 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:52:13,870 INFO L276 IsEmpty]: Start isEmpty. Operand 7743 states and 19057 transitions. [2021-06-05 05:52:13,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-06-05 05:52:13,875 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:52:13,875 INFO L521 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:52:14,088 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable73 [2021-06-05 05:52:14,089 INFO L430 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:52:14,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:52:14,089 INFO L82 PathProgramCache]: Analyzing trace with hash -1298041513, now seen corresponding path program 68 times [2021-06-05 05:52:14,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:52:14,089 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344148917] [2021-06-05 05:52:14,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:52:14,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:52:14,377 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:52:14,377 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:52:14,377 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344148917] [2021-06-05 05:52:14,377 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344148917] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:52:14,377 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [79888403] [2021-06-05 05:52:14,377 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:52:14,406 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 05:52:14,406 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:52:14,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 58 conjunts are in the unsatisfiable core [2021-06-05 05:52:14,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:52:15,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:15,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:15,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:15,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:15,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:15,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:15,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:15,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:15,078 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:52:15,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:15,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:15,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:15,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:15,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:15,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:15,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:15,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:15,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:15,085 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:52:15,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:15,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:15,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:15,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:15,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:15,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:15,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:15,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:15,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:15,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:15,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:15,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:15,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:15,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:15,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:15,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:15,096 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:52:15,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:15,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:15,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:15,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:15,099 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:52:15,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:15,100 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:52:15,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:15,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:15,102 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:52:15,102 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 13 select indices, 13 select index equivalence classes, 21 disjoint index pairs (out of 78 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 48 [2021-06-05 05:52:15,103 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:52:15,108 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:52:15,109 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:52:15,109 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:132, output treesize:7 [2021-06-05 05:52:15,133 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:52:15,133 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [79888403] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:52:15,133 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:52:15,133 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 30 [2021-06-05 05:52:15,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67296857] [2021-06-05 05:52:15,133 INFO L462 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-06-05 05:52:15,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:52:15,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-06-05 05:52:15,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=814, Unknown=0, NotChecked=0, Total=930 [2021-06-05 05:52:15,134 INFO L87 Difference]: Start difference. First operand 7743 states and 19057 transitions. Second operand has 31 states, 31 states have (on average 3.096774193548387) internal successors, (96), 30 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:52:16,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:52:16,066 INFO L93 Difference]: Finished difference Result 10551 states and 26097 transitions. [2021-06-05 05:52:16,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-05 05:52:16,066 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.096774193548387) internal successors, (96), 30 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-06-05 05:52:16,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:52:16,075 INFO L225 Difference]: With dead ends: 10551 [2021-06-05 05:52:16,075 INFO L226 Difference]: Without dead ends: 10511 [2021-06-05 05:52:16,075 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 563 ImplicationChecksByTransitivity, 1102.2ms TimeCoverageRelationStatistics Valid=250, Invalid=2102, Unknown=0, NotChecked=0, Total=2352 [2021-06-05 05:52:16,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10511 states. [2021-06-05 05:52:16,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10511 to 7759. [2021-06-05 05:52:16,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7759 states, 7758 states have (on average 2.4615880381541633) internal successors, (19097), 7758 states have internal predecessors, (19097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:52:16,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7759 states to 7759 states and 19097 transitions. [2021-06-05 05:52:16,185 INFO L78 Accepts]: Start accepts. Automaton has 7759 states and 19097 transitions. Word has length 59 [2021-06-05 05:52:16,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:52:16,185 INFO L482 AbstractCegarLoop]: Abstraction has 7759 states and 19097 transitions. [2021-06-05 05:52:16,185 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 3.096774193548387) internal successors, (96), 30 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:52:16,185 INFO L276 IsEmpty]: Start isEmpty. Operand 7759 states and 19097 transitions. [2021-06-05 05:52:16,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-06-05 05:52:16,190 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:52:16,190 INFO L521 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:52:16,390 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,72 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:52:16,391 INFO L430 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:52:16,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:52:16,391 INFO L82 PathProgramCache]: Analyzing trace with hash -704558249, now seen corresponding path program 69 times [2021-06-05 05:52:16,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:52:16,391 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693724628] [2021-06-05 05:52:16,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:52:16,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:52:16,707 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:52:16,708 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:52:16,708 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693724628] [2021-06-05 05:52:16,708 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693724628] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:52:16,708 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442245505] [2021-06-05 05:52:16,708 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:52:16,740 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-06-05 05:52:16,740 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:52:16,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 57 conjunts are in the unsatisfiable core [2021-06-05 05:52:16,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:52:17,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:17,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:17,780 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:52:17,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:17,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:17,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:17,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:17,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:17,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:17,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:17,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:17,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:17,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:17,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:17,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:17,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:17,789 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:52:17,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:17,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:17,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:17,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:17,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:17,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:17,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:17,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:17,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:17,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:17,796 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:52:17,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:17,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:17,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:17,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:17,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:17,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:17,801 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:52:17,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:17,802 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:52:17,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:17,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:17,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:17,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:17,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:17,805 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:52:17,806 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 13 select indices, 13 select index equivalence classes, 21 disjoint index pairs (out of 78 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 48 [2021-06-05 05:52:17,807 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:52:17,827 INFO L628 ElimStorePlain]: treesize reduction 5, result has 86.5 percent of original size [2021-06-05 05:52:17,828 INFO L550 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:52:17,828 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:150, output treesize:7 [2021-06-05 05:52:17,840 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:52:17,840 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442245505] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:52:17,840 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:52:17,840 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 30 [2021-06-05 05:52:17,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868989308] [2021-06-05 05:52:17,840 INFO L462 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-06-05 05:52:17,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:52:17,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-06-05 05:52:17,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=843, Unknown=0, NotChecked=0, Total=930 [2021-06-05 05:52:17,841 INFO L87 Difference]: Start difference. First operand 7759 states and 19097 transitions. Second operand has 31 states, 31 states have (on average 3.032258064516129) internal successors, (94), 30 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:52:21,085 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-06-05 05:52:24,404 WARN L205 SmtUtils]: Spent 873.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 71 [2021-06-05 05:52:26,929 WARN L205 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 91 DAG size of output: 74 [2021-06-05 05:52:35,714 WARN L205 SmtUtils]: Spent 541.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 73 [2021-06-05 05:52:39,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:52:39,155 INFO L93 Difference]: Finished difference Result 19539 states and 48285 transitions. [2021-06-05 05:52:39,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 05:52:39,157 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.032258064516129) internal successors, (94), 30 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-06-05 05:52:39,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:52:39,175 INFO L225 Difference]: With dead ends: 19539 [2021-06-05 05:52:39,175 INFO L226 Difference]: Without dead ends: 18831 [2021-06-05 05:52:39,175 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1106 ImplicationChecksByTransitivity, 9207.2ms TimeCoverageRelationStatistics Valid=456, Invalid=4656, Unknown=0, NotChecked=0, Total=5112 [2021-06-05 05:52:39,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18831 states. [2021-06-05 05:52:39,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18831 to 7551. [2021-06-05 05:52:39,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7551 states, 7550 states have (on average 2.463708609271523) internal successors, (18601), 7550 states have internal predecessors, (18601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:52:39,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7551 states to 7551 states and 18601 transitions. [2021-06-05 05:52:39,296 INFO L78 Accepts]: Start accepts. Automaton has 7551 states and 18601 transitions. Word has length 59 [2021-06-05 05:52:39,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:52:39,296 INFO L482 AbstractCegarLoop]: Abstraction has 7551 states and 18601 transitions. [2021-06-05 05:52:39,296 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 3.032258064516129) internal successors, (94), 30 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:52:39,296 INFO L276 IsEmpty]: Start isEmpty. Operand 7551 states and 18601 transitions. [2021-06-05 05:52:39,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-06-05 05:52:39,300 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:52:39,300 INFO L521 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:52:39,500 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,73 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:52:39,501 INFO L430 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:52:39,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:52:39,501 INFO L82 PathProgramCache]: Analyzing trace with hash 672165207, now seen corresponding path program 70 times [2021-06-05 05:52:39,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:52:39,501 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091288892] [2021-06-05 05:52:39,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:52:39,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:52:39,787 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:52:39,787 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:52:39,787 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091288892] [2021-06-05 05:52:39,787 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091288892] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:52:39,787 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262586781] [2021-06-05 05:52:39,787 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:52:39,817 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 05:52:39,818 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:52:39,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 58 conjunts are in the unsatisfiable core [2021-06-05 05:52:39,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:52:40,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:40,390 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:52:40,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:40,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:40,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:40,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:40,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:40,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:40,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:40,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:40,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:40,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:40,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:40,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:40,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:40,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:40,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:40,400 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:52:40,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:40,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:40,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:40,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:40,404 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:52:40,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:40,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:40,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:40,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:40,408 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:52:40,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:40,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:40,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:40,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:40,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:40,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:40,412 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:52:40,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:40,413 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 21 disjoint index pairs (out of 66 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 48 [2021-06-05 05:52:40,414 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:52:40,419 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:52:40,420 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:52:40,420 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:132, output treesize:7 [2021-06-05 05:52:40,430 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:52:40,430 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1262586781] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:52:40,430 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:52:40,430 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 29 [2021-06-05 05:52:40,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060602850] [2021-06-05 05:52:40,430 INFO L462 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-06-05 05:52:40,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:52:40,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-06-05 05:52:40,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=761, Unknown=0, NotChecked=0, Total=870 [2021-06-05 05:52:40,431 INFO L87 Difference]: Start difference. First operand 7551 states and 18601 transitions. Second operand has 30 states, 30 states have (on average 3.066666666666667) internal successors, (92), 29 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:52:42,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:52:42,015 INFO L93 Difference]: Finished difference Result 14343 states and 35633 transitions. [2021-06-05 05:52:42,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-05 05:52:42,016 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.066666666666667) internal successors, (92), 29 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-06-05 05:52:42,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:52:42,029 INFO L225 Difference]: With dead ends: 14343 [2021-06-05 05:52:42,029 INFO L226 Difference]: Without dead ends: 14255 [2021-06-05 05:52:42,029 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 45 SyntacticMatches, 3 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 780 ImplicationChecksByTransitivity, 1218.6ms TimeCoverageRelationStatistics Valid=322, Invalid=2870, Unknown=0, NotChecked=0, Total=3192 [2021-06-05 05:52:42,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14255 states. [2021-06-05 05:52:42,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14255 to 7743. [2021-06-05 05:52:42,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7743 states, 7742 states have (on average 2.4604753293722554) internal successors, (19049), 7742 states have internal predecessors, (19049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:52:42,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7743 states to 7743 states and 19049 transitions. [2021-06-05 05:52:42,130 INFO L78 Accepts]: Start accepts. Automaton has 7743 states and 19049 transitions. Word has length 59 [2021-06-05 05:52:42,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:52:42,130 INFO L482 AbstractCegarLoop]: Abstraction has 7743 states and 19049 transitions. [2021-06-05 05:52:42,130 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 3.066666666666667) internal successors, (92), 29 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:52:42,130 INFO L276 IsEmpty]: Start isEmpty. Operand 7743 states and 19049 transitions. [2021-06-05 05:52:42,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-06-05 05:52:42,134 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:52:42,134 INFO L521 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:52:42,334 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,74 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:52:42,334 INFO L430 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:52:42,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:52:42,335 INFO L82 PathProgramCache]: Analyzing trace with hash -538175657, now seen corresponding path program 71 times [2021-06-05 05:52:42,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:52:42,335 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188755836] [2021-06-05 05:52:42,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:52:42,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:52:42,627 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:52:42,628 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:52:42,628 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188755836] [2021-06-05 05:52:42,628 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188755836] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:52:42,628 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [545004052] [2021-06-05 05:52:42,628 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:52:42,690 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-06-05 05:52:42,690 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:52:42,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 60 conjunts are in the unsatisfiable core [2021-06-05 05:52:42,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:52:43,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:43,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:43,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:43,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:43,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:43,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:43,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:43,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:43,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:43,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:43,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:43,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:43,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:43,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:43,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:43,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:43,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:43,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:43,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:43,259 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:52:43,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:43,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:43,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:43,261 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:52:43,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:43,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:43,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:43,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:43,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:43,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:43,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:43,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:43,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:43,268 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:52:43,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:43,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:43,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:43,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:43,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:43,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:43,272 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:52:43,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:43,273 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:52:43,274 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 21 disjoint index pairs (out of 66 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 48 [2021-06-05 05:52:43,276 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:52:43,281 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:52:43,282 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:52:43,282 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:132, output treesize:7 [2021-06-05 05:52:43,292 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:52:43,292 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [545004052] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:52:43,292 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:52:43,292 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 29 [2021-06-05 05:52:43,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209855420] [2021-06-05 05:52:43,292 INFO L462 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-06-05 05:52:43,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:52:43,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-06-05 05:52:43,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=759, Unknown=0, NotChecked=0, Total=870 [2021-06-05 05:52:43,292 INFO L87 Difference]: Start difference. First operand 7743 states and 19049 transitions. Second operand has 30 states, 30 states have (on average 3.066666666666667) internal successors, (92), 29 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:52:44,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:52:44,861 INFO L93 Difference]: Finished difference Result 13935 states and 34589 transitions. [2021-06-05 05:52:44,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-05 05:52:44,861 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.066666666666667) internal successors, (92), 29 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-06-05 05:52:44,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:52:44,874 INFO L225 Difference]: With dead ends: 13935 [2021-06-05 05:52:44,875 INFO L226 Difference]: Without dead ends: 13439 [2021-06-05 05:52:44,875 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 45 SyntacticMatches, 3 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 782 ImplicationChecksByTransitivity, 1236.5ms TimeCoverageRelationStatistics Valid=328, Invalid=2864, Unknown=0, NotChecked=0, Total=3192 [2021-06-05 05:52:44,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13439 states. [2021-06-05 05:52:44,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13439 to 8063. [2021-06-05 05:52:44,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8063 states, 8062 states have (on average 2.4620441577772265) internal successors, (19849), 8062 states have internal predecessors, (19849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:52:44,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8063 states to 8063 states and 19849 transitions. [2021-06-05 05:52:44,989 INFO L78 Accepts]: Start accepts. Automaton has 8063 states and 19849 transitions. Word has length 59 [2021-06-05 05:52:44,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:52:44,989 INFO L482 AbstractCegarLoop]: Abstraction has 8063 states and 19849 transitions. [2021-06-05 05:52:44,989 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 3.066666666666667) internal successors, (92), 29 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:52:44,989 INFO L276 IsEmpty]: Start isEmpty. Operand 8063 states and 19849 transitions. [2021-06-05 05:52:44,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-06-05 05:52:44,993 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:52:44,993 INFO L521 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:52:45,194 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2021-06-05 05:52:45,194 INFO L430 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:52:45,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:52:45,194 INFO L82 PathProgramCache]: Analyzing trace with hash -1248989353, now seen corresponding path program 72 times [2021-06-05 05:52:45,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:52:45,194 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452948027] [2021-06-05 05:52:45,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:52:45,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:52:45,513 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:52:45,513 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:52:45,513 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452948027] [2021-06-05 05:52:45,514 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452948027] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:52:45,514 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614234636] [2021-06-05 05:52:45,514 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:52:45,552 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-06-05 05:52:45,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:52:45,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 58 conjunts are in the unsatisfiable core [2021-06-05 05:52:45,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:52:46,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:46,090 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:52:46,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:46,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:46,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:46,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:46,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:46,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:46,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:46,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:46,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:46,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:46,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:46,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:46,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:46,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:46,101 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:52:46,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:46,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:46,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:46,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:46,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:46,104 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:52:46,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:46,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:46,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:46,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:46,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:46,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:46,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:46,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:46,110 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:52:46,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:46,111 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 11 select indices, 11 select index equivalence classes, 21 disjoint index pairs (out of 55 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 48 [2021-06-05 05:52:46,113 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:52:46,119 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:52:46,120 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:52:46,120 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:132, output treesize:7 [2021-06-05 05:52:46,130 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 11 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:52:46,130 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [614234636] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:52:46,130 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:52:46,130 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18] total 26 [2021-06-05 05:52:46,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579873120] [2021-06-05 05:52:46,130 INFO L462 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-06-05 05:52:46,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:52:46,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-06-05 05:52:46,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=611, Unknown=0, NotChecked=0, Total=702 [2021-06-05 05:52:46,130 INFO L87 Difference]: Start difference. First operand 8063 states and 19849 transitions. Second operand has 27 states, 27 states have (on average 3.259259259259259) internal successors, (88), 26 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:52:47,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:52:47,775 INFO L93 Difference]: Finished difference Result 12375 states and 30459 transitions. [2021-06-05 05:52:47,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-05 05:52:47,776 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.259259259259259) internal successors, (88), 26 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-06-05 05:52:47,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:52:47,785 INFO L225 Difference]: With dead ends: 12375 [2021-06-05 05:52:47,785 INFO L226 Difference]: Without dead ends: 11919 [2021-06-05 05:52:47,785 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 47 SyntacticMatches, 4 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 745 ImplicationChecksByTransitivity, 1438.2ms TimeCoverageRelationStatistics Valid=297, Invalid=2565, Unknown=0, NotChecked=0, Total=2862 [2021-06-05 05:52:47,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11919 states. [2021-06-05 05:52:47,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11919 to 9231. [2021-06-05 05:52:47,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9231 states, 9230 states have (on average 2.459913326110509) internal successors, (22705), 9230 states have internal predecessors, (22705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:52:47,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9231 states to 9231 states and 22705 transitions. [2021-06-05 05:52:47,883 INFO L78 Accepts]: Start accepts. Automaton has 9231 states and 22705 transitions. Word has length 59 [2021-06-05 05:52:47,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:52:47,883 INFO L482 AbstractCegarLoop]: Abstraction has 9231 states and 22705 transitions. [2021-06-05 05:52:47,883 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 3.259259259259259) internal successors, (88), 26 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:52:47,883 INFO L276 IsEmpty]: Start isEmpty. Operand 9231 states and 22705 transitions. [2021-06-05 05:52:47,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-06-05 05:52:47,888 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:52:47,888 INFO L521 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:52:48,089 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,76 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:52:48,089 INFO L430 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:52:48,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:52:48,089 INFO L82 PathProgramCache]: Analyzing trace with hash -468347049, now seen corresponding path program 73 times [2021-06-05 05:52:48,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:52:48,089 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17639529] [2021-06-05 05:52:48,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:52:48,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:52:48,381 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:52:48,381 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:52:48,381 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17639529] [2021-06-05 05:52:48,381 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17639529] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:52:48,381 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725406316] [2021-06-05 05:52:48,381 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:52:48,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:52:48,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 58 conjunts are in the unsatisfiable core [2021-06-05 05:52:48,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:52:48,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:48,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:48,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:48,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:48,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:48,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:48,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:48,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:48,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:48,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:48,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:48,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:48,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:48,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:48,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:48,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:48,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:48,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:48,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:48,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:48,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:48,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:48,941 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:52:48,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:48,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:48,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:48,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:48,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:48,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:48,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:48,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:48,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:48,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:48,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:48,949 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:52:48,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:48,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:48,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:48,951 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:52:48,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:48,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:48,953 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:52:48,953 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 11 select indices, 11 select index equivalence classes, 21 disjoint index pairs (out of 55 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 48 [2021-06-05 05:52:48,963 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:52:48,968 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:52:48,969 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:52:48,969 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:132, output treesize:7 [2021-06-05 05:52:48,979 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:52:48,979 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1725406316] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:52:48,979 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:52:48,979 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 28 [2021-06-05 05:52:48,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623131905] [2021-06-05 05:52:48,980 INFO L462 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-06-05 05:52:48,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:52:48,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-06-05 05:52:48,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=706, Unknown=0, NotChecked=0, Total=812 [2021-06-05 05:52:48,980 INFO L87 Difference]: Start difference. First operand 9231 states and 22705 transitions. Second operand has 29 states, 29 states have (on average 3.0344827586206895) internal successors, (88), 28 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:52:49,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:52:49,979 INFO L93 Difference]: Finished difference Result 15815 states and 39361 transitions. [2021-06-05 05:52:49,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 05:52:49,979 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.0344827586206895) internal successors, (88), 28 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-06-05 05:52:49,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:52:49,994 INFO L225 Difference]: With dead ends: 15815 [2021-06-05 05:52:49,994 INFO L226 Difference]: Without dead ends: 15631 [2021-06-05 05:52:49,994 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 45 SyntacticMatches, 4 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 578 ImplicationChecksByTransitivity, 1105.4ms TimeCoverageRelationStatistics Valid=273, Invalid=2277, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 05:52:50,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15631 states. [2021-06-05 05:52:50,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15631 to 9551. [2021-06-05 05:52:50,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9551 states, 9550 states have (on average 2.4612565445026178) internal successors, (23505), 9550 states have internal predecessors, (23505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:52:50,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9551 states to 9551 states and 23505 transitions. [2021-06-05 05:52:50,112 INFO L78 Accepts]: Start accepts. Automaton has 9551 states and 23505 transitions. Word has length 59 [2021-06-05 05:52:50,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:52:50,113 INFO L482 AbstractCegarLoop]: Abstraction has 9551 states and 23505 transitions. [2021-06-05 05:52:50,113 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 3.0344827586206895) internal successors, (88), 28 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:52:50,113 INFO L276 IsEmpty]: Start isEmpty. Operand 9551 states and 23505 transitions. [2021-06-05 05:52:50,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-06-05 05:52:50,118 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:52:50,118 INFO L521 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:52:50,318 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2021-06-05 05:52:50,318 INFO L430 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:52:50,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:52:50,319 INFO L82 PathProgramCache]: Analyzing trace with hash -1678687913, now seen corresponding path program 74 times [2021-06-05 05:52:50,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:52:50,319 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937664478] [2021-06-05 05:52:50,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:52:50,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:52:50,618 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:52:50,618 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:52:50,619 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937664478] [2021-06-05 05:52:50,619 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937664478] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:52:50,619 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77376657] [2021-06-05 05:52:50,619 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:52:50,650 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 05:52:50,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:52:50,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 58 conjunts are in the unsatisfiable core [2021-06-05 05:52:50,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:52:51,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:51,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:51,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:51,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:51,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:51,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:51,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:51,206 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:52:51,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:51,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:51,208 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:52:51,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:51,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:51,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:51,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:51,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:51,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:51,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:51,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:51,214 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:52:51,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:51,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:51,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:51,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:51,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:51,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:51,218 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:52:51,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:51,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:51,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:51,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:51,221 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 11 select indices, 11 select index equivalence classes, 21 disjoint index pairs (out of 55 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 48 [2021-06-05 05:52:51,222 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:52:51,227 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:52:51,229 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:52:51,229 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:132, output treesize:7 [2021-06-05 05:52:51,238 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:52:51,239 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [77376657] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:52:51,239 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:52:51,239 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 28 [2021-06-05 05:52:51,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272176196] [2021-06-05 05:52:51,239 INFO L462 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-06-05 05:52:51,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:52:51,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-06-05 05:52:51,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=704, Unknown=0, NotChecked=0, Total=812 [2021-06-05 05:52:51,239 INFO L87 Difference]: Start difference. First operand 9551 states and 23505 transitions. Second operand has 29 states, 29 states have (on average 3.0344827586206895) internal successors, (88), 28 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:52:52,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:52:52,351 INFO L93 Difference]: Finished difference Result 12711 states and 31401 transitions. [2021-06-05 05:52:52,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-05 05:52:52,351 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.0344827586206895) internal successors, (88), 28 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-06-05 05:52:52,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:52:52,364 INFO L225 Difference]: With dead ends: 12711 [2021-06-05 05:52:52,364 INFO L226 Difference]: Without dead ends: 12671 [2021-06-05 05:52:52,364 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 45 SyntacticMatches, 4 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 491 ImplicationChecksByTransitivity, 1065.0ms TimeCoverageRelationStatistics Valid=247, Invalid=2009, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 05:52:52,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12671 states. [2021-06-05 05:52:52,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12671 to 9567. [2021-06-05 05:52:52,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9567 states, 9566 states have (on average 2.461321346435292) internal successors, (23545), 9566 states have internal predecessors, (23545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:52:52,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9567 states to 9567 states and 23545 transitions. [2021-06-05 05:52:52,471 INFO L78 Accepts]: Start accepts. Automaton has 9567 states and 23545 transitions. Word has length 59 [2021-06-05 05:52:52,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:52:52,471 INFO L482 AbstractCegarLoop]: Abstraction has 9567 states and 23545 transitions. [2021-06-05 05:52:52,472 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 3.0344827586206895) internal successors, (88), 28 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:52:52,472 INFO L276 IsEmpty]: Start isEmpty. Operand 9567 states and 23545 transitions. [2021-06-05 05:52:52,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-06-05 05:52:52,477 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:52:52,477 INFO L521 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:52:52,677 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,78 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:52:52,677 INFO L430 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:52:52,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:52:52,677 INFO L82 PathProgramCache]: Analyzing trace with hash 1191043927, now seen corresponding path program 75 times [2021-06-05 05:52:52,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:52:52,678 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202840225] [2021-06-05 05:52:52,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:52:52,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:52:53,041 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:52:53,041 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:52:53,041 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202840225] [2021-06-05 05:52:53,042 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202840225] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:52:53,042 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887821383] [2021-06-05 05:52:53,042 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:52:53,083 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-06-05 05:52:53,083 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:52:53,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 58 conjunts are in the unsatisfiable core [2021-06-05 05:52:53,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:52:53,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:53,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:53,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:53,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:53,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:53,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:53,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:53,585 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:52:53,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:53,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:53,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:53,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:53,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:53,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:53,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:53,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:53,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:53,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:53,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:53,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:53,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:53,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:53,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:53,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:53,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:53,596 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:52:53,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:53,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:53,598 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:52:53,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:53,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:53,639 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 21 disjoint index pairs (out of 45 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 48 [2021-06-05 05:52:53,640 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:52:53,645 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:52:53,646 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:52:53,646 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:132, output treesize:7 [2021-06-05 05:52:53,656 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:52:53,656 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1887821383] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:52:53,656 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:52:53,656 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 27 [2021-06-05 05:52:53,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550420189] [2021-06-05 05:52:53,656 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-06-05 05:52:53,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:52:53,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-06-05 05:52:53,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=653, Unknown=0, NotChecked=0, Total=756 [2021-06-05 05:52:53,657 INFO L87 Difference]: Start difference. First operand 9567 states and 23545 transitions. Second operand has 28 states, 28 states have (on average 3.0) internal successors, (84), 27 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:52:54,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:52:54,909 INFO L93 Difference]: Finished difference Result 15167 states and 37549 transitions. [2021-06-05 05:52:54,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 05:52:54,909 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.0) internal successors, (84), 27 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-06-05 05:52:54,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:52:54,923 INFO L225 Difference]: With dead ends: 15167 [2021-06-05 05:52:54,923 INFO L226 Difference]: Without dead ends: 15103 [2021-06-05 05:52:54,923 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 45 SyntacticMatches, 5 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 504 ImplicationChecksByTransitivity, 1133.6ms TimeCoverageRelationStatistics Valid=262, Invalid=2090, Unknown=0, NotChecked=0, Total=2352 [2021-06-05 05:52:54,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15103 states. [2021-06-05 05:52:55,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15103 to 9711. [2021-06-05 05:52:55,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9711 states, 9710 states have (on average 2.461894953656025) internal successors, (23905), 9710 states have internal predecessors, (23905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:52:55,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9711 states to 9711 states and 23905 transitions. [2021-06-05 05:52:55,039 INFO L78 Accepts]: Start accepts. Automaton has 9711 states and 23905 transitions. Word has length 59 [2021-06-05 05:52:55,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:52:55,039 INFO L482 AbstractCegarLoop]: Abstraction has 9711 states and 23905 transitions. [2021-06-05 05:52:55,039 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 3.0) internal successors, (84), 27 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:52:55,039 INFO L276 IsEmpty]: Start isEmpty. Operand 9711 states and 23905 transitions. [2021-06-05 05:52:55,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-06-05 05:52:55,044 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:52:55,044 INFO L521 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:52:55,244 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,79 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:52:55,245 INFO L430 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:52:55,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:52:55,245 INFO L82 PathProgramCache]: Analyzing trace with hash -1469435049, now seen corresponding path program 76 times [2021-06-05 05:52:55,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:52:55,245 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296557040] [2021-06-05 05:52:55,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:52:55,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:52:55,530 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:52:55,530 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:52:55,530 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296557040] [2021-06-05 05:52:55,530 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296557040] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:52:55,530 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [359864045] [2021-06-05 05:52:55,530 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:52:55,559 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 05:52:55,559 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:52:55,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 58 conjunts are in the unsatisfiable core [2021-06-05 05:52:55,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:52:56,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:56,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:56,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:56,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:56,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:56,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:56,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:56,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:56,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:56,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:56,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:56,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:56,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:56,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:56,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:56,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:56,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:56,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:56,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:56,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:56,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:56,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:56,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:56,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:56,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:56,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:56,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:56,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:56,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:56,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:56,034 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:52:56,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:56,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:56,036 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:52:56,036 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 21 disjoint index pairs (out of 36 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 48 [2021-06-05 05:52:56,038 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:52:56,043 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:52:56,044 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:52:56,044 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:132, output treesize:7 [2021-06-05 05:52:56,053 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 11 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:52:56,053 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [359864045] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:52:56,054 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:52:56,054 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18] total 24 [2021-06-05 05:52:56,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806423604] [2021-06-05 05:52:56,054 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 05:52:56,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:52:56,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 05:52:56,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=516, Unknown=0, NotChecked=0, Total=600 [2021-06-05 05:52:56,054 INFO L87 Difference]: Start difference. First operand 9711 states and 23905 transitions. Second operand has 25 states, 25 states have (on average 3.2) internal successors, (80), 24 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:52:57,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:52:57,665 INFO L93 Difference]: Finished difference Result 13955 states and 34295 transitions. [2021-06-05 05:52:57,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 05:52:57,666 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.2) internal successors, (80), 24 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-06-05 05:52:57,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:52:57,679 INFO L225 Difference]: With dead ends: 13955 [2021-06-05 05:52:57,679 INFO L226 Difference]: Without dead ends: 13551 [2021-06-05 05:52:57,679 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 47 SyntacticMatches, 6 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 604 ImplicationChecksByTransitivity, 1269.9ms TimeCoverageRelationStatistics Valid=272, Invalid=2080, Unknown=0, NotChecked=0, Total=2352 [2021-06-05 05:52:57,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13551 states. [2021-06-05 05:52:57,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13551 to 10239. [2021-06-05 05:52:57,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10239 states, 10238 states have (on average 2.4601484664973627) internal successors, (25187), 10238 states have internal predecessors, (25187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:52:57,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10239 states to 10239 states and 25187 transitions. [2021-06-05 05:52:57,861 INFO L78 Accepts]: Start accepts. Automaton has 10239 states and 25187 transitions. Word has length 59 [2021-06-05 05:52:57,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:52:57,862 INFO L482 AbstractCegarLoop]: Abstraction has 10239 states and 25187 transitions. [2021-06-05 05:52:57,862 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.2) internal successors, (80), 24 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:52:57,862 INFO L276 IsEmpty]: Start isEmpty. Operand 10239 states and 25187 transitions. [2021-06-05 05:52:57,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-06-05 05:52:57,866 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:52:57,867 INFO L521 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:52:58,067 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,80 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:52:58,067 INFO L430 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:52:58,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:52:58,067 INFO L82 PathProgramCache]: Analyzing trace with hash 1609234263, now seen corresponding path program 77 times [2021-06-05 05:52:58,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:52:58,068 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370894146] [2021-06-05 05:52:58,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:52:58,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:52:58,361 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:52:58,361 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:52:58,361 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370894146] [2021-06-05 05:52:58,361 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370894146] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:52:58,362 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879891317] [2021-06-05 05:52:58,362 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:52:58,393 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-06-05 05:52:58,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:52:58,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 58 conjunts are in the unsatisfiable core [2021-06-05 05:52:58,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:52:58,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:58,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:58,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:58,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:58,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:58,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:58,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:58,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:58,848 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:52:58,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:58,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:58,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:58,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:58,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:58,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:58,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:58,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:58,854 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:52:58,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:58,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:58,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:58,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:58,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:58,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:58,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:58,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:52:58,859 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 21 disjoint index pairs (out of 36 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 48 [2021-06-05 05:52:58,860 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:52:58,865 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:52:58,866 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:52:58,866 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:132, output treesize:7 [2021-06-05 05:52:58,876 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 11 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:52:58,876 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [879891317] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:52:58,876 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:52:58,876 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18] total 24 [2021-06-05 05:52:58,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134679145] [2021-06-05 05:52:58,877 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 05:52:58,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:52:58,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 05:52:58,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=525, Unknown=0, NotChecked=0, Total=600 [2021-06-05 05:52:58,877 INFO L87 Difference]: Start difference. First operand 10239 states and 25187 transitions. Second operand has 25 states, 25 states have (on average 3.2) internal successors, (80), 24 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:53:00,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:53:00,586 INFO L93 Difference]: Finished difference Result 13031 states and 32033 transitions. [2021-06-05 05:53:00,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-05 05:53:00,586 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.2) internal successors, (80), 24 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-06-05 05:53:00,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:53:00,595 INFO L225 Difference]: With dead ends: 13031 [2021-06-05 05:53:00,595 INFO L226 Difference]: Without dead ends: 12591 [2021-06-05 05:53:00,595 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 47 SyntacticMatches, 6 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 655 ImplicationChecksByTransitivity, 1371.3ms TimeCoverageRelationStatistics Valid=260, Invalid=2290, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 05:53:00,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12591 states. [2021-06-05 05:53:00,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12591 to 9871. [2021-06-05 05:53:00,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9871 states, 9870 states have (on average 2.461094224924012) internal successors, (24291), 9870 states have internal predecessors, (24291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:53:00,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9871 states to 9871 states and 24291 transitions. [2021-06-05 05:53:00,697 INFO L78 Accepts]: Start accepts. Automaton has 9871 states and 24291 transitions. Word has length 59 [2021-06-05 05:53:00,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:53:00,697 INFO L482 AbstractCegarLoop]: Abstraction has 9871 states and 24291 transitions. [2021-06-05 05:53:00,697 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.2) internal successors, (80), 24 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:53:00,697 INFO L276 IsEmpty]: Start isEmpty. Operand 9871 states and 24291 transitions. [2021-06-05 05:53:00,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-06-05 05:53:00,703 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:53:00,703 INFO L521 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:53:00,903 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,81 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:53:00,903 INFO L430 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:53:00,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:53:00,904 INFO L82 PathProgramCache]: Analyzing trace with hash 560577367, now seen corresponding path program 78 times [2021-06-05 05:53:00,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:53:00,904 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754140629] [2021-06-05 05:53:00,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:53:00,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:53:01,170 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:53:01,171 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:53:01,171 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754140629] [2021-06-05 05:53:01,171 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754140629] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:53:01,171 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110590314] [2021-06-05 05:53:01,171 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:53:01,202 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-06-05 05:53:01,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:53:01,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 60 conjunts are in the unsatisfiable core [2021-06-05 05:53:01,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:53:01,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:01,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:01,631 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:53:01,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:01,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:01,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:01,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:01,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:01,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:01,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:01,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:01,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:01,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:01,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:01,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:01,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:01,643 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:53:01,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:01,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:01,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:01,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:01,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:01,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:01,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:01,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:01,649 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 21 disjoint index pairs (out of 36 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 48 [2021-06-05 05:53:01,651 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:53:01,658 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:53:01,659 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:53:01,659 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:132, output treesize:7 [2021-06-05 05:53:01,672 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 11 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:53:01,672 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110590314] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:53:01,673 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:53:01,673 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18] total 24 [2021-06-05 05:53:01,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487276062] [2021-06-05 05:53:01,673 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 05:53:01,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:53:01,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 05:53:01,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=517, Unknown=0, NotChecked=0, Total=600 [2021-06-05 05:53:01,673 INFO L87 Difference]: Start difference. First operand 9871 states and 24291 transitions. Second operand has 25 states, 25 states have (on average 3.2) internal successors, (80), 24 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:53:02,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:53:02,986 INFO L93 Difference]: Finished difference Result 14911 states and 36717 transitions. [2021-06-05 05:53:02,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 05:53:02,986 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.2) internal successors, (80), 24 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-06-05 05:53:02,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:53:03,000 INFO L225 Difference]: With dead ends: 14911 [2021-06-05 05:53:03,000 INFO L226 Difference]: Without dead ends: 14559 [2021-06-05 05:53:03,000 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 47 SyntacticMatches, 6 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 487 ImplicationChecksByTransitivity, 1014.2ms TimeCoverageRelationStatistics Valid=230, Invalid=1840, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 05:53:03,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14559 states. [2021-06-05 05:53:03,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14559 to 11871. [2021-06-05 05:53:03,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11871 states, 11870 states have (on average 2.458887952822241) internal successors, (29187), 11870 states have internal predecessors, (29187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:53:03,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11871 states to 11871 states and 29187 transitions. [2021-06-05 05:53:03,130 INFO L78 Accepts]: Start accepts. Automaton has 11871 states and 29187 transitions. Word has length 59 [2021-06-05 05:53:03,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:53:03,130 INFO L482 AbstractCegarLoop]: Abstraction has 11871 states and 29187 transitions. [2021-06-05 05:53:03,130 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.2) internal successors, (80), 24 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:53:03,130 INFO L276 IsEmpty]: Start isEmpty. Operand 11871 states and 29187 transitions. [2021-06-05 05:53:03,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-06-05 05:53:03,137 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:53:03,138 INFO L521 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:53:03,338 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,82 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:53:03,338 INFO L430 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:53:03,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:53:03,339 INFO L82 PathProgramCache]: Analyzing trace with hash 1552901463, now seen corresponding path program 79 times [2021-06-05 05:53:03,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:53:03,339 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53798411] [2021-06-05 05:53:03,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:53:03,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:53:03,586 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:53:03,586 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:53:03,586 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53798411] [2021-06-05 05:53:03,586 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53798411] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:53:03,586 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [705192426] [2021-06-05 05:53:03,586 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:53:03,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:53:03,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 58 conjunts are in the unsatisfiable core [2021-06-05 05:53:03,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:53:04,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:04,047 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:53:04,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:04,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:04,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:04,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:04,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:04,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:04,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:04,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:04,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:04,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:04,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:04,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:04,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:04,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:04,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:04,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:04,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:04,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:04,060 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:53:04,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:04,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:04,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:04,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:04,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:04,063 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 21 disjoint index pairs (out of 36 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 48 [2021-06-05 05:53:04,064 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:53:04,069 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:53:04,070 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:53:04,070 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:132, output treesize:7 [2021-06-05 05:53:04,080 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:53:04,080 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [705192426] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:53:04,080 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:53:04,080 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18] total 24 [2021-06-05 05:53:04,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698575927] [2021-06-05 05:53:04,081 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 05:53:04,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:53:04,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 05:53:04,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2021-06-05 05:53:04,081 INFO L87 Difference]: Start difference. First operand 11871 states and 29187 transitions. Second operand has 25 states, 25 states have (on average 3.2) internal successors, (80), 24 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:53:05,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:53:05,066 INFO L93 Difference]: Finished difference Result 18871 states and 46707 transitions. [2021-06-05 05:53:05,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 05:53:05,067 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.2) internal successors, (80), 24 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-06-05 05:53:05,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:53:05,086 INFO L225 Difference]: With dead ends: 18871 [2021-06-05 05:53:05,087 INFO L226 Difference]: Without dead ends: 18783 [2021-06-05 05:53:05,087 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 47 SyntacticMatches, 6 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 483 ImplicationChecksByTransitivity, 1017.1ms TimeCoverageRelationStatistics Valid=232, Invalid=1930, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 05:53:05,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18783 states. [2021-06-05 05:53:05,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18783 to 11535. [2021-06-05 05:53:05,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11535 states, 11534 states have (on average 2.4576903069186753) internal successors, (28347), 11534 states have internal predecessors, (28347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:53:05,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11535 states to 11535 states and 28347 transitions. [2021-06-05 05:53:05,241 INFO L78 Accepts]: Start accepts. Automaton has 11535 states and 28347 transitions. Word has length 59 [2021-06-05 05:53:05,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:53:05,241 INFO L482 AbstractCegarLoop]: Abstraction has 11535 states and 28347 transitions. [2021-06-05 05:53:05,241 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.2) internal successors, (80), 24 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:53:05,242 INFO L276 IsEmpty]: Start isEmpty. Operand 11535 states and 28347 transitions. [2021-06-05 05:53:05,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-06-05 05:53:05,249 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:53:05,249 INFO L521 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:53:05,449 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,83 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:53:05,449 INFO L430 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:53:05,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:53:05,449 INFO L82 PathProgramCache]: Analyzing trace with hash 130878807, now seen corresponding path program 80 times [2021-06-05 05:53:05,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:53:05,450 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652083202] [2021-06-05 05:53:05,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:53:05,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:53:05,794 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:53:05,795 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:53:05,795 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652083202] [2021-06-05 05:53:05,795 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652083202] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:53:05,795 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2003566693] [2021-06-05 05:53:05,795 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:53:05,844 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 05:53:05,845 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:53:05,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 58 conjunts are in the unsatisfiable core [2021-06-05 05:53:05,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:53:06,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:06,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:06,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:06,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:06,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:06,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:06,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:06,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:06,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:06,426 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:53:06,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:06,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:06,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:06,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:06,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:06,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:06,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:06,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:06,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:06,433 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:53:06,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:06,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:06,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:06,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:06,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:06,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:06,437 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 21 disjoint index pairs (out of 36 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 48 [2021-06-05 05:53:06,438 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:53:06,443 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:53:06,444 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:53:06,444 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:132, output treesize:7 [2021-06-05 05:53:06,454 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:53:06,454 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2003566693] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:53:06,454 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:53:06,454 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 26 [2021-06-05 05:53:06,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568046461] [2021-06-05 05:53:06,454 INFO L462 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-06-05 05:53:06,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:53:06,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-06-05 05:53:06,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=603, Unknown=0, NotChecked=0, Total=702 [2021-06-05 05:53:06,455 INFO L87 Difference]: Start difference. First operand 11535 states and 28347 transitions. Second operand has 27 states, 27 states have (on average 2.962962962962963) internal successors, (80), 26 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:53:07,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:53:07,776 INFO L93 Difference]: Finished difference Result 17463 states and 43379 transitions. [2021-06-05 05:53:07,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 05:53:07,777 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.962962962962963) internal successors, (80), 26 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-06-05 05:53:07,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:53:07,793 INFO L225 Difference]: With dead ends: 17463 [2021-06-05 05:53:07,794 INFO L226 Difference]: Without dead ends: 17279 [2021-06-05 05:53:07,794 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 45 SyntacticMatches, 6 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 486 ImplicationChecksByTransitivity, 1137.0ms TimeCoverageRelationStatistics Valid=259, Invalid=1997, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 05:53:07,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17279 states. [2021-06-05 05:53:07,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17279 to 11599. [2021-06-05 05:53:07,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11599 states, 11598 states have (on average 2.4579237799620626) internal successors, (28507), 11598 states have internal predecessors, (28507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:53:07,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11599 states to 11599 states and 28507 transitions. [2021-06-05 05:53:07,934 INFO L78 Accepts]: Start accepts. Automaton has 11599 states and 28507 transitions. Word has length 59 [2021-06-05 05:53:07,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:53:07,934 INFO L482 AbstractCegarLoop]: Abstraction has 11599 states and 28507 transitions. [2021-06-05 05:53:07,934 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 2.962962962962963) internal successors, (80), 26 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:53:07,935 INFO L276 IsEmpty]: Start isEmpty. Operand 11599 states and 28507 transitions. [2021-06-05 05:53:07,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-06-05 05:53:07,942 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:53:07,942 INFO L521 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:53:08,142 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,84 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:53:08,142 INFO L430 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:53:08,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:53:08,143 INFO L82 PathProgramCache]: Analyzing trace with hash 741891415, now seen corresponding path program 81 times [2021-06-05 05:53:08,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:53:08,143 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207936919] [2021-06-05 05:53:08,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:53:08,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:53:08,449 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:53:08,449 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:53:08,449 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207936919] [2021-06-05 05:53:08,449 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207936919] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:53:08,449 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616187395] [2021-06-05 05:53:08,449 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:53:08,533 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-06-05 05:53:08,533 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:53:08,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 58 conjunts are in the unsatisfiable core [2021-06-05 05:53:08,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:53:09,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:09,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:09,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:09,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:09,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:09,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:09,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:09,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:09,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:09,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:09,263 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:53:09,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:09,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:09,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:09,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:09,266 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:53:09,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:09,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:09,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:09,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:09,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:09,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:09,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:09,271 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:53:09,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:09,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:09,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:09,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:09,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:09,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:09,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:09,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:09,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:09,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:09,279 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:53:09,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:09,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:09,280 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:53:09,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:09,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:09,282 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:53:09,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:09,283 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 13 select indices, 13 select index equivalence classes, 21 disjoint index pairs (out of 78 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 124 treesize of output 48 [2021-06-05 05:53:09,285 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:53:09,299 INFO L628 ElimStorePlain]: treesize reduction 5, result has 81.5 percent of original size [2021-06-05 05:53:09,300 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:53:09,300 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:144, output treesize:7 [2021-06-05 05:53:09,310 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 13 proven. 