/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/regression/showcase/Bakery.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-c7b2d19 [2022-03-15 20:35:07,684 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-15 20:35:07,686 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-15 20:35:07,736 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-15 20:35:07,794 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-15 20:35:07,794 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-15 20:35:07,795 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-15 20:35:07,798 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2022-03-15 20:35:07,830 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-15 20:35:07,830 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-15 20:35:07,831 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-15 20:35:07,831 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-15 20:35:07,831 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-15 20:35:07,831 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-15 20:35:07,831 INFO L138 SettingsManager]: * Use SBE=true [2022-03-15 20:35:07,832 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-15 20:35:07,832 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-15 20:35:07,832 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-15 20:35:07,832 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-15 20:35:07,832 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-15 20:35:07,832 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-15 20:35:07,832 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-15 20:35:07,833 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-15 20:35:07,833 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-15 20:35:07,833 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-15 20:35:07,833 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-15 20:35:07,833 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-15 20:35:07,833 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-15 20:35:07,833 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-15 20:35:07,833 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-15 20:35:07,834 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-15 20:35:07,834 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 20:35:07,834 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-15 20:35:07,834 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-15 20:35:07,834 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-15 20:35:07,834 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-15 20:35:07,834 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-15 20:35:07,834 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2022-03-15 20:35:07,835 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2022-03-15 20:35:07,835 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-15 20:35:07,837 INFO L138 SettingsManager]: * Interpolant automaton=MCR 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-15 20:35:08,031 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-15 20:35:08,054 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-15 20:35:08,056 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-15 20:35:08,057 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-03-15 20:35:08,059 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-03-15 20:35:08,060 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/showcase/Bakery.bpl [2022-03-15 20:35:08,060 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/showcase/Bakery.bpl' [2022-03-15 20:35:08,084 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-15 20:35:08,085 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-15 20:35:08,086 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-15 20:35:08,086 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-15 20:35:08,086 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-15 20:35:08,096 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "Bakery.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:35:08" (1/1) ... [2022-03-15 20:35:08,102 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "Bakery.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:35:08" (1/1) ... [2022-03-15 20:35:08,107 INFO L137 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-03-15 20:35:08,108 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-15 20:35:08,109 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-15 20:35:08,109 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-15 20:35:08,109 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-15 20:35:08,116 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "Bakery.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:35:08" (1/1) ... [2022-03-15 20:35:08,116 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "Bakery.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:35:08" (1/1) ... [2022-03-15 20:35:08,117 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "Bakery.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:35:08" (1/1) ... [2022-03-15 20:35:08,117 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "Bakery.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:35:08" (1/1) ... [2022-03-15 20:35:08,119 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "Bakery.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:35:08" (1/1) ... [2022-03-15 20:35:08,122 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "Bakery.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:35:08" (1/1) ... [2022-03-15 20:35:08,122 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "Bakery.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:35:08" (1/1) ... [2022-03-15 20:35:08,123 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-15 20:35:08,125 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-15 20:35:08,126 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-15 20:35:08,126 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-15 20:35:08,127 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "Bakery.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:35:08" (1/1) ... [2022-03-15 20:35:08,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 20:35:08,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 20:35:08,161 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-15 20:35:08,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-15 20:35:08,203 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Process0 given in one single declaration [2022-03-15 20:35:08,203 INFO L130 BoogieDeclarations]: Found specification of procedure Process0 [2022-03-15 20:35:08,203 INFO L138 BoogieDeclarations]: Found implementation of procedure Process0 [2022-03-15 20:35:08,203 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Process1 given in one single declaration [2022-03-15 20:35:08,203 INFO L130 BoogieDeclarations]: Found specification of procedure Process1 [2022-03-15 20:35:08,203 INFO L138 BoogieDeclarations]: Found implementation of procedure Process1 [2022-03-15 20:35:08,203 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-03-15 20:35:08,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-15 20:35:08,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-15 20:35:08,204 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-15 20:35:08,246 INFO L234 CfgBuilder]: Building ICFG [2022-03-15 20:35:08,247 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-15 20:35:08,334 INFO L275 CfgBuilder]: Performing block encoding [2022-03-15 20:35:08,346 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-15 20:35:08,346 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-03-15 20:35:08,348 INFO L202 PluginConnector]: Adding new model Bakery.