115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:53:09,310 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1616187395] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:53:09,310 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:53:09,310 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18] total 28 [2021-06-05 05:53:09,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237091436] [2021-06-05 05:53:09,310 INFO L462 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-06-05 05:53:09,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:53:09,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-06-05 05:53:09,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=713, Unknown=0, NotChecked=0, Total=812 [2021-06-05 05:53:09,311 INFO L87 Difference]: Start difference. First operand 11599 states and 28507 transitions. Second operand has 29 states, 29 states have (on average 3.2413793103448274) internal successors, (94), 28 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:53:12,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:53:12,397 INFO L93 Difference]: Finished difference Result 14723 states and 36187 transitions. [2021-06-05 05:53:12,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-05 05:53:12,397 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.2413793103448274) internal successors, (94), 28 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-06-05 05:53:12,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:53:12,411 INFO L225 Difference]: With dead ends: 14723 [2021-06-05 05:53:12,411 INFO L226 Difference]: Without dead ends: 14255 [2021-06-05 05:53:12,411 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 47 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 659 ImplicationChecksByTransitivity, 2247.7ms TimeCoverageRelationStatistics Valid=358, Invalid=2834, Unknown=0, NotChecked=0, Total=3192 [2021-06-05 05:53:12,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14255 states. [2021-06-05 05:53:12,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14255 to 12031. [2021-06-05 05:53:12,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12031 states, 12030 states have (on average 2.4587697423108894) internal successors, (29579), 12030 states have internal predecessors, (29579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:53:12,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12031 states to 12031 states and 29579 transitions. [2021-06-05 05:53:12,543 INFO L78 Accepts]: Start accepts. Automaton has 12031 states and 29579 transitions. Word has length 59 [2021-06-05 05:53:12,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:53:12,543 INFO L482 AbstractCegarLoop]: Abstraction has 12031 states and 29579 transitions. [2021-06-05 05:53:12,544 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 3.2413793103448274) internal successors, (94), 28 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:53:12,544 INFO L276 IsEmpty]: Start isEmpty. Operand 12031 states and 29579 transitions. [2021-06-05 05:53:12,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-06-05 05:53:12,551 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:53:12,551 INFO L521 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:53:12,751 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2021-06-05 05:53:12,752 INFO L430 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:53:12,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:53:12,752 INFO L82 PathProgramCache]: Analyzing trace with hash 1734215511, now seen corresponding path program 82 times [2021-06-05 05:53:12,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:53:12,752 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743298254] [2021-06-05 05:53:12,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:53:12,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:53:13,074 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:53:13,074 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:53:13,074 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743298254] [2021-06-05 05:53:13,074 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743298254] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:53:13,074 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46911406] [2021-06-05 05:53:13,074 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:53:13,111 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 05:53:13,111 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:53:13,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 58 conjunts are in the unsatisfiable core [2021-06-05 05:53:13,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:53:13,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:13,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:13,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:13,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:13,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:13,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:13,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:13,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:13,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:13,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:13,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:13,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:13,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:13,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:13,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:13,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:13,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:13,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:13,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:13,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:13,634 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:53:13,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:13,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:13,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:13,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:13,638 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 21 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 48 [2021-06-05 05:53:13,639 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:53:13,647 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:53:13,648 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:53:13,648 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:132, output treesize:7 [2021-06-05 05:53:13,661 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:53:13,662 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [46911406] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:53:13,662 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:53:13,662 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18] total 23 [2021-06-05 05:53:13,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376050806] [2021-06-05 05:53:13,662 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-06-05 05:53:13,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:53:13,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-06-05 05:53:13,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=479, Unknown=0, NotChecked=0, Total=552 [2021-06-05 05:53:13,663 INFO L87 Difference]: Start difference. First operand 12031 states and 29579 transitions. Second operand has 24 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 23 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:53:14,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:53:14,807 INFO L93 Difference]: Finished difference Result 18231 states and 45163 transitions. [2021-06-05 05:53:14,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-05 05:53:14,808 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 23 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-06-05 05:53:14,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:53:14,825 INFO L225 Difference]: With dead ends: 18231 [2021-06-05 05:53:14,825 INFO L226 Difference]: Without dead ends: 18143 [2021-06-05 05:53:14,825 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 47 SyntacticMatches, 7 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 1069.7ms TimeCoverageRelationStatistics Valid=205, Invalid=1687, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 05:53:14,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18143 states. [2021-06-05 05:53:14,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18143 to 11951. [2021-06-05 05:53:14,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11951 states, 11950 states have (on average 2.4584937238493723) internal successors, (29379), 11950 states have internal predecessors, (29379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:53:14,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11951 states to 11951 states and 29379 transitions. [2021-06-05 05:53:14,975 INFO L78 Accepts]: Start accepts. Automaton has 11951 states and 29379 transitions. Word has length 59 [2021-06-05 05:53:14,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:53:14,976 INFO L482 AbstractCegarLoop]: Abstraction has 11951 states and 29379 transitions. [2021-06-05 05:53:14,976 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 23 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:53:14,976 INFO L276 IsEmpty]: Start isEmpty. Operand 11951 states and 29379 transitions. [2021-06-05 05:53:14,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-06-05 05:53:14,983 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:53:14,983 INFO L521 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:53:15,183 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,86 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:53:15,183 INFO L430 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:53:15,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:53:15,183 INFO L82 PathProgramCache]: Analyzing trace with hash -335422633, now seen corresponding path program 83 times [2021-06-05 05:53:15,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:53:15,184 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133174232] [2021-06-05 05:53:15,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:53:15,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:53:15,448 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:53:15,448 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:53:15,449 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133174232] [2021-06-05 05:53:15,449 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133174232] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:53:15,449 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245811840] [2021-06-05 05:53:15,449 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:53:15,479 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-06-05 05:53:15,479 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:53:15,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 59 conjunts are in the unsatisfiable core [2021-06-05 05:53:15,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:53:16,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:16,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:16,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:16,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:16,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:16,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:16,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:16,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:16,098 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:53:16,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:16,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:16,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:16,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:16,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:16,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:16,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:16,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:16,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:16,104 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:53:16,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:16,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:16,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:16,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:16,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:16,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:16,109 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:53:16,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:16,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:16,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:16,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:16,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:16,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:16,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:16,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:16,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:16,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:16,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:16,116 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:53:16,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:16,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:16,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:16,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:16,120 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:53:16,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:16,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:16,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:16,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:16,123 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:53:16,123 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:53:16,124 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 14 select indices, 14 select index equivalence classes, 21 disjoint index pairs (out of 91 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 38 [2021-06-05 05:53:16,125 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:53:16,129 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:53:16,130 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:53:16,130 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:98, output treesize:3 [2021-06-05 05:53:16,152 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:53:16,153 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245811840] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:53:16,153 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:53:16,153 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18] total 32 [2021-06-05 05:53:16,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796037415] [2021-06-05 05:53:16,153 INFO L462 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-06-05 05:53:16,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:53:16,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-06-05 05:53:16,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=963, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 05:53:16,153 INFO L87 Difference]: Start difference. First operand 11951 states and 29379 transitions. Second operand has 33 states, 33 states have (on average 3.272727272727273) internal successors, (108), 32 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:53:19,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:53:19,776 INFO L93 Difference]: Finished difference Result 20051 states and 49314 transitions. [2021-06-05 05:53:19,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-06-05 05:53:19,776 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.272727272727273) internal successors, (108), 32 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-06-05 05:53:19,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:53:19,795 INFO L225 Difference]: With dead ends: 20051 [2021-06-05 05:53:19,795 INFO L226 Difference]: Without dead ends: 19783 [2021-06-05 05:53:19,796 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1218 ImplicationChecksByTransitivity, 2752.6ms TimeCoverageRelationStatistics Valid=460, Invalid=5392, Unknown=0, NotChecked=0, Total=5852 [2021-06-05 05:53:19,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19783 states. [2021-06-05 05:53:19,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19783 to 12207. [2021-06-05 05:53:19,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12207 states, 12206 states have (on average 2.459364247091594) internal successors, (30019), 12206 states have internal predecessors, (30019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:53:19,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12207 states to 12207 states and 30019 transitions. [2021-06-05 05:53:19,976 INFO L78 Accepts]: Start accepts. Automaton has 12207 states and 30019 transitions. Word has length 59 [2021-06-05 05:53:19,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:53:19,976 INFO L482 AbstractCegarLoop]: Abstraction has 12207 states and 30019 transitions. [2021-06-05 05:53:19,976 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 3.272727272727273) internal successors, (108), 32 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:53:19,976 INFO L276 IsEmpty]: Start isEmpty. Operand 12207 states and 30019 transitions. [2021-06-05 05:53:19,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-06-05 05:53:19,983 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:53:19,983 INFO L521 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:53:20,184 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2021-06-05 05:53:20,184 INFO L430 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:53:20,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:53:20,184 INFO L82 PathProgramCache]: Analyzing trace with hash 312192855, now seen corresponding path program 84 times [2021-06-05 05:53:20,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:53:20,184 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466367602] [2021-06-05 05:53:20,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:53:20,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:53:20,522 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:53:20,522 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:53:20,522 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466367602] [2021-06-05 05:53:20,523 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466367602] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:53:20,523 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533490044] [2021-06-05 05:53:20,523 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:53:20,553 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-06-05 05:53:20,553 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:53:20,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 58 conjunts are in the unsatisfiable core [2021-06-05 05:53:20,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:53:21,003 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:53:21,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:21,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:21,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:21,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:21,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:21,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:21,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:21,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:21,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:21,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:21,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:21,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:21,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:21,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:21,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:21,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:21,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:21,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:21,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:21,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:21,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:21,017 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 21 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 48 [2021-06-05 05:53:21,018 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:53:21,023 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:53:21,024 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:53:21,024 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:132, output treesize:7 [2021-06-05 05:53:21,034 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:53:21,034 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1533490044] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:53:21,034 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:53:21,034 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 25 [2021-06-05 05:53:21,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650338154] [2021-06-05 05:53:21,034 INFO L462 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-06-05 05:53:21,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:53:21,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-06-05 05:53:21,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=557, Unknown=0, NotChecked=0, Total=650 [2021-06-05 05:53:21,035 INFO L87 Difference]: Start difference. First operand 12207 states and 30019 transitions. Second operand has 26 states, 26 states have (on average 2.923076923076923) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:53:22,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:53:22,253 INFO L93 Difference]: Finished difference Result 18119 states and 44843 transitions. [2021-06-05 05:53:22,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 05:53:22,253 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.923076923076923) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-06-05 05:53:22,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:53:22,272 INFO L225 Difference]: With dead ends: 18119 [2021-06-05 05:53:22,272 INFO L226 Difference]: Without dead ends: 18031 [2021-06-05 05:53:22,272 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 45 SyntacticMatches, 7 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 1076.3ms TimeCoverageRelationStatistics Valid=252, Invalid=1910, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 05:53:22,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18031 states. [2021-06-05 05:53:22,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18031 to 12207. [2021-06-05 05:53:22,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12207 states, 12206 states have (on average 2.459364247091594) internal successors, (30019), 12206 states have internal predecessors, (30019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:53:22,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12207 states to 12207 states and 30019 transitions. [2021-06-05 05:53:22,461 INFO L78 Accepts]: Start accepts. Automaton has 12207 states and 30019 transitions. Word has length 59 [2021-06-05 05:53:22,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:53:22,461 INFO L482 AbstractCegarLoop]: Abstraction has 12207 states and 30019 transitions. [2021-06-05 05:53:22,461 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 2.923076923076923) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:53:22,462 INFO L276 IsEmpty]: Start isEmpty. Operand 12207 states and 30019 transitions. [2021-06-05 05:53:22,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-06-05 05:53:22,469 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:53:22,469 INFO L521 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:53:22,669 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,88 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:53:22,669 INFO L430 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:53:22,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:53:22,670 INFO L82 PathProgramCache]: Analyzing trace with hash 1110759767, now seen corresponding path program 85 times [2021-06-05 05:53:22,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:53:22,670 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101038278] [2021-06-05 05:53:22,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:53:22,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:53:22,971 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:53:22,972 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:53:22,972 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101038278] [2021-06-05 05:53:22,972 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101038278] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:53:22,972 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735585063] [2021-06-05 05:53:22,972 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:53:23,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:53:23,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 58 conjunts are in the unsatisfiable core [2021-06-05 05:53:23,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:53:23,348 INFO L354 Elim1Store]: treesize reduction 240, result has 0.4 percent of original size [2021-06-05 05:53:23,348 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 126 treesize of output 48 [2021-06-05 05:53:23,349 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:53:23,352 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:53:23,352 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:53:23,352 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:126, output treesize:7 [2021-06-05 05:53:23,362 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:53:23,362 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1735585063] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:53:23,362 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:53:23,362 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 24 [2021-06-05 05:53:23,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668098018] [2021-06-05 05:53:23,362 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 05:53:23,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:53:23,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 05:53:23,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=513, Unknown=0, NotChecked=0, Total=600 [2021-06-05 05:53:23,363 INFO L87 Difference]: Start difference. First operand 12207 states and 30019 transitions. Second operand has 25 states, 25 states have (on average 2.88) internal successors, (72), 24 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:53:24,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:53:24,418 INFO L93 Difference]: Finished difference Result 16227 states and 40031 transitions. [2021-06-05 05:53:24,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-05 05:53:24,419 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.88) internal successors, (72), 24 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-06-05 05:53:24,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:53:24,434 INFO L225 Difference]: With dead ends: 16227 [2021-06-05 05:53:24,434 INFO L226 Difference]: Without dead ends: 16191 [2021-06-05 05:53:24,434 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 45 SyntacticMatches, 8 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 402 ImplicationChecksByTransitivity, 941.3ms TimeCoverageRelationStatistics Valid=233, Invalid=1747, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 05:53:24,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16191 states. [2021-06-05 05:53:24,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16191 to 12239. [2021-06-05 05:53:24,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12239 states, 12238 states have (on average 2.4594705017159666) internal successors, (30099), 12238 states have internal predecessors, (30099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:53:24,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12239 states to 12239 states and 30099 transitions. [2021-06-05 05:53:24,605 INFO L78 Accepts]: Start accepts. Automaton has 12239 states and 30099 transitions. Word has length 59 [2021-06-05 05:53:24,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:53:24,605 INFO L482 AbstractCegarLoop]: Abstraction has 12239 states and 30099 transitions. [2021-06-05 05:53:24,605 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 2.88) internal successors, (72), 24 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:53:24,605 INFO L276 IsEmpty]: Start isEmpty. Operand 12239 states and 30099 transitions. [2021-06-05 05:53:24,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-06-05 05:53:24,613 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:53:24,613 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:53:24,816 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,89 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:53:24,817 INFO L430 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:53:24,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:53:24,817 INFO L82 PathProgramCache]: Analyzing trace with hash 69241945, now seen corresponding path program 86 times [2021-06-05 05:53:24,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:53:24,817 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637699490] [2021-06-05 05:53:24,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:53:24,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:53:24,866 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 64 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:53:24,866 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:53:24,866 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637699490] [2021-06-05 05:53:24,866 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637699490] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:53:24,866 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620987607] [2021-06-05 05:53:24,866 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:53:24,895 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 05:53:24,896 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:53:24,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 16 conjunts are in the unsatisfiable core [2021-06-05 05:53:24,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:53:24,971 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 64 proven. 78 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:53:24,971 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1620987607] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:53:24,971 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:53:24,971 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 10 [2021-06-05 05:53:24,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120184880] [2021-06-05 05:53:24,971 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 05:53:24,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:53:24,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 05:53:24,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-06-05 05:53:24,972 INFO L87 Difference]: Start difference. First operand 12239 states and 30099 transitions. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 10 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:53:25,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:53:25,032 INFO L93 Difference]: Finished difference Result 14079 states and 34539 transitions. [2021-06-05 05:53:25,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 05:53:25,033 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 10 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-06-05 05:53:25,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:53:25,045 INFO L225 Difference]: With dead ends: 14079 [2021-06-05 05:53:25,045 INFO L226 Difference]: Without dead ends: 14071 [2021-06-05 05:53:25,046 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 37.8ms TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-06-05 05:53:25,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14071 states. [2021-06-05 05:53:25,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14071 to 12495. [2021-06-05 05:53:25,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12495 states, 12494 states have (on average 2.4615815591483914) internal successors, (30755), 12494 states have internal predecessors, (30755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:53:25,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12495 states to 12495 states and 30755 transitions. [2021-06-05 05:53:25,178 INFO L78 Accepts]: Start accepts. Automaton has 12495 states and 30755 transitions. Word has length 61 [2021-06-05 05:53:25,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:53:25,178 INFO L482 AbstractCegarLoop]: Abstraction has 12495 states and 30755 transitions. [2021-06-05 05:53:25,178 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 10 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:53:25,178 INFO L276 IsEmpty]: Start isEmpty. Operand 12495 states and 30755 transitions. [2021-06-05 05:53:25,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-06-05 05:53:25,186 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:53:25,186 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:53:25,386 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,90 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:53:25,386 INFO L430 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:53:25,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:53:25,386 INFO L82 PathProgramCache]: Analyzing trace with hash -462180397, now seen corresponding path program 87 times [2021-06-05 05:53:25,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:53:25,387 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199319851] [2021-06-05 05:53:25,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:53:25,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:53:25,712 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 8 proven. 144 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:53:25,712 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:53:25,712 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199319851] [2021-06-05 05:53:25,712 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199319851] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:53:25,712 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757075627] [2021-06-05 05:53:25,713 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:53:25,754 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-06-05 05:53:25,754 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:53:25,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 58 conjunts are in the unsatisfiable core [2021-06-05 05:53:25,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:53:26,262 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:53:26,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:26,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:26,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:26,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:26,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:26,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:26,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:26,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:26,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:26,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:26,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:26,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:26,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:26,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:26,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:26,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:26,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:26,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:26,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:26,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:26,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:26,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:26,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:26,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:26,278 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:53:26,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:26,279 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 21 disjoint index pairs (out of 36 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 48 [2021-06-05 05:53:26,280 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:53:26,285 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:53:26,286 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:53:26,286 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:132, output treesize:7 [2021-06-05 05:53:26,296 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 8 proven. 144 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:53:26,296 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [757075627] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:53:26,296 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:53:26,296 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18] total 25 [2021-06-05 05:53:26,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019354345] [2021-06-05 05:53:26,296 INFO L462 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-06-05 05:53:26,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:53:26,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-06-05 05:53:26,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=560, Unknown=0, NotChecked=0, Total=650 [2021-06-05 05:53:26,297 INFO L87 Difference]: Start difference. First operand 12495 states and 30755 transitions. Second operand has 26 states, 26 states have (on average 3.3076923076923075) internal successors, (86), 25 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:53:28,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:53:28,624 INFO L93 Difference]: Finished difference Result 20747 states and 51611 transitions. [2021-06-05 05:53:28,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 05:53:28,624 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.3076923076923075) internal successors, (86), 25 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-06-05 05:53:28,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:53:28,643 INFO L225 Difference]: With dead ends: 20747 [2021-06-05 05:53:28,643 INFO L226 Difference]: Without dead ends: 20543 [2021-06-05 05:53:28,644 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 50 SyntacticMatches, 6 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1008 ImplicationChecksByTransitivity, 2109.1ms TimeCoverageRelationStatistics Valid=449, Invalid=3457, Unknown=0, NotChecked=0, Total=3906 [2021-06-05 05:53:28,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20543 states. [2021-06-05 05:53:28,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20543 to 12831. [2021-06-05 05:53:28,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12831 states, 12830 states have (on average 2.462587685113016) internal successors, (31595), 12830 states have internal predecessors, (31595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:53:28,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12831 states to 12831 states and 31595 transitions. [2021-06-05 05:53:28,813 INFO L78 Accepts]: Start accepts. Automaton has 12831 states and 31595 transitions. Word has length 63 [2021-06-05 05:53:28,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:53:28,813 INFO L482 AbstractCegarLoop]: Abstraction has 12831 states and 31595 transitions. [2021-06-05 05:53:28,813 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 3.3076923076923075) internal successors, (86), 25 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:53:28,813 INFO L276 IsEmpty]: Start isEmpty. Operand 12831 states and 31595 transitions. [2021-06-05 05:53:28,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-06-05 05:53:28,821 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:53:28,821 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:53:29,021 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,91 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:53:29,022 INFO L430 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:53:29,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:53:29,022 INFO L82 PathProgramCache]: Analyzing trace with hash -730260523, now seen corresponding path program 88 times [2021-06-05 05:53:29,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:53:29,022 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750423055] [2021-06-05 05:53:29,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:53:29,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:53:29,379 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 8 proven. 160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:53:29,379 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:53:29,379 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750423055] [2021-06-05 05:53:29,379 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750423055] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:53:29,379 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1429747051] [2021-06-05 05:53:29,379 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:53:29,409 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 05:53:29,409 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:53:29,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 66 conjunts are in the unsatisfiable core [2021-06-05 05:53:29,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:53:30,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:30,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:30,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:30,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:30,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:30,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:30,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:30,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:30,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:30,203 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:53:30,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:30,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:30,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:30,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:30,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:30,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:30,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:30,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:30,208 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:53:30,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:30,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:30,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:30,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:30,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:30,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:30,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:30,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:30,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:30,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:30,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:30,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:30,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:30,217 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:53:30,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:30,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:30,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:30,219 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:53:30,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:30,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:30,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:30,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:30,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:30,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:30,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:30,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:30,225 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:53:30,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:30,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:30,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:30,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:30,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:30,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:30,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:30,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:30,231 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:53:30,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:30,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:30,233 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:53:30,233 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 15 select indices, 15 select index equivalence classes, 28 disjoint index pairs (out of 105 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 145 treesize of output 55 [2021-06-05 05:53:30,234 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:53:30,239 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:53:30,240 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:53:30,240 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:151, output treesize:7 [2021-06-05 05:53:30,250 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 8 proven. 160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:53:30,250 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1429747051] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:53:30,250 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:53:30,250 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20] total 33 [2021-06-05 05:53:30,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759490314] [2021-06-05 05:53:30,251 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-06-05 05:53:30,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:53:30,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-06-05 05:53:30,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=997, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 05:53:30,251 INFO L87 Difference]: Start difference. First operand 12831 states and 31595 transitions. Second operand has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 33 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:53:32,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:53:32,174 INFO L93 Difference]: Finished difference Result 26167 states and 65219 transitions. [2021-06-05 05:53:32,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-05 05:53:32,174 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 33 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-06-05 05:53:32,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:53:32,201 INFO L225 Difference]: With dead ends: 26167 [2021-06-05 05:53:32,201 INFO L226 Difference]: Without dead ends: 25935 [2021-06-05 05:53:32,201 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 967 ImplicationChecksByTransitivity, 1507.5ms TimeCoverageRelationStatistics Valid=342, Invalid=3318, Unknown=0, NotChecked=0, Total=3660 [2021-06-05 05:53:32,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25935 states. [2021-06-05 05:53:32,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25935 to 12767. [2021-06-05 05:53:32,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12767 states, 12766 states have (on average 2.4630267899107) internal successors, (31443), 12766 states have internal predecessors, (31443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:53:32,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12767 states to 12767 states and 31443 transitions. [2021-06-05 05:53:32,391 INFO L78 Accepts]: Start accepts. Automaton has 12767 states and 31443 transitions. Word has length 65 [2021-06-05 05:53:32,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:53:32,391 INFO L482 AbstractCegarLoop]: Abstraction has 12767 states and 31443 transitions. [2021-06-05 05:53:32,391 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 33 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:53:32,391 INFO L276 IsEmpty]: Start isEmpty. Operand 12767 states and 31443 transitions. [2021-06-05 05:53:32,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-06-05 05:53:32,399 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:53:32,399 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:53:32,600 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable94 [2021-06-05 05:53:32,600 INFO L430 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:53:32,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:53:32,600 INFO L82 PathProgramCache]: Analyzing trace with hash 1063861717, now seen corresponding path program 89 times [2021-06-05 05:53:32,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:53:32,600 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486695652] [2021-06-05 05:53:32,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:53:32,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:53:32,923 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 8 proven. 160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:53:32,923 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:53:32,923 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486695652] [2021-06-05 05:53:32,923 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486695652] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:53:32,923 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [315863682] [2021-06-05 05:53:32,923 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:53:32,956 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-06-05 05:53:32,957 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:53:32,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 67 conjunts are in the unsatisfiable core [2021-06-05 05:53:32,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:53:33,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:33,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:33,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:33,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:33,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:33,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:33,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:33,896 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:53:33,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:33,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:33,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:33,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:33,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:33,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:33,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:33,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:33,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:33,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:33,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:33,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:33,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:33,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:33,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:33,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:33,907 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:53:33,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:33,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:33,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:33,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:33,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:33,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:33,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:33,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:33,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:33,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:33,914 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:53:33,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:33,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:33,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:33,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:33,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:33,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:33,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:33,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:33,919 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:53:33,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:33,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:33,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:33,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:33,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:33,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:33,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:33,924 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:53:33,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:33,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:33,926 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:53:33,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:33,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:33,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:33,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:33,929 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:53:33,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:33,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:33,931 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:53:33,931 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 16 select indices, 16 select index equivalence classes, 28 disjoint index pairs (out of 120 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 104 treesize of output 44 [2021-06-05 05:53:33,932 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:53:33,937 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:53:33,937 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:53:33,938 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:112, output treesize:3 [2021-06-05 05:53:33,962 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 8 proven. 160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:53:33,962 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [315863682] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:53:33,962 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:53:33,962 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20] total 36 [2021-06-05 05:53:33,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312501653] [2021-06-05 05:53:33,962 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-06-05 05:53:33,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:53:33,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-06-05 05:53:33,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1227, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 05:53:33,963 INFO L87 Difference]: Start difference. First operand 12767 states and 31443 transitions. Second operand has 37 states, 37 states have (on average 3.2432432432432434) internal successors, (120), 36 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:53:38,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:53:38,407 INFO L93 Difference]: Finished difference Result 24055 states and 59703 transitions. [2021-06-05 05:53:38,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 05:53:38,407 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.2432432432432434) internal successors, (120), 36 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-06-05 05:53:38,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:53:38,425 INFO L225 Difference]: With dead ends: 24055 [2021-06-05 05:53:38,425 INFO L226 Difference]: Without dead ends: 23455 [2021-06-05 05:53:38,426 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 922 ImplicationChecksByTransitivity, 2909.7ms TimeCoverageRelationStatistics Valid=429, Invalid=4541, Unknown=0, NotChecked=0, Total=4970 [2021-06-05 05:53:38,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23455 states. [2021-06-05 05:53:38,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23455 to 13455. [2021-06-05 05:53:38,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13455 states, 13454 states have (on average 2.4631336405529956) internal successors, (33139), 13454 states have internal predecessors, (33139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:53:38,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13455 states to 13455 states and 33139 transitions. [2021-06-05 05:53:38,596 INFO L78 Accepts]: Start accepts. Automaton has 13455 states and 33139 transitions. Word has length 65 [2021-06-05 05:53:38,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:53:38,596 INFO L482 AbstractCegarLoop]: Abstraction has 13455 states and 33139 transitions. [2021-06-05 05:53:38,596 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 3.2432432432432434) internal successors, (120), 36 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:53:38,596 INFO L276 IsEmpty]: Start isEmpty. Operand 13455 states and 33139 transitions. [2021-06-05 05:53:38,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-06-05 05:53:38,605 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:53:38,605 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:53:38,805 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,93 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:53:38,805 INFO L430 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:53:38,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:53:38,805 INFO L82 PathProgramCache]: Analyzing trace with hash 73711061, now seen corresponding path program 90 times [2021-06-05 05:53:38,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:53:38,806 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300587719] [2021-06-05 05:53:38,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:53:38,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:53:39,149 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 8 proven. 160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:53:39,149 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:53:39,149 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300587719] [2021-06-05 05:53:39,149 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300587719] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:53:39,149 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156177618] [2021-06-05 05:53:39,149 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:53:39,180 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-06-05 05:53:39,181 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:53:39,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 66 conjunts are in the unsatisfiable core [2021-06-05 05:53:39,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:53:39,918 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:53:39,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:39,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:39,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:39,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:39,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:39,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:39,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:39,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:39,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:39,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:39,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:39,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:39,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:39,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:39,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:39,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:39,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:39,930 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:53:39,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:39,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:39,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:39,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:39,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:39,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:39,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:39,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:39,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:39,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:39,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:39,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:39,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:39,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:39,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:39,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:39,941 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:53:39,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:39,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:39,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:39,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:39,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:39,945 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:53:39,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:39,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:39,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:39,947 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:53:39,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:39,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:39,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:39,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:39,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:39,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:39,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:39,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:39,953 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:53:39,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:39,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:39,954 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:53:39,955 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 15 select indices, 15 select index equivalence classes, 28 disjoint index pairs (out of 105 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 145 treesize of output 55 [2021-06-05 05:53:39,956 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:53:39,961 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:53:39,962 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:53:39,962 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:151, output treesize:7 [2021-06-05 05:53:39,972 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 8 proven. 160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:53:39,972 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [156177618] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:53:39,972 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:53:39,972 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 34 [2021-06-05 05:53:39,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585485321] [2021-06-05 05:53:39,972 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-06-05 05:53:39,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:53:39,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-06-05 05:53:39,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=1060, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 05:53:39,973 INFO L87 Difference]: Start difference. First operand 13455 states and 33139 transitions. Second operand has 35 states, 35 states have (on average 3.085714285714286) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:53:41,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:53:41,833 INFO L93 Difference]: Finished difference Result 24487 states and 61059 transitions. [2021-06-05 05:53:41,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-05 05:53:41,834 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.085714285714286) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-06-05 05:53:41,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:53:41,857 INFO L225 Difference]: With dead ends: 24487 [2021-06-05 05:53:41,857 INFO L226 Difference]: Without dead ends: 24255 [2021-06-05 05:53:41,857 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 980 ImplicationChecksByTransitivity, 1514.4ms TimeCoverageRelationStatistics Valid=348, Invalid=3434, Unknown=0, NotChecked=0, Total=3782 [2021-06-05 05:53:41,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24255 states. [2021-06-05 05:53:42,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24255 to 11647. [2021-06-05 05:53:42,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11647 states, 11646 states have (on average 2.460844925296239) internal successors, (28659), 11646 states have internal predecessors, (28659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:53:42,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11647 states to 11647 states and 28659 transitions. [2021-06-05 05:53:42,042 INFO L78 Accepts]: Start accepts. Automaton has 11647 states and 28659 transitions. Word has length 65 [2021-06-05 05:53:42,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:53:42,042 INFO L482 AbstractCegarLoop]: Abstraction has 11647 states and 28659 transitions. [2021-06-05 05:53:42,042 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 3.085714285714286) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:53:42,042 INFO L276 IsEmpty]: Start isEmpty. Operand 11647 states and 28659 transitions. [2021-06-05 05:53:42,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-06-05 05:53:42,051 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:53:42,051 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:53:42,251 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable96 [2021-06-05 05:53:42,251 INFO L430 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:53:42,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:53:42,251 INFO L82 PathProgramCache]: Analyzing trace with hash 1867833301, now seen corresponding path program 91 times [2021-06-05 05:53:42,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:53:42,252 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152166693] [2021-06-05 05:53:42,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:53:42,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:53:42,586 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 8 proven. 160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:53:42,586 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:53:42,586 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152166693] [2021-06-05 05:53:42,586 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152166693] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:53:42,587 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670601078] [2021-06-05 05:53:42,587 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:53:42,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:53:42,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 66 conjunts are in the unsatisfiable core [2021-06-05 05:53:42,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:53:43,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:43,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:43,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:43,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:43,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:43,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:43,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:43,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:43,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:43,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:43,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:43,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:43,377 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:53:43,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:43,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:43,379 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:53:43,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:43,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:43,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:43,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:43,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:43,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:43,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:43,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:43,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:43,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:43,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:43,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:43,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:43,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:43,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:43,389 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:53:43,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:43,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:43,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:43,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:43,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:43,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:43,394 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:53:43,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:43,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:43,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:43,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:43,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:43,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:43,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:43,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:43,400 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:53:43,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:43,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:43,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:43,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:43,403 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:53:43,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:43,404 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:53:43,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:43,406 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 15 select indices, 15 select index equivalence classes, 28 disjoint index pairs (out of 105 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 145 treesize of output 55 [2021-06-05 05:53:43,407 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:53:43,415 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:53:43,416 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:53:43,416 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:151, output treesize:7 [2021-06-05 05:53:43,430 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 8 proven. 160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:53:43,430 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [670601078] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:53:43,430 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:53:43,430 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 34 [2021-06-05 05:53:43,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586313782] [2021-06-05 05:53:43,430 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-06-05 05:53:43,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:53:43,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-06-05 05:53:43,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1058, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 05:53:43,431 INFO L87 Difference]: Start difference. First operand 11647 states and 28659 transitions. Second operand has 35 states, 35 states have (on average 3.085714285714286) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:53:45,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:53:45,218 INFO L93 Difference]: Finished difference Result 20823 states and 51611 transitions. [2021-06-05 05:53:45,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-05 05:53:45,218 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.085714285714286) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-06-05 05:53:45,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:53:45,237 INFO L225 Difference]: With dead ends: 20823 [2021-06-05 05:53:45,237 INFO L226 Difference]: Without dead ends: 20783 [2021-06-05 05:53:45,238 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 975 ImplicationChecksByTransitivity, 1527.7ms TimeCoverageRelationStatistics Valid=354, Invalid=3428, Unknown=0, NotChecked=0, Total=3782 [2021-06-05 05:53:45,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20783 states. [2021-06-05 05:53:45,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20783 to 11631. [2021-06-05 05:53:45,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11631 states, 11630 states have (on average 2.4607910576096304) internal successors, (28619), 11630 states have internal predecessors, (28619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:53:45,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11631 states to 11631 states and 28619 transitions. [2021-06-05 05:53:45,396 INFO L78 Accepts]: Start accepts. Automaton has 11631 states and 28619 transitions. Word has length 65 [2021-06-05 05:53:45,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:53:45,396 INFO L482 AbstractCegarLoop]: Abstraction has 11631 states and 28619 transitions. [2021-06-05 05:53:45,396 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 3.085714285714286) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:53:45,396 INFO L276 IsEmpty]: Start isEmpty. Operand 11631 states and 28619 transitions. [2021-06-05 05:53:45,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-06-05 05:53:45,403 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:53:45,403 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:53:45,604 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,95 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:53:45,604 INFO L430 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:53:45,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:53:45,604 INFO L82 PathProgramCache]: Analyzing trace with hash -2139158059, now seen corresponding path program 92 times [2021-06-05 05:53:45,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:53:45,604 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15020384] [2021-06-05 05:53:45,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:53:45,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:53:45,949 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 8 proven. 160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:53:45,950 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:53:45,950 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15020384] [2021-06-05 05:53:45,950 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15020384] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:53:45,950 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487361264] [2021-06-05 05:53:45,950 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:53:45,979 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 05:53:45,979 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:53:45,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 66 conjunts are in the unsatisfiable core [2021-06-05 05:53:45,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:53:46,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:46,737 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:53:46,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:46,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:46,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:46,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:46,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:46,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:46,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:46,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:46,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:46,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:46,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:46,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:46,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:46,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:46,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:46,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:46,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:46,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:46,749 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:53:46,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:46,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:46,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:46,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:46,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:46,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:46,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:46,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:46,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:46,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:46,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:46,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:46,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:46,758 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:53:46,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:46,759 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:53:46,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:46,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:46,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:46,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:46,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:46,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:46,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:46,764 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:53:46,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:46,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:46,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:46,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:46,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:46,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:46,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:46,769 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:53:46,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:46,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:46,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:46,771 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:53:46,772 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 15 select indices, 15 select index equivalence classes, 28 disjoint index pairs (out of 105 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 145 treesize of output 55 [2021-06-05 05:53:46,773 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:53:46,778 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:53:46,779 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:53:46,779 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:151, output treesize:7 [2021-06-05 05:53:46,789 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 8 proven. 160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:53:46,789 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487361264] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:53:46,789 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:53:46,789 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 34 [2021-06-05 05:53:46,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111214590] [2021-06-05 05:53:46,789 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-06-05 05:53:46,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:53:46,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-06-05 05:53:46,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1058, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 05:53:46,790 INFO L87 Difference]: Start difference. First operand 11631 states and 28619 transitions. Second operand has 35 states, 35 states have (on average 3.085714285714286) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:53:48,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:53:48,134 INFO L93 Difference]: Finished difference Result 20559 states and 50855 transitions. [2021-06-05 05:53:48,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 05:53:48,135 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.085714285714286) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-06-05 05:53:48,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:53:48,158 INFO L225 Difference]: With dead ends: 20559 [2021-06-05 05:53:48,159 INFO L226 Difference]: Without dead ends: 20495 [2021-06-05 05:53:48,159 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 776 ImplicationChecksByTransitivity, 1426.2ms TimeCoverageRelationStatistics Valid=303, Invalid=2889, Unknown=0, NotChecked=0, Total=3192 [2021-06-05 05:53:48,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20495 states. [2021-06-05 05:53:48,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20495 to 12623. [2021-06-05 05:53:48,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12623 states, 12622 states have (on average 2.456266835683727) internal successors, (31003), 12622 states have internal predecessors, (31003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:53:48,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12623 states to 12623 states and 31003 transitions. [2021-06-05 05:53:48,331 INFO L78 Accepts]: Start accepts. Automaton has 12623 states and 31003 transitions. Word has length 65 [2021-06-05 05:53:48,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:53:48,331 INFO L482 AbstractCegarLoop]: Abstraction has 12623 states and 31003 transitions. [2021-06-05 05:53:48,331 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 3.085714285714286) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:53:48,331 INFO L276 IsEmpty]: Start isEmpty. Operand 12623 states and 31003 transitions. [2021-06-05 05:53:48,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-06-05 05:53:48,339 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:53:48,339 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:53:48,539 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98,96 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:53:48,539 INFO L430 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:53:48,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:53:48,540 INFO L82 PathProgramCache]: Analyzing trace with hash 49742293, now seen corresponding path program 93 times [2021-06-05 05:53:48,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:53:48,540 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917669344] [2021-06-05 05:53:48,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:53:48,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:53:48,870 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 8 proven. 155 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-06-05 05:53:48,870 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:53:48,870 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917669344] [2021-06-05 05:53:48,870 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917669344] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:53:48,870 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661140740] [2021-06-05 05:53:48,870 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:53:48,912 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-06-05 05:53:48,912 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:53:48,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 68 conjunts are in the unsatisfiable core [2021-06-05 05:53:48,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:53:49,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:49,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:49,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:49,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:49,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:49,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:49,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:49,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:49,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:49,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:49,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:49,660 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:53:49,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:49,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:49,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:49,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:49,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:49,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:49,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:49,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:49,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:49,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:49,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:49,668 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:53:49,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:49,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:49,670 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:53:49,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:49,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:49,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:49,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:49,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:49,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:49,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:49,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:49,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:49,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:49,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:49,677 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:53:49,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:49,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:49,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:49,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:49,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:49,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:49,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:49,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:49,683 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:53:49,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:49,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:49,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:49,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:49,686 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:53:49,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:49,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:49,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:49,689 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:53:49,689 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 15 select indices, 15 select index equivalence classes, 28 disjoint index pairs (out of 105 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 145 treesize of output 55 [2021-06-05 05:53:49,691 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:53:49,696 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:53:49,697 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:53:49,697 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:151, output treesize:7 [2021-06-05 05:53:49,708 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 13 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:53:49,708 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661140740] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:53:49,708 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:53:49,708 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 20] total 30 [2021-06-05 05:53:49,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441268721] [2021-06-05 05:53:49,709 INFO L462 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-06-05 05:53:49,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:53:49,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-06-05 05:53:49,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=829, Unknown=0, NotChecked=0, Total=930 [2021-06-05 05:53:49,709 INFO L87 Difference]: Start difference. First operand 12623 states and 31003 transitions. Second operand has 31 states, 31 states have (on average 3.3548387096774195) internal successors, (104), 30 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:53:51,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:53:51,051 INFO L93 Difference]: Finished difference Result 16735 states and 41197 transitions. [2021-06-05 05:53:51,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 05:53:51,051 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.3548387096774195) internal successors, (104), 30 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-06-05 05:53:51,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:53:51,066 INFO L225 Difference]: With dead ends: 16735 [2021-06-05 05:53:51,067 INFO L226 Difference]: Without dead ends: 16383 [2021-06-05 05:53:51,067 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 52 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 675 ImplicationChecksByTransitivity, 1390.9ms TimeCoverageRelationStatistics Valid=248, Invalid=2404, Unknown=0, NotChecked=0, Total=2652 [2021-06-05 05:53:51,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16383 states. [2021-06-05 05:53:51,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16383 to 13615. [2021-06-05 05:53:51,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13615 states, 13614 states have (on average 2.457102982224181) internal successors, (33451), 13614 states have internal predecessors, (33451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:53:51,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13615 states to 13615 states and 33451 transitions. [2021-06-05 05:53:51,228 INFO L78 Accepts]: Start accepts. Automaton has 13615 states and 33451 transitions. Word has length 65 [2021-06-05 05:53:51,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:53:51,228 INFO L482 AbstractCegarLoop]: Abstraction has 13615 states and 33451 transitions. [2021-06-05 05:53:51,228 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 3.3548387096774195) internal successors, (104), 30 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:53:51,228 INFO L276 IsEmpty]: Start isEmpty. Operand 13615 states and 33451 transitions. [2021-06-05 05:53:51,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-06-05 05:53:51,237 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:53:51,237 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:53:51,437 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable99 [2021-06-05 05:53:51,437 INFO L430 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:53:51,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:53:51,438 INFO L82 PathProgramCache]: Analyzing trace with hash -1456921643, now seen corresponding path program 94 times [2021-06-05 05:53:51,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:53:51,438 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523246187] [2021-06-05 05:53:51,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:53:51,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:53:51,761 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 8 proven. 160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:53:51,761 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:53:51,761 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523246187] [2021-06-05 05:53:51,762 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523246187] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:53:51,762 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387600476] [2021-06-05 05:53:51,762 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:53:51,861 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 05:53:51,861 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:53:51,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 66 conjunts are in the unsatisfiable core [2021-06-05 05:53:51,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:53:52,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:52,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:52,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:52,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:52,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:52,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:52,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:52,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:52,628 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:53:52,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:52,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:52,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:52,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:52,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:52,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:52,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:52,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:52,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:52,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:52,635 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:53:52,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:52,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:52,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:52,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:52,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:52,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:52,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:52,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:52,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:52,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:52,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:52,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:52,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:52,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:52,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:52,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:52,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:52,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:52,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:52,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:52,648 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:53:52,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:52,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:52,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:52,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:52,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:52,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:52,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:52,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:52,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:52,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:52,655 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:53:52,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:52,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:52,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:52,657 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:53:52,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:52,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:52,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:52,660 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:53:52,660 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:53:52,661 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 15 select indices, 15 select index equivalence classes, 28 disjoint index pairs (out of 105 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 145 treesize of output 55 [2021-06-05 05:53:52,662 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:53:52,667 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:53:52,668 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:53:52,668 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:151, output treesize:7 [2021-06-05 05:53:52,679 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 8 proven. 160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:53:52,679 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [387600476] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:53:52,679 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:53:52,679 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 20] total 31 [2021-06-05 05:53:52,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014039424] [2021-06-05 05:53:52,679 INFO L462 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-06-05 05:53:52,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:53:52,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-06-05 05:53:52,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=883, Unknown=0, NotChecked=0, Total=992 [2021-06-05 05:53:52,680 INFO L87 Difference]: Start difference. First operand 13615 states and 33451 transitions. Second operand has 32 states, 32 states have (on average 3.375) internal successors, (108), 31 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:53:53,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:53:53,931 INFO L93 Difference]: Finished difference Result 20887 states and 51699 transitions. [2021-06-05 05:53:53,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 05:53:53,931 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.375) internal successors, (108), 31 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-06-05 05:53:53,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:53:53,951 INFO L225 Difference]: With dead ends: 20887 [2021-06-05 05:53:53,951 INFO L226 Difference]: Without dead ends: 20799 [2021-06-05 05:53:53,951 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 52 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 729 ImplicationChecksByTransitivity, 1403.6ms TimeCoverageRelationStatistics Valid=271, Invalid=2591, Unknown=0, NotChecked=0, Total=2862 [2021-06-05 05:53:53,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20799 states. [2021-06-05 05:53:54,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20799 to 13471. [2021-06-05 05:53:54,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13471 states, 13470 states have (on average 2.4566443949517445) internal successors, (33091), 13470 states have internal predecessors, (33091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:53:54,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13471 states to 13471 states and 33091 transitions. [2021-06-05 05:53:54,128 INFO L78 Accepts]: Start accepts. Automaton has 13471 states and 33091 transitions. Word has length 65 [2021-06-05 05:53:54,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:53:54,129 INFO L482 AbstractCegarLoop]: Abstraction has 13471 states and 33091 transitions. [2021-06-05 05:53:54,129 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 3.375) internal successors, (108), 31 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:53:54,129 INFO L276 IsEmpty]: Start isEmpty. Operand 13471 states and 33091 transitions. [2021-06-05 05:53:54,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-06-05 05:53:54,137 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:53:54,137 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:53:54,340 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 98 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2021-06-05 05:53:54,341 INFO L430 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:53:54,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:53:54,341 INFO L82 PathProgramCache]: Analyzing trace with hash 1596763093, now seen corresponding path program 95 times [2021-06-05 05:53:54,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:53:54,341 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058930577] [2021-06-05 05:53:54,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:53:54,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:53:54,704 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 8 proven. 160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:53:54,704 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:53:54,704 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058930577] [2021-06-05 05:53:54,704 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058930577] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:53:54,704 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085137565] [2021-06-05 05:53:54,704 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:53:54,738 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-06-05 05:53:54,738 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:53:54,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 66 conjunts are in the unsatisfiable core [2021-06-05 05:53:54,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:53:55,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:55,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:55,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:55,471 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:53:55,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:55,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:55,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:55,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:55,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:55,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:55,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:55,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:55,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:55,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:55,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:55,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:55,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:55,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:55,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:55,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:55,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:55,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:55,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:55,484 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:53:55,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:55,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:55,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:55,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:55,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:55,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:55,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:55,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:55,490 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:53:55,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:55,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:55,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:55,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:55,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:55,494 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:53:55,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:55,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:55,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:55,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:55,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:55,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:55,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:55,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:55,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:55,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:55,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:55,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:55,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:55,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:55,503 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:53:55,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:55,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:55,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:55,505 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:53:55,506 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:53:55,506 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 15 select indices, 15 select index equivalence classes, 28 disjoint index pairs (out of 105 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 145 treesize of output 55 [2021-06-05 05:53:55,508 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:53:55,513 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:53:55,514 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:53:55,514 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:151, output treesize:7 [2021-06-05 05:53:55,523 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 8 proven. 160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:53:55,524 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1085137565] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:53:55,524 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:53:55,524 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 34 [2021-06-05 05:53:55,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437293443] [2021-06-05 05:53:55,524 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-06-05 05:53:55,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:53:55,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-06-05 05:53:55,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=1056, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 05:53:55,525 INFO L87 Difference]: Start difference. First operand 13471 states and 33091 transitions. Second operand has 35 states, 35 states have (on average 3.085714285714286) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:53:57,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:53:57,302 INFO L93 Difference]: Finished difference Result 22039 states and 54763 transitions. [2021-06-05 05:53:57,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 05:53:57,303 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.085714285714286) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-06-05 05:53:57,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:53:57,324 INFO L225 Difference]: With dead ends: 22039 [2021-06-05 05:53:57,324 INFO L226 Difference]: Without dead ends: 21855 [2021-06-05 05:53:57,324 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 794 ImplicationChecksByTransitivity, 1408.8ms TimeCoverageRelationStatistics Valid=307, Invalid=2885, Unknown=0, NotChecked=0, Total=3192 [2021-06-05 05:53:57,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21855 states. [2021-06-05 05:53:57,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21855 to 13535. [2021-06-05 05:53:57,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13535 states, 13534 states have (on average 2.456849416284912) internal successors, (33251), 13534 states have internal predecessors, (33251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:53:57,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13535 states to 13535 states and 33251 transitions. [2021-06-05 05:53:57,520 INFO L78 Accepts]: Start accepts. Automaton has 13535 states and 33251 transitions. Word has length 65 [2021-06-05 05:53:57,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:53:57,520 INFO L482 AbstractCegarLoop]: Abstraction has 13535 states and 33251 transitions. [2021-06-05 05:53:57,520 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 3.085714285714286) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:53:57,520 INFO L276 IsEmpty]: Start isEmpty. Operand 13535 states and 33251 transitions. [2021-06-05 05:53:57,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-06-05 05:53:57,529 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:53:57,529 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:53:57,730 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101,99 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:53:57,730 INFO L430 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:53:57,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:53:57,730 INFO L82 PathProgramCache]: Analyzing trace with hash 233515989, now seen corresponding path program 96 times [2021-06-05 05:53:57,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:53:57,730 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589075] [2021-06-05 05:53:57,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:53:57,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:53:58,043 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 8 proven. 155 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-06-05 05:53:58,043 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:53:58,043 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589075] [2021-06-05 05:53:58,043 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589075] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:53:58,043 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090449258] [2021-06-05 05:53:58,043 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:53:58,077 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-06-05 05:53:58,077 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:53:58,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 68 conjunts are in the unsatisfiable core [2021-06-05 05:53:58,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:53:58,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:58,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:58,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:58,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:58,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:58,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:58,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:58,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:58,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:58,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:58,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:58,779 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:53:58,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:58,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:58,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:58,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:58,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:58,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:58,783 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:53:58,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:58,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:58,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:58,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:58,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:58,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:58,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:58,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:58,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:58,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:58,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:58,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:58,791 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:53:58,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:58,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:58,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:58,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:58,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:58,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:58,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:58,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:58,797 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:53:58,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:58,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:58,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:58,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:58,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:58,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:58,801 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:53:58,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:58,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:58,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:58,804 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:53:58,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:58,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:58,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:53:58,806 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:53:58,807 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 15 select indices, 15 select index equivalence classes, 28 disjoint index pairs (out of 105 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 145 treesize of output 55 [2021-06-05 05:53:58,808 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:53:58,813 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:53:58,814 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:53:58,814 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:151, output treesize:7 [2021-06-05 05:53:58,824 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 13 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:53:58,824 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2090449258] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:53:58,824 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:53:58,824 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 20] total 30 [2021-06-05 05:53:58,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717049658] [2021-06-05 05:53:58,824 INFO L462 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-06-05 05:53:58,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:53:58,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-06-05 05:53:58,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=829, Unknown=0, NotChecked=0, Total=930 [2021-06-05 05:53:58,825 INFO L87 Difference]: Start difference. First operand 13535 states and 33251 transitions. Second operand has 31 states, 31 states have (on average 3.3548387096774195) internal successors, (104), 30 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:54:00,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:54:00,041 INFO L93 Difference]: Finished difference Result 16767 states and 41237 transitions. [2021-06-05 05:54:00,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-05 05:54:00,041 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.3548387096774195) internal successors, (104), 30 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-06-05 05:54:00,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:54:00,055 INFO L225 Difference]: With dead ends: 16767 [2021-06-05 05:54:00,055 INFO L226 Difference]: Without dead ends: 16447 [2021-06-05 05:54:00,055 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 52 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 611 ImplicationChecksByTransitivity, 1303.1ms TimeCoverageRelationStatistics Valid=234, Invalid=2216, Unknown=0, NotChecked=0, Total=2450 [2021-06-05 05:54:00,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16447 states. [2021-06-05 05:54:00,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16447 to 14319. [2021-06-05 05:54:00,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14319 states, 14318 states have (on average 2.456418494203101) internal successors, (35171), 14318 states have internal predecessors, (35171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:54:00,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14319 states to 14319 states and 35171 transitions. [2021-06-05 05:54:00,206 INFO L78 Accepts]: Start accepts. Automaton has 14319 states and 35171 transitions. Word has length 65 [2021-06-05 05:54:00,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:54:00,206 INFO L482 AbstractCegarLoop]: Abstraction has 14319 states and 35171 transitions. [2021-06-05 05:54:00,206 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 3.3548387096774195) internal successors, (104), 30 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:54:00,206 INFO L276 IsEmpty]: Start isEmpty. Operand 14319 states and 35171 transitions. [2021-06-05 05:54:00,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-06-05 05:54:00,217 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:54:00,218 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:54:00,418 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2021-06-05 05:54:00,418 INFO L430 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:54:00,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:54:00,418 INFO L82 PathProgramCache]: Analyzing trace with hash -1273147947, now seen corresponding path program 97 times [2021-06-05 05:54:00,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:54:00,418 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094098715] [2021-06-05 05:54:00,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:54:00,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:54:00,688 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 8 proven. 160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:54:00,689 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:54:00,689 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094098715] [2021-06-05 05:54:00,689 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094098715] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:54:00,689 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1623696781] [2021-06-05 05:54:00,689 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:54:00,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:54:00,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 66 conjunts are in the unsatisfiable core [2021-06-05 05:54:00,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:54:01,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:01,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:01,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:01,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:01,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:01,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:01,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:01,415 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:01,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:01,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:01,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:01,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:01,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:01,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:01,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:01,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:01,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:01,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:01,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:01,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:01,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:01,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:01,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:01,428 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:01,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:01,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:01,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:01,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:01,432 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:01,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:01,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:01,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:01,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:01,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:01,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:01,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:01,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:01,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:01,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:01,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:01,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:01,443 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:01,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:01,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:01,445 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:01,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:01,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:01,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:01,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:01,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:01,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:01,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:01,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:01,453 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:01,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:01,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:01,455 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:01,456 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 15 select indices, 15 select index equivalence classes, 28 disjoint index pairs (out of 105 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 145 treesize of output 55 [2021-06-05 05:54:01,457 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:54:01,463 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:54:01,464 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:54:01,464 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:151, output treesize:7 [2021-06-05 05:54:01,476 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 8 proven. 160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:54:01,476 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1623696781] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:54:01,476 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:54:01,476 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 20] total 31 [2021-06-05 05:54:01,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71708850] [2021-06-05 05:54:01,476 INFO L462 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-06-05 05:54:01,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:54:01,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-06-05 05:54:01,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=885, Unknown=0, NotChecked=0, Total=992 [2021-06-05 05:54:01,477 INFO L87 Difference]: Start difference. First operand 14319 states and 35171 transitions. Second operand has 32 states, 32 states have (on average 3.375) internal successors, (108), 31 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:54:02,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:54:02,933 INFO L93 Difference]: Finished difference Result 21095 states and 52219 transitions. [2021-06-05 05:54:02,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-05 05:54:02,933 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.375) internal successors, (108), 31 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-06-05 05:54:02,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:54:03,006 INFO L225 Difference]: With dead ends: 21095 [2021-06-05 05:54:03,006 INFO L226 Difference]: Without dead ends: 21007 [2021-06-05 05:54:03,006 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 52 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 663 ImplicationChecksByTransitivity, 1285.4ms TimeCoverageRelationStatistics Valid=249, Invalid=2403, Unknown=0, NotChecked=0, Total=2652 [2021-06-05 05:54:03,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21007 states. [2021-06-05 05:54:03,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21007 to 14239. [2021-06-05 05:54:03,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14239 states, 14238 states have (on average 2.4561736198904343) internal successors, (34971), 14238 states have internal predecessors, (34971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:54:03,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14239 states to 14239 states and 34971 transitions. [2021-06-05 05:54:03,167 INFO L78 Accepts]: Start accepts. Automaton has 14239 states and 34971 transitions. Word has length 65 [2021-06-05 05:54:03,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:54:03,168 INFO L482 AbstractCegarLoop]: Abstraction has 14239 states and 34971 transitions. [2021-06-05 05:54:03,168 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 3.375) internal successors, (108), 31 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:54:03,168 INFO L276 IsEmpty]: Start isEmpty. Operand 14239 states and 34971 transitions. [2021-06-05 05:54:03,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-06-05 05:54:03,177 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:54:03,177 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:54:03,380 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2021-06-05 05:54:03,381 INFO L430 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:54:03,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:54:03,381 INFO L82 PathProgramCache]: Analyzing trace with hash -1298132523, now seen corresponding path program 98 times [2021-06-05 05:54:03,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:54:03,381 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580617542] [2021-06-05 05:54:03,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:54:03,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:54:03,716 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 8 proven. 160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:54:03,716 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:54:03,716 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580617542] [2021-06-05 05:54:03,716 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580617542] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:54:03,716 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938860343] [2021-06-05 05:54:03,716 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:54:03,748 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 05:54:03,748 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:54:03,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 66 conjunts are in the unsatisfiable core [2021-06-05 05:54:03,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:54:04,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:04,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:04,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:04,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:04,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:04,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:04,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:04,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:04,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:04,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:04,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:04,484 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:04,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:04,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:04,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:04,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:04,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:04,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:04,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:04,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:04,490 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:04,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:04,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:04,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:04,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:04,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:04,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:04,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:04,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:04,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:04,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:04,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:04,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:04,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:04,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:04,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:04,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:04,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:04,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:04,502 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:04,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:04,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:04,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:04,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:04,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:04,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:04,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:04,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:04,508 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:04,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:04,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:04,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:04,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:04,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:04,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:04,512 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:04,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:04,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:04,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:04,515 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:04,515 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:04,516 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 15 select indices, 15 select index equivalence classes, 28 disjoint index pairs (out of 105 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 145 treesize of output 55 [2021-06-05 05:54:04,517 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:54:04,522 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:54:04,523 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:54:04,523 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:151, output treesize:7 [2021-06-05 05:54:04,533 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 8 proven. 160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:54:04,533 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1938860343] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:54:04,533 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:54:04,533 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20] total 33 [2021-06-05 05:54:04,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362642743] [2021-06-05 05:54:04,533 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-06-05 05:54:04,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:54:04,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-06-05 05:54:04,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=997, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 05:54:04,534 INFO L87 Difference]: Start difference. First operand 14239 states and 34971 transitions. Second operand has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 33 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:54:05,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:54:05,579 INFO L93 Difference]: Finished difference Result 24103 states and 59715 transitions. [2021-06-05 05:54:05,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 05:54:05,580 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 33 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-06-05 05:54:05,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:54:05,603 INFO L225 Difference]: With dead ends: 24103 [2021-06-05 05:54:05,603 INFO L226 Difference]: Without dead ends: 24015 [2021-06-05 05:54:05,604 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 769 ImplicationChecksByTransitivity, 1391.3ms TimeCoverageRelationStatistics Valid=294, Invalid=2786, Unknown=0, NotChecked=0, Total=3080 [2021-06-05 05:54:05,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24015 states. [2021-06-05 05:54:05,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24015 to 14063. [2021-06-05 05:54:05,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14063 states, 14062 states have (on average 2.4556250888920497) internal successors, (34531), 14062 states have internal predecessors, (34531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:54:05,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14063 states to 14063 states and 34531 transitions. [2021-06-05 05:54:05,845 INFO L78 Accepts]: Start accepts. Automaton has 14063 states and 34531 transitions. Word has length 65 [2021-06-05 05:54:05,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:54:05,845 INFO L482 AbstractCegarLoop]: Abstraction has 14063 states and 34531 transitions. [2021-06-05 05:54:05,845 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 33 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:54:05,845 INFO L276 IsEmpty]: Start isEmpty. Operand 14063 states and 34531 transitions. [2021-06-05 05:54:05,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-06-05 05:54:05,854 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:54:05,854 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:54:06,056 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable104 [2021-06-05 05:54:06,057 INFO L430 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:54:06,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:54:06,057 INFO L82 PathProgramCache]: Analyzing trace with hash 1780536789, now seen corresponding path program 99 times [2021-06-05 05:54:06,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:54:06,057 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352462204] [2021-06-05 05:54:06,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:54:06,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:54:06,399 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 8 proven. 160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:54:06,399 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:54:06,399 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352462204] [2021-06-05 05:54:06,399 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352462204] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:54:06,399 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869999296] [2021-06-05 05:54:06,399 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:54:06,437 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-06-05 05:54:06,437 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:54:06,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 66 conjunts are in the unsatisfiable core [2021-06-05 05:54:06,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:54:07,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:07,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:07,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:07,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:07,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:07,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:07,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:07,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:07,210 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:07,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:07,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:07,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:07,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:07,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:07,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:07,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:07,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:07,216 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:07,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:07,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:07,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:07,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:07,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:07,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:07,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:07,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:07,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:07,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:07,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:07,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:07,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:07,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:07,225 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:07,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:07,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:07,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:07,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:07,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:07,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:07,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:07,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:07,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:07,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:07,232 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:07,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:07,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:07,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:07,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:07,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:07,236 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:07,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:07,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:07,238 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:07,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:07,240 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:07,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:07,242 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 15 select indices, 15 select index equivalence classes, 28 disjoint index pairs (out of 105 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 145 treesize of output 55 [2021-06-05 05:54:07,243 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:54:07,250 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:54:07,251 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:54:07,251 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:151, output treesize:7 [2021-06-05 05:54:07,261 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 8 proven. 160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:54:07,261 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1869999296] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:54:07,261 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:54:07,261 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 34 [2021-06-05 05:54:07,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795315922] [2021-06-05 05:54:07,262 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-06-05 05:54:07,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:54:07,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-06-05 05:54:07,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=1056, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 05:54:07,262 INFO L87 Difference]: Start difference. First operand 14063 states and 34531 transitions. Second operand has 35 states, 35 states have (on average 3.085714285714286) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:54:08,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:54:08,712 INFO L93 Difference]: Finished difference Result 22903 states and 56715 transitions. [2021-06-05 05:54:08,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 05:54:08,712 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.085714285714286) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-06-05 05:54:08,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:54:08,728 INFO L225 Difference]: With dead ends: 22903 [2021-06-05 05:54:08,729 INFO L226 Difference]: Without dead ends: 22815 [2021-06-05 05:54:08,729 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 789 ImplicationChecksByTransitivity, 1423.8ms TimeCoverageRelationStatistics Valid=307, Invalid=2885, Unknown=0, NotChecked=0, Total=3192 [2021-06-05 05:54:08,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22815 states. [2021-06-05 05:54:08,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22815 to 14063. [2021-06-05 05:54:08,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14063 states, 14062 states have (on average 2.4556250888920497) internal successors, (34531), 14062 states have internal predecessors, (34531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:54:08,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14063 states to 14063 states and 34531 transitions. [2021-06-05 05:54:08,907 INFO L78 Accepts]: Start accepts. Automaton has 14063 states and 34531 transitions. Word has length 65 [2021-06-05 05:54:08,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:54:08,907 INFO L482 AbstractCegarLoop]: Abstraction has 14063 states and 34531 transitions. [2021-06-05 05:54:08,907 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 3.085714285714286) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:54:08,907 INFO L276 IsEmpty]: Start isEmpty. Operand 14063 states and 34531 transitions. [2021-06-05 05:54:08,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-06-05 05:54:08,916 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:54:08,916 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:54:09,116 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105,103 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:54:09,116 INFO L430 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:54:09,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:54:09,117 INFO L82 PathProgramCache]: Analyzing trace with hash -644843563, now seen corresponding path program 100 times [2021-06-05 05:54:09,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:54:09,117 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750460136] [2021-06-05 05:54:09,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:54:09,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:54:09,453 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 8 proven. 160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:54:09,453 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:54:09,453 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750460136] [2021-06-05 05:54:09,453 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750460136] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:54:09,453 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685036463] [2021-06-05 05:54:09,453 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:54:09,487 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 05:54:09,487 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:54:09,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 66 conjunts are in the unsatisfiable core [2021-06-05 05:54:09,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:54:10,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:10,243 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:10,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:10,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:10,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:10,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:10,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:10,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:10,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:10,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:10,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:10,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:10,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:10,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:10,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:10,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:10,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:10,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:10,254 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:10,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:10,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:10,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:10,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:10,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:10,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:10,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:10,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:10,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:10,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:10,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:10,262 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:10,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:10,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:10,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:10,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:10,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:10,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:10,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:10,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:10,267 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:10,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:10,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:10,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:10,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:10,271 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:10,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:10,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:10,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:10,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:10,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:10,274 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:10,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:10,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:10,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:10,277 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:10,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:10,278 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 15 select indices, 15 select index equivalence classes, 28 disjoint index pairs (out of 105 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 145 treesize of output 55 [2021-06-05 05:54:10,279 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:54:10,284 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:54:10,285 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:54:10,285 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:151, output treesize:7 [2021-06-05 05:54:10,295 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 8 proven. 160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:54:10,296 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1685036463] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:54:10,296 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:54:10,296 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 34 [2021-06-05 05:54:10,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288303838] [2021-06-05 05:54:10,296 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-06-05 05:54:10,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:54:10,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-06-05 05:54:10,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=1056, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 05:54:10,296 INFO L87 Difference]: Start difference. First operand 14063 states and 34531 transitions. Second operand has 35 states, 35 states have (on average 3.085714285714286) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:54:12,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:54:12,217 INFO L93 Difference]: Finished difference Result 20679 states and 51067 transitions. [2021-06-05 05:54:12,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 05:54:12,217 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.085714285714286) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-06-05 05:54:12,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:54:12,235 INFO L225 Difference]: With dead ends: 20679 [2021-06-05 05:54:12,235 INFO L226 Difference]: Without dead ends: 20639 [2021-06-05 05:54:12,236 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 757 ImplicationChecksByTransitivity, 1409.2ms TimeCoverageRelationStatistics Valid=295, Invalid=2785, Unknown=0, NotChecked=0, Total=3080 [2021-06-05 05:54:12,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20639 states. [2021-06-05 05:54:12,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20639 to 14079. [2021-06-05 05:54:12,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14079 states, 14078 states have (on average 2.455675522091206) internal successors, (34571), 14078 states have internal predecessors, (34571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:54:12,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14079 states to 14079 states and 34571 transitions. [2021-06-05 05:54:12,410 INFO L78 Accepts]: Start accepts. Automaton has 14079 states and 34571 transitions. Word has length 65 [2021-06-05 05:54:12,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:54:12,410 INFO L482 AbstractCegarLoop]: Abstraction has 14079 states and 34571 transitions. [2021-06-05 05:54:12,410 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 3.085714285714286) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:54:12,410 INFO L276 IsEmpty]: Start isEmpty. Operand 14079 states and 34571 transitions. [2021-06-05 05:54:12,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-06-05 05:54:12,419 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:54:12,419 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:54:12,620 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 104 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable106 [2021-06-05 05:54:12,620 INFO L430 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:54:12,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:54:12,620 INFO L82 PathProgramCache]: Analyzing trace with hash -1077400619, now seen corresponding path program 101 times [2021-06-05 05:54:12,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:54:12,620 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779251430] [2021-06-05 05:54:12,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:54:12,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:54:12,972 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 8 proven. 160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:54:12,972 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:54:12,972 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779251430] [2021-06-05 05:54:12,972 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779251430] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:54:12,972 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523150123] [2021-06-05 05:54:12,972 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:54:13,006 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-06-05 05:54:13,006 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:54:13,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 68 conjunts are in the unsatisfiable core [2021-06-05 05:54:13,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:54:13,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:13,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:13,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:13,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:13,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:13,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:13,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:13,811 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:13,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:13,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:13,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:13,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:13,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:13,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:13,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:13,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:13,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:13,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:13,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:13,819 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:13,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:13,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:13,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:13,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:13,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:13,823 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:13,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:13,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:13,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:13,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:13,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:13,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:13,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:13,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:13,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:13,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:13,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:13,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:13,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:13,832 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:13,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:13,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:13,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:13,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:13,835 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:13,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:13,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:13,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:13,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:13,838 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:13,839 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 14 select indices, 14 select index equivalence classes, 28 disjoint index pairs (out of 91 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 145 treesize of output 55 [2021-06-05 05:54:13,840 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:54:13,845 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:54:13,846 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:54:13,846 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:151, output treesize:7 [2021-06-05 05:54:13,856 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 8 proven. 160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:54:13,856 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [523150123] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:54:13,856 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:54:13,856 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 33 [2021-06-05 05:54:13,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695194355] [2021-06-05 05:54:13,856 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-06-05 05:54:13,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:54:13,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-06-05 05:54:13,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=993, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 05:54:13,857 INFO L87 Difference]: Start difference. First operand 14079 states and 34571 transitions. Second operand has 34 states, 34 states have (on average 3.0588235294117645) internal successors, (104), 33 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:54:15,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:54:15,467 INFO L93 Difference]: Finished difference Result 24675 states and 60920 transitions. [2021-06-05 05:54:15,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-05 05:54:15,467 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.0588235294117645) internal successors, (104), 33 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-06-05 05:54:15,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:54:15,491 INFO L225 Difference]: With dead ends: 24675 [2021-06-05 05:54:15,491 INFO L226 Difference]: Without dead ends: 24183 [2021-06-05 05:54:15,491 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 49 SyntacticMatches, 3 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 890 ImplicationChecksByTransitivity, 1561.0ms TimeCoverageRelationStatistics Valid=349, Invalid=3311, Unknown=0, NotChecked=0, Total=3660 [2021-06-05 05:54:15,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24183 states. [2021-06-05 05:54:15,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24183 to 16303. [2021-06-05 05:54:15,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16303 states, 16302 states have (on average 2.457796589375537) internal successors, (40067), 16302 states have internal predecessors, (40067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:54:15,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16303 states to 16303 states and 40067 transitions. [2021-06-05 05:54:15,708 INFO L78 Accepts]: Start accepts. Automaton has 16303 states and 40067 transitions. Word has length 65 [2021-06-05 05:54:15,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:54:15,708 INFO L482 AbstractCegarLoop]: Abstraction has 16303 states and 40067 transitions. [2021-06-05 05:54:15,708 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 3.0588235294117645) internal successors, (104), 33 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:54:15,708 INFO L276 IsEmpty]: Start isEmpty. Operand 16303 states and 40067 transitions. [2021-06-05 05:54:15,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-06-05 05:54:15,720 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:54:15,720 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:54:15,921 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 105 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable107 [2021-06-05 05:54:15,921 INFO L430 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:54:15,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:54:15,921 INFO L82 PathProgramCache]: Analyzing trace with hash 1111499733, now seen corresponding path program 102 times [2021-06-05 05:54:15,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:54:15,921 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091151786] [2021-06-05 05:54:15,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:54:15,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:54:16,286 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 8 proven. 160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:54:16,286 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:54:16,286 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091151786] [2021-06-05 05:54:16,286 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091151786] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:54:16,286 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740296989] [2021-06-05 05:54:16,287 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:54:16,333 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-06-05 05:54:16,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:54:16,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 67 conjunts are in the unsatisfiable core [2021-06-05 05:54:16,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:54:17,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:17,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:17,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:17,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:17,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:17,369 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:17,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:17,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:17,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:17,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:17,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:17,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:17,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:17,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:17,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:17,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:17,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:17,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:17,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:17,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:17,379 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:17,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:17,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:17,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:17,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:17,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:17,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:17,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:17,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:17,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:17,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:17,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:17,387 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:17,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:17,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:17,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:17,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:17,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:17,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:17,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:17,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:17,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:17,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:17,394 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:17,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:17,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:17,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:17,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:17,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:17,398 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:17,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:17,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:17,400 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:17,400 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 14 select indices, 14 select index equivalence classes, 28 disjoint index pairs (out of 91 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 141 treesize of output 55 [2021-06-05 05:54:17,401 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:54:17,415 INFO L628 ElimStorePlain]: treesize reduction 5, result has 81.5 percent of original size [2021-06-05 05:54:17,416 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:54:17,416 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:161, output treesize:7 [2021-06-05 05:54:17,426 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 8 proven. 160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:54:17,426 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1740296989] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:54:17,426 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:54:17,426 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 20] total 30 [2021-06-05 05:54:17,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369550949] [2021-06-05 05:54:17,426 INFO L462 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-06-05 05:54:17,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:54:17,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-06-05 05:54:17,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=835, Unknown=0, NotChecked=0, Total=930 [2021-06-05 05:54:17,427 INFO L87 Difference]: Start difference. First operand 16303 states and 40067 transitions. Second operand has 31 states, 31 states have (on average 3.3548387096774195) internal successors, (104), 30 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:54:20,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:54:20,704 INFO L93 Difference]: Finished difference Result 21779 states and 53546 transitions. [2021-06-05 05:54:20,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-05 05:54:20,704 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.3548387096774195) internal successors, (104), 30 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-06-05 05:54:20,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:54:20,726 INFO L225 Difference]: With dead ends: 21779 [2021-06-05 05:54:20,726 INFO L226 Difference]: Without dead ends: 21335 [2021-06-05 05:54:20,726 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 52 SyntacticMatches, 3 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 816 ImplicationChecksByTransitivity, 2051.9ms TimeCoverageRelationStatistics Valid=284, Invalid=3022, Unknown=0, NotChecked=0, Total=3306 [2021-06-05 05:54:20,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21335 states. [2021-06-05 05:54:20,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21335 to 18591. [2021-06-05 05:54:20,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18591 states, 18590 states have (on average 2.4615922538999464) internal successors, (45761), 18590 states have internal predecessors, (45761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:54:20,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18591 states to 18591 states and 45761 transitions. [2021-06-05 05:54:20,959 INFO L78 Accepts]: Start accepts. Automaton has 18591 states and 45761 transitions. Word has length 65 [2021-06-05 05:54:20,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:54:20,959 INFO L482 AbstractCegarLoop]: Abstraction has 18591 states and 45761 transitions. [2021-06-05 05:54:20,959 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 3.3548387096774195) internal successors, (104), 30 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:54:20,959 INFO L276 IsEmpty]: Start isEmpty. Operand 18591 states and 45761 transitions. [2021-06-05 05:54:20,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-06-05 05:54:20,973 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:54:20,973 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:54:21,173 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,106 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:54:21,173 INFO L430 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:54:21,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:54:21,174 INFO L82 PathProgramCache]: Analyzing trace with hash -1636446763, now seen corresponding path program 103 times [2021-06-05 05:54:21,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:54:21,174 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504259011] [2021-06-05 05:54:21,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:54:21,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:54:21,520 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 8 proven. 160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:54:21,520 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:54:21,520 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504259011] [2021-06-05 05:54:21,520 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504259011] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:54:21,520 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832599947] [2021-06-05 05:54:21,520 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:54:21,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:54:21,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 66 conjunts are in the unsatisfiable core [2021-06-05 05:54:21,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:54:22,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:22,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:22,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:22,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:22,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:22,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:22,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:22,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:22,403 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:22,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:22,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:22,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:22,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:22,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:22,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:22,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:22,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:22,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:22,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:22,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:22,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:22,411 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:22,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:22,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:22,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:22,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:22,414 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:22,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:22,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:22,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:22,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:22,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:22,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:22,418 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:22,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:22,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:22,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:22,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:22,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:22,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:22,423 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:22,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:22,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:22,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:22,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:22,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:22,426 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:22,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:22,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:22,428 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 14 select indices, 14 select index equivalence classes, 28 disjoint index pairs (out of 91 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 145 treesize of output 55 [2021-06-05 05:54:22,429 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:54:22,434 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:54:22,435 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:54:22,435 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:151, output treesize:7 [2021-06-05 05:54:22,445 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 8 proven. 160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:54:22,445 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1832599947] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:54:22,445 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:54:22,445 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 33 [2021-06-05 05:54:22,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135179206] [2021-06-05 05:54:22,446 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-06-05 05:54:22,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:54:22,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-06-05 05:54:22,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=991, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 05:54:22,446 INFO L87 Difference]: Start difference. First operand 18591 states and 45761 transitions. Second operand has 34 states, 34 states have (on average 3.0588235294117645) internal successors, (104), 33 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:54:23,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:54:23,598 INFO L93 Difference]: Finished difference Result 27583 states and 68478 transitions. [2021-06-05 05:54:23,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-05 05:54:23,599 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.0588235294117645) internal successors, (104), 33 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-06-05 05:54:23,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:54:23,627 INFO L225 Difference]: With dead ends: 27583 [2021-06-05 05:54:23,627 INFO L226 Difference]: Without dead ends: 27351 [2021-06-05 05:54:23,628 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 49 SyntacticMatches, 3 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 746 ImplicationChecksByTransitivity, 1443.8ms TimeCoverageRelationStatistics Valid=311, Invalid=2881, Unknown=0, NotChecked=0, Total=3192 [2021-06-05 05:54:23,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27351 states. [2021-06-05 05:54:23,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27351 to 18767. [2021-06-05 05:54:23,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18767 states, 18766 states have (on average 2.4615261643397632) internal successors, (46193), 18766 states have internal predecessors, (46193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:54:23,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18767 states to 18767 states and 46193 transitions. [2021-06-05 05:54:23,890 INFO L78 Accepts]: Start accepts. Automaton has 18767 states and 46193 transitions. Word has length 65 [2021-06-05 05:54:23,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:54:23,890 INFO L482 AbstractCegarLoop]: Abstraction has 18767 states and 46193 transitions. [2021-06-05 05:54:23,890 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 3.0588235294117645) internal successors, (104), 33 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:54:23,890 INFO L276 IsEmpty]: Start isEmpty. Operand 18767 states and 46193 transitions. [2021-06-05 05:54:23,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-06-05 05:54:23,904 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:54:23,904 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:54:24,104 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,107 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:54:24,105 INFO L430 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:54:24,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:54:24,105 INFO L82 PathProgramCache]: Analyzing trace with hash -211390507, now seen corresponding path program 104 times [2021-06-05 05:54:24,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:54:24,105 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391240456] [2021-06-05 05:54:24,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:54:24,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:54:24,432 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 8 proven. 157 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-06-05 05:54:24,432 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:54:24,432 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391240456] [2021-06-05 05:54:24,433 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391240456] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:54:24,433 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093280583] [2021-06-05 05:54:24,433 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:54:24,464 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 05:54:24,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:54:24,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 66 conjunts are in the unsatisfiable core [2021-06-05 05:54:24,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:54:25,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:25,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:25,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:25,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:25,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:25,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:25,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:25,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:25,225 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:25,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:25,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:25,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:25,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:25,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:25,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:25,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:25,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:25,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:25,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:25,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:25,233 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:25,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:25,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:25,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:25,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:25,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:25,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:25,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:25,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:25,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:25,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:25,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:25,240 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:25,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:25,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:25,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:25,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:25,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:25,244 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:25,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:25,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:25,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:25,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:25,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:25,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:25,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:25,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:25,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:25,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:25,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:25,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:25,252 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:25,252 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:25,253 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 14 select indices, 14 select index equivalence classes, 28 disjoint index pairs (out of 91 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 145 treesize of output 55 [2021-06-05 05:54:25,254 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:54:25,260 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:54:25,261 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:54:25,261 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:151, output treesize:7 [2021-06-05 05:54:25,272 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 11 proven. 157 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:54:25,272 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2093280583] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:54:25,272 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:54:25,273 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 20] total 30 [2021-06-05 05:54:25,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193417243] [2021-06-05 05:54:25,273 INFO L462 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-06-05 05:54:25,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:54:25,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-06-05 05:54:25,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=826, Unknown=0, NotChecked=0, Total=930 [2021-06-05 05:54:25,273 INFO L87 Difference]: Start difference. First operand 18767 states and 46193 transitions. Second operand has 31 states, 31 states have (on average 3.2903225806451615) internal successors, (102), 30 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:54:27,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:54:27,951 INFO L93 Difference]: Finished difference Result 26623 states and 65734 transitions. [2021-06-05 05:54:27,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-05 05:54:27,951 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.2903225806451615) internal successors, (102), 30 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-06-05 05:54:27,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:54:27,980 INFO L225 Difference]: With dead ends: 26623 [2021-06-05 05:54:27,981 INFO L226 Difference]: Without dead ends: 26103 [2021-06-05 05:54:27,981 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 52 SyntacticMatches, 3 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 939 ImplicationChecksByTransitivity, 2003.4ms TimeCoverageRelationStatistics Valid=353, Invalid=3307, Unknown=0, NotChecked=0, Total=3660 [2021-06-05 05:54:28,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26103 states. [2021-06-05 05:54:28,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26103 to 19727. [2021-06-05 05:54:28,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19727 states, 19726 states have (on average 2.462181891919294) internal successors, (48569), 19726 states have internal predecessors, (48569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:54:28,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19727 states to 19727 states and 48569 transitions. [2021-06-05 05:54:28,313 INFO L78 Accepts]: Start accepts. Automaton has 19727 states and 48569 transitions. Word has length 65 [2021-06-05 05:54:28,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:54:28,313 INFO L482 AbstractCegarLoop]: Abstraction has 19727 states and 48569 transitions. [2021-06-05 05:54:28,313 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 3.2903225806451615) internal successors, (102), 30 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:54:28,313 INFO L276 IsEmpty]: Start isEmpty. Operand 19727 states and 48569 transitions. [2021-06-05 05:54:28,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-06-05 05:54:28,331 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:54:28,331 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:54:28,532 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,108 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:54:28,532 INFO L430 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:54:28,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:54:28,532 INFO L82 PathProgramCache]: Analyzing trace with hash -236375083, now seen corresponding path program 105 times [2021-06-05 05:54:28,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:54:28,533 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302036674] [2021-06-05 05:54:28,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:54:28,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:54:28,882 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 8 proven. 160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:54:28,882 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:54:28,883 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302036674] [2021-06-05 05:54:28,883 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302036674] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:54:28,883 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317747633] [2021-06-05 05:54:28,883 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:54:28,919 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-06-05 05:54:28,919 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:54:28,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 68 conjunts are in the unsatisfiable core [2021-06-05 05:54:28,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:54:29,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:29,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:29,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:29,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:29,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:29,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:29,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:29,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:29,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:29,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:29,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:29,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:29,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:29,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:29,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:29,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:29,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:29,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:29,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:29,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:29,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:29,691 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:29,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:29,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:29,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:29,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:29,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:29,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:29,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:29,696 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:29,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:29,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:29,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:29,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:29,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:29,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:29,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:29,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:29,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:29,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:29,703 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:29,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:29,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:29,705 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:29,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:29,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:29,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:29,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:29,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:29,709 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:29,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:29,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:29,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:29,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:29,717 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:29,718 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 14 select indices, 14 select index equivalence classes, 28 disjoint index pairs (out of 91 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 145 treesize of output 55 [2021-06-05 05:54:29,720 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:54:29,726 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:54:29,727 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:54:29,727 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:151, output treesize:7 [2021-06-05 05:54:29,737 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 8 proven. 160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:54:29,737 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [317747633] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:54:29,737 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:54:29,738 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20] total 32 [2021-06-05 05:54:29,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072755334] [2021-06-05 05:54:29,738 INFO L462 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-06-05 05:54:29,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:54:29,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-06-05 05:54:29,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=934, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 05:54:29,738 INFO L87 Difference]: Start difference. First operand 19727 states and 48569 transitions. Second operand has 33 states, 33 states have (on average 3.1515151515151514) internal successors, (104), 32 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:54:31,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:54:31,582 INFO L93 Difference]: Finished difference Result 32131 states and 79518 transitions. [2021-06-05 05:54:31,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-05 05:54:31,583 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.1515151515151514) internal successors, (104), 32 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-06-05 05:54:31,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:54:31,621 INFO L225 Difference]: With dead ends: 32131 [2021-06-05 05:54:31,621 INFO L226 Difference]: Without dead ends: 31719 [2021-06-05 05:54:31,621 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 50 SyntacticMatches, 3 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 733 ImplicationChecksByTransitivity, 1449.2ms TimeCoverageRelationStatistics Valid=298, Invalid=2782, Unknown=0, NotChecked=0, Total=3080 [2021-06-05 05:54:31,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31719 states. [2021-06-05 05:54:31,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31719 to 19679. [2021-06-05 05:54:31,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19679 states, 19678 states have (on average 2.4620896432564283) internal successors, (48449), 19678 states have internal predecessors, (48449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:54:31,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19679 states to 19679 states and 48449 transitions. [2021-06-05 05:54:31,964 INFO L78 Accepts]: Start accepts. Automaton has 19679 states and 48449 transitions. Word has length 65 [2021-06-05 05:54:31,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:54:31,964 INFO L482 AbstractCegarLoop]: Abstraction has 19679 states and 48449 transitions. [2021-06-05 05:54:31,964 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 3.1515151515151514) internal successors, (104), 32 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:54:31,964 INFO L276 IsEmpty]: Start isEmpty. Operand 19679 states and 48449 transitions. [2021-06-05 05:54:31,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-06-05 05:54:31,978 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:54:31,978 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:54:32,179 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111,109 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:54:32,179 INFO L430 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:54:32,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:54:32,179 INFO L82 PathProgramCache]: Analyzing trace with hash -1452673067, now seen corresponding path program 106 times [2021-06-05 05:54:32,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:54:32,179 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981213975] [2021-06-05 05:54:32,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:54:32,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:54:32,526 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 8 proven. 160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:54:32,526 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:54:32,526 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981213975] [2021-06-05 05:54:32,527 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981213975] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:54:32,527 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140384001] [2021-06-05 05:54:32,527 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:54:32,558 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 05:54:32,559 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:54:32,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 66 conjunts are in the unsatisfiable core [2021-06-05 05:54:32,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:54:33,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:33,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:33,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:33,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:33,263 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:33,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:33,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:33,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:33,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:33,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:33,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:33,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:33,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:33,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:33,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:33,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:33,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:33,272 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:33,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:33,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:33,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:33,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:33,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:33,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:33,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:33,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:33,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:33,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:33,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:33,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:33,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:33,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:33,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:33,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:33,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:33,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:33,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:33,284 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:33,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:33,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:33,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:33,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:33,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:33,288 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:33,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:33,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:33,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:33,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:33,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:33,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:33,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:33,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:33,296 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:33,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:33,297 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:33,298 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 14 select indices, 14 select index equivalence classes, 28 disjoint index pairs (out of 91 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 145 treesize of output 55 [2021-06-05 05:54:33,299 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:54:33,307 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:54:33,308 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:54:33,308 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:151, output treesize:7 [2021-06-05 05:54:33,320 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 8 proven. 160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:54:33,321 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2140384001] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:54:33,321 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:54:33,321 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 33 [2021-06-05 05:54:33,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350253080] [2021-06-05 05:54:33,321 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-06-05 05:54:33,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:54:33,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-06-05 05:54:33,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=991, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 05:54:33,321 INFO L87 Difference]: Start difference. First operand 19679 states and 48449 transitions. Second operand has 34 states, 34 states have (on average 3.0588235294117645) internal successors, (104), 33 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:54:35,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:54:35,088 INFO L93 Difference]: Finished difference Result 28103 states and 69577 transitions. [2021-06-05 05:54:35,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-05 05:54:35,088 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.0588235294117645) internal successors, (104), 33 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-06-05 05:54:35,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:54:35,117 INFO L225 Difference]: With dead ends: 28103 [2021-06-05 05:54:35,117 INFO L226 Difference]: Without dead ends: 28015 [2021-06-05 05:54:35,118 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 49 SyntacticMatches, 3 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 741 ImplicationChecksByTransitivity, 1405.7ms TimeCoverageRelationStatistics Valid=311, Invalid=2881, Unknown=0, NotChecked=0, Total=3192 [2021-06-05 05:54:35,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28015 states. [2021-06-05 05:54:35,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28015 to 19743. [2021-06-05 05:54:35,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19743 states, 19742 states have (on average 2.462212541789079) internal successors, (48609), 19742 states have internal predecessors, (48609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:54:35,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19743 states to 19743 states and 48609 transitions. [2021-06-05 05:54:35,438 INFO L78 Accepts]: Start accepts. Automaton has 19743 states and 48609 transitions. Word has length 65 [2021-06-05 05:54:35,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:54:35,438 INFO L482 AbstractCegarLoop]: Abstraction has 19743 states and 48609 transitions. [2021-06-05 05:54:35,439 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 3.0588235294117645) internal successors, (104), 33 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:54:35,439 INFO L276 IsEmpty]: Start isEmpty. Operand 19743 states and 48609 transitions. [2021-06-05 05:54:35,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-06-05 05:54:35,454 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:54:35,454 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:54:35,654 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2021-06-05 05:54:35,654 INFO L430 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:54:35,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:54:35,655 INFO L82 PathProgramCache]: Analyzing trace with hash 416913877, now seen corresponding path program 107 times [2021-06-05 05:54:35,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:54:35,655 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309155173] [2021-06-05 05:54:35,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:54:35,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:54:36,001 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 8 proven. 160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:54:36,001 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:54:36,002 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309155173] [2021-06-05 05:54:36,002 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309155173] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:54:36,002 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253502635] [2021-06-05 05:54:36,002 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:54:36,037 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-06-05 05:54:36,037 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:54:36,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 67 conjunts are in the unsatisfiable core [2021-06-05 05:54:36,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:54:36,887 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:36,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:36,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:36,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:36,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:36,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:36,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:36,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:36,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:36,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:36,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:36,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:36,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:36,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:36,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:36,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:36,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:36,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:36,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:36,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:36,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:36,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:36,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:36,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:36,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:36,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:36,904 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:36,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:36,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:36,906 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:36,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:36,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:36,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:36,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:36,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:36,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:36,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:36,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:36,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:36,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:36,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:36,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:36,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:36,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:36,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:36,916 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:36,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:36,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:36,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:36,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:36,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:36,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:36,920 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:36,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:36,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:36,922 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:36,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:36,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:36,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:36,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:36,925 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:36,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:36,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:36,927 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:36,928 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 16 select indices, 16 select index equivalence classes, 28 disjoint index pairs (out of 120 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 104 treesize of output 44 [2021-06-05 05:54:36,929 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:54:36,935 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:54:36,937 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:54:36,937 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:112, output treesize:3 [2021-06-05 05:54:36,968 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 8 proven. 160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:54:36,969 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [253502635] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:54:36,969 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:54:36,969 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 37 [2021-06-05 05:54:36,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79496154] [2021-06-05 05:54:36,969 INFO L462 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-06-05 05:54:36,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:54:36,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-06-05 05:54:36,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1295, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 05:54:36,969 INFO L87 Difference]: Start difference. First operand 19743 states and 48609 transitions. Second operand has 38 states, 38 states have (on average 3.1578947368421053) internal successors, (120), 37 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:54:40,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:54:40,561 INFO L93 Difference]: Finished difference Result 27223 states and 67356 transitions. [2021-06-05 05:54:40,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-05 05:54:40,561 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.1578947368421053) internal successors, (120), 37 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-06-05 05:54:40,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:54:40,587 INFO L225 Difference]: With dead ends: 27223 [2021-06-05 05:54:40,587 INFO L226 Difference]: Without dead ends: 26743 [2021-06-05 05:54:40,587 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 660 ImplicationChecksByTransitivity, 2584.5ms TimeCoverageRelationStatistics Valid=355, Invalid=3805, Unknown=0, NotChecked=0, Total=4160 [2021-06-05 05:54:40,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26743 states. [2021-06-05 05:54:40,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26743 to 19999. [2021-06-05 05:54:40,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19999 states, 19998 states have (on average 2.4622962296229622) internal successors, (49241), 19998 states have internal predecessors, (49241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:54:40,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19999 states to 19999 states and 49241 transitions. [2021-06-05 05:54:40,836 INFO L78 Accepts]: Start accepts. Automaton has 19999 states and 49241 transitions. Word has length 65 [2021-06-05 05:54:40,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:54:40,836 INFO L482 AbstractCegarLoop]: Abstraction has 19999 states and 49241 transitions. [2021-06-05 05:54:40,836 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 3.1578947368421053) internal successors, (120), 37 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:54:40,836 INFO L276 IsEmpty]: Start isEmpty. Operand 19999 states and 49241 transitions. [2021-06-05 05:54:40,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-06-05 05:54:40,851 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:54:40,851 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:54:41,052 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 111 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable113 [2021-06-05 05:54:41,053 INFO L430 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:54:41,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:54:41,053 INFO L82 PathProgramCache]: Analyzing trace with hash 1215526869, now seen corresponding path program 108 times [2021-06-05 05:54:41,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:54:41,053 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377160587] [2021-06-05 05:54:41,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:54:41,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:54:41,400 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 8 proven. 160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:54:41,400 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:54:41,400 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377160587] [2021-06-05 05:54:41,400 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377160587] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:54:41,400 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1927773631] [2021-06-05 05:54:41,400 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:54:41,433 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-06-05 05:54:41,433 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:54:41,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 66 conjunts are in the unsatisfiable core [2021-06-05 05:54:41,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:54:42,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:42,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:42,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:42,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:42,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:42,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:42,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:42,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:42,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:42,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:42,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:42,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:42,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:42,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:42,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:42,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:42,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:42,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:42,145 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:42,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:42,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:42,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:42,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:42,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:42,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:42,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:42,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:42,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:42,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:42,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:42,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:42,153 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:42,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:42,154 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:42,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:42,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:42,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:42,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:42,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:42,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:42,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:42,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:42,159 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:42,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:42,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:42,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:42,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:42,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:42,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:42,163 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:42,165 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 13 select indices, 13 select index equivalence classes, 28 disjoint index pairs (out of 78 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 145 treesize of output 55 [2021-06-05 05:54:42,166 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:54:42,171 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:54:42,172 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:54:42,172 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:151, output treesize:7 [2021-06-05 05:54:42,182 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 8 proven. 160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:54:42,182 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1927773631] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:54:42,182 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:54:42,182 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 32 [2021-06-05 05:54:42,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939851113] [2021-06-05 05:54:42,182 INFO L462 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-06-05 05:54:42,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:54:42,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-06-05 05:54:42,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=928, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 05:54:42,183 INFO L87 Difference]: Start difference. First operand 19999 states and 49241 transitions. Second operand has 33 states, 33 states have (on average 3.0303030303030303) internal successors, (100), 32 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:54:43,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:54:43,813 INFO L93 Difference]: Finished difference Result 34399 states and 85414 transitions. [2021-06-05 05:54:43,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-05 05:54:43,813 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0303030303030303) internal successors, (100), 32 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-06-05 05:54:43,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:54:43,850 INFO L225 Difference]: With dead ends: 34399 [2021-06-05 05:54:43,850 INFO L226 Difference]: Without dead ends: 34119 [2021-06-05 05:54:43,850 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 49 SyntacticMatches, 4 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 805 ImplicationChecksByTransitivity, 1514.3ms TimeCoverageRelationStatistics Valid=342, Invalid=3080, Unknown=0, NotChecked=0, Total=3422 [2021-06-05 05:54:43,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34119 states. [2021-06-05 05:54:44,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34119 to 20975. [2021-06-05 05:54:44,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20975 states, 20974 states have (on average 2.4640507294745877) internal successors, (51681), 20974 states have internal predecessors, (51681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:54:44,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20975 states to 20975 states and 51681 transitions. [2021-06-05 05:54:44,159 INFO L78 Accepts]: Start accepts. Automaton has 20975 states and 51681 transitions. Word has length 65 [2021-06-05 05:54:44,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:54:44,159 INFO L482 AbstractCegarLoop]: Abstraction has 20975 states and 51681 transitions. [2021-06-05 05:54:44,160 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 3.0303030303030303) internal successors, (100), 32 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:54:44,160 INFO L276 IsEmpty]: Start isEmpty. Operand 20975 states and 51681 transitions. [2021-06-05 05:54:44,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-06-05 05:54:44,175 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:54:44,175 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:54:44,375 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable114 [2021-06-05 05:54:44,376 INFO L430 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:54:44,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:54:44,376 INFO L82 PathProgramCache]: Analyzing trace with hash -147720235, now seen corresponding path program 109 times [2021-06-05 05:54:44,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:54:44,376 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132296190] [2021-06-05 05:54:44,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:54:44,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:54:44,636 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 8 proven. 158 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-05 05:54:44,637 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:54:44,637 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132296190] [2021-06-05 05:54:44,637 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132296190] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:54:44,637 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936534955] [2021-06-05 05:54:44,637 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:54:44,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:54:44,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 66 conjunts are in the unsatisfiable core [2021-06-05 05:54:44,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:54:45,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:45,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:45,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:45,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:45,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:45,283 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:45,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:45,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:45,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:45,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:45,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:45,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:45,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:45,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:45,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:45,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:45,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:45,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:45,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:45,292 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:45,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:45,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:45,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:45,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:45,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:45,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:45,296 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:45,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:45,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:45,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:45,299 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:45,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:45,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:45,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:45,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:45,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:45,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:45,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:45,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:45,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:45,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:45,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:45,306 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:45,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:45,308 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 13 select indices, 13 select index equivalence classes, 28 disjoint index pairs (out of 78 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 145 treesize of output 55 [2021-06-05 05:54:45,309 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:54:45,314 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:54:45,315 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:54:45,315 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:151, output treesize:7 [2021-06-05 05:54:45,325 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 10 proven. 