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 08:35:08 BoogieIcfgContainer [2022-03-15 20:35:08,348 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-15 20:35:08,349 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-15 20:35:08,349 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-15 20:35:08,366 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-15 20:35:08,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Bakery.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:35:08" (1/2) ... [2022-03-15 20:35:08,367 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67ad1376 and model type Bakery.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 08:35:08, skipping insertion in model container [2022-03-15 20:35:08,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Bakery.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 08:35:08" (2/2) ... [2022-03-15 20:35:08,368 INFO L111 eAbstractionObserver]: Analyzing ICFG Bakery.bpl [2022-03-15 20:35:08,372 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-15 20:35:08,372 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-15 20:35:08,373 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-03-15 20:35:08,373 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-15 20:35:08,422 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-03-15 20:35:08,486 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-15 20:35:08,497 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=MCR, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mLazyFiniteAutomaton=false, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=true, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-03-15 20:35:08,497 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-03-15 20:35:08,510 INFO L126 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-03-15 20:35:08,524 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 31 places, 26 transitions, 62 flow [2022-03-15 20:35:08,531 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 31 places, 26 transitions, 62 flow [2022-03-15 20:35:08,533 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 31 places, 26 transitions, 62 flow [2022-03-15 20:35:08,565 INFO L129 PetriNetUnfolder]: 2/24 cut-off events. [2022-03-15 20:35:08,566 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-03-15 20:35:08,570 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 24 events. 2/24 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 45 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 22. Up to 2 conditions per place. [2022-03-15 20:35:08,574 INFO L116 LiptonReduction]: Number of co-enabled transitions 216 [2022-03-15 20:35:08,689 INFO L131 LiptonReduction]: Checked pairs total: 729 [2022-03-15 20:35:08,690 INFO L133 LiptonReduction]: Total number of compositions: 4 [2022-03-15 20:35:08,698 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 27 places, 22 transitions, 54 flow [2022-03-15 20:35:08,722 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 136 states, 133 states have (on average 2.5037593984962405) internal successors, (333), 135 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:35:08,725 INFO L276 IsEmpty]: Start isEmpty. Operand has 136 states, 133 states have (on average 2.5037593984962405) internal successors, (333), 135 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:35:08,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-03-15 20:35:08,736 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 20:35:08,737 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-03-15 20:35:08,737 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting Process0Err0ASSERT_VIOLATIONASSERT === [Process0Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2022-03-15 20:35:08,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 20:35:08,742 INFO L85 PathProgramCache]: Analyzing trace with hash 103815741, now seen corresponding path program 1 times [2022-03-15 20:35:08,758 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 20:35:08,759 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934240314] [2022-03-15 20:35:08,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 20:35:08,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 20:35:08,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 20:35:08,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 20:35:08,914 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 20:35:08,914 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934240314] [2022-03-15 20:35:08,915 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934240314] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 20:35:08,915 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 20:35:08,915 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-15 20:35:08,916 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [502551465] [2022-03-15 20:35:08,917 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 20:35:08,919 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 20:35:08,965 INFO L252 McrAutomatonBuilder]: Finished intersection with 6 states and 5 transitions. [2022-03-15 20:35:08,965 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 20:35:08,970 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 20:35:08,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-15 20:35:08,971 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 20:35:08,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-15 20:35:08,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-03-15 20:35:08,995 INFO L87 Difference]: Start difference. First operand has 136 states, 133 states have (on average 2.5037593984962405) internal successors, (333), 135 states have internal predecessors, (333), 0 states have call successors, (0), 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 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:35:09,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 20:35:09,059 INFO L93 Difference]: Finished difference Result 202 states and 486 transitions. [2022-03-15 20:35:09,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-15 20:35:09,061 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-03-15 20:35:09,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 20:35:09,075 INFO L225 Difference]: With dead ends: 202 [2022-03-15 20:35:09,075 INFO L226 Difference]: Without dead ends: 202 [2022-03-15 20:35:09,077 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-03-15 20:35:09,080 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 21 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 20:35:09,081 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 43 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 20:35:09,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2022-03-15 20:35:09,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 190. [2022-03-15 20:35:09,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 188 states have (on average 2.4893617021276597) internal successors, (468), 189 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:35:09,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 468 transitions. [2022-03-15 20:35:09,123 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 468 transitions. Word has length 5 [2022-03-15 20:35:09,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 20:35:09,124 INFO L470 AbstractCegarLoop]: Abstraction has 190 states and 468 transitions. [2022-03-15 20:35:09,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:35:09,124 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 468 transitions. [2022-03-15 20:35:09,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-03-15 20:35:09,125 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 20:35:09,125 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-03-15 20:35:09,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-15 20:35:09,125 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting Process1Err0ASSERT_VIOLATIONASSERT === [Process0Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2022-03-15 20:35:09,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 20:35:09,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1076046703, now seen corresponding path program 1 times [2022-03-15 20:35:09,127 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 20:35:09,127 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617156480] [2022-03-15 20:35:09,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 20:35:09,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 20:35:09,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 20:35:09,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 20:35:09,144 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 20:35:09,144 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617156480] [2022-03-15 20:35:09,144 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617156480] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 20:35:09,144 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 20:35:09,144 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-03-15 20:35:09,145 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1113079638] [2022-03-15 20:35:09,145 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 20:35:09,145 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 20:35:09,145 INFO L252 McrAutomatonBuilder]: Finished intersection with 7 states and 6 transitions. [2022-03-15 20:35:09,146 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 20:35:09,146 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 20:35:09,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-15 20:35:09,147 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 20:35:09,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-15 20:35:09,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 20:35:09,148 INFO L87 Difference]: Start difference. First operand 190 states and 468 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:35:09,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 20:35:09,166 INFO L93 Difference]: Finished difference Result 214 states and 490 transitions. [2022-03-15 20:35:09,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-15 20:35:09,167 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-03-15 20:35:09,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 20:35:09,168 INFO L225 Difference]: With dead ends: 214 [2022-03-15 20:35:09,169 INFO L226 Difference]: Without dead ends: 214 [2022-03-15 20:35:09,169 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 20:35:09,170 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 7 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 20:35:09,171 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 22 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 20:35:09,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2022-03-15 20:35:09,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 200. [2022-03-15 20:35:09,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 199 states have (on average 2.2964824120603016) internal successors, (457), 199 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:35:09,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 457 transitions. [2022-03-15 20:35:09,185 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 457 transitions. Word has length 6 [2022-03-15 20:35:09,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 20:35:09,186 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 457 transitions. [2022-03-15 20:35:09,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:35:09,186 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 457 transitions. [2022-03-15 20:35:09,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-03-15 20:35:09,187 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 20:35:09,187 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 20:35:09,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-15 20:35:09,187 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting Process0Err0ASSERT_VIOLATIONASSERT === [Process0Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2022-03-15 20:35:09,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 20:35:09,188 INFO L85 PathProgramCache]: Analyzing trace with hash 389697493, now seen corresponding path program 1 times [2022-03-15 20:35:09,189 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 20:35:09,189 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510267446] [2022-03-15 20:35:09,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 20:35:09,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 20:35:09,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 20:35:09,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 20:35:09,226 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 20:35:09,226 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510267446] [2022-03-15 20:35:09,226 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510267446] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 20:35:09,227 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 20:35:09,227 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-15 20:35:09,227 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [718424041] [2022-03-15 20:35:09,227 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 20:35:09,228 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 20:35:09,229 INFO L252 McrAutomatonBuilder]: Finished intersection with 15 states and 18 transitions. [2022-03-15 20:35:09,229 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 20:35:09,277 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [1514#(and (not (< n1 n0)) (not (= n0 0)))] [2022-03-15 20:35:09,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-15 20:35:09,278 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 