158 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:54:45,325 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936534955] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:54:45,325 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:54:45,325 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 20] total 28 [2021-06-05 05:54:45,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136551651] [2021-06-05 05:54:45,325 INFO L462 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-06-05 05:54:45,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:54:45,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-06-05 05:54:45,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=720, Unknown=0, NotChecked=0, Total=812 [2021-06-05 05:54:45,326 INFO L87 Difference]: Start difference. First operand 20975 states and 51681 transitions. Second operand has 29 states, 29 states have (on average 3.3793103448275863) internal successors, (98), 28 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:54:46,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:54:46,461 INFO L93 Difference]: Finished difference Result 25435 states and 62776 transitions. [2021-06-05 05:54:46,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 05:54:46,462 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.3793103448275863) internal successors, (98), 28 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-06-05 05:54:46,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:54:46,485 INFO L225 Difference]: With dead ends: 25435 [2021-06-05 05:54:46,485 INFO L226 Difference]: Without dead ends: 25335 [2021-06-05 05:54:46,485 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 53 SyntacticMatches, 4 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 539 ImplicationChecksByTransitivity, 1164.1ms TimeCoverageRelationStatistics Valid=219, Invalid=2037, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 05:54:46,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25335 states. [2021-06-05 05:54:46,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25335 to 21167. [2021-06-05 05:54:46,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21167 states, 21166 states have (on average 2.463904374940943) internal successors, (52151), 21166 states have internal predecessors, (52151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:54:46,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21167 states to 21167 states and 52151 transitions. [2021-06-05 05:54:46,731 INFO L78 Accepts]: Start accepts. Automaton has 21167 states and 52151 transitions. Word has length 65 [2021-06-05 05:54:46,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:54:46,731 INFO L482 AbstractCegarLoop]: Abstraction has 21167 states and 52151 transitions. [2021-06-05 05:54:46,731 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 3.3793103448275863) internal successors, (98), 28 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:54:46,731 INFO L276 IsEmpty]: Start isEmpty. Operand 21167 states and 52151 transitions. [2021-06-05 05:54:46,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-06-05 05:54:46,746 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:54:46,746 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:54:46,946 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115,113 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:54:46,947 INFO L430 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:54:46,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:54:46,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1399300565, now seen corresponding path program 110 times [2021-06-05 05:54:46,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:54:46,947 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84878708] [2021-06-05 05:54:46,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:54:46,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:54:47,297 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 8 proven. 160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:54:47,297 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:54:47,297 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84878708] [2021-06-05 05:54:47,297 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84878708] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:54:47,297 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934990267] [2021-06-05 05:54:47,297 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:54:47,328 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 05:54:47,328 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:54:47,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 66 conjunts are in the unsatisfiable core [2021-06-05 05:54:47,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:54:48,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:48,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:48,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:48,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:48,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:48,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:48,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:48,023 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:48,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:48,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:48,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:48,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:48,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:48,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:48,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:48,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:48,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:48,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:48,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:48,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:48,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:48,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:48,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:48,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:48,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:48,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:48,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:48,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:48,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:48,037 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:48,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:48,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:48,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:48,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:48,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:48,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:48,041 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:48,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:48,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:48,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:48,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:48,044 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:48,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:48,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:48,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:48,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:48,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:48,048 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:48,048 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 13 select indices, 13 select index equivalence classes, 28 disjoint index pairs (out of 78 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 145 treesize of output 55 [2021-06-05 05:54:48,049 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:54:48,054 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:54:48,055 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:54:48,055 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:151, output treesize:7 [2021-06-05 05:54:48,065 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 8 proven. 160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:54:48,065 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1934990267] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:54:48,065 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:54:48,065 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 32 [2021-06-05 05:54:48,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450650581] [2021-06-05 05:54:48,066 INFO L462 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-06-05 05:54:48,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:54:48,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-06-05 05:54:48,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=928, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 05:54:48,066 INFO L87 Difference]: Start difference. First operand 21167 states and 52151 transitions. Second operand has 33 states, 33 states have (on average 3.0303030303030303) internal successors, (100), 32 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:54:49,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:54:49,271 INFO L93 Difference]: Finished difference Result 31631 states and 78302 transitions. [2021-06-05 05:54:49,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-05 05:54:49,272 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0303030303030303) internal successors, (100), 32 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-06-05 05:54:49,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:54:49,305 INFO L225 Difference]: With dead ends: 31631 [2021-06-05 05:54:49,306 INFO L226 Difference]: Without dead ends: 31543 [2021-06-05 05:54:49,306 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 49 SyntacticMatches, 4 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 698 ImplicationChecksByTransitivity, 1384.9ms TimeCoverageRelationStatistics Valid=309, Invalid=2771, Unknown=0, NotChecked=0, Total=3080 [2021-06-05 05:54:49,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31543 states. [2021-06-05 05:54:49,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31543 to 21103. [2021-06-05 05:54:49,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21103 states, 21102 states have (on average 2.463794900957255) internal successors, (51991), 21102 states have internal predecessors, (51991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:54:49,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21103 states to 21103 states and 51991 transitions. [2021-06-05 05:54:49,706 INFO L78 Accepts]: Start accepts. Automaton has 21103 states and 51991 transitions. Word has length 65 [2021-06-05 05:54:49,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:54:49,706 INFO L482 AbstractCegarLoop]: Abstraction has 21103 states and 51991 transitions. [2021-06-05 05:54:49,706 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 3.0303030303030303) internal successors, (100), 32 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:54:49,706 INFO L276 IsEmpty]: Start isEmpty. Operand 21103 states and 51991 transitions. [2021-06-05 05:54:49,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-06-05 05:54:49,723 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:54:49,723 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:54:49,923 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 114 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable116 [2021-06-05 05:54:49,924 INFO L430 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:54:49,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:54:49,924 INFO L82 PathProgramCache]: Analyzing trace with hash -1026079787, now seen corresponding path program 111 times [2021-06-05 05:54:49,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:54:49,924 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114519949] [2021-06-05 05:54:49,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:54:49,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:54:50,309 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 8 proven. 160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:54:50,309 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:54:50,309 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114519949] [2021-06-05 05:54:50,310 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114519949] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:54:50,310 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175196207] [2021-06-05 05:54:50,310 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:54:50,345 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-06-05 05:54:50,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:54:50,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 66 conjunts are in the unsatisfiable core [2021-06-05 05:54:50,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:54:51,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:51,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:51,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:51,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:51,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:51,039 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:51,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:51,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:51,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:51,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:51,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:51,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:51,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:51,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:51,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:51,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:51,046 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:51,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:51,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:51,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:51,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:51,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:51,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:51,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:51,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:51,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:51,052 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:51,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:51,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:51,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:51,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:51,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:51,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:51,057 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:51,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:51,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:51,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:51,059 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:51,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:51,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:51,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:51,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:51,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:51,063 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 13 select indices, 13 select index equivalence classes, 28 disjoint index pairs (out of 78 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 145 treesize of output 55 [2021-06-05 05:54:51,064 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:54:51,069 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:54:51,070 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:54:51,070 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:151, output treesize:7 [2021-06-05 05:54:51,080 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 8 proven. 160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:54:51,080 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175196207] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:54:51,080 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:54:51,080 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 32 [2021-06-05 05:54:51,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470383471] [2021-06-05 05:54:51,080 INFO L462 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-06-05 05:54:51,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:54:51,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-06-05 05:54:51,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=928, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 05:54:51,081 INFO L87 Difference]: Start difference. First operand 21103 states and 51991 transitions. Second operand has 33 states, 33 states have (on average 3.0303030303030303) internal successors, (100), 32 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:54:52,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:54:52,270 INFO L93 Difference]: Finished difference Result 29239 states and 72271 transitions. [2021-06-05 05:54:52,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 05:54:52,270 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0303030303030303) internal successors, (100), 32 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-06-05 05:54:52,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:54:52,306 INFO L225 Difference]: With dead ends: 29239 [2021-06-05 05:54:52,306 INFO L226 Difference]: Without dead ends: 29199 [2021-06-05 05:54:52,307 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 49 SyntacticMatches, 4 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 668 ImplicationChecksByTransitivity, 1389.3ms TimeCoverageRelationStatistics Valid=297, Invalid=2673, Unknown=0, NotChecked=0, Total=2970 [2021-06-05 05:54:52,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29199 states. [2021-06-05 05:54:52,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29199 to 21103. [2021-06-05 05:54:52,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21103 states, 21102 states have (on average 2.463794900957255) internal successors, (51991), 21102 states have internal predecessors, (51991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:54:52,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21103 states to 21103 states and 51991 transitions. [2021-06-05 05:54:52,584 INFO L78 Accepts]: Start accepts. Automaton has 21103 states and 51991 transitions. Word has length 65 [2021-06-05 05:54:52,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:54:52,584 INFO L482 AbstractCegarLoop]: Abstraction has 21103 states and 51991 transitions. [2021-06-05 05:54:52,584 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 3.0303030303030303) internal successors, (100), 32 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:54:52,585 INFO L276 IsEmpty]: Start isEmpty. Operand 21103 states and 51991 transitions. [2021-06-05 05:54:52,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-06-05 05:54:52,600 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:54:52,600 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:54:52,800 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117,115 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:54:52,801 INFO L430 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:54:52,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:54:52,801 INFO L82 PathProgramCache]: Analyzing trace with hash -625141291, now seen corresponding path program 112 times [2021-06-05 05:54:52,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:54:52,801 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472583794] [2021-06-05 05:54:52,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:54:52,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:54:53,087 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 8 proven. 160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:54:53,087 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:54:53,087 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472583794] [2021-06-05 05:54:53,088 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472583794] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:54:53,088 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749156463] [2021-06-05 05:54:53,088 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:54:53,118 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 05:54:53,118 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:54:53,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 66 conjunts are in the unsatisfiable core [2021-06-05 05:54:53,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:54:53,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:53,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:53,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:53,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:53,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:53,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:53,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:53,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:53,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:53,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:53,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:53,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:53,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:53,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:53,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:53,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:53,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:53,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:53,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:53,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:53,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:53,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:53,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:53,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:53,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:53,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:53,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:53,835 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:53,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:53,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:53,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:53,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:53,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:53,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:53,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:53,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:53,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:53,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:53,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:53,843 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:53,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:53,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:53,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:53,845 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:53,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:53,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:53,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:53,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:53,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:53,849 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:53,849 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 28 disjoint index pairs (out of 66 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 145 treesize of output 55 [2021-06-05 05:54:53,851 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:54:53,856 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:54:53,857 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:54:53,857 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:151, output treesize:7 [2021-06-05 05:54:53,867 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 8 proven. 160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:54:53,867 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1749156463] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:54:53,867 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:54:53,868 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 20] total 28 [2021-06-05 05:54:53,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422358237] [2021-06-05 05:54:53,868 INFO L462 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-06-05 05:54:53,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:54:53,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-06-05 05:54:53,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=722, Unknown=0, NotChecked=0, Total=812 [2021-06-05 05:54:53,868 INFO L87 Difference]: Start difference. First operand 21103 states and 51991 transitions. Second operand has 29 states, 29 states have (on average 3.310344827586207) internal successors, (96), 28 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:54:55,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:54:55,507 INFO L93 Difference]: Finished difference Result 30947 states and 76274 transitions. [2021-06-05 05:54:55,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-05 05:54:55,507 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.310344827586207) internal successors, (96), 28 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-06-05 05:54:55,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:54:55,540 INFO L225 Difference]: With dead ends: 30947 [2021-06-05 05:54:55,540 INFO L226 Difference]: Without dead ends: 30535 [2021-06-05 05:54:55,540 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 52 SyntacticMatches, 5 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 698 ImplicationChecksByTransitivity, 1318.9ms TimeCoverageRelationStatistics Valid=257, Invalid=2605, Unknown=0, NotChecked=0, Total=2862 [2021-06-05 05:54:55,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30535 states. [2021-06-05 05:54:55,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30535 to 22239. [2021-06-05 05:54:55,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22239 states, 22238 states have (on average 2.4656443924813383) internal successors, (54831), 22238 states have internal predecessors, (54831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:54:55,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22239 states to 22239 states and 54831 transitions. [2021-06-05 05:54:55,846 INFO L78 Accepts]: Start accepts. Automaton has 22239 states and 54831 transitions. Word has length 65 [2021-06-05 05:54:55,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:54:55,846 INFO L482 AbstractCegarLoop]: Abstraction has 22239 states and 54831 transitions. [2021-06-05 05:54:55,846 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 3.310344827586207) internal successors, (96), 28 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:54:55,846 INFO L276 IsEmpty]: Start isEmpty. Operand 22239 states and 54831 transitions. [2021-06-05 05:54:55,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-06-05 05:54:55,862 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:54:55,862 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:54:56,062 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 116 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable118 [2021-06-05 05:54:56,063 INFO L430 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:54:56,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:54:56,063 INFO L82 PathProgramCache]: Analyzing trace with hash 921879509, now seen corresponding path program 113 times [2021-06-05 05:54:56,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:54:56,063 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012053710] [2021-06-05 05:54:56,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:54:56,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:54:56,432 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 8 proven. 160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:54:56,432 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:54:56,433 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012053710] [2021-06-05 05:54:56,433 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012053710] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:54:56,433 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472110275] [2021-06-05 05:54:56,433 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:54:56,465 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-06-05 05:54:56,465 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:54:56,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 66 conjunts are in the unsatisfiable core [2021-06-05 05:54:56,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:54:57,220 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:57,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:57,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:57,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:57,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:57,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:57,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:57,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:57,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:57,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:57,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:57,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:57,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:57,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:57,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:57,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:57,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:57,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:57,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:57,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:57,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:57,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:57,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:57,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:57,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:57,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:57,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:57,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:57,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:57,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:57,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:57,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:57,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:57,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:57,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:57,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:57,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:57,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:57,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:57,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:57,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:57,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:57,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:57,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:57,248 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:57,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:57,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:57,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:54:57,251 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:57,251 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:54:57,251 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 28 disjoint index pairs (out of 66 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 145 treesize of output 55 [2021-06-05 05:54:57,253 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:54:57,258 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:54:57,259 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:54:57,259 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:151, output treesize:7 [2021-06-05 05:54:57,269 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 8 proven. 160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:54:57,269 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472110275] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:54:57,269 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:54:57,269 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 31 [2021-06-05 05:54:57,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592746893] [2021-06-05 05:54:57,269 INFO L462 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-06-05 05:54:57,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:54:57,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-06-05 05:54:57,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=866, Unknown=0, NotChecked=0, Total=992 [2021-06-05 05:54:57,269 INFO L87 Difference]: Start difference. First operand 22239 states and 54831 transitions. Second operand has 32 states, 32 states have (on average 3.0) internal successors, (96), 31 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:54:58,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:54:58,637 INFO L93 Difference]: Finished difference Result 34023 states and 84647 transitions. [2021-06-05 05:54:58,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-05 05:54:58,637 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.0) internal successors, (96), 31 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-06-05 05:54:58,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:54:58,675 INFO L225 Difference]: With dead ends: 34023 [2021-06-05 05:54:58,675 INFO L226 Difference]: Without dead ends: 33743 [2021-06-05 05:54:58,675 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 49 SyntacticMatches, 5 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 731 ImplicationChecksByTransitivity, 1437.1ms TimeCoverageRelationStatistics Valid=332, Invalid=2860, Unknown=0, NotChecked=0, Total=3192 [2021-06-05 05:54:58,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33743 states. [2021-06-05 05:54:58,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33743 to 22303. [2021-06-05 05:54:58,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22303 states, 22302 states have (on average 2.4657429826921353) internal successors, (54991), 22302 states have internal predecessors, (54991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:54:58,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22303 states to 22303 states and 54991 transitions. [2021-06-05 05:54:58,998 INFO L78 Accepts]: Start accepts. Automaton has 22303 states and 54991 transitions. Word has length 65 [2021-06-05 05:54:58,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:54:58,998 INFO L482 AbstractCegarLoop]: Abstraction has 22303 states and 54991 transitions. [2021-06-05 05:54:58,998 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 3.0) internal successors, (96), 31 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:54:58,998 INFO L276 IsEmpty]: Start isEmpty. Operand 22303 states and 54991 transitions. [2021-06-05 05:54:59,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-06-05 05:54:59,015 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:54:59,015 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:54:59,216 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,117 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:54:59,217 INFO L430 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:54:59,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:54:59,217 INFO L82 PathProgramCache]: Analyzing trace with hash -1503500843, now seen corresponding path program 114 times [2021-06-05 05:54:59,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:54:59,217 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757774170] [2021-06-05 05:54:59,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:54:59,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:54:59,570 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 8 proven. 160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:54:59,570 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:54:59,570 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757774170] [2021-06-05 05:54:59,570 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757774170] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:54:59,571 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943052725] [2021-06-05 05:54:59,571 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:54:59,603 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-06-05 05:54:59,603 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:54:59,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 66 conjunts are in the unsatisfiable core [2021-06-05 05:54:59,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:55:00,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:00,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:00,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:00,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:00,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:00,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:00,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:00,254 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:55:00,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:00,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:00,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:00,257 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:55:00,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:00,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:00,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:00,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:00,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:00,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:00,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:00,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:00,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:00,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:00,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:00,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:00,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:00,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:00,266 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:55:00,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:00,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:00,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:00,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:00,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:00,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:00,270 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:55:00,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:00,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:00,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:00,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:00,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:00,273 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 28 disjoint index pairs (out of 66 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 145 treesize of output 55 [2021-06-05 05:55:00,275 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:55:00,280 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:55:00,281 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:55:00,281 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:151, output treesize:7 [2021-06-05 05:55:00,290 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 8 proven. 160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:55:00,291 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [943052725] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:55:00,291 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:55:00,291 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 31 [2021-06-05 05:55:00,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934144550] [2021-06-05 05:55:00,291 INFO L462 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-06-05 05:55:00,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:55:00,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-06-05 05:55:00,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=866, Unknown=0, NotChecked=0, Total=992 [2021-06-05 05:55:00,291 INFO L87 Difference]: Start difference. First operand 22303 states and 54991 transitions. Second operand has 32 states, 32 states have (on average 3.0) internal successors, (96), 31 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:55:01,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:55:01,659 INFO L93 Difference]: Finished difference Result 29095 states and 71967 transitions. [2021-06-05 05:55:01,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 05:55:01,659 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.0) internal successors, (96), 31 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-06-05 05:55:01,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:55:01,688 INFO L225 Difference]: With dead ends: 29095 [2021-06-05 05:55:01,689 INFO L226 Difference]: Without dead ends: 29055 [2021-06-05 05:55:01,689 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 49 SyntacticMatches, 5 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 634 ImplicationChecksByTransitivity, 1337.0ms TimeCoverageRelationStatistics Valid=298, Invalid=2564, Unknown=0, NotChecked=0, Total=2862 [2021-06-05 05:55:01,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29055 states. [2021-06-05 05:55:01,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29055 to 22319. [2021-06-05 05:55:01,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22319 states, 22318 states have (on average 2.465767541894435) internal successors, (55031), 22318 states have internal predecessors, (55031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:55:01,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22319 states to 22319 states and 55031 transitions. [2021-06-05 05:55:01,985 INFO L78 Accepts]: Start accepts. Automaton has 22319 states and 55031 transitions. Word has length 65 [2021-06-05 05:55:01,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:55:01,986 INFO L482 AbstractCegarLoop]: Abstraction has 22319 states and 55031 transitions. [2021-06-05 05:55:01,986 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 3.0) internal successors, (96), 31 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:55:01,986 INFO L276 IsEmpty]: Start isEmpty. Operand 22319 states and 55031 transitions. [2021-06-05 05:55:02,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-06-05 05:55:02,003 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:55:02,003 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:55:02,203 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,118 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:55:02,204 INFO L430 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:55:02,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:55:02,204 INFO L82 PathProgramCache]: Analyzing trace with hash 363466709, now seen corresponding path program 115 times [2021-06-05 05:55:02,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:55:02,204 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380943879] [2021-06-05 05:55:02,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:55:02,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:55:02,598 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 8 proven. 160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:55:02,598 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:55:02,598 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380943879] [2021-06-05 05:55:02,598 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380943879] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:55:02,598 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064407938] [2021-06-05 05:55:02,598 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:55:02,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:55:02,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 66 conjunts are in the unsatisfiable core [2021-06-05 05:55:02,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:55:03,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:03,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:03,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:03,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:03,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:03,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:03,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:03,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:03,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:03,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:03,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:03,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:03,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:03,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:03,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:03,261 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:55:03,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:03,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:03,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:03,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:03,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:03,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:03,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:03,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:03,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:03,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:03,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:03,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:03,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:03,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:03,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:03,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:03,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:03,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:03,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:03,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:03,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:03,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:03,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:03,276 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:55:03,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:03,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:03,278 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:55:03,278 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 11 select indices, 11 select index equivalence classes, 28 disjoint index pairs (out of 55 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 145 treesize of output 55 [2021-06-05 05:55:03,279 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:55:03,284 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:55:03,285 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:55:03,285 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:151, output treesize:7 [2021-06-05 05:55:03,295 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 8 proven. 160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:55:03,295 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064407938] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:55:03,295 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:55:03,295 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 30 [2021-06-05 05:55:03,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621904669] [2021-06-05 05:55:03,295 INFO L462 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-06-05 05:55:03,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:55:03,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-06-05 05:55:03,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=808, Unknown=0, NotChecked=0, Total=930 [2021-06-05 05:55:03,296 INFO L87 Difference]: Start difference. First operand 22319 states and 55031 transitions. Second operand has 31 states, 31 states have (on average 2.967741935483871) internal successors, (92), 30 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:55:05,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:55:05,130 INFO L93 Difference]: Finished difference Result 32175 states and 79699 transitions. [2021-06-05 05:55:05,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 05:55:05,130 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.967741935483871) internal successors, (92), 30 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-06-05 05:55:05,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:55:05,168 INFO L225 Difference]: With dead ends: 32175 [2021-06-05 05:55:05,168 INFO L226 Difference]: Without dead ends: 32111 [2021-06-05 05:55:05,168 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 49 SyntacticMatches, 6 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 650 ImplicationChecksByTransitivity, 1416.1ms TimeCoverageRelationStatistics Valid=318, Invalid=2652, Unknown=0, NotChecked=0, Total=2970 [2021-06-05 05:55:05,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32111 states. [2021-06-05 05:55:05,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32111 to 22511. [2021-06-05 05:55:05,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22511 states, 22510 states have (on average 2.4660595290981786) internal successors, (55511), 22510 states have internal predecessors, (55511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:55:05,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22511 states to 22511 states and 55511 transitions. [2021-06-05 05:55:05,551 INFO L78 Accepts]: Start accepts. Automaton has 22511 states and 55511 transitions. Word has length 65 [2021-06-05 05:55:05,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:55:05,552 INFO L482 AbstractCegarLoop]: Abstraction has 22511 states and 55511 transitions. [2021-06-05 05:55:05,552 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 2.967741935483871) internal successors, (92), 30 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:55:05,552 INFO L276 IsEmpty]: Start isEmpty. Operand 22511 states and 55511 transitions. [2021-06-05 05:55:05,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-06-05 05:55:05,570 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:55:05,570 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:55:05,771 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable121 [2021-06-05 05:55:05,771 INFO L430 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:55:05,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:55:05,771 INFO L82 PathProgramCache]: Analyzing trace with hash -1821229611, now seen corresponding path program 116 times [2021-06-05 05:55:05,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:55:05,771 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764934479] [2021-06-05 05:55:05,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:55:05,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:55:06,130 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 8 proven. 160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:55:06,131 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:55:06,131 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764934479] [2021-06-05 05:55:06,131 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764934479] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:55:06,131 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741231947] [2021-06-05 05:55:06,131 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:55:06,161 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 05:55:06,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:55:06,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 66 conjunts are in the unsatisfiable core [2021-06-05 05:55:06,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:55:06,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:06,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:06,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:06,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:06,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:06,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:06,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:06,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:06,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:06,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:06,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:06,731 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:55:06,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:06,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:06,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:06,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:06,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:06,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:06,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:06,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:06,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:06,737 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:55:06,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:06,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:06,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:06,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:06,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:06,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:06,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:06,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:06,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:06,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:06,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:06,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:06,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:06,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:06,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:06,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:06,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:06,748 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:55:06,749 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 11 select indices, 11 select index equivalence classes, 28 disjoint index pairs (out of 55 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 145 treesize of output 55 [2021-06-05 05:55:06,750 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:55:06,755 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:55:06,756 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:55:06,756 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:151, output treesize:7 [2021-06-05 05:55:06,766 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 8 proven. 160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:55:06,766 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [741231947] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:55:06,766 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:55:06,766 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 30 [2021-06-05 05:55:06,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557425512] [2021-06-05 05:55:06,766 INFO L462 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-06-05 05:55:06,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:55:06,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-06-05 05:55:06,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=819, Unknown=0, NotChecked=0, Total=930 [2021-06-05 05:55:06,767 INFO L87 Difference]: Start difference. First operand 22511 states and 55511 transitions. Second operand has 31 states, 31 states have (on average 2.903225806451613) internal successors, (90), 30 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:55:08,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:55:08,497 INFO L93 Difference]: Finished difference Result 31275 states and 77190 transitions. [2021-06-05 05:55:08,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-05 05:55:08,498 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.903225806451613) internal successors, (90), 30 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-06-05 05:55:08,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:55:08,531 INFO L225 Difference]: With dead ends: 31275 [2021-06-05 05:55:08,531 INFO L226 Difference]: Without dead ends: 30823 [2021-06-05 05:55:08,532 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 49 SyntacticMatches, 6 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 857 ImplicationChecksByTransitivity, 1606.9ms TimeCoverageRelationStatistics Valid=336, Invalid=3086, Unknown=0, NotChecked=0, Total=3422 [2021-06-05 05:55:08,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30823 states. [2021-06-05 05:55:08,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30823 to 25295. [2021-06-05 05:55:08,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25295 states, 25294 states have (on average 2.4637068079386415) internal successors, (62317), 25294 states have internal predecessors, (62317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:55:08,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25295 states to 25295 states and 62317 transitions. [2021-06-05 05:55:08,996 INFO L78 Accepts]: Start accepts. Automaton has 25295 states and 62317 transitions. Word has length 65 [2021-06-05 05:55:08,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:55:08,997 INFO L482 AbstractCegarLoop]: Abstraction has 25295 states and 62317 transitions. [2021-06-05 05:55:08,997 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 2.903225806451613) internal successors, (90), 30 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:55:08,997 INFO L276 IsEmpty]: Start isEmpty. Operand 25295 states and 62317 transitions. [2021-06-05 05:55:09,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-06-05 05:55:09,016 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:55:09,016 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:55:09,217 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 120 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2021-06-05 05:55:09,217 INFO L430 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:55:09,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:55:09,217 INFO L82 PathProgramCache]: Analyzing trace with hash -243267115, now seen corresponding path program 117 times [2021-06-05 05:55:09,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:55:09,218 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180037585] [2021-06-05 05:55:09,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:55:09,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:55:09,489 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 8 proven. 153 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-06-05 05:55:09,489 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:55:09,489 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180037585] [2021-06-05 05:55:09,489 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180037585] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:55:09,489 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [482867311] [2021-06-05 05:55:09,489 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:55:09,524 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-06-05 05:55:09,524 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:55:09,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 66 conjunts are in the unsatisfiable core [2021-06-05 05:55:09,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:55:10,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:10,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:10,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:10,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:10,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:10,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:10,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:10,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:10,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:10,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:10,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:10,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:10,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:10,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:10,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:10,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:10,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:10,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:10,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:10,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:10,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:10,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:10,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:10,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:10,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:10,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:10,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:10,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:10,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:10,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:10,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:10,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:10,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:10,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:10,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:10,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:10,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:10,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:10,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:10,122 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:55:10,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:10,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:10,123 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:55:10,124 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 28 disjoint index pairs (out of 45 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 145 treesize of output 55 [2021-06-05 05:55:10,125 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:55:10,131 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:55:10,132 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:55:10,132 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:151, output treesize:7 [2021-06-05 05:55:10,143 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 15 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:55:10,143 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [482867311] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:55:10,143 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:55:10,143 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 20] total 25 [2021-06-05 05:55:10,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058515038] [2021-06-05 05:55:10,143 INFO L462 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-06-05 05:55:10,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:55:10,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-06-05 05:55:10,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=564, Unknown=0, NotChecked=0, Total=650 [2021-06-05 05:55:10,144 INFO L87 Difference]: Start difference. First operand 25295 states and 62317 transitions. Second operand has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 25 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:55:12,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:55:12,281 INFO L93 Difference]: Finished difference Result 32375 states and 79952 transitions. [2021-06-05 05:55:12,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-05 05:55:12,281 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 25 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-06-05 05:55:12,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:55:12,318 INFO L225 Difference]: With dead ends: 32375 [2021-06-05 05:55:12,318 INFO L226 Difference]: Without dead ends: 31959 [2021-06-05 05:55:12,318 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 53 SyntacticMatches, 7 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 775 ImplicationChecksByTransitivity, 1759.1ms TimeCoverageRelationStatistics Valid=338, Invalid=2742, Unknown=0, NotChecked=0, Total=3080 [2021-06-05 05:55:12,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31959 states. [2021-06-05 05:55:12,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31959 to 25695. [2021-06-05 05:55:12,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25695 states, 25694 states have (on average 2.4642718144313847) internal successors, (63317), 25694 states have internal predecessors, (63317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:55:12,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25695 states to 25695 states and 63317 transitions. [2021-06-05 05:55:12,684 INFO L78 Accepts]: Start accepts. Automaton has 25695 states and 63317 transitions. Word has length 65 [2021-06-05 05:55:12,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:55:12,684 INFO L482 AbstractCegarLoop]: Abstraction has 25695 states and 63317 transitions. [2021-06-05 05:55:12,684 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 25 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:55:12,684 INFO L276 IsEmpty]: Start isEmpty. Operand 25695 states and 63317 transitions. [2021-06-05 05:55:12,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-06-05 05:55:12,703 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:55:12,703 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:55:12,904 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123,121 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:55:12,905 INFO L430 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:55:12,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:55:12,905 INFO L82 PathProgramCache]: Analyzing trace with hash 555299797, now seen corresponding path program 118 times [2021-06-05 05:55:12,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:55:12,905 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379360836] [2021-06-05 05:55:12,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:55:12,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:55:13,257 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 8 proven. 157 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-06-05 05:55:13,257 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:55:13,257 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379360836] [2021-06-05 05:55:13,257 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379360836] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:55:13,257 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100050651] [2021-06-05 05:55:13,257 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:55:13,295 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 05:55:13,296 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:55:13,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 66 conjunts are in the unsatisfiable core [2021-06-05 05:55:13,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:55:13,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:13,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:13,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:13,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:13,969 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:55:13,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:13,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:13,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:13,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:13,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:13,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:13,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:13,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:13,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:13,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:13,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:13,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:13,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:13,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:13,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:13,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:13,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:13,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:13,981 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:55:13,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:13,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:13,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:13,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:13,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:13,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:13,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:13,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:13,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:13,987 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 28 disjoint index pairs (out of 45 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 145 treesize of output 55 [2021-06-05 05:55:13,988 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:55:13,993 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:55:13,994 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:55:13,994 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:151, output treesize:7 [2021-06-05 05:55:14,004 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 11 proven. 157 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:55:14,004 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [100050651] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:55:14,004 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:55:14,004 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 20] total 26 [2021-06-05 05:55:14,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774909911] [2021-06-05 05:55:14,004 INFO L462 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-06-05 05:55:14,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:55:14,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-06-05 05:55:14,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=614, Unknown=0, NotChecked=0, Total=702 [2021-06-05 05:55:14,005 INFO L87 Difference]: Start difference. First operand 25695 states and 63317 transitions. Second operand has 27 states, 27 states have (on average 3.185185185185185) internal successors, (86), 26 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:55:16,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:55:16,969 INFO L93 Difference]: Finished difference Result 34791 states and 85810 transitions. [2021-06-05 05:55:16,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-05 05:55:16,969 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.185185185185185) internal successors, (86), 26 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-06-05 05:55:16,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:55:17,006 INFO L225 Difference]: With dead ends: 34791 [2021-06-05 05:55:17,007 INFO L226 Difference]: Without dead ends: 34231 [2021-06-05 05:55:17,007 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 52 SyntacticMatches, 7 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 886 ImplicationChecksByTransitivity, 2101.6ms TimeCoverageRelationStatistics Valid=361, Invalid=3179, Unknown=0, NotChecked=0, Total=3540 [2021-06-05 05:55:17,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34231 states. [2021-06-05 05:55:17,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34231 to 25919. [2021-06-05 05:55:17,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25919 states, 25918 states have (on average 2.4645806003549655) internal successors, (63877), 25918 states have internal predecessors, (63877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:55:17,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25919 states to 25919 states and 63877 transitions. [2021-06-05 05:55:17,367 INFO L78 Accepts]: Start accepts. Automaton has 25919 states and 63877 transitions. Word has length 65 [2021-06-05 05:55:17,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:55:17,367 INFO L482 AbstractCegarLoop]: Abstraction has 25919 states and 63877 transitions. [2021-06-05 05:55:17,368 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 3.185185185185185) internal successors, (86), 26 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:55:17,368 INFO L276 IsEmpty]: Start isEmpty. Operand 25919 states and 63877 transitions. [2021-06-05 05:55:17,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-06-05 05:55:17,386 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:55:17,386 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:55:17,587 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 122 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2021-06-05 05:55:17,587 INFO L430 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:55:17,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:55:17,587 INFO L82 PathProgramCache]: Analyzing trace with hash 685620181, now seen corresponding path program 119 times [2021-06-05 05:55:17,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:55:17,587 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767273929] [2021-06-05 05:55:17,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:55:17,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:55:17,859 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 8 proven. 156 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-06-05 05:55:17,859 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:55:17,859 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767273929] [2021-06-05 05:55:17,859 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767273929] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:55:17,859 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074488905] [2021-06-05 05:55:17,859 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 123 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 123 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:55:17,948 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-06-05 05:55:17,948 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:55:17,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 66 conjunts are in the unsatisfiable core [2021-06-05 05:55:17,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:55:18,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:18,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:18,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:18,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:18,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:18,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:18,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:18,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:18,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:18,499 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:55:18,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:18,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:18,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:18,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:18,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:18,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:18,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:18,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:18,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:18,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:18,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:18,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:18,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:18,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:18,508 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:55:18,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:18,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:18,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:18,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:18,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:18,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:18,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:18,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:18,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:18,515 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 28 disjoint index pairs (out of 45 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 145 treesize of output 55 [2021-06-05 05:55:18,516 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:55:18,521 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:55:18,523 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:55:18,523 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:151, output treesize:7 [2021-06-05 05:55:18,533 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 12 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:55:18,534 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1074488905] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:55:18,534 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:55:18,534 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 20] total 25 [2021-06-05 05:55:18,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373702361] [2021-06-05 05:55:18,534 INFO L462 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-06-05 05:55:18,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:55:18,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-06-05 05:55:18,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=572, Unknown=0, NotChecked=0, Total=650 [2021-06-05 05:55:18,535 INFO L87 Difference]: Start difference. First operand 25919 states and 63877 transitions. Second operand has 26 states, 26 states have (on average 3.230769230769231) internal successors, (84), 25 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:55:19,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:55:19,991 INFO L93 Difference]: Finished difference Result 33819 states and 83530 transitions. [2021-06-05 05:55:19,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-05 05:55:19,991 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.230769230769231) internal successors, (84), 25 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-06-05 05:55:19,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:55:20,031 INFO L225 Difference]: With dead ends: 33819 [2021-06-05 05:55:20,031 INFO L226 Difference]: Without dead ends: 33719 [2021-06-05 05:55:20,032 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 53 SyntacticMatches, 7 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 541 ImplicationChecksByTransitivity, 1147.8ms TimeCoverageRelationStatistics Valid=221, Invalid=2035, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 05:55:20,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33719 states. [2021-06-05 05:55:20,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33719 to 26959. [2021-06-05 05:55:20,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26959 states, 26958 states have (on average 2.4659470287113288) internal successors, (66477), 26958 states have internal predecessors, (66477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:55:20,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26959 states to 26959 states and 66477 transitions. [2021-06-05 05:55:20,409 INFO L78 Accepts]: Start accepts. Automaton has 26959 states and 66477 transitions. Word has length 65 [2021-06-05 05:55:20,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:55:20,409 INFO L482 AbstractCegarLoop]: Abstraction has 26959 states and 66477 transitions. [2021-06-05 05:55:20,409 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 3.230769230769231) internal successors, (84), 25 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:55:20,410 INFO L276 IsEmpty]: Start isEmpty. Operand 26959 states and 66477 transitions. [2021-06-05 05:55:20,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-06-05 05:55:20,428 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:55:20,428 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:55:20,629 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125,123 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:55:20,629 INFO L430 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:55:20,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:55:20,629 INFO L82 PathProgramCache]: Analyzing trace with hash 869393877, now seen corresponding path program 120 times [2021-06-05 05:55:20,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:55:20,629 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616459768] [2021-06-05 05:55:20,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:55:20,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:55:20,928 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 8 proven. 160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:55:20,928 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:55:20,928 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616459768] [2021-06-05 05:55:20,928 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616459768] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:55:20,929 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [427797651] [2021-06-05 05:55:20,929 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 124 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 124 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:55:20,961 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-06-05 05:55:20,961 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:55:20,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 68 conjunts are in the unsatisfiable core [2021-06-05 05:55:20,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:55:21,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:21,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:21,502 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:55:21,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:21,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:21,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:21,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:21,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:21,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:21,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:21,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:21,508 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:55:21,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:21,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:21,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:21,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:21,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:21,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:21,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:21,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:21,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:21,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:21,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:21,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:21,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:21,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:21,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:21,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:21,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:21,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:21,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:21,520 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 28 disjoint index pairs (out of 45 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 145 treesize of output 55 [2021-06-05 05:55:21,522 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:55:21,528 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:55:21,529 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:55:21,529 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:151, output treesize:7 [2021-06-05 05:55:21,539 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 8 proven. 160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:55:21,539 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [427797651] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:55:21,539 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:55:21,539 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 20] total 26 [2021-06-05 05:55:21,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652690948] [2021-06-05 05:55:21,539 INFO L462 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-06-05 05:55:21,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:55:21,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-06-05 05:55:21,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=621, Unknown=0, NotChecked=0, Total=702 [2021-06-05 05:55:21,540 INFO L87 Difference]: Start difference. First operand 26959 states and 66477 transitions. Second operand has 27 states, 27 states have (on average 3.259259259259259) internal successors, (88), 26 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:55:23,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:55:23,298 INFO L93 Difference]: Finished difference Result 36567 states and 90236 transitions. [2021-06-05 05:55:23,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-05 05:55:23,298 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.259259259259259) internal successors, (88), 26 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-06-05 05:55:23,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:55:23,338 INFO L225 Difference]: With dead ends: 36567 [2021-06-05 05:55:23,338 INFO L226 Difference]: Without dead ends: 36183 [2021-06-05 05:55:23,338 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 52 SyntacticMatches, 7 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 572 ImplicationChecksByTransitivity, 1222.4ms TimeCoverageRelationStatistics Valid=230, Invalid=2220, Unknown=0, NotChecked=0, Total=2450 [2021-06-05 05:55:23,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36183 states. [2021-06-05 05:55:23,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36183 to 28527. [2021-06-05 05:55:23,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28527 states, 28526 states have (on average 2.4672579401247985) internal successors, (70381), 28526 states have internal predecessors, (70381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:55:23,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28527 states to 28527 states and 70381 transitions. [2021-06-05 05:55:23,737 INFO L78 Accepts]: Start accepts. Automaton has 28527 states and 70381 transitions. Word has length 65 [2021-06-05 05:55:23,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:55:23,737 INFO L482 AbstractCegarLoop]: Abstraction has 28527 states and 70381 transitions. [2021-06-05 05:55:23,737 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 3.259259259259259) internal successors, (88), 26 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:55:23,737 INFO L276 IsEmpty]: Start isEmpty. Operand 28527 states and 70381 transitions. [2021-06-05 05:55:23,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-06-05 05:55:23,757 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:55:23,757 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:55:23,960 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 124 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable126 [2021-06-05 05:55:23,961 INFO L430 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:55:23,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:55:23,961 INFO L82 PathProgramCache]: Analyzing trace with hash -1137333803, now seen corresponding path program 121 times [2021-06-05 05:55:23,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:55:23,961 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456591015] [2021-06-05 05:55:23,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:55:23,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:55:24,278 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 8 proven. 160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:55:24,279 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:55:24,279 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456591015] [2021-06-05 05:55:24,279 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456591015] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:55:24,279 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546160158] [2021-06-05 05:55:24,279 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:55:24,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:55:24,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 66 conjunts are in the unsatisfiable core [2021-06-05 05:55:24,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:55:24,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:24,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:24,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:24,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:24,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:24,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:24,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:24,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:24,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:24,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:24,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:24,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:24,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:24,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:24,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:24,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:24,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:24,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:24,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:24,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:24,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:24,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:24,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:24,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:24,876 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:55:24,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:24,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:24,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:24,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:24,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:24,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:24,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:24,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:24,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:24,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:24,882 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:55:24,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:24,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:24,884 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 28 disjoint index pairs (out of 45 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 145 treesize of output 55 [2021-06-05 05:55:24,885 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:55:24,890 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:55:24,891 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:55:24,891 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:151, output treesize:7 [2021-06-05 05:55:24,901 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 8 proven. 160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:55:24,901 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1546160158] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:55:24,901 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:55:24,901 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 20] total 27 [2021-06-05 05:55:24,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954221817] [2021-06-05 05:55:24,901 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-06-05 05:55:24,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:55:24,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-06-05 05:55:24,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=659, Unknown=0, NotChecked=0, Total=756 [2021-06-05 05:55:24,902 INFO L87 Difference]: Start difference. First operand 28527 states and 70381 transitions. Second operand has 28 states, 28 states have (on average 3.142857142857143) internal successors, (88), 27 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:55:26,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:55:26,533 INFO L93 Difference]: Finished difference Result 41391 states and 102480 transitions. [2021-06-05 05:55:26,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-05 05:55:26,533 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.142857142857143) internal successors, (88), 27 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-06-05 05:55:26,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:55:26,579 INFO L225 Difference]: With dead ends: 41391 [2021-06-05 05:55:26,579 INFO L226 Difference]: Without dead ends: 41303 [2021-06-05 05:55:26,579 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 51 SyntacticMatches, 7 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 616 ImplicationChecksByTransitivity, 1296.9ms TimeCoverageRelationStatistics Valid=285, Invalid=2471, Unknown=0, NotChecked=0, Total=2756 [2021-06-05 05:55:26,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41303 states. [2021-06-05 05:55:27,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41303 to 28047. [2021-06-05 05:55:27,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28047 states, 28046 states have (on average 2.4666975682806815) internal successors, (69181), 28046 states have internal predecessors, (69181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:55:27,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28047 states to 28047 states and 69181 transitions. [2021-06-05 05:55:27,080 INFO L78 Accepts]: Start accepts. Automaton has 28047 states and 69181 transitions. Word has length 65 [2021-06-05 05:55:27,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:55:27,080 INFO L482 AbstractCegarLoop]: Abstraction has 28047 states and 69181 transitions. [2021-06-05 05:55:27,080 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 3.142857142857143) internal successors, (88), 27 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:55:27,080 INFO L276 IsEmpty]: Start isEmpty. Operand 28047 states and 69181 transitions. [2021-06-05 05:55:27,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-06-05 05:55:27,100 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:55:27,100 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:55:27,304 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127,125 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:55:27,305 INFO L430 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:55:27,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:55:27,305 INFO L82 PathProgramCache]: Analyzing trace with hash -8965675, now seen corresponding path program 122 times [2021-06-05 05:55:27,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:55:27,305 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917455058] [2021-06-05 05:55:27,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:55:27,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:55:27,674 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 8 proven. 160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:55:27,674 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:55:27,674 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917455058] [2021-06-05 05:55:27,674 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917455058] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:55:27,674 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133377856] [2021-06-05 05:55:27,674 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 126 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 126 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:55:27,704 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 05:55:27,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:55:27,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 66 conjunts are in the unsatisfiable core [2021-06-05 05:55:27,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:55:28,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:28,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:28,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:28,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:28,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:28,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:28,293 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:55:28,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:28,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:28,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:28,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:28,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:28,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:28,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:28,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:28,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:28,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:28,300 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:55:28,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:28,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:28,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:28,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:28,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:28,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:28,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:28,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:28,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:28,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:28,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:28,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:28,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:28,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:28,309 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 28 disjoint index pairs (out of 45 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 145 treesize of output 55 [2021-06-05 05:55:28,310 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:55:28,316 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:55:28,317 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:55:28,317 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:151, output treesize:7 [2021-06-05 05:55:28,327 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 8 proven. 160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:55:28,327 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133377856] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:55:28,327 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:55:28,327 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 29 [2021-06-05 05:55:28,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807438253] [2021-06-05 05:55:28,327 INFO L462 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-06-05 05:55:28,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:55:28,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-06-05 05:55:28,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=751, Unknown=0, NotChecked=0, Total=870 [2021-06-05 05:55:28,328 INFO L87 Difference]: Start difference. First operand 28047 states and 69181 transitions. Second operand has 30 states, 30 states have (on average 2.933333333333333) internal successors, (88), 29 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:55:29,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:55:29,678 INFO L93 Difference]: Finished difference Result 39047 states and 96941 transitions. [2021-06-05 05:55:29,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 05:55:29,679 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.933333333333333) internal successors, (88), 29 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-06-05 05:55:29,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:55:29,720 INFO L225 Difference]: With dead ends: 39047 [2021-06-05 05:55:29,720 INFO L226 Difference]: Without dead ends: 38863 [2021-06-05 05:55:29,721 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 49 SyntacticMatches, 7 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 630 ImplicationChecksByTransitivity, 1363.6ms TimeCoverageRelationStatistics Valid=318, Invalid=2544, Unknown=0, NotChecked=0, Total=2862 [2021-06-05 05:55:29,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38863 states. [2021-06-05 05:55:30,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38863 to 28127. [2021-06-05 05:55:30,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28127 states, 28126 states have (on average 2.466792291829624) internal successors, (69381), 28126 states have internal predecessors, (69381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:55:30,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28127 states to 28127 states and 69381 transitions. [2021-06-05 05:55:30,193 INFO L78 Accepts]: Start accepts. Automaton has 28127 states and 69381 transitions. Word has length 65 [2021-06-05 05:55:30,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:55:30,193 INFO L482 AbstractCegarLoop]: Abstraction has 28127 states and 69381 transitions. [2021-06-05 05:55:30,193 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 2.933333333333333) internal successors, (88), 29 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:55:30,193 INFO L276 IsEmpty]: Start isEmpty. Operand 28127 states and 69381 transitions. [2021-06-05 05:55:30,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-06-05 05:55:30,213 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:55:30,213 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:55:30,413 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 126 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable128 [2021-06-05 05:55:30,413 INFO L430 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:55:30,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:55:30,414 INFO L82 PathProgramCache]: Analyzing trace with hash 1382256597, now seen corresponding path program 123 times [2021-06-05 05:55:30,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:55:30,414 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339823218] [2021-06-05 05:55:30,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:55:30,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:55:30,797 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 8 proven. 160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:55:30,797 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:55:30,798 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339823218] [2021-06-05 05:55:30,798 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339823218] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:55:30,798 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222742619] [2021-06-05 05:55:30,798 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 127 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 127 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:55:30,859 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-06-05 05:55:30,859 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:55:30,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 67 conjunts are in the unsatisfiable core [2021-06-05 05:55:30,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:55:31,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:31,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:31,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:31,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:31,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:31,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:31,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:31,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:31,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:31,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:31,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:31,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:31,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:31,634 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:55:31,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:31,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:31,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:31,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:31,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:31,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:31,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:31,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:31,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:31,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:31,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:31,642 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:55:31,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:31,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:31,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:31,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:31,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:31,645 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:55:31,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:31,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:31,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:31,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:31,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:31,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:31,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:31,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:31,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:31,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:31,652 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:55:31,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:31,654 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 28 disjoint index pairs (out of 66 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 139 treesize of output 55 [2021-06-05 05:55:31,655 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:55:31,668 INFO L628 ElimStorePlain]: treesize reduction 5, result has 81.5 percent of original size [2021-06-05 05:55:31,670 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:55:31,670 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:159, output treesize:7 [2021-06-05 05:55:31,680 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 8 proven. 