20:35:09,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-15 20:35:09,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-15 20:35:09,278 INFO L87 Difference]: Start difference. First operand 200 states and 457 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:35:09,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 20:35:09,326 INFO L93 Difference]: Finished difference Result 256 states and 563 transitions. [2022-03-15 20:35:09,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-15 20:35:09,326 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-03-15 20:35:09,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 20:35:09,328 INFO L225 Difference]: With dead ends: 256 [2022-03-15 20:35:09,328 INFO L226 Difference]: Without dead ends: 256 [2022-03-15 20:35:09,329 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-15 20:35:09,330 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 51 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 20:35:09,330 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 77 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 20:35:09,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2022-03-15 20:35:09,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 238. [2022-03-15 20:35:09,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 237 states have (on average 2.2447257383966246) internal successors, (532), 237 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:35:09,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 532 transitions. [2022-03-15 20:35:09,345 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 532 transitions. Word has length 10 [2022-03-15 20:35:09,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 20:35:09,346 INFO L470 AbstractCegarLoop]: Abstraction has 238 states and 532 transitions. [2022-03-15 20:35:09,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:35:09,346 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 532 transitions. [2022-03-15 20:35:09,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-03-15 20:35:09,347 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 20:35:09,347 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 20:35:09,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-15 20:35:09,347 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting Process0Err0ASSERT_VIOLATIONASSERT === [Process0Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2022-03-15 20:35:09,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 20:35:09,348 INFO L85 PathProgramCache]: Analyzing trace with hash 628910821, now seen corresponding path program 2 times [2022-03-15 20:35:09,349 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 20:35:09,349 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245814524] [2022-03-15 20:35:09,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 20:35:09,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 20:35:09,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 20:35:09,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 20:35:09,428 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 20:35:09,428 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245814524] [2022-03-15 20:35:09,428 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245814524] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 20:35:09,428 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 20:35:09,428 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-15 20:35:09,429 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [650711349] [2022-03-15 20:35:09,429 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 20:35:09,429 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 20:35:09,430 INFO L252 McrAutomatonBuilder]: Finished intersection with 15 states and 18 transitions. [2022-03-15 20:35:09,430 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 20:35:09,516 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 20:35:09,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-15 20:35:09,517 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 20:35:09,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-15 20:35:09,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-15 20:35:09,518 INFO L87 Difference]: Start difference. First operand 238 states and 532 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:35:09,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 20:35:09,567 INFO L93 Difference]: Finished difference Result 304 states and 663 transitions. [2022-03-15 20:35:09,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-15 20:35:09,568 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-03-15 20:35:09,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 20:35:09,569 INFO L225 Difference]: With dead ends: 304 [2022-03-15 20:35:09,569 INFO L226 Difference]: Without dead ends: 304 [2022-03-15 20:35:09,570 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-03-15 20:35:09,571 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 38 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 20:35:09,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 48 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 20:35:09,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2022-03-15 20:35:09,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 256. [2022-03-15 20:35:09,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 255 states have (on average 2.2627450980392156) internal successors, (577), 255 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:35:09,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 577 transitions. [2022-03-15 20:35:09,596 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 577 transitions. Word has length 10 [2022-03-15 20:35:09,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 20:35:09,596 INFO L470 AbstractCegarLoop]: Abstraction has 256 states and 577 transitions. [2022-03-15 20:35:09,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:35:09,597 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 577 transitions. [2022-03-15 20:35:09,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-03-15 20:35:09,598 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 20:35:09,598 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 20:35:09,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-15 20:35:09,598 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting Process1Err0ASSERT_VIOLATIONASSERT === [Process0Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2022-03-15 20:35:09,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 20:35:09,599 INFO L85 PathProgramCache]: Analyzing trace with hash 2145675788, now seen corresponding path program 1 times [2022-03-15 20:35:09,600 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 20:35:09,600 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733324766] [2022-03-15 20:35:09,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 20:35:09,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 20:35:09,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 20:35:09,652 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 20:35:09,652 