160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:55:31,680 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1222742619] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:55:31,680 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:55:31,680 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 20] total 25 [2021-06-05 05:55:31,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746781706] [2021-06-05 05:55:31,680 INFO L462 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-06-05 05:55:31,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:55:31,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-06-05 05:55:31,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=581, Unknown=0, NotChecked=0, Total=650 [2021-06-05 05:55:31,681 INFO L87 Difference]: Start difference. First operand 28127 states and 69381 transitions. Second operand has 26 states, 26 states have (on average 3.230769230769231) internal successors, (84), 25 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:55:34,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:55:34,634 INFO L93 Difference]: Finished difference Result 35719 states and 88144 transitions. [2021-06-05 05:55:34,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 05:55:34,635 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.230769230769231) internal successors, (84), 25 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-06-05 05:55:34,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:55:34,676 INFO L225 Difference]: With dead ends: 35719 [2021-06-05 05:55:34,676 INFO L226 Difference]: Without dead ends: 35367 [2021-06-05 05:55:34,676 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 52 SyntacticMatches, 8 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 399 ImplicationChecksByTransitivity, 1667.1ms TimeCoverageRelationStatistics Valid=205, Invalid=1957, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 05:55:34,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35367 states. [2021-06-05 05:55:35,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35367 to 29039. [2021-06-05 05:55:35,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29039 states, 29038 states have (on average 2.467284248226462) internal successors, (71645), 29038 states have internal predecessors, (71645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:55:35,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29039 states to 29039 states and 71645 transitions. [2021-06-05 05:55:35,195 INFO L78 Accepts]: Start accepts. Automaton has 29039 states and 71645 transitions. Word has length 65 [2021-06-05 05:55:35,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:55:35,195 INFO L482 AbstractCegarLoop]: Abstraction has 29039 states and 71645 transitions. [2021-06-05 05:55:35,195 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 3.230769230769231) internal successors, (84), 25 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:55:35,195 INFO L276 IsEmpty]: Start isEmpty. Operand 29039 states and 71645 transitions. [2021-06-05 05:55:35,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-06-05 05:55:35,222 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:55:35,222 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:55:35,423 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 127 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable129 [2021-06-05 05:55:35,423 INFO L430 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:55:35,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:55:35,424 INFO L82 PathProgramCache]: Analyzing trace with hash -624471083, now seen corresponding path program 124 times [2021-06-05 05:55:35,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:55:35,424 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61281629] [2021-06-05 05:55:35,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:55:35,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:55:35,766 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 8 proven. 160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:55:35,766 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:55:35,767 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61281629] [2021-06-05 05:55:35,767 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61281629] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:55:35,767 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [452096831] [2021-06-05 05:55:35,767 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 128 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 128 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:55:35,800 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 05:55:35,800 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:55:35,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 66 conjunts are in the unsatisfiable core [2021-06-05 05:55:35,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:55:36,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:36,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:36,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:36,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:36,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:36,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:36,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:36,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:36,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:36,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:36,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:36,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:36,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:36,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:36,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:36,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:36,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:36,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:36,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:36,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:36,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:36,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:36,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:36,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:36,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:36,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:36,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:36,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:36,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:36,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:36,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:36,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:36,400 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:55:36,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:36,401 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 28 disjoint index pairs (out of 36 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 145 treesize of output 55 [2021-06-05 05:55:36,403 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:55:36,408 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:55:36,409 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:55:36,409 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:151, output treesize:7 [2021-06-05 05:55:36,420 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 8 proven. 160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:55:36,420 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [452096831] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:55:36,420 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:55:36,420 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 20] total 26 [2021-06-05 05:55:36,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388166399] [2021-06-05 05:55:36,421 INFO L462 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-06-05 05:55:36,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:55:36,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-06-05 05:55:36,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=610, Unknown=0, NotChecked=0, Total=702 [2021-06-05 05:55:36,421 INFO L87 Difference]: Start difference. First operand 29039 states and 71645 transitions. Second operand has 27 states, 27 states have (on average 3.111111111111111) internal successors, (84), 26 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:55:37,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:55:37,744 INFO L93 Difference]: Finished difference Result 40703 states and 100802 transitions. [2021-06-05 05:55:37,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-05 05:55:37,744 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.111111111111111) internal successors, (84), 26 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-06-05 05:55:37,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:55:37,790 INFO L225 Difference]: With dead ends: 40703 [2021-06-05 05:55:37,791 INFO L226 Difference]: Without dead ends: 40615 [2021-06-05 05:55:37,791 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 51 SyntacticMatches, 8 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 530 ImplicationChecksByTransitivity, 1291.8ms TimeCoverageRelationStatistics Valid=261, Invalid=2189, Unknown=0, NotChecked=0, Total=2450 [2021-06-05 05:55:37,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40615 states. [2021-06-05 05:55:38,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40615 to 28943. [2021-06-05 05:55:38,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28943 states, 28942 states have (on average 2.4671757307718885) internal successors, (71405), 28942 states have internal predecessors, (71405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:55:38,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28943 states to 28943 states and 71405 transitions. [2021-06-05 05:55:38,225 INFO L78 Accepts]: Start accepts. Automaton has 28943 states and 71405 transitions. Word has length 65 [2021-06-05 05:55:38,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:55:38,225 INFO L482 AbstractCegarLoop]: Abstraction has 28943 states and 71405 transitions. [2021-06-05 05:55:38,225 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 3.111111111111111) internal successors, (84), 26 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:55:38,225 INFO L276 IsEmpty]: Start isEmpty. Operand 28943 states and 71405 transitions. [2021-06-05 05:55:38,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-06-05 05:55:38,391 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:55:38,391 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:55:38,591 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,128 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:55:38,591 INFO L430 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:55:38,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:55:38,592 INFO L82 PathProgramCache]: Analyzing trace with hash 1135155157, now seen corresponding path program 125 times [2021-06-05 05:55:38,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:55:38,592 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151463319] [2021-06-05 05:55:38,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:55:38,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:55:38,960 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2021-06-05 05:55:39,030 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 8 proven. 160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:55:39,030 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:55:39,030 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151463319] [2021-06-05 05:55:39,031 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151463319] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:55:39,031 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [188952817] [2021-06-05 05:55:39,031 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 129 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 129 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:55:39,070 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-06-05 05:55:39,070 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:55:39,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 65 conjunts are in the unsatisfiable core [2021-06-05 05:55:39,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:55:48,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:48,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:48,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:48,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:48,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:48,388 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:55:48,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:48,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:48,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:48,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:48,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:48,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:48,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:48,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:48,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:48,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:48,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:48,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:48,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:48,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:48,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:48,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:48,399 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:55:48,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:48,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:48,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:48,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:48,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:48,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:48,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:48,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:48,404 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:55:48,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:48,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:48,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:48,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:48,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:48,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:48,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:48,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:48,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:48,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:48,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:48,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:48,413 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:55:48,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:48,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:48,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:48,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:48,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:48,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:48,417 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:55:48,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:48,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:48,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:48,420 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:55:48,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:48,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:48,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:48,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:48,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:48,424 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:55:48,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:55:48,425 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:55:48,426 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 16 select indices, 16 select index equivalence classes, 28 disjoint index pairs (out of 120 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 100 treesize of output 44 [2021-06-05 05:55:48,427 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:55:48,434 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:55:48,435 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:55:48,435 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:118, output treesize:3 [2021-06-05 05:55:48,462 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 8 proven. 160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:55:48,462 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [188952817] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:55:48,462 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:55:48,462 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20] total 36 [2021-06-05 05:55:48,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198418153] [2021-06-05 05:55:48,463 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-06-05 05:55:48,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:55:48,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-06-05 05:55:48,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=1208, Unknown=4, NotChecked=0, Total=1332 [2021-06-05 05:55:48,463 INFO L87 Difference]: Start difference. First operand 28943 states and 71405 transitions. Second operand has 37 states, 37 states have (on average 3.2432432432432434) internal successors, (120), 36 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:56:31,418 WARN L205 SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 86 [2021-06-05 05:57:03,707 WARN L205 SmtUtils]: Spent 2.12 s on a formula simplification. DAG size of input: 90 DAG size of output: 81 [2021-06-05 05:57:14,029 WARN L205 SmtUtils]: Spent 2.09 s on a formula simplification. DAG size of input: 89 DAG size of output: 80 [2021-06-05 05:58:14,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:58:14,707 INFO L93 Difference]: Finished difference Result 45435 states and 112338 transitions. [2021-06-05 05:58:14,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-06-05 05:58:14,708 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.2432432432432434) internal successors, (120), 36 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-06-05 05:58:14,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:58:14,759 INFO L225 Difference]: With dead ends: 45435 [2021-06-05 05:58:14,759 INFO L226 Difference]: Without dead ends: 44727 [2021-06-05 05:58:14,762 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2478 ImplicationChecksByTransitivity, 62129.4ms TimeCoverageRelationStatistics Valid=730, Invalid=8954, Unknown=18, NotChecked=0, Total=9702 [2021-06-05 05:58:14,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44727 states. [2021-06-05 05:58:15,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44727 to 29855. [2021-06-05 05:58:15,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29855 states, 29854 states have (on average 2.4705232129697863) internal successors, (73755), 29854 states have internal predecessors, (73755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:58:15,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29855 states to 29855 states and 73755 transitions. [2021-06-05 05:58:15,357 INFO L78 Accepts]: Start accepts. Automaton has 29855 states and 73755 transitions. Word has length 65 [2021-06-05 05:58:15,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:58:15,357 INFO L482 AbstractCegarLoop]: Abstraction has 29855 states and 73755 transitions. [2021-06-05 05:58:15,358 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 3.2432432432432434) internal successors, (120), 36 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:58:15,358 INFO L276 IsEmpty]: Start isEmpty. Operand 29855 states and 73755 transitions. [2021-06-05 05:58:15,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-06-05 05:58:15,385 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:58:15,385 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:58:15,585 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131,129 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:58:15,585 INFO L430 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:58:15,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:58:15,586 INFO L82 PathProgramCache]: Analyzing trace with hash 503897045, now seen corresponding path program 126 times [2021-06-05 05:58:15,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:58:15,586 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681566023] [2021-06-05 05:58:15,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:58:15,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:58:15,963 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 8 proven. 160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:58:15,964 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:58:15,964 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681566023] [2021-06-05 05:58:15,964 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681566023] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:58:15,964 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133458397] [2021-06-05 05:58:15,964 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 130 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 130 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:58:15,995 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-06-05 05:58:15,995 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:58:15,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 66 conjunts are in the unsatisfiable core [2021-06-05 05:58:15,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:58:16,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:16,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:16,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:16,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:16,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:16,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:16,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:16,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:16,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:16,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:16,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:16,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:16,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:16,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:16,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:16,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:16,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:16,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:16,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:16,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:16,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:16,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:16,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:16,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:16,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:16,604 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:58:16,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:16,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:16,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:16,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:16,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:16,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:16,609 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 28 disjoint index pairs (out of 36 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 145 treesize of output 55 [2021-06-05 05:58:16,610 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:58:16,617 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:58:16,618 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:58:16,618 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:151, output treesize:7 [2021-06-05 05:58:16,628 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 8 proven. 160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:58:16,628 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1133458397] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:58:16,628 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:58:16,628 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 28 [2021-06-05 05:58:16,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055539281] [2021-06-05 05:58:16,628 INFO L462 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-06-05 05:58:16,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:58:16,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-06-05 05:58:16,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=698, Unknown=0, NotChecked=0, Total=812 [2021-06-05 05:58:16,629 INFO L87 Difference]: Start difference. First operand 29855 states and 73755 transitions. Second operand has 29 states, 29 states have (on average 2.896551724137931) internal successors, (84), 28 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:58:18,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:58:18,308 INFO L93 Difference]: Finished difference Result 41031 states and 101747 transitions. [2021-06-05 05:58:18,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 05:58:18,309 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.896551724137931) internal successors, (84), 28 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-06-05 05:58:18,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:58:18,355 INFO L225 Difference]: With dead ends: 41031 [2021-06-05 05:58:18,355 INFO L226 Difference]: Without dead ends: 40943 [2021-06-05 05:58:18,355 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 49 SyntacticMatches, 8 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 593 ImplicationChecksByTransitivity, 1401.1ms TimeCoverageRelationStatistics Valid=314, Invalid=2442, Unknown=0, NotChecked=0, Total=2756 [2021-06-05 05:58:18,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40943 states. [2021-06-05 05:58:18,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40943 to 29855. [2021-06-05 05:58:18,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29855 states, 29854 states have (on average 2.4705232129697863) internal successors, (73755), 29854 states have internal predecessors, (73755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:58:19,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29855 states to 29855 states and 73755 transitions. [2021-06-05 05:58:19,063 INFO L78 Accepts]: Start accepts. Automaton has 29855 states and 73755 transitions. Word has length 65 [2021-06-05 05:58:19,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:58:19,063 INFO L482 AbstractCegarLoop]: Abstraction has 29855 states and 73755 transitions. [2021-06-05 05:58:19,063 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 2.896551724137931) internal successors, (84), 28 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:58:19,063 INFO L276 IsEmpty]: Start isEmpty. Operand 29855 states and 73755 transitions. [2021-06-05 05:58:19,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-06-05 05:58:19,084 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:58:19,084 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:58:19,293 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132,130 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:58:19,293 INFO L430 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:58:19,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:58:19,294 INFO L82 PathProgramCache]: Analyzing trace with hash 1880620501, now seen corresponding path program 127 times [2021-06-05 05:58:19,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:58:19,294 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829464888] [2021-06-05 05:58:19,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:58:19,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:58:19,706 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 8 proven. 160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:58:19,706 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:58:19,706 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829464888] [2021-06-05 05:58:19,706 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829464888] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:58:19,706 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707774359] [2021-06-05 05:58:19,706 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 131 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 131 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:58:19,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:58:19,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 66 conjunts are in the unsatisfiable core [2021-06-05 05:58:19,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:58:20,186 INFO L354 Elim1Store]: treesize reduction 322, result has 0.3 percent of original size [2021-06-05 05:58:20,186 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 145 treesize of output 55 [2021-06-05 05:58:20,187 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:58:20,190 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:58:20,191 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:58:20,191 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:145, output treesize:7 [2021-06-05 05:58:20,200 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 8 proven. 160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:58:20,201 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1707774359] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:58:20,201 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:58:20,201 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 27 [2021-06-05 05:58:20,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529696560] [2021-06-05 05:58:20,201 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-06-05 05:58:20,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:58:20,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-06-05 05:58:20,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=647, Unknown=0, NotChecked=0, Total=756 [2021-06-05 05:58:20,201 INFO L87 Difference]: Start difference. First operand 29855 states and 73755 transitions. Second operand has 28 states, 28 states have (on average 2.857142857142857) internal successors, (80), 27 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:58:21,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:58:21,818 INFO L93 Difference]: Finished difference Result 38723 states and 95879 transitions. [2021-06-05 05:58:21,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-05 05:58:21,818 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.857142857142857) internal successors, (80), 27 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-06-05 05:58:21,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:58:21,864 INFO L225 Difference]: With dead ends: 38723 [2021-06-05 05:58:21,864 INFO L226 Difference]: Without dead ends: 38687 [2021-06-05 05:58:21,864 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 49 SyntacticMatches, 9 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 537 ImplicationChecksByTransitivity, 1271.4ms TimeCoverageRelationStatistics Valid=296, Invalid=2254, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 05:58:21,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38687 states. [2021-06-05 05:58:22,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38687 to 29887. [2021-06-05 05:58:22,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29887 states, 29886 states have (on average 2.470554774810948) internal successors, (73835), 29886 states have internal predecessors, (73835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:58:22,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29887 states to 29887 states and 73835 transitions. [2021-06-05 05:58:22,312 INFO L78 Accepts]: Start accepts. Automaton has 29887 states and 73835 transitions. Word has length 65 [2021-06-05 05:58:22,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:58:22,312 INFO L482 AbstractCegarLoop]: Abstraction has 29887 states and 73835 transitions. [2021-06-05 05:58:22,313 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 2.857142857142857) internal successors, (80), 27 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:58:22,313 INFO L276 IsEmpty]: Start isEmpty. Operand 29887 states and 73835 transitions. [2021-06-05 05:58:22,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-06-05 05:58:22,340 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:58:22,340 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:58:22,540 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133,131 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:58:22,540 INFO L430 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:58:22,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:58:22,541 INFO L82 PathProgramCache]: Analyzing trace with hash 1171032407, now seen corresponding path program 128 times [2021-06-05 05:58:22,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:58:22,541 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791613023] [2021-06-05 05:58:22,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:58:22,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:58:22,598 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 81 proven. 104 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:58:22,599 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:58:22,599 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791613023] [2021-06-05 05:58:22,599 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791613023] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:58:22,599 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990829606] [2021-06-05 05:58:22,599 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 132 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 132 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:58:22,628 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 05:58:22,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:58:22,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 18 conjunts are in the unsatisfiable core [2021-06-05 05:58:22,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:58:22,712 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 81 proven. 103 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:58:22,712 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [990829606] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:58:22,712 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:58:22,712 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 11 [2021-06-05 05:58:22,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096971671] [2021-06-05 05:58:22,712 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 05:58:22,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:58:22,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 05:58:22,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-06-05 05:58:22,713 INFO L87 Difference]: Start difference. First operand 29887 states and 73835 transitions. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 11 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:58:22,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:58:22,821 INFO L93 Difference]: Finished difference Result 32099 states and 79190 transitions. [2021-06-05 05:58:22,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-05 05:58:22,821 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 11 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-06-05 05:58:22,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:58:22,858 INFO L225 Difference]: With dead ends: 32099 [2021-06-05 05:58:22,858 INFO L226 Difference]: Without dead ends: 32091 [2021-06-05 05:58:22,858 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 46.3ms TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-06-05 05:58:22,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32091 states. [2021-06-05 05:58:23,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32091 to 30175. [2021-06-05 05:58:23,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30175 states, 30174 states have (on average 2.4713660767548222) internal successors, (74571), 30174 states have internal predecessors, (74571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:58:23,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30175 states to 30175 states and 74571 transitions. [2021-06-05 05:58:23,341 INFO L78 Accepts]: Start accepts. Automaton has 30175 states and 74571 transitions. Word has length 67 [2021-06-05 05:58:23,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:58:23,341 INFO L482 AbstractCegarLoop]: Abstraction has 30175 states and 74571 transitions. [2021-06-05 05:58:23,341 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 11 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:58:23,341 INFO L276 IsEmpty]: Start isEmpty. Operand 30175 states and 74571 transitions. [2021-06-05 05:58:23,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-06-05 05:58:23,369 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:58:23,369 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:58:23,570 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 132 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable134 [2021-06-05 05:58:23,571 INFO L430 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:58:23,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:58:23,571 INFO L82 PathProgramCache]: Analyzing trace with hash 1917971249, now seen corresponding path program 129 times [2021-06-05 05:58:23,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:58:23,571 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432552648] [2021-06-05 05:58:23,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:58:23,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:58:24,005 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 9 proven. 187 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:58:24,005 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:58:24,005 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432552648] [2021-06-05 05:58:24,005 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432552648] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:58:24,005 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [243117023] [2021-06-05 05:58:24,006 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 133 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 133 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:58:24,040 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-06-05 05:58:24,040 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:58:24,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 66 conjunts are in the unsatisfiable core [2021-06-05 05:58:24,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:58:24,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:24,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:24,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:24,667 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:58:24,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:24,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:24,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:24,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:24,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:24,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:24,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:24,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:24,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:24,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:24,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:24,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:24,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:24,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:24,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:24,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:24,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:24,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:24,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:24,680 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:58:24,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:24,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:24,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:24,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:24,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:24,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:24,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:24,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:24,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:24,686 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 28 disjoint index pairs (out of 45 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 145 treesize of output 55 [2021-06-05 05:58:24,687 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:58:24,693 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:58:24,694 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:58:24,694 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:151, output treesize:7 [2021-06-05 05:58:24,704 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:58:24,704 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [243117023] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:58:24,704 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:58:24,705 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 20] total 27 [2021-06-05 05:58:24,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840595656] [2021-06-05 05:58:24,705 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-06-05 05:58:24,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:58:24,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-06-05 05:58:24,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=661, Unknown=0, NotChecked=0, Total=756 [2021-06-05 05:58:24,705 INFO L87 Difference]: Start difference. First operand 30175 states and 74571 transitions. Second operand has 28 states, 28 states have (on average 3.5) internal successors, (98), 27 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:58:27,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:58:27,576 INFO L93 Difference]: Finished difference Result 48215 states and 119666 transitions. [2021-06-05 05:58:27,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 05:58:27,576 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.5) internal successors, (98), 27 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-06-05 05:58:27,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:58:27,623 INFO L225 Difference]: With dead ends: 48215 [2021-06-05 05:58:27,623 INFO L226 Difference]: Without dead ends: 47591 [2021-06-05 05:58:27,623 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 55 SyntacticMatches, 7 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 991 ImplicationChecksByTransitivity, 2136.6ms TimeCoverageRelationStatistics Valid=407, Invalid=3499, Unknown=0, NotChecked=0, Total=3906 [2021-06-05 05:58:27,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47591 states. [2021-06-05 05:58:28,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47591 to 32159. [2021-06-05 05:58:28,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32159 states, 32158 states have (on average 2.4716400273648857) internal successors, (79483), 32158 states have internal predecessors, (79483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:58:28,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32159 states to 32159 states and 79483 transitions. [2021-06-05 05:58:28,134 INFO L78 Accepts]: Start accepts. Automaton has 32159 states and 79483 transitions. Word has length 69 [2021-06-05 05:58:28,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:58:28,134 INFO L482 AbstractCegarLoop]: Abstraction has 32159 states and 79483 transitions. [2021-06-05 05:58:28,134 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 3.5) internal successors, (98), 27 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:58:28,134 INFO L276 IsEmpty]: Start isEmpty. Operand 32159 states and 79483 transitions. [2021-06-05 05:58:28,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-06-05 05:58:28,165 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:58:28,165 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:58:28,366 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 133 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable135 [2021-06-05 05:58:28,366 INFO L430 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:58:28,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:58:28,366 INFO L82 PathProgramCache]: Analyzing trace with hash -258255055, now seen corresponding path program 130 times [2021-06-05 05:58:28,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:58:28,366 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326492148] [2021-06-05 05:58:28,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:58:28,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:58:28,789 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 9 proven. 187 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:58:28,789 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:58:28,789 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326492148] [2021-06-05 05:58:28,789 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326492148] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:58:28,789 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785310995] [2021-06-05 05:58:28,789 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 134 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 134 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:58:28,827 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 05:58:28,827 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:58:28,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 66 conjunts are in the unsatisfiable core [2021-06-05 05:58:28,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:58:29,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:29,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:29,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:29,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:29,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:29,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:29,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:29,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:29,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:29,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:29,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:29,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:29,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:29,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:29,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:29,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:29,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:29,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:29,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:29,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:29,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:29,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:29,490 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:58:29,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:29,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:29,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:29,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:29,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:29,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:29,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:29,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:29,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:29,496 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:58:29,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:29,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:29,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:29,498 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 28 disjoint index pairs (out of 45 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 145 treesize of output 55 [2021-06-05 05:58:29,499 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:58:29,505 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:58:29,506 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:58:29,506 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:151, output treesize:7 [2021-06-05 05:58:29,585 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 9 proven. 187 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:58:29,586 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [785310995] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:58:29,586 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:58:29,586 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20] total 28 [2021-06-05 05:58:29,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549850331] [2021-06-05 05:58:29,586 INFO L462 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-06-05 05:58:29,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:58:29,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-06-05 05:58:29,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=703, Unknown=0, NotChecked=0, Total=812 [2021-06-05 05:58:29,587 INFO L87 Difference]: Start difference. First operand 32159 states and 79483 transitions. Second operand has 29 states, 29 states have (on average 3.2413793103448274) internal successors, (94), 28 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:58:31,960 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 05:58:33,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:58:33,685 INFO L93 Difference]: Finished difference Result 47403 states and 117875 transitions. [2021-06-05 05:58:33,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-05 05:58:33,685 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.2413793103448274) internal successors, (94), 28 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-06-05 05:58:33,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:58:33,736 INFO L225 Difference]: With dead ends: 47403 [2021-06-05 05:58:33,736 INFO L226 Difference]: Without dead ends: 47199 [2021-06-05 05:58:33,737 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 54 SyntacticMatches, 7 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1416 ImplicationChecksByTransitivity, 3174.5ms TimeCoverageRelationStatistics Valid=609, Invalid=4793, Unknown=0, NotChecked=0, Total=5402 [2021-06-05 05:58:33,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47199 states. [2021-06-05 05:58:34,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47199 to 32319. [2021-06-05 05:58:34,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32319 states, 32318 states have (on average 2.471780431957423) internal successors, (79883), 32318 states have internal predecessors, (79883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:58:34,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32319 states to 32319 states and 79883 transitions. [2021-06-05 05:58:34,224 INFO L78 Accepts]: Start accepts. Automaton has 32319 states and 79883 transitions. Word has length 69 [2021-06-05 05:58:34,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:58:34,225 INFO L482 AbstractCegarLoop]: Abstraction has 32319 states and 79883 transitions. [2021-06-05 05:58:34,225 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 3.2413793103448274) internal successors, (94), 28 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:58:34,225 INFO L276 IsEmpty]: Start isEmpty. Operand 32319 states and 79883 transitions. [2021-06-05 05:58:34,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-06-05 05:58:34,253 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:58:34,253 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:58:34,453 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 134 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable136 [2021-06-05 05:58:34,454 INFO L430 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:58:34,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:58:34,454 INFO L82 PathProgramCache]: Analyzing trace with hash 1900906419, now seen corresponding path program 131 times [2021-06-05 05:58:34,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:58:34,454 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124266585] [2021-06-05 05:58:34,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:58:34,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:58:34,801 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 9 proven. 204 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:58:34,801 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:58:34,801 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124266585] [2021-06-05 05:58:34,801 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124266585] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:58:34,801 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801615139] [2021-06-05 05:58:34,801 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 135 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 135 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:58:34,836 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2021-06-05 05:58:34,837 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:58:34,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 75 conjunts are in the unsatisfiable core [2021-06-05 05:58:34,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:58:35,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:35,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:35,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:35,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:35,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:35,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:35,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:35,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:35,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:35,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:35,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:35,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:35,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:35,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:35,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:35,758 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:58:35,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:35,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:35,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:35,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:35,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:35,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:35,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:35,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:35,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:35,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:35,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:35,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:35,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:35,767 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:58:35,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:35,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:35,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:35,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:35,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:35,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:35,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:35,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:35,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:35,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:35,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:35,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:35,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:35,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:35,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:35,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:35,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:35,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:35,779 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:58:35,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:35,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:35,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:35,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:35,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:35,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:35,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:35,784 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:58:35,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:35,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:35,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:35,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:35,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:35,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:35,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:35,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:35,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:35,790 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:58:35,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:35,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:35,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:35,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:35,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:35,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:35,795 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:58:35,795 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:58:35,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:35,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:35,797 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:58:35,797 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 17 select indices, 17 select index equivalence classes, 36 disjoint index pairs (out of 136 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 162 treesize of output 60 [2021-06-05 05:58:35,798 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:58:35,804 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:58:35,805 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:58:35,805 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:168, output treesize:7 [2021-06-05 05:58:35,815 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 5 proven. 209 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:58:35,816 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1801615139] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:58:35,816 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:58:35,816 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 22] total 37 [2021-06-05 05:58:35,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956334150] [2021-06-05 05:58:35,816 INFO L462 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-06-05 05:58:35,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:58:35,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-06-05 05:58:35,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=1261, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 05:58:35,816 INFO L87 Difference]: Start difference. First operand 32319 states and 79883 transitions. Second operand has 38 states, 38 states have (on average 3.236842105263158) internal successors, (123), 37 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:58:38,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:58:38,724 INFO L93 Difference]: Finished difference Result 52087 states and 129267 transitions. [2021-06-05 05:58:38,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 05:58:38,724 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.236842105263158) internal successors, (123), 37 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-06-05 05:58:38,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:58:38,789 INFO L225 Difference]: With dead ends: 52087 [2021-06-05 05:58:38,789 INFO L226 Difference]: Without dead ends: 52047 [2021-06-05 05:58:38,789 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 54 SyntacticMatches, 2 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1322 ImplicationChecksByTransitivity, 1852.1ms TimeCoverageRelationStatistics Valid=400, Invalid=4292, Unknown=0, NotChecked=0, Total=4692 [2021-06-05 05:58:38,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52047 states. [2021-06-05 05:58:39,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52047 to 33215. [2021-06-05 05:58:39,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33215 states, 33214 states have (on average 2.47109652556151) internal successors, (82075), 33214 states have internal predecessors, (82075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:58:39,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33215 states to 33215 states and 82075 transitions. [2021-06-05 05:58:39,421 INFO L78 Accepts]: Start accepts. Automaton has 33215 states and 82075 transitions. Word has length 71 [2021-06-05 05:58:39,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:58:39,421 INFO L482 AbstractCegarLoop]: Abstraction has 33215 states and 82075 transitions. [2021-06-05 05:58:39,421 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 3.236842105263158) internal successors, (123), 37 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:58:39,422 INFO L276 IsEmpty]: Start isEmpty. Operand 33215 states and 82075 transitions. [2021-06-05 05:58:39,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-06-05 05:58:39,452 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:58:39,452 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:58:39,652 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137,135 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:58:39,653 INFO L430 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:58:39,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:58:39,653 INFO L82 PathProgramCache]: Analyzing trace with hash 475670963, now seen corresponding path program 132 times [2021-06-05 05:58:39,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:58:39,653 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108152491] [2021-06-05 05:58:39,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:58:39,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:58:40,017 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 9 proven. 204 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:58:40,017 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:58:40,017 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108152491] [2021-06-05 05:58:40,017 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108152491] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:58:40,017 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814834907] [2021-06-05 05:58:40,017 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 136 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 136 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:58:40,051 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-06-05 05:58:40,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:58:40,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 75 conjunts are in the unsatisfiable core [2021-06-05 05:58:40,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:58:41,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:41,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:41,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:41,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:41,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:41,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:41,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:41,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:41,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:41,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:41,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:41,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:41,116 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:58:41,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:41,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:41,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:41,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:41,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:41,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:41,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:41,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:41,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:41,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:41,124 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:58:41,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:41,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:41,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:41,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:41,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:41,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:41,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:41,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:41,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:41,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:41,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:41,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:41,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:41,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:41,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:41,136 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:58:41,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:41,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:41,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:41,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:41,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:41,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:41,141 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:58:41,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:41,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:41,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:41,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:41,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:41,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:41,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:41,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:41,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:41,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:41,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:41,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:41,149 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:58:41,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:41,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:41,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:41,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:41,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:41,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:41,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:41,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:41,155 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:58:41,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:41,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:41,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:41,158 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:58:41,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:41,159 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:58:41,159 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 17 select indices, 17 select index equivalence classes, 36 disjoint index pairs (out of 136 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 162 treesize of output 60 [2021-06-05 05:58:41,161 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:58:41,166 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:58:41,177 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:58:41,177 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:170, output treesize:7 [2021-06-05 05:58:41,190 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 0 proven. 214 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:58:41,190 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [814834907] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:58:41,190 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:58:41,190 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 22] total 38 [2021-06-05 05:58:41,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325558042] [2021-06-05 05:58:41,191 INFO L462 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-06-05 05:58:41,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:58:41,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-06-05 05:58:41,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=1375, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 05:58:41,191 INFO L87 Difference]: Start difference. First operand 33215 states and 82075 transitions. Second operand has 39 states, 39 states have (on average 3.2051282051282053) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:58:41,540 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 15 [2021-06-05 05:58:47,938 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 98 [2021-06-05 05:58:48,299 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 101 [2021-06-05 05:58:49,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:58:49,268 INFO L93 Difference]: Finished difference Result 58283 states and 144389 transitions. [2021-06-05 05:58:49,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-06-05 05:58:49,269 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.2051282051282053) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-06-05 05:58:49,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:58:49,336 INFO L225 Difference]: With dead ends: 58283 [2021-06-05 05:58:49,336 INFO L226 Difference]: Without dead ends: 57443 [2021-06-05 05:58:49,337 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2366 ImplicationChecksByTransitivity, 5577.4ms TimeCoverageRelationStatistics Valid=685, Invalid=9415, Unknown=0, NotChecked=0, Total=10100 [2021-06-05 05:58:49,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57443 states. [2021-06-05 05:58:49,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57443 to 33855. [2021-06-05 05:58:49,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33855 states, 33854 states have (on average 2.470874933538134) internal successors, (83649), 33854 states have internal predecessors, (83649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:58:49,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33855 states to 33855 states and 83649 transitions. [2021-06-05 05:58:49,922 INFO L78 Accepts]: Start accepts. Automaton has 33855 states and 83649 transitions. Word has length 71 [2021-06-05 05:58:49,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:58:49,922 INFO L482 AbstractCegarLoop]: Abstraction has 33855 states and 83649 transitions. [2021-06-05 05:58:49,922 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 3.2051282051282053) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:58:49,922 INFO L276 IsEmpty]: Start isEmpty. Operand 33855 states and 83649 transitions. [2021-06-05 05:58:49,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-06-05 05:58:49,958 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:58:49,958 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:58:50,158 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 136 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable138 [2021-06-05 05:58:50,158 INFO L430 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:58:50,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:58:50,159 INFO L82 PathProgramCache]: Analyzing trace with hash -584494157, now seen corresponding path program 133 times [2021-06-05 05:58:50,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:58:50,159 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516800539] [2021-06-05 05:58:50,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:58:50,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:58:50,553 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 9 proven. 204 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:58:50,553 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:58:50,553 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516800539] [2021-06-05 05:58:50,553 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516800539] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:58:50,553 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716387205] [2021-06-05 05:58:50,553 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 137 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 137 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:58:50,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:58:50,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 74 conjunts are in the unsatisfiable core [2021-06-05 05:58:50,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:58:51,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:51,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:51,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:51,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:51,678 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:58:51,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:51,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:51,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:51,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:51,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:51,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:51,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:51,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:51,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:51,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:51,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:51,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:51,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:51,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:51,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:51,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:51,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:51,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:51,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:51,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:51,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:51,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:51,693 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:58:51,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:51,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:51,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:51,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:51,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:51,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:51,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:51,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:51,699 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:58:51,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:51,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:51,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:51,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:51,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:51,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:51,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:51,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:51,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:51,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:51,706 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:58:51,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:51,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:51,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:51,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:51,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:51,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:51,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:51,711 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:58:51,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:51,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:51,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:51,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:51,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:51,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:51,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:51,716 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:58:51,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:51,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:51,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:51,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:51,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:51,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:51,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:51,721 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:58:51,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:51,722 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:58:51,723 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 17 select indices, 17 select index equivalence classes, 36 disjoint index pairs (out of 136 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 162 treesize of output 60 [2021-06-05 05:58:51,724 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:58:51,730 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:58:51,731 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:58:51,731 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:168, output treesize:7 [2021-06-05 05:58:51,741 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 14 proven. 200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:58:51,741 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716387205] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:58:51,741 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:58:51,741 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 22] total 37 [2021-06-05 05:58:51,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118939358] [2021-06-05 05:58:51,741 INFO L462 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-06-05 05:58:51,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:58:51,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-06-05 05:58:51,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=1259, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 05:58:51,741 INFO L87 Difference]: Start difference. First operand 33855 states and 83649 transitions. Second operand has 38 states, 38 states have (on average 3.1315789473684212) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:58:54,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:58:54,180 INFO L93 Difference]: Finished difference Result 53495 states and 133049 transitions. [2021-06-05 05:58:54,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 05:58:54,181 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.1315789473684212) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-06-05 05:58:54,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:58:54,249 INFO L225 Difference]: With dead ends: 53495 [2021-06-05 05:58:54,250 INFO L226 Difference]: Without dead ends: 53311 [2021-06-05 05:58:54,250 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 54 SyntacticMatches, 2 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1328 ImplicationChecksByTransitivity, 1874.6ms TimeCoverageRelationStatistics Valid=406, Invalid=4286, Unknown=0, NotChecked=0, Total=4692 [2021-06-05 05:58:54,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53311 states. [2021-06-05 05:58:54,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53311 to 34159. [2021-06-05 05:58:54,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34159 states, 34158 states have (on average 2.4711341413431698) internal successors, (84409), 34158 states have internal predecessors, (84409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:58:54,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34159 states to 34159 states and 84409 transitions. [2021-06-05 05:58:54,741 INFO L78 Accepts]: Start accepts. Automaton has 34159 states and 84409 transitions. Word has length 71 [2021-06-05 05:58:54,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:58:54,741 INFO L482 AbstractCegarLoop]: Abstraction has 34159 states and 84409 transitions. [2021-06-05 05:58:54,742 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 3.1315789473684212) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:58:54,742 INFO L276 IsEmpty]: Start isEmpty. Operand 34159 states and 84409 transitions. [2021-06-05 05:58:54,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-06-05 05:58:54,772 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:58:54,772 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:58:54,972 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139,137 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:58:54,972 INFO L430 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:58:54,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:58:54,973 INFO L82 PathProgramCache]: Analyzing trace with hash -1050795597, now seen corresponding path program 134 times [2021-06-05 05:58:54,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:58:54,973 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561482996] [2021-06-05 05:58:54,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:58:54,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:58:55,302 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 9 proven. 204 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:58:55,302 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:58:55,302 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561482996] [2021-06-05 05:58:55,302 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561482996] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:58:55,302 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714038464] [2021-06-05 05:58:55,302 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 138 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 138 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:58:55,332 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 05:58:55,333 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:58:55,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 74 conjunts are in the unsatisfiable core [2021-06-05 05:58:55,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:58:56,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:56,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:56,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:56,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:56,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:56,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:56,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:56,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:56,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:56,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:56,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:56,303 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:58:56,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:56,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:56,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:56,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:56,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:56,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:56,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:56,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:56,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:56,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:56,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:56,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:56,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:56,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:56,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:56,313 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:58:56,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:56,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:56,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:56,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:56,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:56,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:56,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:56,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:56,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:56,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:56,320 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:58:56,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:56,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:56,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:56,323 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:58:56,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:56,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:56,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:56,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:56,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:56,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:56,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:56,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:56,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:56,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:56,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:56,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:56,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:56,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:56,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:56,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:56,334 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:58:56,334 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:58:56,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:56,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:56,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:56,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:56,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:56,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:56,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:56,339 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:58:56,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:56,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:56,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:58:56,342 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:58:56,342 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 17 select indices, 17 select index equivalence classes, 36 disjoint index pairs (out of 136 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 162 treesize of output 60 [2021-06-05 05:58:56,344 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:58:56,349 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:58:56,351 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:58:56,351 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:168, output treesize:7 [2021-06-05 05:58:56,361 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 5 proven. 209 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:58:56,362 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1714038464] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:58:56,362 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:58:56,362 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 22] total 36 [2021-06-05 05:58:56,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572665784] [2021-06-05 05:58:56,362 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-06-05 05:58:56,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:58:56,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-06-05 05:58:56,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1194, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 05:58:56,362 INFO L87 Difference]: Start difference. First operand 34159 states and 84409 transitions. Second operand has 37 states, 37 states have (on average 3.324324324324324) internal successors, (123), 36 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:58:59,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:58:59,220 INFO L93 Difference]: Finished difference Result 54951 states and 136441 transitions. [2021-06-05 05:58:59,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-05 05:58:59,221 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.324324324324324) internal successors, (123), 36 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-06-05 05:58:59,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:58:59,282 INFO L225 Difference]: With dead ends: 54951 [2021-06-05 05:58:59,282 INFO L226 Difference]: Without dead ends: 54863 [2021-06-05 05:58:59,283 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 55 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1253 ImplicationChecksByTransitivity, 1858.8ms TimeCoverageRelationStatistics Valid=379, Invalid=4043, Unknown=0, NotChecked=0, Total=4422 [2021-06-05 05:58:59,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54863 states. [2021-06-05 05:58:59,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54863 to 33919. [2021-06-05 05:58:59,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33919 states, 33918 states have (on average 2.4709298897340646) internal successors, (83809), 33918 states have internal predecessors, (83809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:58:59,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33919 states to 33919 states and 83809 transitions. [2021-06-05 05:58:59,778 INFO L78 Accepts]: Start accepts. Automaton has 33919 states and 83809 transitions. Word has length 71 [2021-06-05 05:58:59,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:58:59,778 INFO L482 AbstractCegarLoop]: Abstraction has 33919 states and 83809 transitions. [2021-06-05 05:58:59,778 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 3.324324324324324) internal successors, (123), 36 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:58:59,778 INFO L276 IsEmpty]: Start isEmpty. Operand 33919 states and 83809 transitions. [2021-06-05 05:58:59,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-06-05 05:58:59,807 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:58:59,807 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:59:00,007 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140,138 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:59:00,008 INFO L430 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:59:00,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:59:00,008 INFO L82 PathProgramCache]: Analyzing trace with hash -403180109, now seen corresponding path program 135 times [2021-06-05 05:59:00,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:59:00,008 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647994023] [2021-06-05 05:59:00,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:59:00,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:59:00,481 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 9 proven. 204 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 05:59:00,481 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:59:00,481 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647994023] [2021-06-05 05:59:00,481 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647994023] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:59:00,481 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10829709] [2021-06-05 05:59:00,481 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 139 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 139 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:59:00,524 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-06-05 05:59:00,524 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:59:00,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 74 conjunts are in the unsatisfiable core [2021-06-05 05:59:00,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:59:12,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:59:12,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:59:12,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:59:12,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:59:12,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:59:12,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:59:12,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:59:12,565 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:59:12,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:59:12,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:59:12,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:59:12,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:59:12,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:59:12,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:59:12,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:59:12,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:59:12,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:59:12,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:59:12,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:59:12,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:59:12,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:59:12,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:59:12,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:59:12,576 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:59:12,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:59:12,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:59:12,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:59:12,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:59:12,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:59:12,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:59:12,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:59:12,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:59:12,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:59:12,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:59:12,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:59:12,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:59:12,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:59:12,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:59:12,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:59:12,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:59:12,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:59:12,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:59:12,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:59:12,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:59:12,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:59:12,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:59:12,591 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:59:12,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:59:12,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:59:12,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:59:12,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:59:12,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:59:12,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:59:12,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:59:12,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:59:12,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:59:12,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:59:12,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:59:12,599 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:59:12,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:59:12,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:59:12,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:59:12,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:59:12,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:59:12,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:59:12,603 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:59:12,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:59:12,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:59:12,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:59:12,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:59:12,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:59:12,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:59:12,608 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:59:12,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:59:12,609 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:59:12,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:59:12,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 05:59:12,610 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:59:12,611 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 17 select indices, 17 select index equivalence classes, 36 disjoint index pairs (out of 136 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 156 treesize of output 60 [2021-06-05 05:59:12,612 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:59:12,630 INFO L628 ElimStorePlain]: treesize reduction 3, result has 89.3 percent of original size [2021-06-05 05:59:12,631 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 05:59:12,631 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:177, output treesize:7 [2021-06-05 05:59:12,642 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 5 proven. 209 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:59:12,642 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [10829709] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:59:12,642 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:59:12,642 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 22] total 37 [2021-06-05 05:59:12,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447416129] [2021-06-05 05:59:12,642 INFO L462 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-06-05 05:59:12,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:59:12,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-06-05 05:59:12,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=1264, Unknown=3, NotChecked=0, Total=1406 [2021-06-05 05:59:12,643 INFO L87 Difference]: Start difference. First operand 33919 states and 83809 transitions. Second operand has 38 states, 38 states have (on average 3.236842105263158) internal successors, (123), 37 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:00:37,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:00:37,837 INFO L93 Difference]: Finished difference Result 52511 states and 130429 transitions. [2021-06-05 06:00:37,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 06:00:37,838 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.236842105263158) internal successors, (123), 37 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-06-05 06:00:37,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:00:37,912 INFO L225 Difference]: With dead ends: 52511 [2021-06-05 06:00:37,913 INFO L226 Difference]: Without dead ends: 52079 [2021-06-05 06:00:37,913 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 54 SyntacticMatches, 2 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1269 ImplicationChecksByTransitivity, 17928.5ms TimeCoverageRelationStatistics Valid=398, Invalid=4290, Unknown=4, NotChecked=0, Total=4692 [2021-06-05 06:00:37,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52079 states. [2021-06-05 06:00:38,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52079 to 34335. [2021-06-05 06:00:38,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34335 states, 34334 states have (on average 2.4708161006582396) internal successors, (84833), 34334 states have internal predecessors, (84833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:00:38,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34335 states to 34335 states and 84833 transitions. [2021-06-05 06:00:38,515 INFO L78 Accepts]: Start accepts. Automaton has 34335 states and 84833 transitions. Word has length 71 [2021-06-05 06:00:38,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:00:38,515 INFO L482 AbstractCegarLoop]: Abstraction has 34335 states and 84833 transitions. [2021-06-05 06:00:38,515 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 3.236842105263158) internal successors, (123), 37 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:00:38,515 INFO L276 IsEmpty]: Start isEmpty. Operand 34335 states and 84833 transitions. [2021-06-05 06:00:38,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-06-05 06:00:38,550 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:00:38,550 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:00:38,750 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141,139 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:00:38,751 INFO L430 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:00:38,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:00:38,751 INFO L82 PathProgramCache]: Analyzing trace with hash 395386803, now seen corresponding path program 136 times [2021-06-05 06:00:38,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:00:38,751 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047296351] [2021-06-05 06:00:38,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:00:38,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:00:39,127 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 9 proven. 204 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:00:39,127 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:00:39,127 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047296351] [2021-06-05 06:00:39,128 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047296351] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:00:39,128 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638626629] [2021-06-05 06:00:39,128 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 140 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 140 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:00:39,161 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:00:39,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:00:39,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 74 conjunts are in the unsatisfiable core [2021-06-05 06:00:39,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:00:40,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:40,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:40,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:40,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:40,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:40,088 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:00:40,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:40,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:40,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:40,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:40,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:40,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:40,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:40,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:40,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:40,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:40,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:40,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:40,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:40,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:40,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:40,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:40,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:40,100 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:00:40,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:40,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:40,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:40,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:40,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:40,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:40,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:40,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:40,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:40,106 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:00:40,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:40,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:40,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:40,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:40,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:40,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:40,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:40,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:40,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:40,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:40,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:40,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:40,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:40,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:40,116 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:00:40,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:40,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:40,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:40,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:40,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:40,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:40,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:40,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:40,121 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:00:40,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:40,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:40,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:40,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:40,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:40,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:40,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:40,126 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:00:40,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:40,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:40,129 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:00:40,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:40,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:40,131 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:00:40,131 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 17 select indices, 17 select index equivalence classes, 36 disjoint index pairs (out of 136 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 162 treesize of output 60 [2021-06-05 06:00:40,133 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:00:40,138 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:00:40,139 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 06:00:40,139 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:168, output treesize:7 [2021-06-05 06:00:40,149 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 14 proven. 200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:00:40,149 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638626629] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:00:40,149 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:00:40,149 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 22] total 37 [2021-06-05 06:00:40,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035353402] [2021-06-05 06:00:40,149 INFO L462 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-06-05 06:00:40,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:00:40,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-06-05 06:00:40,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=1259, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 06:00:40,150 INFO L87 Difference]: Start difference. First operand 34335 states and 84833 transitions. Second operand has 38 states, 38 states have (on average 3.1315789473684212) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:00:42,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:00:42,575 INFO L93 Difference]: Finished difference Result 50775 states and 125929 transitions. [2021-06-05 06:00:42,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 06:00:42,575 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.1315789473684212) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-06-05 06:00:42,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:00:42,636 INFO L225 Difference]: With dead ends: 50775 [2021-06-05 06:00:42,636 INFO L226 Difference]: Without dead ends: 50735 [2021-06-05 06:00:42,637 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 54 SyntacticMatches, 2 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1318 ImplicationChecksByTransitivity, 1942.0ms TimeCoverageRelationStatistics Valid=406, Invalid=4286, Unknown=0, NotChecked=0, Total=4692 [2021-06-05 06:00:42,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50735 states. [2021-06-05 06:00:43,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50735 to 34367. [2021-06-05 06:00:43,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34367 states, 34366 states have (on average 2.4708432753302683) internal successors, (84913), 34366 states have internal predecessors, (84913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:00:43,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34367 states to 34367 states and 84913 transitions. [2021-06-05 06:00:43,130 INFO L78 Accepts]: Start accepts. Automaton has 34367 states and 84913 transitions. Word has length 71 [2021-06-05 06:00:43,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:00:43,130 INFO L482 AbstractCegarLoop]: Abstraction has 34367 states and 84913 transitions. [2021-06-05 06:00:43,130 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 3.1315789473684212) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:00:43,130 INFO L276 IsEmpty]: Start isEmpty. Operand 34367 states and 84913 transitions. [2021-06-05 06:00:43,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-06-05 06:00:43,299 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:00:43,299 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:00:43,499 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142,140 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:00:43,500 INFO L430 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:00:43,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:00:43,500 INFO L82 PathProgramCache]: Analyzing trace with hash -613231693, now seen corresponding path program 137 times [2021-06-05 06:00:43,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:00:43,500 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673203565] [2021-06-05 06:00:43,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:00:43,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:00:43,868 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 9 proven. 205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:00:43,868 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:00:43,868 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673203565] [2021-06-05 06:00:43,868 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673203565] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:00:43,868 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1556982623] [2021-06-05 06:00:43,868 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 141 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 141 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:00:43,902 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-06-05 06:00:43,902 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:00:43,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 74 conjunts are in the unsatisfiable core [2021-06-05 06:00:43,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:00:44,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:44,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:44,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:44,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:44,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:44,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:44,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:44,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:44,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:44,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:44,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:44,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:44,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:44,880 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:00:44,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:44,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:44,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:44,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:44,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:44,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:44,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:44,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:44,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:44,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:44,886 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:00:44,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:44,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:44,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:44,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:44,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:44,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:44,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:44,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:44,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:44,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:44,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:44,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:44,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:44,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:44,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:44,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:44,897 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:00:44,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:44,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:44,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:44,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:44,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:44,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:44,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:44,902 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:00:44,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:44,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:44,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:44,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:44,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:44,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:44,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:44,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:44,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:44,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:44,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:44,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:44,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:44,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:44,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:44,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:44,913 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:00:44,914 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:00:44,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:44,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:44,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:44,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:44,917 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:00:44,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:44,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:44,918 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:00:44,919 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 17 select indices, 17 select index equivalence classes, 36 disjoint index pairs (out of 136 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 162 treesize of output 60 [2021-06-05 06:00:44,920 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:00:44,926 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:00:44,926 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 06:00:44,926 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:168, output treesize:7 [2021-06-05 06:00:44,937 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 0 proven. 214 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:00:44,937 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1556982623] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:00:44,937 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:00:44,937 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 22] total 37 [2021-06-05 06:00:44,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416306254] [2021-06-05 06:00:44,938 INFO L462 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-06-05 06:00:44,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:00:44,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-06-05 06:00:44,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=1261, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 06:00:44,938 INFO L87 Difference]: Start difference. First operand 34367 states and 84913 transitions. Second operand has 38 states, 38 states have (on average 3.263157894736842) internal successors, (124), 37 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:00:48,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:00:48,258 INFO L93 Difference]: Finished difference Result 64583 states and 160781 transitions. [2021-06-05 06:00:48,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 06:00:48,258 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.263157894736842) internal successors, (124), 37 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-06-05 06:00:48,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:00:48,334 INFO L225 Difference]: With dead ends: 64583 [2021-06-05 06:00:48,334 INFO L226 Difference]: Without dead ends: 64351 [2021-06-05 06:00:48,334 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 54 SyntacticMatches, 2 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1250 ImplicationChecksByTransitivity, 1902.6ms TimeCoverageRelationStatistics Valid=400, Invalid=4292, Unknown=0, NotChecked=0, Total=4692 [2021-06-05 06:00:48,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64351 states. [2021-06-05 06:00:48,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64351 to 32383. [2021-06-05 06:00:48,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32383 states, 32382 states have (on average 2.472762645914397) internal successors, (80073), 32382 states have internal predecessors, (80073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:00:48,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32383 states to 32383 states and 80073 transitions. [2021-06-05 06:00:48,895 INFO L78 Accepts]: Start accepts. Automaton has 32383 states and 80073 transitions. Word has length 71 [2021-06-05 06:00:48,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:00:48,895 INFO L482 AbstractCegarLoop]: Abstraction has 32383 states and 80073 transitions. [2021-06-05 06:00:48,895 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 3.263157894736842) internal successors, (124), 37 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:00:48,895 INFO L276 IsEmpty]: Start isEmpty. Operand 32383 states and 80073 transitions. [2021-06-05 06:00:48,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-06-05 06:00:48,931 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:00:48,931 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:00:49,131 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143,141 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:00:49,132 INFO L430 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:00:49,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:00:49,132 INFO L82 PathProgramCache]: Analyzing trace with hash -1243698253, now seen corresponding path program 138 times [2021-06-05 06:00:49,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:00:49,132 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343028253] [2021-06-05 06:00:49,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:00:49,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:00:49,461 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 9 proven. 205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:00:49,461 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:00:49,461 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343028253] [2021-06-05 06:00:49,461 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343028253] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:00:49,461 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615869632] [2021-06-05 06:00:49,461 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 142 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 142 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:00:49,496 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-06-05 06:00:49,496 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:00:49,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 75 conjunts are in the unsatisfiable core [2021-06-05 06:00:49,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:00:50,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:50,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:50,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:50,427 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:00:50,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:50,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:50,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:50,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:50,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:50,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:50,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:50,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:50,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:50,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:50,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:50,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:50,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:50,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:50,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:50,438 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:00:50,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:50,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:50,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:50,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:50,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:50,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:50,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:50,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:50,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:50,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:50,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:50,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:50,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:50,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:50,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:50,448 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:00:50,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:50,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:50,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:50,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:50,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:50,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:50,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:50,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:50,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:50,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:50,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:50,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:50,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:50,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:50,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:50,459 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:00:50,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:50,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:50,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:50,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:50,462 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:00:50,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:50,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:50,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:50,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:50,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:50,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:50,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:50,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:50,468 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:00:50,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:50,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:50,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:50,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:50,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:50,471 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:00:50,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:50,473 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:00:50,473 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 17 select indices, 17 select index equivalence classes, 36 disjoint index pairs (out of 136 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 162 treesize of output 60 [2021-06-05 06:00:50,474 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:00:50,480 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:00:50,480 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 06:00:50,481 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:170, output treesize:7 [2021-06-05 06:00:50,499 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 0 proven. 214 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:00:50,499 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1615869632] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:00:50,499 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:00:50,499 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 22] total 35 [2021-06-05 06:00:50,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238887785] [2021-06-05 06:00:50,499 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-06-05 06:00:50,499 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:00:50,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-06-05 06:00:50,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=1166, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 06:00:50,500 INFO L87 Difference]: Start difference. First operand 32383 states and 80073 transitions. Second operand has 36 states, 36 states have (on average 3.5) internal successors, (126), 35 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:00:55,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:00:55,012 INFO L93 Difference]: Finished difference Result 38879 states and 96017 transitions. [2021-06-05 06:00:55,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-05 06:00:55,012 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.5) internal successors, (126), 35 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-06-05 06:00:55,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:00:55,055 INFO L225 Difference]: With dead ends: 38879 [2021-06-05 06:00:55,055 INFO L226 Difference]: Without dead ends: 38783 [2021-06-05 06:00:55,056 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 963 ImplicationChecksByTransitivity, 3220.6ms TimeCoverageRelationStatistics Valid=418, Invalid=4694, Unknown=0, NotChecked=0, Total=5112 [2021-06-05 06:00:55,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38783 states. [2021-06-05 06:00:55,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38783 to 30479. [2021-06-05 06:00:55,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30479 states, 30478 states have (on average 2.4713891987663232) internal successors, (75323), 30478 states have internal predecessors, (75323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:00:55,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30479 states to 30479 states and 75323 transitions. [2021-06-05 06:00:55,541 INFO L78 Accepts]: Start accepts. Automaton has 30479 states and 75323 transitions. Word has length 71 [2021-06-05 06:00:55,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:00:55,541 INFO L482 AbstractCegarLoop]: Abstraction has 30479 states and 75323 transitions. [2021-06-05 06:00:55,541 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 3.5) internal successors, (126), 35 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:00:55,542 INFO L276 IsEmpty]: Start isEmpty. Operand 30479 states and 75323 transitions. [2021-06-05 06:00:55,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-06-05 06:00:55,569 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:00:55,569 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:00:55,769 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 142 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable144 [2021-06-05 06:00:55,770 INFO L430 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:00:55,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:00:55,770 INFO L82 PathProgramCache]: Analyzing trace with hash -1673396813, now seen corresponding path program 139 times [2021-06-05 06:00:55,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:00:55,770 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013281565] [2021-06-05 06:00:55,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:00:55,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:00:56,143 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 9 proven. 205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:00:56,144 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:00:56,144 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013281565] [2021-06-05 06:00:56,144 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013281565] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:00:56,144 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078095637] [2021-06-05 06:00:56,144 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 143 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 143 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:00:56,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:00:56,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 74 conjunts are in the unsatisfiable core [2021-06-05 06:00:56,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:00:57,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:57,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:57,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:57,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:57,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:57,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:57,108 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:00:57,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:57,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:57,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:57,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:57,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:57,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:57,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:57,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:57,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:57,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:57,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:57,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:57,116 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:00:57,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:57,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:57,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:57,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:57,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:57,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:57,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:57,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:57,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:57,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:57,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:57,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:57,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:57,125 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:00:57,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:57,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:57,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:57,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:57,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:57,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:57,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:57,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:57,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:57,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:57,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:57,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:57,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:57,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:57,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:57,135 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:00:57,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:57,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:57,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:57,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:57,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:57,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:57,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:57,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:57,140 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:00:57,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:57,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:57,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:57,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:57,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:57,144 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:00:57,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:57,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:57,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:57,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:57,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:57,148 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:00:57,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:57,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:00:57,149 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:00:57,150 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 17 select indices, 17 select index equivalence classes, 36 disjoint index pairs (out of 136 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 162 treesize of output 60 [2021-06-05 06:00:57,151 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:00:57,156 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:00:57,157 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 06:00:57,157 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:168, output treesize:7 [2021-06-05 06:00:57,168 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 9 proven. 205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:00:57,168 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2078095637] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:00:57,168 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:00:57,168 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 22] total 37 [2021-06-05 06:00:57,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031869498] [2021-06-05 06:00:57,168 INFO L462 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-06-05 06:00:57,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:00:57,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-06-05 06:00:57,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=1259, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 06:00:57,169 INFO L87 Difference]: Start difference. First operand 30479 states and 75323 transitions. Second operand has 38 states, 38 states have (on average 3.1578947368421053) internal successors, (120), 37 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:00:59,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:00:59,580 INFO L93 Difference]: Finished difference Result 54407 states and 135523 transitions. [2021-06-05 06:00:59,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 06:00:59,581 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.1578947368421053) internal successors, (120), 37 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-06-05 06:00:59,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:00:59,649 INFO L225 Difference]: With dead ends: 54407 [2021-06-05 06:00:59,649 INFO L226 Difference]: Without dead ends: 54175 [2021-06-05 06:00:59,649 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 54 SyntacticMatches, 2 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1250 ImplicationChecksByTransitivity, 1898.6ms TimeCoverageRelationStatistics Valid=406, Invalid=4286, Unknown=0, NotChecked=0, Total=4692 [2021-06-05 06:00:59,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54175 states. [2021-06-05 06:01:00,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54175 to 30927. [2021-06-05 06:01:00,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30927 states, 30926 states have (on average 2.4710276143051155) internal successors, (76419), 30926 states have internal predecessors, (76419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:01:00,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30927 states to 30927 states and 76419 transitions. [2021-06-05 06:01:00,271 INFO L78 Accepts]: Start accepts. Automaton has 30927 states and 76419 transitions. Word has length 71 [2021-06-05 06:01:00,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:01:00,271 INFO L482 AbstractCegarLoop]: Abstraction has 30927 states and 76419 transitions. [2021-06-05 06:01:00,271 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 3.1578947368421053) internal successors, (120), 37 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:01:00,271 INFO L276 IsEmpty]: Start isEmpty. Operand 30927 states and 76419 transitions. [2021-06-05 06:01:00,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-06-05 06:01:00,300 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:01:00,300 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:01:00,501 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 143 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable145 [2021-06-05 06:01:00,501 INFO L430 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:01:00,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:01:00,501 INFO L82 PathProgramCache]: Analyzing trace with hash -70060109, now seen corresponding path program 140 times [2021-06-05 06:01:00,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:01:00,501 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888522395] [2021-06-05 06:01:00,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:01:00,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:01:00,800 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 9 proven. 202 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-06-05 06:01:00,800 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:01:00,800 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888522395] [2021-06-05 06:01:00,800 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888522395] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:01:00,801 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617465138] [2021-06-05 06:01:00,801 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 144 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 144 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:01:00,832 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:01:00,833 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:01:00,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 74 conjunts are in the unsatisfiable core [2021-06-05 06:01:00,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:01:01,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:01,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:01,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:01,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:01,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:01,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:01,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:01,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:01,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:01,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:01,743 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:01:01,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:01,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:01,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:01,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:01,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:01,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:01,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:01,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:01,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:01,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:01,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:01,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:01,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:01,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:01,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:01,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:01,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:01,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:01,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:01,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:01,757 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:01:01,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:01,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:01,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:01,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:01,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:01,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:01,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:01,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:01,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:01,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:01,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:01,764 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:01:01,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:01,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:01,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:01,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:01,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:01,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:01,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:01,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:01,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:01,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:01,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:01,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:01,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:01,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:01,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:01,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:01,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:01,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:01,777 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:01:01,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:01,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:01,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:01,779 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:01:01,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:01,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:01,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:01,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:01,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:01,783 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:01:01,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:01,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:01,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:01,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:01,786 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:01:01,786 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:01:01,787 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 17 select indices, 17 select index equivalence classes, 36 disjoint index pairs (out of 136 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 162 treesize of output 60 [2021-06-05 06:01:01,788 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:01:01,793 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:01:01,794 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 06:01:01,794 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:168, output treesize:7 [2021-06-05 06:01:01,805 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 3 proven. 211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:01:01,805 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1617465138] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:01:01,805 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:01:01,806 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 22] total 34 [2021-06-05 06:01:01,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767483019] [2021-06-05 06:01:01,806 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-06-05 06:01:01,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:01:01,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-06-05 06:01:01,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=1069, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 06:01:01,806 INFO L87 Difference]: Start difference. First operand 30927 states and 76419 transitions. Second operand has 35 states, 35 states have (on average 3.4857142857142858) internal successors, (122), 34 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:01:03,601 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2021-06-05 06:01:05,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:01:05,249 INFO L93 Difference]: Finished difference Result 45659 states and 113299 transitions. [2021-06-05 06:01:05,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 06:01:05,250 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.4857142857142858) internal successors, (122), 34 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-06-05 06:01:05,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:01:05,296 INFO L225 Difference]: With dead ends: 45659 [2021-06-05 06:01:05,296 INFO L226 Difference]: Without dead ends: 45023 [2021-06-05 06:01:05,297 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 57 SyntacticMatches, 2 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1463 ImplicationChecksByTransitivity, 2583.8ms TimeCoverageRelationStatistics Valid=435, Invalid=4677, Unknown=0, NotChecked=0, Total=5112 [2021-06-05 06:01:05,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45023 states. [2021-06-05 06:01:05,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45023 to 27967. [2021-06-05 06:01:05,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27967 states, 27966 states have (on average 2.473467782307087) internal successors, (69173), 27966 states have internal predecessors, (69173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:01:05,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27967 states to 27967 states and 69173 transitions. [2021-06-05 06:01:05,737 INFO L78 Accepts]: Start accepts. Automaton has 27967 states and 69173 transitions. Word has length 71 [2021-06-05 06:01:05,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:01:05,737 INFO L482 AbstractCegarLoop]: Abstraction has 27967 states and 69173 transitions. [2021-06-05 06:01:05,738 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 3.4857142857142858) internal successors, (122), 34 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:01:05,738 INFO L276 IsEmpty]: Start isEmpty. Operand 27967 states and 69173 transitions. [2021-06-05 06:01:05,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-06-05 06:01:05,767 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:01:05,767 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:01:05,972 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 144 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable146 [2021-06-05 06:01:05,973 INFO L430 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:01:05,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:01:05,973 INFO L82 PathProgramCache]: Analyzing trace with hash -2139698253, now seen corresponding path program 141 times [2021-06-05 06:01:05,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:01:05,973 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735402928] [2021-06-05 06:01:05,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:01:05,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:01:06,399 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 9 proven. 205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:01:06,400 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:01:06,400 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735402928] [2021-06-05 06:01:06,400 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735402928] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:01:06,400 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156501862] [2021-06-05 06:01:06,400 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 145 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 145 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:01:06,434 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-06-05 06:01:06,434 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:01:06,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 74 conjunts are in the unsatisfiable core [2021-06-05 06:01:06,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:01:07,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:07,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:07,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:07,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:07,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:07,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:07,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:07,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:07,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:07,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:07,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:07,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:07,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:07,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:07,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:07,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:07,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:07,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:07,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:07,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:07,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:07,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:07,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:07,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:07,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:07,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:07,480 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:01:07,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:07,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:07,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:07,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:07,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:07,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:07,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:07,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:07,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:07,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:07,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:07,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:07,489 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:01:07,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:07,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:07,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:07,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:07,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:07,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:07,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:07,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:07,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:07,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:07,496 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:01:07,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:07,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:07,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:07,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:07,499 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:01:07,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:07,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:07,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:07,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:07,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:07,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:07,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:07,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:07,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:07,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:07,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:07,506 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:01:07,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:07,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:07,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:07,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:07,510 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:01:07,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:07,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:07,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:07,512 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:01:07,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:07,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:07,514 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:01:07,514 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 17 select indices, 17 select index equivalence classes, 36 disjoint index pairs (out of 136 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 162 treesize of output 60 [2021-06-05 06:01:07,515 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:01:07,521 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:01:07,523 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 06:01:07,523 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:168, output treesize:7 [2021-06-05 06:01:07,534 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 0 proven. 214 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:01:07,534 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156501862] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:01:07,534 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:01:07,534 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 22] total 36 [2021-06-05 06:01:07,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729023653] [2021-06-05 06:01:07,534 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-06-05 06:01:07,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:01:07,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-06-05 06:01:07,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1194, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 06:01:07,535 INFO L87 Difference]: Start difference. First operand 27967 states and 69173 transitions. Second operand has 37 states, 37 states have (on average 3.3513513513513513) internal successors, (124), 36 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:01:09,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:01:09,390 INFO L93 Difference]: Finished difference Result 52727 states and 131165 transitions. [2021-06-05 06:01:09,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-05 06:01:09,390 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.3513513513513513) internal successors, (124), 36 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-06-05 06:01:09,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:01:09,455 INFO L225 Difference]: With dead ends: 52727 [2021-06-05 06:01:09,456 INFO L226 Difference]: Without dead ends: 52639 [2021-06-05 06:01:09,456 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 55 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1195 ImplicationChecksByTransitivity, 2030.2ms TimeCoverageRelationStatistics Valid=379, Invalid=4043, Unknown=0, NotChecked=0, Total=4422 [2021-06-05 06:01:09,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52639 states. [2021-06-05 06:01:09,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52639 to 26831. [2021-06-05 06:01:09,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26831 states, 26830 states have (on average 2.474133432724562) internal successors, (66381), 26830 states have internal predecessors, (66381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:01:09,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26831 states to 26831 states and 66381 transitions. [2021-06-05 06:01:09,934 INFO L78 Accepts]: Start accepts. Automaton has 26831 states and 66381 transitions. Word has length 71 [2021-06-05 06:01:09,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:01:09,934 INFO L482 AbstractCegarLoop]: Abstraction has 26831 states and 66381 transitions. [2021-06-05 06:01:09,934 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 3.3513513513513513) internal successors, (124), 36 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:01:09,934 INFO L276 IsEmpty]: Start isEmpty. Operand 26831 states and 66381 transitions. [2021-06-05 06:01:09,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-06-05 06:01:09,955 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:01:09,955 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:01:10,155 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 145 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable147 [2021-06-05 06:01:10,156 INFO L430 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:01:10,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:01:10,156 INFO L82 PathProgramCache]: Analyzing trace with hash -1492082765, now seen corresponding path program 142 times [2021-06-05 06:01:10,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:01:10,156 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023975030] [2021-06-05 06:01:10,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:01:10,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:01:10,589 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 9 proven. 205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:01:10,589 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:01:10,589 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023975030] [2021-06-05 06:01:10,589 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023975030] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:01:10,589 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039096742] [2021-06-05 06:01:10,589 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 146 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 146 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:01:10,621 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:01:10,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:01:10,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 74 conjunts are in the unsatisfiable core [2021-06-05 06:01:10,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:01:11,653 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:01:11,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:11,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:11,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:11,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:11,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:11,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:11,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:11,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:11,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:11,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:11,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:11,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:11,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:11,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:11,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:11,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:11,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:11,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:11,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:11,666 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:01:11,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:11,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:11,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:11,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:11,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:11,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:11,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:11,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:11,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:11,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:11,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:11,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:11,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:11,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:11,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:11,677 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:01:11,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:11,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:11,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:11,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:11,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:11,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:11,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:11,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:11,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:11,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:11,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:11,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:11,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:11,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:11,686 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:01:11,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:11,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:11,688 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:01:11,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:11,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:11,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:11,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:11,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:11,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:11,692 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:01:11,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:11,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:11,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:11,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:11,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:11,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:11,697 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:01:11,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:11,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:11,699 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:01:11,699 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 17 select indices, 17 select index equivalence classes, 36 disjoint index pairs (out of 136 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 162 treesize of output 60 [2021-06-05 06:01:11,700 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:01:11,705 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:01:11,707 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 06:01:11,707 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:168, output treesize:7 [2021-06-05 06:01:11,718 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 9 proven. 205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:01:11,718 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2039096742] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:01:11,718 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:01:11,718 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 22] total 37 [2021-06-05 06:01:11,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225846119] [2021-06-05 06:01:11,719 INFO L462 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-06-05 06:01:11,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:01:11,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-06-05 06:01:11,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=1259, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 06:01:11,719 INFO L87 Difference]: Start difference. First operand 26831 states and 66381 transitions. Second operand has 38 states, 38 states have (on average 3.1578947368421053) internal successors, (120), 37 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:01:13,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:01:13,565 INFO L93 Difference]: Finished difference Result 48487 states and 120645 transitions. [2021-06-05 06:01:13,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 06:01:13,566 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.1578947368421053) internal successors, (120), 37 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-06-05 06:01:13,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:01:13,621 INFO L225 Difference]: With dead ends: 48487 [2021-06-05 06:01:13,621 INFO L226 Difference]: Without dead ends: 48399 [2021-06-05 06:01:13,622 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 54 SyntacticMatches, 2 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1241 ImplicationChecksByTransitivity, 2068.0ms TimeCoverageRelationStatistics Valid=406, Invalid=4286, Unknown=0, NotChecked=0, Total=4692 [2021-06-05 06:01:13,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48399 states. [2021-06-05 06:01:14,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48399 to 26959. [2021-06-05 06:01:14,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26959 states, 26958 states have (on average 2.4742562504636845) internal successors, (66701), 26958 states have internal predecessors, (66701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:01:14,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26959 states to 26959 states and 66701 transitions. [2021-06-05 06:01:14,088 INFO L78 Accepts]: Start accepts. Automaton has 26959 states and 66701 transitions. Word has length 71 [2021-06-05 06:01:14,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:01:14,088 INFO L482 AbstractCegarLoop]: Abstraction has 26959 states and 66701 transitions. [2021-06-05 06:01:14,088 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 3.1578947368421053) internal successors, (120), 37 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:01:14,088 INFO L276 IsEmpty]: Start isEmpty. Operand 26959 states and 66701 transitions. [2021-06-05 06:01:14,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-06-05 06:01:14,109 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:01:14,109 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:01:14,310 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148,146 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:01:14,310 INFO L430 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:01:14,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:01:14,310 INFO L82 PathProgramCache]: Analyzing trace with hash -693515853, now seen corresponding path program 143 times [2021-06-05 06:01:14,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:01:14,310 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126954311] [2021-06-05 06:01:14,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:01:14,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:01:14,718 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 9 proven. 205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:01:14,718 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:01:14,718 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126954311] [2021-06-05 06:01:14,719 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126954311] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:01:14,719 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926602416] [2021-06-05 06:01:14,719 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 147 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 147 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:01:14,866 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-06-05 06:01:14,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:01:14,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 74 conjunts are in the unsatisfiable core [2021-06-05 06:01:14,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:01:15,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:15,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:15,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:15,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:15,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:15,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:15,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:15,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:15,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:15,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:15,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:15,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:15,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:15,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:15,835 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:01:15,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:15,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:15,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:15,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:15,837 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:01:15,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:15,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:15,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:15,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:15,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:15,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:15,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:15,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:15,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:15,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:15,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:15,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:15,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:15,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:15,847 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:01:15,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:15,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:15,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:15,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:15,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:15,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:15,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:15,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:15,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:15,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:15,854 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:01:15,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:15,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:15,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:15,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:15,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:15,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:15,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:15,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:15,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:15,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:15,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:15,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:15,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:15,863 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:01:15,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:15,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:15,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:15,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:15,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:15,867 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:01:15,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:15,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:15,869 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:01:15,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:15,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:15,870 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:01:15,871 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 17 select indices, 17 select index equivalence classes, 36 disjoint index pairs (out of 136 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 162 treesize of output 60 [2021-06-05 06:01:15,872 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:01:15,877 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:01:15,878 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 06:01:15,878 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:168, output treesize:7 [2021-06-05 06:01:15,889 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 0 proven. 214 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:01:15,889 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [926602416] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:01:15,889 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:01:15,889 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 22] total 37 [2021-06-05 06:01:15,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642034422] [2021-06-05 06:01:15,889 INFO L462 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-06-05 06:01:15,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:01:15,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-06-05 06:01:15,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=1259, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 06:01:15,890 INFO L87 Difference]: Start difference. First operand 26959 states and 66701 transitions. Second operand has 38 states, 38 states have (on average 3.263157894736842) internal successors, (124), 37 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:01:17,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:01:17,756 INFO L93 Difference]: Finished difference Result 47239 states and 117413 transitions. [2021-06-05 06:01:17,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 06:01:17,757 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.263157894736842) internal successors, (124), 37 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-06-05 06:01:17,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:01:17,809 INFO L225 Difference]: With dead ends: 47239 [2021-06-05 06:01:17,810 INFO L226 Difference]: Without dead ends: 47199 [2021-06-05 06:01:17,810 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 54 SyntacticMatches, 2 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1240 ImplicationChecksByTransitivity, 1935.8ms TimeCoverageRelationStatistics Valid=406, Invalid=4286, Unknown=0, NotChecked=0, Total=4692 [2021-06-05 06:01:17,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47199 states. [2021-06-05 06:01:18,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47199 to 27167. [2021-06-05 06:01:18,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27167 states, 27166 states have (on average 2.4744533608186705) internal successors, (67221), 27166 states have internal predecessors, (67221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:01:18,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27167 states to 27167 states and 67221 transitions. [2021-06-05 06:01:18,238 INFO L78 Accepts]: Start accepts. Automaton has 27167 states and 67221 transitions. Word has length 71 [2021-06-05 06:01:18,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:01:18,238 INFO L482 AbstractCegarLoop]: Abstraction has 27167 states and 67221 transitions. [2021-06-05 06:01:18,238 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 3.263157894736842) internal successors, (124), 37 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:01:18,238 INFO L276 IsEmpty]: Start isEmpty. Operand 27167 states and 67221 transitions. [2021-06-05 06:01:18,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-06-05 06:01:18,272 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:01:18,272 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:01:18,480 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 147 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable149 [2021-06-05 06:01:18,481 INFO L430 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:01:18,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:01:18,481 INFO L82 PathProgramCache]: Analyzing trace with hash -1586749517, now seen corresponding path program 144 times [2021-06-05 06:01:18,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:01:18,481 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845551547] [2021-06-05 06:01:18,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:01:18,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:01:18,989 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 9 proven. 205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:01:18,989 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:01:18,989 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845551547] [2021-06-05 06:01:18,989 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845551547] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:01:18,989 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95882091] [2021-06-05 06:01:18,989 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 148 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 148 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:01:19,024 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-06-05 06:01:19,024 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:01:19,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 76 conjunts are in the unsatisfiable core [2021-06-05 06:01:19,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:01:19,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:19,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:19,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:19,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:19,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:19,997 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:01:19,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:19,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:19,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:19,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:20,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:20,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:20,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:20,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:20,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:20,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:20,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:20,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:20,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:20,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:20,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:20,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:20,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:20,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:20,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:20,010 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:01:20,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:20,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:20,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:20,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:20,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:20,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:20,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:20,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:20,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:20,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:20,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:20,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:20,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:20,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:20,019 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:01:20,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:20,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:20,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:20,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:20,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:20,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:20,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:20,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:20,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:20,026 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:01:20,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:20,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:20,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:20,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:20,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:20,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:20,030 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:01:20,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:20,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:20,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:20,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:20,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:20,034 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:01:20,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:20,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:20,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:20,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:20,037 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:01:20,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:20,038 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:01:20,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:20,039 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 17 select indices, 17 select index equivalence classes, 36 disjoint index pairs (out of 136 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 162 treesize of output 60 [2021-06-05 06:01:20,041 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:01:20,046 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:01:20,047 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 06:01:20,047 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:168, output treesize:7 [2021-06-05 06:01:20,057 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 0 proven. 214 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:01:20,058 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95882091] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:01:20,058 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:01:20,058 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 38 [2021-06-05 06:01:20,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011404751] [2021-06-05 06:01:20,058 INFO L462 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-06-05 06:01:20,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:01:20,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-06-05 06:01:20,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1330, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 06:01:20,058 INFO L87 Difference]: Start difference. First operand 27167 states and 67221 transitions. Second operand has 39 states, 39 states have (on average 3.1794871794871793) internal successors, (124), 38 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:01:22,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:01:22,140 INFO L93 Difference]: Finished difference Result 46591 states and 115911 transitions. [2021-06-05 06:01:22,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 06:01:22,140 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.1794871794871793) internal successors, (124), 38 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-06-05 06:01:22,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:01:22,192 INFO L225 Difference]: With dead ends: 46591 [2021-06-05 06:01:22,193 INFO L226 Difference]: Without dead ends: 46031 [2021-06-05 06:01:22,193 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 53 SyntacticMatches, 2 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1274 ImplicationChecksByTransitivity, 1974.1ms TimeCoverageRelationStatistics Valid=412, Invalid=4418, Unknown=0, NotChecked=0, Total=4830 [2021-06-05 06:01:22,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46031 states. [2021-06-05 06:01:22,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46031 to 19935. [2021-06-05 06:01:22,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19935 states, 19934 states have (on average 2.4840473562757097) internal successors, (49517), 19934 states have internal predecessors, (49517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:01:22,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19935 states to 19935 states and 49517 transitions. [2021-06-05 06:01:22,651 INFO L78 Accepts]: Start accepts. Automaton has 19935 states and 49517 transitions. Word has length 71 [2021-06-05 06:01:22,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:01:22,651 INFO L482 AbstractCegarLoop]: Abstraction has 19935 states and 49517 transitions. [2021-06-05 06:01:22,651 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 3.1794871794871793) internal successors, (124), 38 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:01:22,652 INFO L276 IsEmpty]: Start isEmpty. Operand 19935 states and 49517 transitions. [2021-06-05 06:01:22,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-06-05 06:01:22,667 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:01:22,667 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:01:22,867 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150,148 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:01:22,867 INFO L430 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:01:22,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:01:22,868 INFO L82 PathProgramCache]: Analyzing trace with hash -1405435469, now seen corresponding path program 145 times [2021-06-05 06:01:22,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:01:22,868 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344612057] [2021-06-05 06:01:22,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:01:22,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:01:23,281 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 9 proven. 205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:01:23,281 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:01:23,281 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344612057] [2021-06-05 06:01:23,282 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344612057] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:01:23,282 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789931621] [2021-06-05 06:01:23,282 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 149 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 149 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:01:23,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:01:23,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 74 conjunts are in the unsatisfiable core [2021-06-05 06:01:23,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:01:24,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:24,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:24,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:24,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:24,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:24,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:24,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:24,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:24,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:24,286 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:01:24,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:24,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:24,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:24,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:24,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:24,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:24,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:24,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:24,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:24,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:24,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:24,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:24,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:24,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:24,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:24,296 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:01:24,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:24,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:24,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:24,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:24,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:24,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:24,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:24,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:24,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:24,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:24,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:24,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:24,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:24,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:24,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:24,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:24,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:24,308 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:01:24,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:24,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:24,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:24,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:24,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:24,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:24,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:24,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:24,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:24,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:24,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:24,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:24,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:24,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:24,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:24,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:24,319 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:01:24,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:24,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:24,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:24,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:24,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:24,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:24,323 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:01:24,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:24,324 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:01:24,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:24,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:24,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:24,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:24,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:24,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:24,329 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:01:24,329 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:01:24,330 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 17 select indices, 17 select index equivalence classes, 36 disjoint index pairs (out of 136 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 162 treesize of output 60 [2021-06-05 06:01:24,331 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:01:24,336 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:01:24,337 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 06:01:24,337 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:168, output treesize:7 [2021-06-05 06:01:24,347 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 9 proven. 205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:01:24,347 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1789931621] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:01:24,347 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:01:24,347 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 38 [2021-06-05 06:01:24,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095476622] [2021-06-05 06:01:24,347 INFO L462 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-06-05 06:01:24,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:01:24,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-06-05 06:01:24,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1330, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 06:01:24,348 INFO L87 Difference]: Start difference. First operand 19935 states and 49517 transitions. Second operand has 39 states, 39 states have (on average 3.076923076923077) internal successors, (120), 38 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:01:27,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:01:27,306 INFO L93 Difference]: Finished difference Result 39543 states and 98661 transitions. [2021-06-05 06:01:27,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 06:01:27,306 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.076923076923077) internal successors, (120), 38 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-06-05 06:01:27,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:01:27,349 INFO L225 Difference]: With dead ends: 39543 [2021-06-05 06:01:27,349 INFO L226 Difference]: Without dead ends: 39455 [2021-06-05 06:01:27,349 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 53 SyntacticMatches, 2 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1263 ImplicationChecksByTransitivity, 1995.3ms TimeCoverageRelationStatistics Valid=412, Invalid=4418, Unknown=0, NotChecked=0, Total=4830 [2021-06-05 06:01:27,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39455 states. [2021-06-05 06:01:27,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39455 to 19711. [2021-06-05 06:01:27,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19711 states, 19710 states have (on average 2.4838660578386604) internal successors, (48957), 19710 states have internal predecessors, (48957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:01:27,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19711 states to 19711 states and 48957 transitions. [2021-06-05 06:01:27,696 INFO L78 Accepts]: Start accepts. Automaton has 19711 states and 48957 transitions. Word has length 71 [2021-06-05 06:01:27,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:01:27,697 INFO L482 AbstractCegarLoop]: Abstraction has 19711 states and 48957 transitions. [2021-06-05 06:01:27,697 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 3.076923076923077) internal successors, (120), 38 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:01:27,697 INFO L276 IsEmpty]: Start isEmpty. Operand 19711 states and 48957 transitions. [2021-06-05 06:01:27,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-06-05 06:01:27,712 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:01:27,712 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:01:27,912 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151,149 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:01:27,913 INFO L430 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:01:27,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:01:27,913 INFO L82 PathProgramCache]: Analyzing trace with hash -606868557, now seen corresponding path program 146 times [2021-06-05 06:01:27,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:01:27,913 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489925887] [2021-06-05 06:01:27,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:01:27,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:01:28,326 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 9 proven. 205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:01:28,327 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:01:28,327 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489925887] [2021-06-05 06:01:28,327 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489925887] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:01:28,327 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499880914] [2021-06-05 06:01:28,327 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 150 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 150 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:01:28,359 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:01:28,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:01:28,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 74 conjunts are in the unsatisfiable core [2021-06-05 06:01:28,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:01:29,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:29,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:29,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:29,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:29,327 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:01:29,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:29,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:29,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:29,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:29,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:29,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:29,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:29,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:29,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:29,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:29,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:29,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:29,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:29,346 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:01:29,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:29,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:29,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:29,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:29,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:29,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:29,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:29,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:29,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:29,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:29,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:29,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:29,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:29,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:29,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:29,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:29,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:29,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:29,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:29,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:29,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:29,361 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:01:29,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:29,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:29,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:29,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:29,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:29,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:29,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:29,366 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:01:29,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:29,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:29,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:29,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:29,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:29,370 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:01:29,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:29,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:29,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:29,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:29,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:29,374 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:01:29,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:29,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:29,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:29,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:29,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:29,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:29,378 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:01:29,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:29,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:29,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:29,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:29,381 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:01:29,382 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 17 select indices, 17 select index equivalence classes, 36 disjoint index pairs (out of 136 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 162 treesize of output 60 [2021-06-05 06:01:29,383 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:01:29,388 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:01:29,389 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 06:01:29,389 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:168, output treesize:7 [2021-06-05 06:01:29,400 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 0 proven. 214 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:01:29,400 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [499880914] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:01:29,400 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:01:29,400 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 38 [2021-06-05 06:01:29,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932855707] [2021-06-05 06:01:29,400 INFO L462 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-06-05 06:01:29,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:01:29,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-06-05 06:01:29,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1330, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 06:01:29,401 INFO L87 Difference]: Start difference. First operand 19711 states and 48957 transitions. Second operand has 39 states, 39 states have (on average 3.1794871794871793) internal successors, (124), 38 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:01:31,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:01:31,915 INFO L93 Difference]: Finished difference Result 39095 states and 97429 transitions. [2021-06-05 06:01:31,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 06:01:31,916 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.1794871794871793) internal successors, (124), 38 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-06-05 06:01:31,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:01:32,033 INFO L225 Difference]: With dead ends: 39095 [2021-06-05 06:01:32,033 INFO L226 Difference]: Without dead ends: 39055 [2021-06-05 06:01:32,033 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 53 SyntacticMatches, 2 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1261 ImplicationChecksByTransitivity, 1966.5ms TimeCoverageRelationStatistics Valid=412, Invalid=4418, Unknown=0, NotChecked=0, Total=4830 [2021-06-05 06:01:32,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39055 states. [2021-06-05 06:01:32,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39055 to 19647. [2021-06-05 06:01:32,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19647 states, 19646 states have (on average 2.48381349893108) internal successors, (48797), 19646 states have internal predecessors, (48797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:01:32,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19647 states to 19647 states and 48797 transitions. [2021-06-05 06:01:32,302 INFO L78 Accepts]: Start accepts. Automaton has 19647 states and 48797 transitions. Word has length 71 [2021-06-05 06:01:32,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:01:32,302 INFO L482 AbstractCegarLoop]: Abstraction has 19647 states and 48797 transitions. [2021-06-05 06:01:32,302 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 3.1794871794871793) internal successors, (124), 38 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:01:32,302 INFO L276 IsEmpty]: Start isEmpty. Operand 19647 states and 48797 transitions. [2021-06-05 06:01:32,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-06-05 06:01:32,321 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:01:32,321 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:01:32,521 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152,150 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:01:32,521 INFO L430 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:01:32,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:01:32,522 INFO L82 PathProgramCache]: Analyzing trace with hash -1791354445, now seen corresponding path program 147 times [2021-06-05 06:01:32,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:01:32,522 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854166215] [2021-06-05 06:01:32,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:01:32,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:01:32,867 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 9 proven. 