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 20:35:09,652 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733324766] [2022-03-15 20:35:09,652 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733324766] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 20:35:09,652 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 20:35:09,653 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-15 20:35:09,653 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1946710687] [2022-03-15 20:35:09,653 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 20:35:09,654 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 20:35:09,655 INFO L252 McrAutomatonBuilder]: Finished intersection with 24 states and 30 transitions. [2022-03-15 20:35:09,655 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 20:35:09,723 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 20:35:09,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-15 20:35:09,723 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 20:35:09,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-15 20:35:09,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-03-15 20:35:09,724 INFO L87 Difference]: Start difference. First operand 256 states and 577 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 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) [2022-03-15 20:35:09,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 20:35:09,762 INFO L93 Difference]: Finished difference Result 200 states and 433 transitions. [2022-03-15 20:35:09,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-15 20:35:09,763 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 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 16 [2022-03-15 20:35:09,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 20:35:09,764 INFO L225 Difference]: With dead ends: 200 [2022-03-15 20:35:09,764 INFO L226 Difference]: Without dead ends: 200 [2022-03-15 20:35:09,764 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2022-03-15 20:35:09,765 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 36 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 20:35:09,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 54 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 20:35:09,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2022-03-15 20:35:09,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 160. [2022-03-15 20:35:09,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 160 states have (on average 2.20625) internal successors, (353), 159 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:35:09,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 353 transitions. [2022-03-15 20:35:09,775 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 353 transitions. Word has length 16 [2022-03-15 20:35:09,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 20:35:09,775 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 353 transitions. [2022-03-15 20:35:09,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 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) [2022-03-15 20:35:09,775 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 353 transitions. [2022-03-15 20:35:09,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-03-15 20:35:09,776 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 20:35:09,777 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 20:35:09,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-15 20:35:09,777 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting Process1Err0ASSERT_VIOLATIONASSERT === [Process0Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2022-03-15 20:35:09,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 20:35:09,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1463642198, now seen corresponding path program 2 times [2022-03-15 20:35:09,784 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 20:35:09,784 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822955260] [2022-03-15 20:35:09,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 20:35:09,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 20:35:09,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 20:35:09,840 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 20:35:09,841 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 20:35:09,841 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822955260] [2022-03-15 20:35:09,841 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822955260] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 20:35:09,841 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 20:35:09,841 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-15 20:35:09,842 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1922119505] [2022-03-15 20:35:09,842 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 20:35:09,843 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 20:35:09,846 INFO L252 McrAutomatonBuilder]: Finished intersection with 21 states and 24 transitions. [2022-03-15 20:35:09,846 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 20:35:09,902 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 20:35:09,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-15 20:35:09,902 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 20:35:09,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-15 20:35:09,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-15 20:35:09,903 INFO L87 Difference]: Start difference. First operand 160 states and 353 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:35:09,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 20:35:09,952 INFO L93 Difference]: Finished difference Result 204 states and 433 transitions. [2022-03-15 20:35:09,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-15 20:35:09,952 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-03-15 20:35:09,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 20:35:09,954 INFO L225 Difference]: With dead ends: 204 [2022-03-15 20:35:09,954 INFO L226 Difference]: Without dead ends: 204 [2022-03-15 20:35:09,954 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-03-15 20:35:09,959 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 33 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 20:35:09,960 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 59 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 20:35:09,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2022-03-15 20:35:09,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 158. [2022-03-15 20:35:09,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 157 states have (on average 2.1656050955414012) internal successors, (340), 157 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:35:09,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 340 transitions. [2022-03-15 20:35:09,972 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 340 transitions. Word has length 16 [2022-03-15 20:35:09,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 20:35:09,972 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 340 transitions. [2022-03-15 20:35:09,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:35:09,973 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 340 transitions. [2022-03-15 20:35:09,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-03-15 20:35:09,978 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 20:35:09,978 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 20:35:09,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-15 20:35:09,978 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting Process0Err0ASSERT_VIOLATIONASSERT === [Process0Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2022-03-15 20:35:09,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 20:35:09,979 INFO L85 PathProgramCache]: Analyzing trace with hash -283656677, now seen corresponding path program 1 times [2022-03-15 20:35:09,982 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 20:35:09,982 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031051252] [2022-03-15 20:35:09,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 20:35:09,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 20:35:09,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 20:35:10,031 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 20:35:10,031 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 20:35:10,031 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031051252] [2022-03-15 20:35:10,031 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031051252] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 20:35:10,031 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 20:35:10,031 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-15 20:35:10,031 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [203410562] [2022-03-15 20:35:10,032 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 20:35:10,033 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 20:35:10,035 INFO L252 McrAutomatonBuilder]: Finished intersection with 30 states and 36 transitions. [2022-03-15 20:35:10,035 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 20:35:10,080 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 20:35:10,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-15 20:35:10,081 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 20:35:10,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-15 20:35:10,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-03-15 20:35:10,081 INFO L87 Difference]: Start difference. First operand 158 states and 340 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 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) [2022-03-15 20:35:10,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 20:35:10,126 INFO L93 Difference]: Finished difference Result 130 states and 258 transitions. [2022-03-15 20:35:10,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-15 20:35:10,126 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 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 22 [2022-03-15 20:35:10,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 20:35:10,126 INFO L225 Difference]: With dead ends: 130 [2022-03-15 20:35:10,127 INFO L226 Difference]: Without dead ends: 0 [2022-03-15 20:35:10,127 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2022-03-15 20:35:10,127 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 29 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 20:35:10,128 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 63 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 20:35:10,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-15 20:35:10,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-15 20:35:10,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:35:10,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-15 20:35:10,129 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2022-03-15 20:35:10,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 20:35:10,129 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-15 20:35:10,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 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) [2022-03-15 20:35:10,129 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-15 20:35:10,129 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-15 20:35:10,131 INFO L764 garLoopResultBuilder]: Registering result SAFE for location Process0Err0ASSERT_VIOLATIONASSERT (5 of 6 remaining) [2022-03-15 20:35:10,132 INFO L764 garLoopResultBuilder]: Registering result SAFE for location Process1Err0ASSERT_VIOLATIONASSERT (4 of 6 remaining) [2022-03-15 20:35:10,132 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (3 of 6 remaining) [2022-03-15 20:35:10,132 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (2 of 6 remaining) [2022-03-15 20:35:10,132 INFO L764 garLoopResultBuilder]: Registering result SAFE for location Process0Err0ASSERT_VIOLATIONASSERT (1 of 6 remaining) [2022-03-15 20:35:10,132 INFO L764 garLoopResultBuilder]: Registering result SAFE for location Process1Err0ASSERT_VIOLATIONASSERT (0 of 6 remaining) [2022-03-15 20:35:10,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-03-15 20:35:10,134 INFO L732 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1] [2022-03-15 20:35:10,137 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-15 20:35:10,137 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-15 20:35:10,139 INFO L202 PluginConnector]: Adding new model Bakery.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.03 08:35:10 BasicIcfg [2022-03-15 20:35:10,140 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-15 20:35:10,140 INFO L158 Benchmark]: Toolchain (without parser) took 2054.80ms. Allocated memory was 187.7MB in the beginning and 263.2MB in the end (delta: 75.5MB). Free memory was 146.2MB in the beginning and 151.5MB in the end (delta: -5.3MB). Peak memory consumption was 70.2MB. Max. memory is 8.0GB. [2022-03-15 20:35:10,140 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.13ms. Allocated memory is still 187.7MB. Free memory is still 147.2MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-15 20:35:10,141 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.47ms. Allocated memory is still 187.7MB. Free memory was 146.2MB in the beginning and 144.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-15 20:35:10,141 INFO L158 Benchmark]: Boogie Preprocessor took 15.32ms. Allocated memory is still 187.7MB. Free memory was 144.6MB in the beginning and 143.7MB in the end (delta: 895.4kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-15 20:35:10,141 INFO L158 Benchmark]: RCFGBuilder took 222.42ms. Allocated memory is still 187.7MB. Free memory was 143.5MB in the beginning and 135.2MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2022-03-15 20:35:10,141 INFO L158 Benchmark]: TraceAbstraction took 1790.43ms. Allocated memory was 187.7MB in the beginning and 263.2MB in the end (delta: 75.5MB). Free memory was 134.6MB in the beginning and 151.5MB in the end (delta: -16.8MB). Peak memory consumption was 58.6MB. Max. memory is 8.0GB. [2022-03-15 20:35:10,142 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 0.13ms. Allocated memory is still 187.7MB. Free memory is still 147.2MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 22.47ms. Allocated memory is