205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:01:32,867 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:01:32,867 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854166215] [2021-06-05 06:01:32,868 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854166215] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:01:32,868 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086016137] [2021-06-05 06:01:32,868 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 151 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 151 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:01:32,903 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-06-05 06:01:32,904 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:01:32,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 75 conjunts are in the unsatisfiable core [2021-06-05 06:01:32,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:01:34,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:34,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:34,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:34,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:34,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:34,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:34,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:34,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:34,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:34,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:34,086 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:01:34,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:34,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:34,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:34,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:34,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:34,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:34,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:34,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:34,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:34,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:34,093 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:01:34,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:34,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:34,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:34,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:34,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:34,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:34,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:34,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:34,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:34,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:34,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:34,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:34,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:34,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:34,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:34,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:34,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:34,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:34,105 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:01:34,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:34,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:34,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:34,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:34,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:34,109 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:01:34,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:34,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:34,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:34,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:34,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:34,113 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:01:34,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:34,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:34,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:34,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:34,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:34,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:34,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:34,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:34,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:34,119 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:01:34,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:34,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:34,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:34,121 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:01:34,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:34,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:34,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:34,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:34,124 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:01:34,125 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 17 select indices, 17 select index equivalence classes, 36 disjoint index pairs (out of 136 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 160 treesize of output 60 [2021-06-05 06:01:34,126 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:01:34,139 INFO L628 ElimStorePlain]: treesize reduction 5, result has 81.5 percent of original size [2021-06-05 06:01:34,140 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 06:01:34,140 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:180, output treesize:7 [2021-06-05 06:01:34,151 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 0 proven. 214 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:01:34,151 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1086016137] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:01:34,151 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:01:34,151 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 22] total 35 [2021-06-05 06:01:34,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146338084] [2021-06-05 06:01:34,151 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-06-05 06:01:34,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:01:34,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-06-05 06:01:34,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=1153, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 06:01:34,152 INFO L87 Difference]: Start difference. First operand 19647 states and 48797 transitions. Second operand has 36 states, 36 states have (on average 3.4444444444444446) internal successors, (124), 35 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:01:39,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:01:39,531 INFO L93 Difference]: Finished difference Result 28039 states and 69373 transitions. [2021-06-05 06:01:39,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-05 06:01:39,532 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.4444444444444446) internal successors, (124), 35 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-06-05 06:01:39,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:01:39,559 INFO L225 Difference]: With dead ends: 28039 [2021-06-05 06:01:39,559 INFO L226 Difference]: Without dead ends: 27455 [2021-06-05 06:01:39,560 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 56 SyntacticMatches, 2 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1132 ImplicationChecksByTransitivity, 3441.0ms TimeCoverageRelationStatistics Valid=429, Invalid=4683, Unknown=0, NotChecked=0, Total=5112 [2021-06-05 06:01:39,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27455 states. [2021-06-05 06:01:39,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27455 to 20287. [2021-06-05 06:01:39,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20287 states, 20286 states have (on average 2.4823523612343488) internal successors, (50357), 20286 states have internal predecessors, (50357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:01:39,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20287 states to 20287 states and 50357 transitions. [2021-06-05 06:01:39,824 INFO L78 Accepts]: Start accepts. Automaton has 20287 states and 50357 transitions. Word has length 71 [2021-06-05 06:01:39,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:01:39,824 INFO L482 AbstractCegarLoop]: Abstraction has 20287 states and 50357 transitions. [2021-06-05 06:01:39,824 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 3.4444444444444446) internal successors, (124), 35 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:01:39,824 INFO L276 IsEmpty]: Start isEmpty. Operand 20287 states and 50357 transitions. [2021-06-05 06:01:39,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-06-05 06:01:39,844 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:01:39,844 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:01:40,052 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153,151 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:01:40,053 INFO L430 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:01:40,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:01:40,053 INFO L82 PathProgramCache]: Analyzing trace with hash 2073914291, now seen corresponding path program 148 times [2021-06-05 06:01:40,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:01:40,053 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238420897] [2021-06-05 06:01:40,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:01:40,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:01:40,462 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 9 proven. 205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:01:40,462 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:01:40,462 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238420897] [2021-06-05 06:01:40,462 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238420897] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:01:40,462 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462955862] [2021-06-05 06:01:40,462 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 152 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 152 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:01:40,494 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:01:40,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:01:40,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 74 conjunts are in the unsatisfiable core [2021-06-05 06:01:40,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:01:41,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:41,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:41,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:41,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:41,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:41,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:41,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:41,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:41,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:41,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:41,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:41,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:41,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:41,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:41,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:41,464 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:01:41,464 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:01:41,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:41,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:41,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:41,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:41,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:41,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:41,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:41,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:41,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:41,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:41,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:41,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:41,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:41,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:41,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:41,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:41,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:41,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:41,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:41,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:41,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:41,478 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:01:41,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:41,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:41,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:41,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:41,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:41,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:41,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:41,484 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:01:41,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:41,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:41,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:41,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:41,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:41,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:41,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:41,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:41,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:41,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:41,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:41,491 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:01:41,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:41,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:41,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:41,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:41,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:41,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:41,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:41,496 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:01:41,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:41,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:41,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:41,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:41,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:41,500 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:01:41,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:41,501 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:01:41,502 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 17 select indices, 17 select index equivalence classes, 36 disjoint index pairs (out of 136 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 162 treesize of output 60 [2021-06-05 06:01:41,503 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:01:41,509 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:01:41,510 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 06:01:41,511 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:168, output treesize:7 [2021-06-05 06:01:41,521 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 9 proven. 205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:01:41,521 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1462955862] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:01:41,521 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:01:41,521 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 38 [2021-06-05 06:01:41,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689429598] [2021-06-05 06:01:41,521 INFO L462 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-06-05 06:01:41,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:01:41,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-06-05 06:01:41,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=1326, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 06:01:41,522 INFO L87 Difference]: Start difference. First operand 20287 states and 50357 transitions. Second operand has 39 states, 39 states have (on average 3.076923076923077) internal successors, (120), 38 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:01:43,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:01:43,402 INFO L93 Difference]: Finished difference Result 32279 states and 80813 transitions. [2021-06-05 06:01:43,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-05 06:01:43,402 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.076923076923077) internal successors, (120), 38 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-06-05 06:01:43,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:01:43,435 INFO L225 Difference]: With dead ends: 32279 [2021-06-05 06:01:43,435 INFO L226 Difference]: Without dead ends: 31999 [2021-06-05 06:01:43,436 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 53 SyntacticMatches, 2 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1160 ImplicationChecksByTransitivity, 1951.5ms TimeCoverageRelationStatistics Valid=404, Invalid=4152, Unknown=0, NotChecked=0, Total=4556 [2021-06-05 06:01:43,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31999 states. [2021-06-05 06:01:43,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31999 to 20719. [2021-06-05 06:01:43,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20719 states, 20718 states have (on average 2.4811757891688386) internal successors, (51405), 20718 states have internal predecessors, (51405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:01:43,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20719 states to 20719 states and 51405 transitions. [2021-06-05 06:01:43,760 INFO L78 Accepts]: Start accepts. Automaton has 20719 states and 51405 transitions. Word has length 71 [2021-06-05 06:01:43,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:01:43,760 INFO L482 AbstractCegarLoop]: Abstraction has 20719 states and 51405 transitions. [2021-06-05 06:01:43,760 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 3.076923076923077) internal successors, (120), 38 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:01:43,760 INFO L276 IsEmpty]: Start isEmpty. Operand 20719 states and 51405 transitions. [2021-06-05 06:01:43,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-06-05 06:01:43,777 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:01:43,777 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:01:43,977 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154,152 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:01:43,978 INFO L430 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:01:43,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:01:43,978 INFO L82 PathProgramCache]: Analyzing trace with hash -1422486093, now seen corresponding path program 149 times [2021-06-05 06:01:43,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:01:43,978 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525901376] [2021-06-05 06:01:43,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:01:43,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:01:44,388 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 9 proven. 205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:01:44,388 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:01:44,388 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525901376] [2021-06-05 06:01:44,388 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525901376] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:01:44,388 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301206378] [2021-06-05 06:01:44,388 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 153 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 153 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:01:44,423 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-06-05 06:01:44,424 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:01:44,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 75 conjunts are in the unsatisfiable core [2021-06-05 06:01:44,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:01:45,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:45,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:45,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:45,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:45,487 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:01:45,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:45,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:45,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:45,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:45,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:45,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:45,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:45,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:45,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:45,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:45,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:45,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:45,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:45,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:45,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:45,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:45,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:45,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:45,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:45,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:45,501 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:01:45,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:45,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:45,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:45,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:45,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:45,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:45,505 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:01:45,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:45,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:45,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:45,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:45,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:45,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:45,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:45,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:45,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:45,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:45,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:45,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:45,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:45,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:45,515 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:01:45,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:45,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:45,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:45,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:45,519 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:01:45,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:45,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:45,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:45,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:45,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:45,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:45,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:45,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:45,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:45,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:45,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:45,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:45,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:45,532 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:01:45,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:45,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:45,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:45,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:45,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:45,538 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:01:45,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:45,539 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:01:45,540 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 17 select indices, 17 select index equivalence classes, 36 disjoint index pairs (out of 136 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 162 treesize of output 60 [2021-06-05 06:01:45,542 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:01:45,549 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:01:45,550 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 06:01:45,550 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:170, output treesize:7 [2021-06-05 06:01:45,563 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 0 proven. 214 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:01:45,563 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1301206378] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:01:45,563 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:01:45,563 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 39 [2021-06-05 06:01:45,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000592364] [2021-06-05 06:01:45,563 INFO L462 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-06-05 06:01:45,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:01:45,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-06-05 06:01:45,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=1443, Unknown=0, NotChecked=0, Total=1560 [2021-06-05 06:01:45,564 INFO L87 Difference]: Start difference. First operand 20719 states and 51405 transitions. Second operand has 40 states, 40 states have (on average 3.15) internal successors, (126), 39 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:01:50,912 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 83 [2021-06-05 06:01:51,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:01:51,690 INFO L93 Difference]: Finished difference Result 28243 states and 70241 transitions. [2021-06-05 06:01:51,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-06-05 06:01:51,690 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.15) internal successors, (126), 39 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-06-05 06:01:51,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:01:51,715 INFO L225 Difference]: With dead ends: 28243 [2021-06-05 06:01:51,715 INFO L226 Difference]: Without dead ends: 27487 [2021-06-05 06:01:51,715 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1363 ImplicationChecksByTransitivity, 4440.8ms TimeCoverageRelationStatistics Valid=524, Invalid=6448, Unknown=0, NotChecked=0, Total=6972 [2021-06-05 06:01:51,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27487 states. [2021-06-05 06:01:51,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27487 to 21215. [2021-06-05 06:01:51,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21215 states, 21214 states have (on average 2.4801074761949655) internal successors, (52613), 21214 states have internal predecessors, (52613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:01:51,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21215 states to 21215 states and 52613 transitions. [2021-06-05 06:01:51,963 INFO L78 Accepts]: Start accepts. Automaton has 21215 states and 52613 transitions. Word has length 71 [2021-06-05 06:01:51,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:01:51,964 INFO L482 AbstractCegarLoop]: Abstraction has 21215 states and 52613 transitions. [2021-06-05 06:01:51,964 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 40 states, 40 states have (on average 3.15) internal successors, (126), 39 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:01:51,964 INFO L276 IsEmpty]: Start isEmpty. Operand 21215 states and 52613 transitions. [2021-06-05 06:01:51,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-06-05 06:01:51,979 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:01:51,979 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:01:52,180 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 153 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable155 [2021-06-05 06:01:52,180 INFO L430 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:01:52,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:01:52,180 INFO L82 PathProgramCache]: Analyzing trace with hash -979191885, now seen corresponding path program 150 times [2021-06-05 06:01:52,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:01:52,180 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902559749] [2021-06-05 06:01:52,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:01:52,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:01:52,593 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 9 proven. 205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:01:52,593 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:01:52,593 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902559749] [2021-06-05 06:01:52,593 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902559749] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:01:52,593 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205675686] [2021-06-05 06:01:52,593 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 154 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 154 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:01:52,629 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2021-06-05 06:01:52,629 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:01:52,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 76 conjunts are in the unsatisfiable core [2021-06-05 06:01:52,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:01:54,055 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:01:54,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:54,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:54,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:54,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:54,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:54,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:54,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:54,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:54,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:54,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:54,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:54,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:54,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:54,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:54,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:54,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:54,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:54,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:54,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:54,068 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:01:54,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:54,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:54,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:54,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:54,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:54,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:54,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:54,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:54,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:54,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:54,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:54,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:54,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:54,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:54,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:54,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:54,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:54,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:54,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:54,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:54,082 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:01:54,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:54,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:54,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:54,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:54,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:54,086 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:01:54,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:54,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:54,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:54,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:54,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:54,089 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:01:54,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:54,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:54,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:54,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:54,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:54,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:54,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:54,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:54,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:54,096 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:01:54,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:54,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:54,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:54,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:54,099 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:01:54,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:54,100 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:01:54,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:01:54,102 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 17 select indices, 17 select index equivalence classes, 36 disjoint index pairs (out of 136 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 158 treesize of output 60 [2021-06-05 06:01:54,103 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:01:54,117 INFO L628 ElimStorePlain]: treesize reduction 5, result has 80.0 percent of original size [2021-06-05 06:01:54,118 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 06:01:54,118 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:176, output treesize:7 [2021-06-05 06:01:54,128 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 0 proven. 214 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:01:54,128 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205675686] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:01:54,128 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:01:54,129 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 38 [2021-06-05 06:01:54,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283420809] [2021-06-05 06:01:54,129 INFO L462 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-06-05 06:01:54,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:01:54,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-06-05 06:01:54,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1367, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 06:01:54,129 INFO L87 Difference]: Start difference. First operand 21215 states and 52613 transitions. Second operand has 39 states, 39 states have (on average 3.1794871794871793) internal successors, (124), 38 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:01:58,357 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2021-06-05 06:01:59,133 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 98 [2021-06-05 06:02:04,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:02:04,993 INFO L93 Difference]: Finished difference Result 35451 states and 87865 transitions. [2021-06-05 06:02:04,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2021-06-05 06:02:04,993 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.1794871794871793) internal successors, (124), 38 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-06-05 06:02:04,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:02:05,028 INFO L225 Difference]: With dead ends: 35451 [2021-06-05 06:02:05,028 INFO L226 Difference]: Without dead ends: 34327 [2021-06-05 06:02:05,029 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 53 SyntacticMatches, 2 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3934 ImplicationChecksByTransitivity, 8697.2ms TimeCoverageRelationStatistics Valid=1047, Invalid=13715, Unknown=0, NotChecked=0, Total=14762 [2021-06-05 06:02:05,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34327 states. [2021-06-05 06:02:05,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34327 to 22719. [2021-06-05 06:02:05,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22719 states, 22718 states have (on average 2.485562109340611) internal successors, (56467), 22718 states have internal predecessors, (56467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:02:05,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22719 states to 22719 states and 56467 transitions. [2021-06-05 06:02:05,326 INFO L78 Accepts]: Start accepts. Automaton has 22719 states and 56467 transitions. Word has length 71 [2021-06-05 06:02:05,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:02:05,326 INFO L482 AbstractCegarLoop]: Abstraction has 22719 states and 56467 transitions. [2021-06-05 06:02:05,326 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 3.1794871794871793) internal successors, (124), 38 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:02:05,326 INFO L276 IsEmpty]: Start isEmpty. Operand 22719 states and 56467 transitions. [2021-06-05 06:02:05,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-06-05 06:02:05,343 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:02:05,343 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:02:05,543 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156,154 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:02:05,543 INFO L430 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:02:05,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:02:05,544 INFO L82 PathProgramCache]: Analyzing trace with hash 1108696499, now seen corresponding path program 151 times [2021-06-05 06:02:05,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:02:05,544 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277015297] [2021-06-05 06:02:05,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:02:05,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:02:05,954 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 9 proven. 205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:02:05,954 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:02:05,954 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277015297] [2021-06-05 06:02:05,954 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277015297] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:02:05,955 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369076755] [2021-06-05 06:02:05,955 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 155 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 155 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:02:05,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:02:05,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 74 conjunts are in the unsatisfiable core [2021-06-05 06:02:05,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:02:06,883 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:02:06,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:06,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:06,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:06,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:06,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:06,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:06,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:06,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:06,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:06,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:06,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:06,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:06,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:06,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:06,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:06,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:06,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:06,895 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:02:06,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:06,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:06,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:06,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:06,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:06,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:06,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:06,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:06,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:06,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:06,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:06,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:06,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:06,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:06,905 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:02:06,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:06,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:06,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:06,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:06,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:06,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:06,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:06,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:06,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:06,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:06,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:06,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:06,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:06,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:06,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:06,915 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:02:06,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:06,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:06,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:06,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:06,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:06,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:06,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:06,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:06,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:06,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:06,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:06,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:06,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:06,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:06,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:06,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:06,926 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:02:06,926 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:02:06,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:06,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:06,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:06,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:06,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:06,930 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:02:06,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:06,931 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:02:06,932 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 17 select indices, 17 select index equivalence classes, 36 disjoint index pairs (out of 136 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 162 treesize of output 60 [2021-06-05 06:02:06,933 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:02:06,938 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:02:06,939 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 06:02:06,939 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:168, output treesize:7 [2021-06-05 06:02:06,949 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 13 proven. 201 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:02:06,949 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1369076755] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:02:06,949 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:02:06,949 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 38 [2021-06-05 06:02:06,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645999166] [2021-06-05 06:02:06,950 INFO L462 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-06-05 06:02:06,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:02:06,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-06-05 06:02:06,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=1328, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 06:02:06,950 INFO L87 Difference]: Start difference. First operand 22719 states and 56467 transitions. Second operand has 39 states, 39 states have (on average 3.076923076923077) internal successors, (120), 38 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:02:09,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:02:09,312 INFO L93 Difference]: Finished difference Result 29367 states and 72977 transitions. [2021-06-05 06:02:09,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-05 06:02:09,312 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.076923076923077) internal successors, (120), 38 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-06-05 06:02:09,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:02:09,348 INFO L225 Difference]: With dead ends: 29367 [2021-06-05 06:02:09,348 INFO L226 Difference]: Without dead ends: 28895 [2021-06-05 06:02:09,348 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 53 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1204 ImplicationChecksByTransitivity, 2112.1ms TimeCoverageRelationStatistics Valid=398, Invalid=4024, Unknown=0, NotChecked=0, Total=4422 [2021-06-05 06:02:09,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28895 states. [2021-06-05 06:02:09,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28895 to 24415. [2021-06-05 06:02:09,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24415 states, 24414 states have (on average 2.4823052347014007) internal successors, (60603), 24414 states have internal predecessors, (60603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:02:09,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24415 states to 24415 states and 60603 transitions. [2021-06-05 06:02:09,639 INFO L78 Accepts]: Start accepts. Automaton has 24415 states and 60603 transitions. Word has length 71 [2021-06-05 06:02:09,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:02:09,639 INFO L482 AbstractCegarLoop]: Abstraction has 24415 states and 60603 transitions. [2021-06-05 06:02:09,639 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 3.076923076923077) internal successors, (120), 38 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:02:09,639 INFO L276 IsEmpty]: Start isEmpty. Operand 24415 states and 60603 transitions. [2021-06-05 06:02:09,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-06-05 06:02:09,656 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:02:09,656 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:02:09,856 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 155 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable157 [2021-06-05 06:02:09,857 INFO L430 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:02:09,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:02:09,857 INFO L82 PathProgramCache]: Analyzing trace with hash -399824461, now seen corresponding path program 152 times [2021-06-05 06:02:09,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:02:09,857 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465207025] [2021-06-05 06:02:09,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:02:09,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:02:10,150 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 9 proven. 198 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-06-05 06:02:10,150 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:02:10,150 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465207025] [2021-06-05 06:02:10,150 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465207025] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:02:10,150 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925247091] [2021-06-05 06:02:10,150 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 156 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 156 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:02:10,182 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:02:10,182 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:02:10,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 74 conjunts are in the unsatisfiable core [2021-06-05 06:02:10,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:02:11,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:11,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:11,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:11,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:11,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:11,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:11,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:11,059 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:02:11,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:11,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:11,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:11,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:11,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:11,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:11,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:11,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:11,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:11,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:11,066 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:02:11,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:11,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:11,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:11,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:11,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:11,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:11,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:11,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:11,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:11,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:11,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:11,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:11,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:11,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:11,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:11,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:11,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:11,078 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:02:11,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:11,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:11,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:11,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:11,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:11,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:11,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:11,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:11,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:11,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:11,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:11,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:11,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:11,087 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:02:11,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:11,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:11,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:11,089 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:02:11,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:11,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:11,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:11,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:11,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:11,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:11,094 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:02:11,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:11,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:11,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:11,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:11,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:11,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:11,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:11,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:11,099 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:02:11,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:11,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:11,101 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:02:11,102 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 17 select indices, 17 select index equivalence classes, 36 disjoint index pairs (out of 136 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 162 treesize of output 60 [2021-06-05 06:02:11,103 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:02:11,108 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:02:11,109 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 06:02:11,109 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:168, output treesize:7 [2021-06-05 06:02:11,120 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 7 proven. 207 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:02:11,120 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1925247091] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:02:11,120 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:02:11,120 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 22] total 34 [2021-06-05 06:02:11,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090646568] [2021-06-05 06:02:11,120 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-06-05 06:02:11,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:02:11,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-06-05 06:02:11,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=1061, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 06:02:11,121 INFO L87 Difference]: Start difference. First operand 24415 states and 60603 transitions. Second operand has 35 states, 35 states have (on average 3.3714285714285714) internal successors, (118), 34 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:02:13,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:02:13,321 INFO L93 Difference]: Finished difference Result 32875 states and 81701 transitions. [2021-06-05 06:02:13,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-05 06:02:13,321 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.3714285714285714) internal successors, (118), 34 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-06-05 06:02:13,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:02:13,356 INFO L225 Difference]: With dead ends: 32875 [2021-06-05 06:02:13,356 INFO L226 Difference]: Without dead ends: 32319 [2021-06-05 06:02:13,357 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 57 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1224 ImplicationChecksByTransitivity, 2252.7ms TimeCoverageRelationStatistics Valid=412, Invalid=4010, Unknown=0, NotChecked=0, Total=4422 [2021-06-05 06:02:13,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32319 states. [2021-06-05 06:02:13,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32319 to 23535. [2021-06-05 06:02:13,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23535 states, 23534 states have (on average 2.483683181779553) internal successors, (58451), 23534 states have internal predecessors, (58451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:02:13,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23535 states to 23535 states and 58451 transitions. [2021-06-05 06:02:13,653 INFO L78 Accepts]: Start accepts. Automaton has 23535 states and 58451 transitions. Word has length 71 [2021-06-05 06:02:13,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:02:13,653 INFO L482 AbstractCegarLoop]: Abstraction has 23535 states and 58451 transitions. [2021-06-05 06:02:13,654 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 3.3714285714285714) internal successors, (118), 34 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:02:13,654 INFO L276 IsEmpty]: Start isEmpty. Operand 23535 states and 58451 transitions. [2021-06-05 06:02:13,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-06-05 06:02:13,670 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:02:13,670 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:02:13,870 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 156 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable158 [2021-06-05 06:02:13,871 INFO L430 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:02:13,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:02:13,871 INFO L82 PathProgramCache]: Analyzing trace with hash 477438387, now seen corresponding path program 153 times [2021-06-05 06:02:13,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:02:13,871 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584211655] [2021-06-05 06:02:13,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:02:13,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:02:14,230 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 9 proven. 205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:02:14,230 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:02:14,230 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584211655] [2021-06-05 06:02:14,230 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584211655] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:02:14,230 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094509062] [2021-06-05 06:02:14,230 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 157 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 157 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:02:14,265 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-06-05 06:02:14,266 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:02:14,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 74 conjunts are in the unsatisfiable core [2021-06-05 06:02:14,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:02:15,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:15,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:15,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:15,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:15,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:15,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:15,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:15,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:15,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:15,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:15,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:15,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:15,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:15,169 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:02:15,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:15,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:15,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:15,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:15,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:15,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:15,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:15,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:15,175 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:02:15,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:15,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:15,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:15,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:15,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:15,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:15,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:15,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:15,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:15,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:15,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:15,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:15,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:15,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:15,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:15,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:15,186 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:02:15,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:15,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:15,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:15,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:15,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:15,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:15,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:15,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:15,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:15,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:15,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:15,193 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:02:15,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:15,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:15,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:15,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:15,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:15,197 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:02:15,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:15,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:15,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:15,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:15,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:15,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:15,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:15,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:15,203 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:02:15,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:15,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:15,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:15,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:15,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:15,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:15,207 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:02:15,208 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:02:15,208 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 17 select indices, 17 select index equivalence classes, 36 disjoint index pairs (out of 136 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 162 treesize of output 60 [2021-06-05 06:02:15,209 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:02:15,215 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:02:15,216 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 06:02:15,216 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:168, output treesize:7 [2021-06-05 06:02:15,226 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 4 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:02:15,226 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2094509062] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:02:15,227 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:02:15,227 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 22] total 35 [2021-06-05 06:02:15,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207741380] [2021-06-05 06:02:15,227 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-06-05 06:02:15,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:02:15,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-06-05 06:02:15,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=1130, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 06:02:15,227 INFO L87 Difference]: Start difference. First operand 23535 states and 58451 transitions. Second operand has 36 states, 36 states have (on average 3.4444444444444446) internal successors, (124), 35 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:02:17,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:02:17,395 INFO L93 Difference]: Finished difference Result 28871 states and 71683 transitions. [2021-06-05 06:02:17,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-05 06:02:17,395 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.4444444444444446) internal successors, (124), 35 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-06-05 06:02:17,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:02:17,420 INFO L225 Difference]: With dead ends: 28871 [2021-06-05 06:02:17,420 INFO L226 Difference]: Without dead ends: 28383 [2021-06-05 06:02:17,420 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 56 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1132 ImplicationChecksByTransitivity, 2076.2ms TimeCoverageRelationStatistics Valid=366, Invalid=3794, Unknown=0, NotChecked=0, Total=4160 [2021-06-05 06:02:17,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28383 states. [2021-06-05 06:02:17,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28383 to 23087. [2021-06-05 06:02:17,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23087 states, 23086 states have (on average 2.4831066447197436) internal successors, (57325), 23086 states have internal predecessors, (57325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:02:17,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23087 states to 23087 states and 57325 transitions. [2021-06-05 06:02:17,705 INFO L78 Accepts]: Start accepts. Automaton has 23087 states and 57325 transitions. Word has length 71 [2021-06-05 06:02:17,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:02:17,705 INFO L482 AbstractCegarLoop]: Abstraction has 23087 states and 57325 transitions. [2021-06-05 06:02:17,705 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 3.4444444444444446) internal successors, (124), 35 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:02:17,705 INFO L276 IsEmpty]: Start isEmpty. Operand 23087 states and 57325 transitions. [2021-06-05 06:02:17,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-06-05 06:02:17,723 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:02:17,723 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:02:17,923 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 157 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable159 [2021-06-05 06:02:17,923 INFO L430 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:02:17,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:02:17,923 INFO L82 PathProgramCache]: Analyzing trace with hash 2035475891, now seen corresponding path program 154 times [2021-06-05 06:02:17,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:02:17,924 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623091627] [2021-06-05 06:02:17,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:02:17,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:02:18,274 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 9 proven. 205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:02:18,274 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:02:18,274 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623091627] [2021-06-05 06:02:18,274 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623091627] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:02:18,274 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442292947] [2021-06-05 06:02:18,274 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 158 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 158 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:02:18,305 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:02:18,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:02:18,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 74 conjunts are in the unsatisfiable core [2021-06-05 06:02:18,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:02:19,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:19,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:19,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:19,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:19,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:19,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:19,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:19,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:19,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:19,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:19,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:19,208 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:02:19,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:19,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:19,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:19,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:19,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:19,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:19,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:19,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:19,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:19,214 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:02:19,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:19,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:19,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:19,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:19,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:19,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:19,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:19,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:19,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:19,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:19,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:19,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:19,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:19,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:19,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:19,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:19,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:19,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:19,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:19,227 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:02:19,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:19,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:19,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:19,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:19,230 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:02:19,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:19,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:19,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:19,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:19,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:19,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:19,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:19,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:19,236 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:02:19,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:19,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:19,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:19,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:19,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:19,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:19,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:19,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:19,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:19,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:19,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:19,244 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:02:19,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:19,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:19,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:19,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:19,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:19,247 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:02:19,248 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:02:19,248 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 17 select indices, 17 select index equivalence classes, 36 disjoint index pairs (out of 136 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 162 treesize of output 60 [2021-06-05 06:02:19,250 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:02:19,255 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:02:19,256 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 06:02:19,256 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:168, output treesize:7 [2021-06-05 06:02:19,266 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 13 proven. 201 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:02:19,266 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [442292947] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:02:19,266 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:02:19,266 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 22] total 35 [2021-06-05 06:02:19,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027501222] [2021-06-05 06:02:19,266 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-06-05 06:02:19,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:02:19,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-06-05 06:02:19,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=1130, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 06:02:19,266 INFO L87 Difference]: Start difference. First operand 23087 states and 57325 transitions. Second operand has 36 states, 36 states have (on average 3.3333333333333335) internal successors, (120), 35 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:02:21,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:02:21,077 INFO L93 Difference]: Finished difference Result 31975 states and 79499 transitions. [2021-06-05 06:02:21,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-05 06:02:21,077 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.3333333333333335) internal successors, (120), 35 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-06-05 06:02:21,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:02:21,110 INFO L225 Difference]: With dead ends: 31975 [2021-06-05 06:02:21,110 INFO L226 Difference]: Without dead ends: 31535 [2021-06-05 06:02:21,110 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 56 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 998 ImplicationChecksByTransitivity, 1845.6ms TimeCoverageRelationStatistics Valid=330, Invalid=3452, Unknown=0, NotChecked=0, Total=3782 [2021-06-05 06:02:21,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31535 states. [2021-06-05 06:02:21,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31535 to 25455. [2021-06-05 06:02:21,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25455 states, 25454 states have (on average 2.4821639035122183) internal successors, (63181), 25454 states have internal predecessors, (63181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:02:21,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25455 states to 25455 states and 63181 transitions. [2021-06-05 06:02:21,430 INFO L78 Accepts]: Start accepts. Automaton has 25455 states and 63181 transitions. Word has length 71 [2021-06-05 06:02:21,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:02:21,430 INFO L482 AbstractCegarLoop]: Abstraction has 25455 states and 63181 transitions. [2021-06-05 06:02:21,430 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 3.3333333333333335) internal successors, (120), 35 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:02:21,430 INFO L276 IsEmpty]: Start isEmpty. Operand 25455 states and 63181 transitions. [2021-06-05 06:02:21,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-06-05 06:02:21,447 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:02:21,447 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:02:21,647 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160,158 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:02:21,648 INFO L430 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:02:21,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:02:21,648 INFO L82 PathProgramCache]: Analyzing trace with hash -1126450765, now seen corresponding path program 155 times [2021-06-05 06:02:21,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:02:21,648 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769929400] [2021-06-05 06:02:21,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:02:21,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:02:22,005 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 9 proven. 205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:02:22,005 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:02:22,005 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769929400] [2021-06-05 06:02:22,005 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769929400] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:02:22,005 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180703066] [2021-06-05 06:02:22,005 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 159 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 159 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:02:22,041 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-06-05 06:02:22,041 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:02:22,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 75 conjunts are in the unsatisfiable core [2021-06-05 06:02:22,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:02:22,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:22,972 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:02:22,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:22,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:22,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:22,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:22,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:22,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:22,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:22,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:22,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:22,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:22,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:22,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:22,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:22,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:22,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:22,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:22,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:22,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:22,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:22,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:22,986 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:02:22,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:22,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:22,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:22,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:22,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:22,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:22,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:22,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:22,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:22,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:22,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:22,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:22,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:22,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:22,996 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:02:22,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:22,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:22,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:22,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:23,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:23,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:23,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:23,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:23,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:23,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:23,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:23,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:23,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:23,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:23,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:23,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:23,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:23,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:23,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:23,009 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:02:23,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:23,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:23,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:23,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:23,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:23,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:23,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:23,014 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:02:23,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:23,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:23,016 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:02:23,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:23,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:23,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:23,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:23,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:23,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:23,020 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:02:23,020 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:02:23,021 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 17 select indices, 17 select index equivalence classes, 36 disjoint index pairs (out of 136 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 162 treesize of output 60 [2021-06-05 06:02:23,022 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:02:23,028 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:02:23,029 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 06:02:23,029 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:168, output treesize:7 [2021-06-05 06:02:23,039 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 0 proven. 214 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:02:23,040 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [180703066] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:02:23,040 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:02:23,040 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 22] total 36 [2021-06-05 06:02:23,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083167018] [2021-06-05 06:02:23,040 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-06-05 06:02:23,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:02:23,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-06-05 06:02:23,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1194, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 06:02:23,040 INFO L87 Difference]: Start difference. First operand 25455 states and 63181 transitions. Second operand has 37 states, 37 states have (on average 3.3513513513513513) internal successors, (124), 36 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:02:24,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:02:24,655 INFO L93 Difference]: Finished difference Result 40631 states and 101189 transitions. [2021-06-05 06:02:24,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-05 06:02:24,656 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.3513513513513513) internal successors, (124), 36 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-06-05 06:02:24,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:02:24,701 INFO L225 Difference]: With dead ends: 40631 [2021-06-05 06:02:24,702 INFO L226 Difference]: Without dead ends: 40543 [2021-06-05 06:02:24,702 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 55 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 996 ImplicationChecksByTransitivity, 1799.7ms TimeCoverageRelationStatistics Valid=341, Invalid=3565, Unknown=0, NotChecked=0, Total=3906 [2021-06-05 06:02:24,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40543 states. [2021-06-05 06:02:25,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40543 to 24623. [2021-06-05 06:02:25,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24623 states, 24622 states have (on average 2.4815612054260416) internal successors, (61101), 24622 states have internal predecessors, (61101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:02:25,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24623 states to 24623 states and 61101 transitions. [2021-06-05 06:02:25,220 INFO L78 Accepts]: Start accepts. Automaton has 24623 states and 61101 transitions. Word has length 71 [2021-06-05 06:02:25,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:02:25,221 INFO L482 AbstractCegarLoop]: Abstraction has 24623 states and 61101 transitions. [2021-06-05 06:02:25,221 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 3.3513513513513513) internal successors, (124), 36 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:02:25,221 INFO L276 IsEmpty]: Start isEmpty. Operand 24623 states and 61101 transitions. [2021-06-05 06:02:25,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-06-05 06:02:25,237 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:02:25,237 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:02:25,437 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 159 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable161 [2021-06-05 06:02:25,437 INFO L430 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:02:25,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:02:25,438 INFO L82 PathProgramCache]: Analyzing trace with hash -1890623053, now seen corresponding path program 156 times [2021-06-05 06:02:25,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:02:25,438 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083794739] [2021-06-05 06:02:25,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:02:25,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:02:25,851 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 9 proven. 205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:02:25,852 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:02:25,852 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083794739] [2021-06-05 06:02:25,852 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083794739] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:02:25,852 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203730645] [2021-06-05 06:02:25,852 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 160 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 160 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:02:25,919 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2021-06-05 06:02:25,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:02:25,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 76 conjunts are in the unsatisfiable core [2021-06-05 06:02:25,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:02:26,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:26,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:26,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:26,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:26,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:26,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:26,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:26,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:26,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:26,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:26,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:26,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:26,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:26,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:26,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:26,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:26,881 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:02:26,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:26,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:26,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:26,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:26,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:26,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:26,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:26,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:26,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:26,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:26,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:26,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:26,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:26,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:26,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:26,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:26,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:26,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:26,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:26,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:26,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:26,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:26,896 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:02:26,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:26,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:26,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:26,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:26,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:26,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:26,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:26,901 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:02:26,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:26,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:26,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:26,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:26,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:26,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:26,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:26,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:26,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:26,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:26,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:26,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:26,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:26,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:26,911 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:02:26,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:26,912 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:02:26,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:26,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:26,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:26,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:26,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:26,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:26,916 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:02:26,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:26,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:26,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:26,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:26,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:26,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:26,921 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:02:26,921 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:02:26,922 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 17 select indices, 17 select index equivalence classes, 36 disjoint index pairs (out of 136 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 164 treesize of output 60 [2021-06-05 06:02:26,923 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:02:26,928 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:02:26,929 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 06:02:26,929 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:174, output treesize:7 [2021-06-05 06:02:26,940 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 0 proven. 214 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:02:26,940 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [203730645] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:02:26,940 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:02:26,940 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 38 [2021-06-05 06:02:26,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146342066] [2021-06-05 06:02:26,940 INFO L462 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-06-05 06:02:26,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:02:26,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-06-05 06:02:26,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=1320, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 06:02:26,941 INFO L87 Difference]: Start difference. First operand 24623 states and 61101 transitions. Second operand has 39 states, 39 states have (on average 3.1794871794871793) internal successors, (124), 38 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:02:28,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:02:28,378 INFO L93 Difference]: Finished difference Result 35815 states and 89413 transitions. [2021-06-05 06:02:28,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-05 06:02:28,379 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.1794871794871793) internal successors, (124), 38 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-06-05 06:02:28,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:02:28,424 INFO L225 Difference]: With dead ends: 35815 [2021-06-05 06:02:28,424 INFO L226 Difference]: Without dead ends: 35631 [2021-06-05 06:02:28,424 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 53 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1009 ImplicationChecksByTransitivity, 1818.4ms TimeCoverageRelationStatistics Valid=374, Invalid=3658, Unknown=0, NotChecked=0, Total=4032 [2021-06-05 06:02:28,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35631 states. [2021-06-05 06:02:28,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35631 to 24735. [2021-06-05 06:02:28,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24735 states, 24734 states have (on average 2.4816446996037844) internal successors, (61381), 24734 states have internal predecessors, (61381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:02:28,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24735 states to 24735 states and 61381 transitions. [2021-06-05 06:02:28,761 INFO L78 Accepts]: Start accepts. Automaton has 24735 states and 61381 transitions. Word has length 71 [2021-06-05 06:02:28,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:02:28,761 INFO L482 AbstractCegarLoop]: Abstraction has 24735 states and 61381 transitions. [2021-06-05 06:02:28,761 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 3.1794871794871793) internal successors, (124), 38 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:02:28,761 INFO L276 IsEmpty]: Start isEmpty. Operand 24735 states and 61381 transitions. [2021-06-05 06:02:28,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-06-05 06:02:28,779 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:02:28,779 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:02:28,979 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162,160 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:02:28,979 INFO L430 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:02:28,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:02:28,979 INFO L82 PathProgramCache]: Analyzing trace with hash 184616883, now seen corresponding path program 157 times [2021-06-05 06:02:28,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:02:28,980 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024949271] [2021-06-05 06:02:28,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:02:28,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:02:29,336 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 9 proven. 205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:02:29,336 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:02:29,337 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024949271] [2021-06-05 06:02:29,337 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024949271] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:02:29,337 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732659664] [2021-06-05 06:02:29,337 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 161 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 161 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:02:29,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:02:29,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 74 conjunts are in the unsatisfiable core [2021-06-05 06:02:29,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:02:30,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:30,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:30,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:30,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:30,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:30,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:30,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:30,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:30,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:30,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:30,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:30,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:30,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:30,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:30,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:30,280 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:02:30,280 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:02:30,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:30,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:30,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:30,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:30,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:30,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:30,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:30,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:30,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:30,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:30,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:30,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:30,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:30,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:30,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:30,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:30,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:30,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:30,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:30,293 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:02:30,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:30,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:30,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:30,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:30,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:30,297 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:02:30,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:30,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:30,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:30,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:30,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:30,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:30,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:30,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:30,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:30,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:30,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:30,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:30,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:30,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:30,306 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:02:30,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:30,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:30,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:30,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:30,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:30,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:30,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:30,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:30,312 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:02:30,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:30,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:30,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:30,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:30,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:30,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:30,316 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:02:30,317 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:02:30,317 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 17 select indices, 17 select index equivalence classes, 36 disjoint index pairs (out of 136 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 162 treesize of output 60 [2021-06-05 06:02:30,318 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:02:30,324 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:02:30,325 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 06:02:30,325 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:168, output treesize:7 [2021-06-05 06:02:30,334 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 13 proven. 201 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:02:30,335 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1732659664] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:02:30,335 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:02:30,335 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 22] total 35 [2021-06-05 06:02:30,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431181959] [2021-06-05 06:02:30,335 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-06-05 06:02:30,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:02:30,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-06-05 06:02:30,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=1132, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 06:02:30,335 INFO L87 Difference]: Start difference. First operand 24735 states and 61381 transitions. Second operand has 36 states, 36 states have (on average 3.3333333333333335) internal successors, (120), 35 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:02:32,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:02:32,096 INFO L93 Difference]: Finished difference Result 31671 states and 78691 transitions. [2021-06-05 06:02:32,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 06:02:32,097 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.3333333333333335) internal successors, (120), 35 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-06-05 06:02:32,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:02:32,130 INFO L225 Difference]: With dead ends: 31671 [2021-06-05 06:02:32,130 INFO L226 Difference]: Without dead ends: 31263 [2021-06-05 06:02:32,131 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 56 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 923 ImplicationChecksByTransitivity, 1825.2ms TimeCoverageRelationStatistics Valid=311, Invalid=3229, Unknown=0, NotChecked=0, Total=3540 [2021-06-05 06:02:32,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31263 states. [2021-06-05 06:02:32,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31263 to 25903. [2021-06-05 06:02:32,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25903 states, 25902 states have (on average 2.4809281136591768) internal successors, (64261), 25902 states have internal predecessors, (64261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:02:32,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25903 states to 25903 states and 64261 transitions. [2021-06-05 06:02:32,444 INFO L78 Accepts]: Start accepts. Automaton has 25903 states and 64261 transitions. Word has length 71 [2021-06-05 06:02:32,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:02:32,444 INFO L482 AbstractCegarLoop]: Abstraction has 25903 states and 64261 transitions. [2021-06-05 06:02:32,444 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 3.3333333333333335) internal successors, (120), 35 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:02:32,445 INFO L276 IsEmpty]: Start isEmpty. Operand 25903 states and 64261 transitions. [2021-06-05 06:02:32,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-06-05 06:02:32,463 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:02:32,463 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:02:32,663 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163,161 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:02:32,663 INFO L430 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:02:32,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:02:32,663 INFO L82 PathProgramCache]: Analyzing trace with hash 1317657523, now seen corresponding path program 158 times [2021-06-05 06:02:32,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:02:32,664 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141648650] [2021-06-05 06:02:32,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:02:32,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:02:33,057 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 9 proven. 205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:02:33,057 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:02:33,057 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141648650] [2021-06-05 06:02:33,057 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141648650] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:02:33,057 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882170389] [2021-06-05 06:02:33,057 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 162 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 162 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:02:33,088 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:02:33,089 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:02:33,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 74 conjunts are in the unsatisfiable core [2021-06-05 06:02:33,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:02:33,523 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2021-06-05 06:02:34,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:34,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:34,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:34,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:34,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:34,149 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:02:34,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:34,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:34,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:34,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:34,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:34,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:34,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:34,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:34,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:34,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:34,156 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:02:34,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:34,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:34,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:34,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:34,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:34,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:34,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:34,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:34,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:34,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:34,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:34,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:34,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:34,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:34,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:34,166 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:02:34,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:34,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:34,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:34,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:34,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:34,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:34,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:34,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:34,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:34,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:34,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:34,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:34,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:34,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:34,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:34,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:34,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:34,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:34,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:34,180 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:02:34,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:34,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:34,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:34,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:34,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:34,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:34,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:34,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:34,185 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:02:34,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:34,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:34,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:34,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:34,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:34,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:34,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:34,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:34,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:34,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:34,192 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:02:34,193 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:02:34,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:34,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:34,195 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:02:34,195 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 17 select indices, 17 select index equivalence classes, 36 disjoint index pairs (out of 136 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 162 treesize of output 60 [2021-06-05 06:02:34,197 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:02:34,205 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:02:34,206 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 06:02:34,206 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:168, output treesize:7 [2021-06-05 06:02:34,217 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 0 proven. 214 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:02:34,218 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882170389] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:02:34,218 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:02:34,218 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 22] total 36 [2021-06-05 06:02:34,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41490576] [2021-06-05 06:02:34,218 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-06-05 06:02:34,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:02:34,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-06-05 06:02:34,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1194, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 06:02:34,218 INFO L87 Difference]: Start difference. First operand 25903 states and 64261 transitions. Second operand has 37 states, 37 states have (on average 3.3513513513513513) internal successors, (124), 36 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:02:36,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:02:36,037 INFO L93 Difference]: Finished difference Result 40887 states and 101845 transitions. [2021-06-05 06:02:36,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 06:02:36,038 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.3513513513513513) internal successors, (124), 36 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-06-05 06:02:36,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:02:36,082 INFO L225 Difference]: With dead ends: 40887 [2021-06-05 06:02:36,082 INFO L226 Difference]: Without dead ends: 40799 [2021-06-05 06:02:36,083 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 55 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 922 ImplicationChecksByTransitivity, 1911.7ms TimeCoverageRelationStatistics Valid=323, Invalid=3337, Unknown=0, NotChecked=0, Total=3660 [2021-06-05 06:02:36,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40799 states. [2021-06-05 06:02:36,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40799 to 25631. [2021-06-05 06:02:36,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25631 states, 25630 states have (on average 2.4807257120561843) internal successors, (63581), 25630 states have internal predecessors, (63581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:02:36,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25631 states to 25631 states and 63581 transitions. [2021-06-05 06:02:36,456 INFO L78 Accepts]: Start accepts. Automaton has 25631 states and 63581 transitions. Word has length 71 [2021-06-05 06:02:36,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:02:36,456 INFO L482 AbstractCegarLoop]: Abstraction has 25631 states and 63581 transitions. [2021-06-05 06:02:36,456 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 3.3513513513513513) internal successors, (124), 36 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:02:36,456 INFO L276 IsEmpty]: Start isEmpty. Operand 25631 states and 63581 transitions. [2021-06-05 06:02:36,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-06-05 06:02:36,474 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:02:36,474 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:02:36,676 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164,162 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:02:36,677 INFO L430 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:02:36,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:02:36,677 INFO L82 PathProgramCache]: Analyzing trace with hash 965259187, now seen corresponding path program 159 times [2021-06-05 06:02:36,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:02:36,677 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688046540] [2021-06-05 06:02:36,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:02:36,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:02:37,068 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 9 proven. 205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:02:37,068 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:02:37,068 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688046540] [2021-06-05 06:02:37,068 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688046540] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:02:37,068 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355714018] [2021-06-05 06:02:37,069 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 163 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 163 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:02:37,103 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-06-05 06:02:37,103 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:02:37,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 74 conjunts are in the unsatisfiable core [2021-06-05 06:02:37,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:02:38,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:38,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:38,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:38,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:38,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:38,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:38,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:38,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:38,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:38,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:38,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:38,038 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:02:38,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:38,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:38,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:38,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:38,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:38,042 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:02:38,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:38,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:38,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:38,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:38,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:38,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:38,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:38,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:38,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:38,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:38,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:38,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:38,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:38,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:38,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:38,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:38,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:38,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:38,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:38,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:38,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:38,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:38,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:38,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:38,058 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:02:38,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:38,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:38,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:38,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:38,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:38,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:38,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:38,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:38,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:38,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:38,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:38,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:38,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:38,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:38,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:38,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:38,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:38,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:38,070 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:02:38,071 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:02:38,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:38,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:38,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:38,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:38,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:38,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:38,075 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:02:38,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:38,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:38,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:38,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:38,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:38,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:38,079 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:02:38,080 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:02:38,081 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 17 select indices, 17 select index equivalence classes, 36 disjoint index pairs (out of 136 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 162 treesize of output 60 [2021-06-05 06:02:38,082 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:02:38,090 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:02:38,092 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 06:02:38,092 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:168, output treesize:7 [2021-06-05 06:02:38,106 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 0 proven. 214 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:02:38,107 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355714018] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:02:38,107 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:02:38,107 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 22] total 37 [2021-06-05 06:02:38,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975664454] [2021-06-05 06:02:38,107 INFO L462 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-06-05 06:02:38,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:02:38,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-06-05 06:02:38,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=1252, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 06:02:38,108 INFO L87 Difference]: Start difference. First operand 25631 states and 63581 transitions. Second operand has 38 states, 38 states have (on average 3.263157894736842) internal successors, (124), 37 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:02:40,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:02:40,141 INFO L93 Difference]: Finished difference Result 39015 states and 97173 transitions. [2021-06-05 06:02:40,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-05 06:02:40,142 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.263157894736842) internal successors, (124), 37 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-06-05 06:02:40,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:02:40,190 INFO L225 Difference]: With dead ends: 39015 [2021-06-05 06:02:40,190 INFO L226 Difference]: Without dead ends: 38927 [2021-06-05 06:02:40,191 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 54 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 983 ImplicationChecksByTransitivity, 1825.2ms TimeCoverageRelationStatistics Valid=362, Invalid=3544, Unknown=0, NotChecked=0, Total=3906 [2021-06-05 06:02:40,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38927 states. [2021-06-05 06:02:40,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38927 to 25807. [2021-06-05 06:02:40,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25807 states, 25806 states have (on average 2.4808571650003874) internal successors, (64021), 25806 states have internal predecessors, (64021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:02:40,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25807 states to 25807 states and 64021 transitions. [2021-06-05 06:02:40,589 INFO L78 Accepts]: Start accepts. Automaton has 25807 states and 64021 transitions. Word has length 71 [2021-06-05 06:02:40,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:02:40,589 INFO L482 AbstractCegarLoop]: Abstraction has 25807 states and 64021 transitions. [2021-06-05 06:02:40,590 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 3.263157894736842) internal successors, (124), 37 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:02:40,590 INFO L276 IsEmpty]: Start isEmpty. Operand 25807 states and 64021 transitions. [2021-06-05 06:02:40,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-06-05 06:02:40,609 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:02:40,609 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:02:40,809 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165,163 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:02:40,810 INFO L430 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:02:40,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:02:40,810 INFO L82 PathProgramCache]: Analyzing trace with hash 553485235, now seen corresponding path program 160 times [2021-06-05 06:02:40,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:02:40,810 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921180265] [2021-06-05 06:02:40,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:02:40,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:02:41,242 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 9 proven. 205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:02:41,242 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:02:41,242 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921180265] [2021-06-05 06:02:41,242 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921180265] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:02:41,242 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691865648] [2021-06-05 06:02:41,242 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 164 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 164 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:02:41,274 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:02:41,275 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:02:41,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 74 conjunts are in the unsatisfiable core [2021-06-05 06:02:41,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:02:42,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:42,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:42,365 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:02:42,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:42,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:42,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:42,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:42,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:42,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:42,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:42,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:42,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:42,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:42,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:42,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:42,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:42,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:42,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:42,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:42,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:42,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:42,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:42,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:42,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:42,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:42,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:42,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:42,382 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:02:42,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:42,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:42,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:42,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:42,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:42,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:42,387 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:02:42,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:42,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:42,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:42,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:42,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:42,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:42,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:42,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:42,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:42,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:42,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:42,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:42,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:42,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:42,396 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:02:42,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:42,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:42,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:42,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:42,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:42,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:42,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:42,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:42,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:42,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:42,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:42,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:42,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:42,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:42,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:42,407 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:02:42,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:42,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:42,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:42,409 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:02:42,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:42,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:42,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:42,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:42,412 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:02:42,412 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:02:42,413 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 17 select indices, 17 select index equivalence classes, 36 disjoint index pairs (out of 136 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 162 treesize of output 60 [2021-06-05 06:02:42,414 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:02:42,420 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:02:42,421 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 06:02:42,421 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:168, output treesize:7 [2021-06-05 06:02:42,431 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 9 proven. 205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:02:42,431 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [691865648] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:02:42,431 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:02:42,431 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 38 [2021-06-05 06:02:42,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951536053] [2021-06-05 06:02:42,431 INFO L462 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-06-05 06:02:42,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:02:42,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-06-05 06:02:42,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1318, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 06:02:42,432 INFO L87 Difference]: Start difference. First operand 25807 states and 64021 transitions. Second operand has 39 states, 39 states have (on average 3.076923076923077) internal successors, (120), 38 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:02:44,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:02:44,465 INFO L93 Difference]: Finished difference Result 37287 states and 92853 transitions. [2021-06-05 06:02:44,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-05 06:02:44,466 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.076923076923077) internal successors, (120), 38 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-06-05 06:02:44,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:02:44,507 INFO L225 Difference]: With dead ends: 37287 [2021-06-05 06:02:44,507 INFO L226 Difference]: Without dead ends: 37199 [2021-06-05 06:02:44,507 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 53 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1006 ImplicationChecksByTransitivity, 1982.3ms TimeCoverageRelationStatistics Valid=378, Invalid=3654, Unknown=0, NotChecked=0, Total=4032 [2021-06-05 06:02:44,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37199 states. [2021-06-05 06:02:44,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37199 to 25807. [2021-06-05 06:02:44,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25807 states, 25806 states have (on average 2.4808571650003874) internal successors, (64021), 25806 states have internal predecessors, (64021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:02:44,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25807 states to 25807 states and 64021 transitions. [2021-06-05 06:02:44,865 INFO L78 Accepts]: Start accepts. Automaton has 25807 states and 64021 transitions. Word has length 71 [2021-06-05 06:02:44,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:02:44,865 INFO L482 AbstractCegarLoop]: Abstraction has 25807 states and 64021 transitions. [2021-06-05 06:02:44,865 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 3.076923076923077) internal successors, (120), 38 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:02:44,865 INFO L276 IsEmpty]: Start isEmpty. Operand 25807 states and 64021 transitions. [2021-06-05 06:02:44,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-06-05 06:02:44,884 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:02:44,884 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:02:45,085 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 164 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable166 [2021-06-05 06:02:45,085 INFO L430 AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:02:45,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:02:45,085 INFO L82 PathProgramCache]: Analyzing trace with hash -822858317, now seen corresponding path program 161 times [2021-06-05 06:02:45,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:02:45,085 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548895163] [2021-06-05 06:02:45,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:02:45,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:02:45,550 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 9 proven. 205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:02:45,550 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:02:45,550 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548895163] [2021-06-05 06:02:45,550 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548895163] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:02:45,550 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2084436670] [2021-06-05 06:02:45,550 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 165 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 165 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:02:45,587 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-06-05 06:02:45,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:02:45,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 75 conjunts are in the unsatisfiable core [2021-06-05 06:02:45,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:02:46,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:46,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:46,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:46,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:46,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:46,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:46,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:46,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:46,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:46,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:46,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:46,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:46,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:46,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:46,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:46,579 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:02:46,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:46,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:46,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:46,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:46,583 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:02:46,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:46,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:46,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:46,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:46,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:46,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:46,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:46,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:46,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:46,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:46,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:46,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:46,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:46,592 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:02:46,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:46,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:46,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:46,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:46,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:46,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:46,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:46,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:46,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:46,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:46,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:46,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:46,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:46,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:46,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:46,602 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:02:46,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:46,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:46,604 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:02:46,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:46,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:46,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:46,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:46,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:46,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:46,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:46,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:46,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:46,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:46,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:46,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:46,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:46,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:46,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:46,614 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:02:46,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:46,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:46,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:46,616 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:02:46,617 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:02:46,617 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 17 select indices, 17 select index equivalence classes, 36 disjoint index pairs (out of 136 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 162 treesize of output 60 [2021-06-05 06:02:46,619 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:02:46,624 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:02:46,625 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 06:02:46,625 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:168, output treesize:7 [2021-06-05 06:02:46,636 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 0 proven. 214 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:02:46,636 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2084436670] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:02:46,636 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:02:46,637 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 38 [2021-06-05 06:02:46,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250956865] [2021-06-05 06:02:46,637 INFO L462 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-06-05 06:02:46,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:02:46,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-06-05 06:02:46,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=1316, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 06:02:46,637 INFO L87 Difference]: Start difference. First operand 25807 states and 64021 transitions. Second operand has 39 states, 39 states have (on average 3.1794871794871793) internal successors, (124), 38 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:02:48,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:02:48,158 INFO L93 Difference]: Finished difference Result 34503 states and 85789 transitions. [2021-06-05 06:02:48,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 06:02:48,159 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.1794871794871793) internal successors, (124), 38 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-06-05 06:02:48,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:02:48,195 INFO L225 Difference]: With dead ends: 34503 [2021-06-05 06:02:48,195 INFO L226 Difference]: Without dead ends: 34463 [2021-06-05 06:02:48,195 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 53 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 972 ImplicationChecksByTransitivity, 1841.0ms TimeCoverageRelationStatistics Valid=368, Invalid=3538, Unknown=0, NotChecked=0, Total=3906 [2021-06-05 06:02:48,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34463 states. [2021-06-05 06:02:48,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34463 to 25823. [2021-06-05 06:02:48,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25823 states, 25822 states have (on average 2.480869026411587) internal successors, (64061), 25822 states have internal predecessors, (64061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:02:48,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25823 states to 25823 states and 64061 transitions. [2021-06-05 06:02:48,529 INFO L78 Accepts]: Start accepts. Automaton has 25823 states and 64061 transitions. Word has length 71 [2021-06-05 06:02:48,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:02:48,529 INFO L482 AbstractCegarLoop]: Abstraction has 25823 states and 64061 transitions. [2021-06-05 06:02:48,530 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 3.1794871794871793) internal successors, (124), 38 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:02:48,530 INFO L276 IsEmpty]: Start isEmpty. Operand 25823 states and 64061 transitions. [2021-06-05 06:02:48,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-06-05 06:02:48,547 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:02:48,547 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:02:48,747 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 165 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable167 [2021-06-05 06:02:48,748 INFO L430 AbstractCegarLoop]: === Iteration 169 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:02:48,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:02:48,748 INFO L82 PathProgramCache]: Analyzing trace with hash -200995405, now seen corresponding path program 162 times [2021-06-05 06:02:48,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:02:48,748 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793745785] [2021-06-05 06:02:48,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:02:48,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:02:49,165 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 9 proven. 205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:02:49,165 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:02:49,165 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793745785] [2021-06-05 06:02:49,165 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793745785] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:02:49,165 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115977075] [2021-06-05 06:02:49,165 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 166 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 166 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:02:49,201 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2021-06-05 06:02:49,201 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:02:49,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 75 conjunts are in the unsatisfiable core [2021-06-05 06:02:49,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:02:52,142 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:02:52,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:52,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:52,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:52,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:52,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:52,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:52,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:52,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:52,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:52,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:52,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:52,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:52,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:52,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:52,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:52,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:52,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:52,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:52,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:52,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:52,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:52,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:52,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:52,158 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:02:52,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:52,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:52,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:52,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:52,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:52,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:52,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:52,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:52,163 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:02:52,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:52,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:52,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:52,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:52,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:52,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:52,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:52,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:52,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:52,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:52,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:52,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:52,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:52,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:52,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:52,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:52,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:52,175 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:02:52,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:52,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:52,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:52,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:52,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:52,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:52,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:52,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:52,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:52,181 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:02:52,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:52,183 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:02:52,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:52,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:52,184 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:02:52,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:02:52,186 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 16 select indices, 16 select index equivalence classes, 36 disjoint index pairs (out of 120 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 158 treesize of output 60 [2021-06-05 06:02:52,187 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:02:52,201 INFO L628 ElimStorePlain]: treesize reduction 5, result has 81.5 percent of original size [2021-06-05 06:02:52,202 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 06:02:52,202 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:178, output treesize:7 [2021-06-05 06:02:52,213 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 0 proven. 214 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:02:52,213 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1115977075] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:02:52,213 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:02:52,213 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 37 [2021-06-05 06:02:52,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508603023] [2021-06-05 06:02:52,213 INFO L462 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-06-05 06:02:52,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:02:52,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-06-05 06:02:52,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1257, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 06:02:52,214 INFO L87 Difference]: Start difference. First operand 25823 states and 64061 transitions. Second operand has 38 states, 38 states have (on average 3.1578947368421053) internal successors, (120), 37 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:03:00,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:03:00,611 INFO L93 Difference]: Finished difference Result 47963 states and 119451 transitions. [2021-06-05 06:03:00,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-05 06:03:00,611 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.1578947368421053) internal successors, (120), 37 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-06-05 06:03:00,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:03:00,663 INFO L225 Difference]: With dead ends: 47963 [2021-06-05 06:03:00,664 INFO L226 Difference]: Without dead ends: 47327 [2021-06-05 06:03:00,664 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 53 SyntacticMatches, 3 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1380 ImplicationChecksByTransitivity, 5127.2ms TimeCoverageRelationStatistics Valid=454, Invalid=4948, Unknown=0, NotChecked=0, Total=5402 [2021-06-05 06:03:00,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47327 states. [2021-06-05 06:03:01,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47327 to 25711. [2021-06-05 06:03:01,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25711 states, 25710 states have (on average 2.4817191754181254) internal successors, (63805), 25710 states have internal predecessors, (63805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:03:01,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25711 states to 25711 states and 63805 transitions. [2021-06-05 06:03:01,089 INFO L78 Accepts]: Start accepts. Automaton has 25711 states and 63805 transitions. Word has length 71 [2021-06-05 06:03:01,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:03:01,089 INFO L482 AbstractCegarLoop]: Abstraction has 25711 states and 63805 transitions. [2021-06-05 06:03:01,089 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 3.1578947368421053) internal successors, (120), 37 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:03:01,089 INFO L276 IsEmpty]: Start isEmpty. Operand 25711 states and 63805 transitions. [2021-06-05 06:03:01,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-06-05 06:03:01,107 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:03:01,107 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:03:01,316 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168,166 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:03:01,317 INFO L430 AbstractCegarLoop]: === Iteration 170 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:03:01,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:03:01,317 INFO L82 PathProgramCache]: Analyzing trace with hash 597571507, now seen corresponding path program 163 times [2021-06-05 06:03:01,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:03:01,317 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220312594] [2021-06-05 06:03:01,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:03:01,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:03:01,742 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 9 proven. 205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:03:01,743 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:03:01,743 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220312594] [2021-06-05 06:03:01,743 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220312594] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:03:01,743 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349814761] [2021-06-05 06:03:01,743 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 167 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 167 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:03:01,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:03:01,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 74 conjunts are in the unsatisfiable core [2021-06-05 06:03:01,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:03:02,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:02,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:02,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:02,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:02,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:02,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:02,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:02,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:02,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:02,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:02,706 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:03:02,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:02,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:02,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:02,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:02,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:02,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:02,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:02,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:02,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:02,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:02,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:02,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:02,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:02,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:02,716 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:03:02,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:02,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:02,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:02,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:02,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:02,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:02,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:02,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:02,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:02,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:02,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:02,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:02,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:02,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:02,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:02,727 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:03:02,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:02,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:02,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:02,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:02,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:02,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:02,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:02,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:02,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:02,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:02,734 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:03:02,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:02,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:02,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:02,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:02,737 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:03:02,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:02,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:02,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:02,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:02,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:02,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:02,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:02,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:02,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:02,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:02,745 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:03:02,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:02,746 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:03:02,747 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 16 select indices, 16 select index equivalence classes, 36 disjoint index pairs (out of 120 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 162 treesize of output 60 [2021-06-05 06:03:02,748 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:03:02,753 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:03:02,754 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 06:03:02,754 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:168, output treesize:7 [2021-06-05 06:03:02,764 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 9 proven. 205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:03:02,765 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349814761] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:03:02,765 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:03:02,765 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 37 [2021-06-05 06:03:02,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679411445] [2021-06-05 06:03:02,765 INFO L462 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-06-05 06:03:02,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:03:02,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-06-05 06:03:02,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=1255, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 06:03:02,766 INFO L87 Difference]: Start difference. First operand 25711 states and 63805 transitions. Second operand has 38 states, 38 states have (on average 3.0526315789473686) internal successors, (116), 37 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:03:05,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:03:05,778 INFO L93 Difference]: Finished difference Result 48775 states and 121581 transitions. [2021-06-05 06:03:05,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 06:03:05,778 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.0526315789473686) internal successors, (116), 37 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-06-05 06:03:05,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:03:05,831 INFO L225 Difference]: With dead ends: 48775 [2021-06-05 06:03:05,831 INFO L226 Difference]: Without dead ends: 48687 [2021-06-05 06:03:05,831 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 53 SyntacticMatches, 3 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1347 ImplicationChecksByTransitivity, 2124.4ms TimeCoverageRelationStatistics Valid=448, Invalid=4808, Unknown=0, NotChecked=0, Total=5256 [2021-06-05 06:03:05,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48687 states. [2021-06-05 06:03:06,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48687 to 24831. [2021-06-05 06:03:06,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24831 states, 24830 states have (on average 2.482682239226742) internal successors, (61645), 24830 states have internal predecessors, (61645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:03:06,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24831 states to 24831 states and 61645 transitions. [2021-06-05 06:03:06,251 INFO L78 Accepts]: Start accepts. Automaton has 24831 states and 61645 transitions. Word has length 71 [2021-06-05 06:03:06,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:03:06,251 INFO L482 AbstractCegarLoop]: Abstraction has 24831 states and 61645 transitions. [2021-06-05 06:03:06,251 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 3.0526315789473686) internal successors, (116), 37 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:03:06,251 INFO L276 IsEmpty]: Start isEmpty. Operand 24831 states and 61645 transitions. [2021-06-05 06:03:06,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-06-05 06:03:06,269 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:03:06,269 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:03:06,470 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 167 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable169 [2021-06-05 06:03:06,470 INFO L430 AbstractCegarLoop]: === Iteration 171 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:03:06,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:03:06,470 INFO L82 PathProgramCache]: Analyzing trace with hash 1040865715, now seen corresponding path program 164 times [2021-06-05 06:03:06,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:03:06,470 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672426473] [2021-06-05 06:03:06,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:03:06,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:03:06,908 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 9 proven. 205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:03:06,908 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:03:06,908 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672426473] [2021-06-05 06:03:06,908 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672426473] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:03:06,908 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1365631396] [2021-06-05 06:03:06,908 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 168 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 168 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:03:06,940 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:03:06,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:03:06,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 74 conjunts are in the unsatisfiable core [2021-06-05 06:03:06,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:03:07,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:07,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:07,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:07,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:07,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:07,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:07,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:07,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:07,879 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:03:07,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:07,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:07,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:07,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:07,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:07,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:07,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:07,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:07,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:07,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:07,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:07,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:07,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:07,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:07,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:07,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:07,890 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:03:07,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:07,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:07,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:07,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:07,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:07,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:07,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:07,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:07,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:07,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:07,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:07,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:07,898 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:03:07,899 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:03:07,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:07,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:07,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:07,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:07,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:07,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:07,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:07,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:07,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:07,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:07,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:07,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:07,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:07,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:07,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:07,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:07,910 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:03:07,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:07,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:07,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:07,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:07,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:07,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:07,914 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:03:07,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:07,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:07,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:07,917 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:03:07,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 16 select indices, 16 select index equivalence classes, 36 disjoint index pairs (out of 120 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 162 treesize of output 60 [2021-06-05 06:03:07,919 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:03:07,924 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:03:07,925 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 06:03:07,925 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:168, output treesize:7 [2021-06-05 06:03:07,936 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 0 proven. 214 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:03:07,936 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1365631396] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:03:07,936 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:03:07,936 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 37 [2021-06-05 06:03:07,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070999080] [2021-06-05 06:03:07,937 INFO L462 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-06-05 06:03:07,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:03:07,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-06-05 06:03:07,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=1253, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 06:03:07,937 INFO L87 Difference]: Start difference. First operand 24831 states and 61645 transitions. Second operand has 38 states, 38 states have (on average 3.1578947368421053) internal successors, (120), 37 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:03:10,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:03:10,818 INFO L93 Difference]: Finished difference Result 44871 states and 111829 transitions. [2021-06-05 06:03:10,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 06:03:10,818 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.1578947368421053) internal successors, (120), 37 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-06-05 06:03:10,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:03:10,868 INFO L225 Difference]: With dead ends: 44871 [2021-06-05 06:03:10,868 INFO L226 Difference]: Without dead ends: 44783 [2021-06-05 06:03:10,868 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 53 SyntacticMatches, 3 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1323 ImplicationChecksByTransitivity, 2111.7ms TimeCoverageRelationStatistics Valid=454, Invalid=4802, Unknown=0, NotChecked=0, Total=5256 [2021-06-05 06:03:10,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44783 states. [2021-06-05 06:03:11,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44783 to 24479. [2021-06-05 06:03:11,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24479 states, 24478 states have (on average 2.4830868535011033) internal successors, (60781), 24478 states have internal predecessors, (60781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:03:11,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24479 states to 24479 states and 60781 transitions. [2021-06-05 06:03:11,251 INFO L78 Accepts]: Start accepts. Automaton has 24479 states and 60781 transitions. Word has length 71 [2021-06-05 06:03:11,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:03:11,251 INFO L482 AbstractCegarLoop]: Abstraction has 24479 states and 60781 transitions. [2021-06-05 06:03:11,251 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 3.1578947368421053) internal successors, (120), 37 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:03:11,251 INFO L276 IsEmpty]: Start isEmpty. Operand 24479 states and 60781 transitions. [2021-06-05 06:03:11,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-06-05 06:03:11,269 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:03:11,269 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:03:11,470 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170,168 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:03:11,470 INFO L430 AbstractCegarLoop]: === Iteration 172 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:03:11,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:03:11,470 INFO L82 PathProgramCache]: Analyzing trace with hash 129434547, now seen corresponding path program 165 times [2021-06-05 06:03:11,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:03:11,470 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058664957] [2021-06-05 06:03:11,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:03:11,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:03:11,902 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 9 proven. 205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:03:11,902 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:03:11,902 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058664957] [2021-06-05 06:03:11,902 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058664957] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:03:11,902 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928787506] [2021-06-05 06:03:11,902 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 169 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 169 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:03:11,936 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-06-05 06:03:11,936 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:03:11,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 74 conjunts are in the unsatisfiable core [2021-06-05 06:03:11,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:03:12,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:12,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:12,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:12,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:12,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:12,857 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:03:12,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:12,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:12,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:12,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:12,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:12,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:12,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:12,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:12,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:12,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:12,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:12,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:12,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:12,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:12,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:12,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:12,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:12,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:12,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:12,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:12,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:12,871 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:03:12,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:12,872 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:03:12,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:12,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:12,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:12,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:12,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:12,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:12,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:12,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:12,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:12,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:12,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:12,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:12,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:12,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:12,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:12,882 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:03:12,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:12,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:12,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:12,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:12,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:12,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:12,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:12,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:12,888 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:03:12,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:12,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:12,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:12,891 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:03:12,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:12,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:12,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:12,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:12,894 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:03:12,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:12,895 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 16 select indices, 16 select index equivalence classes, 36 disjoint index pairs (out of 120 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 162 treesize of output 60 [2021-06-05 06:03:12,896 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:03:12,901 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:03:12,902 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 06:03:12,902 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:168, output treesize:7 [2021-06-05 06:03:12,913 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 0 proven. 214 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:03:12,913 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [928787506] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:03:12,913 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:03:12,913 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 37 [2021-06-05 06:03:12,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967466816] [2021-06-05 06:03:12,913 INFO L462 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-06-05 06:03:12,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:03:12,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-06-05 06:03:12,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=1249, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 06:03:12,914 INFO L87 Difference]: Start difference. First operand 24479 states and 60781 transitions. Second operand has 38 states, 38 states have (on average 3.1578947368421053) internal successors, (120), 37 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:03:15,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:03:15,360 INFO L93 Difference]: Finished difference Result 45063 states and 112549 transitions. [2021-06-05 06:03:15,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 06:03:15,360 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.1578947368421053) internal successors, (120), 37 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-06-05 06:03:15,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:03:15,409 INFO L225 Difference]: With dead ends: 45063 [2021-06-05 06:03:15,409 INFO L226 Difference]: Without dead ends: 44879 [2021-06-05 06:03:15,410 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 53 SyntacticMatches, 3 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1347 ImplicationChecksByTransitivity, 2128.0ms TimeCoverageRelationStatistics Valid=466, Invalid=4790, Unknown=0, NotChecked=0, Total=5256 [2021-06-05 06:03:15,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44879 states. [2021-06-05 06:03:15,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44879 to 24367. [2021-06-05 06:03:15,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24367 states, 24366 states have (on average 2.48300911105639) internal successors, (60501), 24366 states have internal predecessors, (60501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:03:15,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24367 states to 24367 states and 60501 transitions. [2021-06-05 06:03:15,794 INFO L78 Accepts]: Start accepts. Automaton has 24367 states and 60501 transitions. Word has length 71 [2021-06-05 06:03:15,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:03:15,794 INFO L482 AbstractCegarLoop]: Abstraction has 24367 states and 60501 transitions. [2021-06-05 06:03:15,794 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 3.1578947368421053) internal successors, (120), 37 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:03:15,794 INFO L276 IsEmpty]: Start isEmpty. Operand 24367 states and 60501 transitions. [2021-06-05 06:03:15,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-06-05 06:03:15,812 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:03:15,812 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:03:16,012 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 169 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable171 [2021-06-05 06:03:16,013 INFO L430 AbstractCegarLoop]: === Iteration 173 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:03:16,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:03:16,013 INFO L82 PathProgramCache]: Analyzing trace with hash -1309650509, now seen corresponding path program 166 times [2021-06-05 06:03:16,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:03:16,013 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006876179] [2021-06-05 06:03:16,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:03:16,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:03:16,413 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 9 proven. 205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:03:16,413 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:03:16,413 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006876179] [2021-06-05 06:03:16,413 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006876179] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:03:16,413 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2014631487] [2021-06-05 06:03:16,413 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 170 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 170 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:03:16,444 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:03:16,444 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:03:16,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 74 conjunts are in the unsatisfiable core [2021-06-05 06:03:16,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:03:17,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:17,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:17,344 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:03:17,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:17,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:17,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:17,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:17,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:17,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:17,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:17,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:17,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:17,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:17,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:17,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:17,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:17,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:17,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:17,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:17,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:17,355 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:03:17,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:17,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:17,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:17,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:17,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:17,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:17,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:17,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:17,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:17,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:17,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:17,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:17,363 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:03:17,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:17,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:17,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:17,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:17,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:17,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:17,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:17,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:17,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:17,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:17,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:17,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:17,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:17,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:17,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:17,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:17,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:17,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:17,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:17,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:17,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:17,378 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:03:17,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:17,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:17,379 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:03:17,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:17,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:17,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:17,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:17,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:17,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:17,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:17,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:17,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:17,386 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:03:17,386 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:03:17,387 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 16 select indices, 16 select index equivalence classes, 36 disjoint index pairs (out of 120 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 162 treesize of output 60 [2021-06-05 06:03:17,389 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:03:17,395 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:03:17,396 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 06:03:17,396 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:168, output treesize:7 [2021-06-05 06:03:17,406 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 9 proven. 205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:03:17,406 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2014631487] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:03:17,406 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:03:17,406 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 22] total 36 [2021-06-05 06:03:17,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246852440] [2021-06-05 06:03:17,406 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-06-05 06:03:17,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:03:17,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-06-05 06:03:17,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1183, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 06:03:17,407 INFO L87 Difference]: Start difference. First operand 24367 states and 60501 transitions. Second operand has 37 states, 37 states have (on average 3.135135135135135) internal successors, (116), 36 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:03:20,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:03:20,015 INFO L93 Difference]: Finished difference Result 43895 states and 109421 transitions. [2021-06-05 06:03:20,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 06:03:20,016 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.135135135135135) internal successors, (116), 36 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-06-05 06:03:20,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:03:20,062 INFO L225 Difference]: With dead ends: 43895 [2021-06-05 06:03:20,062 INFO L226 Difference]: Without dead ends: 43807 [2021-06-05 06:03:20,063 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 54 SyntacticMatches, 3 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1277 ImplicationChecksByTransitivity, 2014.8ms TimeCoverageRelationStatistics Valid=442, Invalid=4528, Unknown=0, NotChecked=0, Total=4970 [2021-06-05 06:03:20,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43807 states. [2021-06-05 06:03:20,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43807 to 24047. [2021-06-05 06:03:20,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24047 states, 24046 states have (on average 2.4827829992514348) internal successors, (59701), 24046 states have internal predecessors, (59701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:03:20,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24047 states to 24047 states and 59701 transitions. [2021-06-05 06:03:20,434 INFO L78 Accepts]: Start accepts. Automaton has 24047 states and 59701 transitions. Word has length 71 [2021-06-05 06:03:20,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:03:20,434 INFO L482 AbstractCegarLoop]: Abstraction has 24047 states and 59701 transitions. [2021-06-05 06:03:20,434 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 3.135135135135135) internal successors, (116), 36 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:03:20,434 INFO L276 IsEmpty]: Start isEmpty. Operand 24047 states and 59701 transitions. [2021-06-05 06:03:20,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-06-05 06:03:20,452 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:03:20,452 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:03:20,656 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172,170 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:03:20,657 INFO L430 AbstractCegarLoop]: === Iteration 174 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:03:20,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:03:20,657 INFO L82 PathProgramCache]: Analyzing trace with hash -1721424461, now seen corresponding path program 167 times [2021-06-05 06:03:20,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:03:20,657 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653760093] [2021-06-05 06:03:20,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:03:20,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:03:21,112 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 9 proven. 205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:03:21,113 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:03:21,113 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653760093] [2021-06-05 06:03:21,113 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653760093] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:03:21,113 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1922006211] [2021-06-05 06:03:21,113 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 171 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 171 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:03:21,148 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-06-05 06:03:21,148 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:03:21,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 76 conjunts are in the unsatisfiable core [2021-06-05 06:03:21,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:03:22,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:22,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:22,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:22,189 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:03:22,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:22,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:22,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:22,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:22,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:22,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:22,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:22,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:22,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:22,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:22,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:22,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:22,197 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:03:22,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:22,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:22,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:22,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:22,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:22,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:22,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:22,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:22,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:22,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:22,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:22,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:22,206 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:03:22,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:22,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:22,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:22,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:22,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:22,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:22,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:22,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:22,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:22,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:22,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:22,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:22,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:22,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:22,215 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:03:22,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:22,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:22,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:22,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:22,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:22,219 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:03:22,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:22,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:22,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:22,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:22,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:22,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:22,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:22,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:22,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:22,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:22,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:22,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:22,227 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:03:22,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:22,228 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:03:22,229 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 16 select indices, 16 select index equivalence classes, 36 disjoint index pairs (out of 120 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 162 treesize of output 60 [2021-06-05 06:03:22,230 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:03:22,236 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:03:22,236 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 06:03:22,237 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:168, output treesize:7 [2021-06-05 06:03:22,247 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 0 proven. 214 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:03:22,247 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1922006211] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:03:22,247 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:03:22,247 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 37 [2021-06-05 06:03:22,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445535642] [2021-06-05 06:03:22,248 INFO L462 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-06-05 06:03:22,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:03:22,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-06-05 06:03:22,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=1247, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 06:03:22,248 INFO L87 Difference]: Start difference. First operand 24047 states and 59701 transitions. Second operand has 38 states, 38 states have (on average 3.1578947368421053) internal successors, (120), 37 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:03:25,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:03:25,236 INFO L93 Difference]: Finished difference Result 42839 states and 106809 transitions. [2021-06-05 06:03:25,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 06:03:25,236 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.1578947368421053) internal successors, (120), 37 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-06-05 06:03:25,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:03:25,282 INFO L225 Difference]: With dead ends: 42839 [2021-06-05 06:03:25,282 INFO L226 Difference]: Without dead ends: 42207 [2021-06-05 06:03:25,283 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 53 SyntacticMatches, 3 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1342 ImplicationChecksByTransitivity, 2221.4ms TimeCoverageRelationStatistics Valid=472, Invalid=4784, Unknown=0, NotChecked=0, Total=5256 [2021-06-05 06:03:25,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42207 states. [2021-06-05 06:03:25,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42207 to 24559. [2021-06-05 06:03:25,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24559 states, 24558 states have (on average 2.4824904308168416) internal successors, (60965), 24558 states have internal predecessors, (60965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:03:25,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24559 states to 24559 states and 60965 transitions. [2021-06-05 06:03:25,651 INFO L78 Accepts]: Start accepts. Automaton has 24559 states and 60965 transitions. Word has length 71 [2021-06-05 06:03:25,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:03:25,652 INFO L482 AbstractCegarLoop]: Abstraction has 24559 states and 60965 transitions. [2021-06-05 06:03:25,652 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 3.1578947368421053) internal successors, (120), 37 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:03:25,652 INFO L276 IsEmpty]: Start isEmpty. Operand 24559 states and 60965 transitions. [2021-06-05 06:03:25,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-06-05 06:03:25,668 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:03:25,668 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:03:25,869 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173,171 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:03:25,869 INFO L430 AbstractCegarLoop]: === Iteration 175 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:03:25,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:03:25,869 INFO L82 PathProgramCache]: Analyzing trace with hash 1197199283, now seen corresponding path program 168 times [2021-06-05 06:03:25,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:03:25,869 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555002164] [2021-06-05 06:03:25,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:03:25,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:03:26,300 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 9 proven. 205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:03:26,300 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:03:26,300 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555002164] [2021-06-05 06:03:26,300 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555002164] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:03:26,300 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988768526] [2021-06-05 06:03:26,300 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 172 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 172 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:03:26,336 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2021-06-05 06:03:26,336 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:03:26,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 75 conjunts are in the unsatisfiable core [2021-06-05 06:03:26,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:03:28,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:28,980 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:03:28,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:28,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:28,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:28,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:28,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:28,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:28,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:28,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:28,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:28,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:28,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:28,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:28,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:28,989 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:03:28,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:28,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:28,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:28,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:28,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:28,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:28,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:28,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:28,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:28,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:28,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:28,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:28,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:28,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:28,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:29,000 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:03:29,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:29,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:29,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:29,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:29,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:29,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:29,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:29,005 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:03:29,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:29,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:29,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:29,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:29,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:29,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:29,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:29,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:29,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:29,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:29,012 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:03:29,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:29,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:29,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:29,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:29,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:29,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:29,017 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:03:29,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:29,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:29,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:29,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:29,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:29,021 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:03:29,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:03:29,022 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 16 select indices, 16 select index equivalence classes, 36 disjoint index pairs (out of 120 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 158 treesize of output 60 [2021-06-05 06:03:29,023 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:03:29,037 INFO L628 ElimStorePlain]: treesize reduction 5, result has 81.5 percent of original size [2021-06-05 06:03:29,038 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 06:03:29,038 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:178, output treesize:7 [2021-06-05 06:03:29,048 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 0 proven. 214 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:03:29,049 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1988768526] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:03:29,049 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:03:29,049 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 37 [2021-06-05 06:03:29,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507522898] [2021-06-05 06:03:29,049 INFO L462 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-06-05 06:03:29,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:03:29,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-06-05 06:03:29,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=1247, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 06:03:29,049 INFO L87 Difference]: Start difference. First operand 24559 states and 60965 transitions. Second operand has 38 states, 38 states have (on average 3.1578947368421053) internal successors, (120), 37 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2021-06-05 06:03:31,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-05 06:03:31,707 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174,172 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:03:31,708 WARN L547 AbstractCegarLoop]: Verification canceled [2021-06-05 06:03:31,709 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-05 06:03:31,711 WARN L196 ceAbstractionStarter]: Timeout [2021-06-05 06:03:31,711 INFO L202 PluginConnector]: Adding new model send-receive.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.06 06:03:31 BasicIcfg [2021-06-05 06:03:31,711 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-05 06:03:31,711 INFO L168 Benchmark]: Toolchain (without parser) took 804541.17 ms. Allocated memory was 385.9 MB in the beginning and 4.8 GB in the end (delta: 4.4 GB). Free memory was 365.3 MB in the beginning and 1.5 GB in the end (delta: -1.1 GB). Peak memory consumption was 3.3 GB. Max. memory is 16.0 GB. [2021-06-05 06:03:31,711 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.18 ms. Allocated memory is still 385.9 MB. Free memory was 366.4 MB in the beginning and 366.4 MB in the end (delta: 70.3 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 06:03:31,711 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.10 ms. Allocated memory is still 385.9 MB. Free memory was 365.2 MB in the beginning and 363.8 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 06:03:31,712 INFO L168 Benchmark]: Boogie Preprocessor took 13.59 ms. Allocated memory is still 385.9 MB. Free memory was 363.8 MB in the beginning and 362.8 MB in the end (delta: 985.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 06:03:31,712 INFO L168 Benchmark]: RCFGBuilder took 227.75 ms. Allocated memory is still 385.9 MB. Free memory was 362.7 MB in the beginning and 349.8 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2021-06-05 06:03:31,712 INFO L168 Benchmark]: TraceAbstraction took 804272.01 ms. Allocated memory was 385.9 MB in the beginning and 4.8 GB in the end (delta: 4.4 GB). Free memory was 349.4 MB in the beginning and 1.5 GB in the end (delta: -1.1 GB). Peak memory consumption was 3.3 GB. Max. memory is 16.0 GB. [2021-06-05 06:03:31,712 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.18 ms. Allocated memory is still 385.9 MB. Free memory was 366.4 MB in the beginning and 366.4 MB in the end (delta: 70.3 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 22.10 ms. Allocated memory is still 385.9 MB. Free memory was 365.2 MB in the beginning and 363.8 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 13.59 ms. Allocated memory is still 385.9 MB. Free memory was 363.8 MB in the beginning and 362.8 MB in the end (delta: 985.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 227.75 ms. Allocated memory is still 385.9 MB. Free memory was 362.7 MB in the beginning and 349.8 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 804272.01 ms. Allocated memory was 385.9 MB in the beginning and 4.8 GB in the end (delta: 4.4 GB). Free memory was 349.4 MB in the beginning and 1.5 GB in the end (delta: -1.1 GB). Peak memory consumption was 3.3 GB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 63]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (24559states) and FLOYD_HOARE automaton (currently 25 states, 38 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 58 known predicates. - TimeoutResultAtElement [Line: 64]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (24559states) and FLOYD_HOARE automaton (currently 25 states, 38 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 58 known predicates. - TimeoutResultAtElement [Line: 63]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (24559states) and FLOYD_HOARE automaton (currently 25 states, 38 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 58 known predicates. - TimeoutResultAtElement [Line: 69]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while BasicCegarLoop was constructing difference of abstraction (24559states) and FLOYD_HOARE automaton (currently 25 states, 38 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 58 known predicates. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 45 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 804182.1ms, OverallIterations: 175, TraceHistogramMax: 9, EmptinessCheckTime: 2123.8ms, AutomataDifference: 541049.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 66.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 14746 SDtfs, 39548 SDslu, 211366 SDs, 0 SdLazy, 230130 SolverSat, 9586 SolverUnsat, 50 SolverUnknown, 0 SolverNotchecked, 317657.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16801 GetRequests, 7941 SyntacticMatches, 541 SemanticMatches, 8318 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118486 ImplicationChecksByTransitivity, 324388.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=34367occurred in iteration=143, InterpolantAutomatonStates: 4792, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 35044.2ms AutomataMinimizationTime, 174 MinimizatonAttempts, 1215992 StatesRemovedByMinimization, 171 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 820.0ms SsaConstructionTime, 3531.9ms SatisfiabilityAnalysisTime, 182688.5ms InterpolantComputationTime, 20162 NumberOfCodeBlocks, 20162 NumberOfCodeBlocksAsserted, 937 NumberOfCheckSat, 19816 ConstructedInterpolants, 1398 QuantifiedInterpolants, 709502 SizeOfPredicates, 361 NumberOfNonLiveVariables, 22137 ConjunctsInSsa, 9626 ConjunctsInUnsatCore, 346 InterpolantComputations, 5 PerfectInterpolantSequences, 2938/46547 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown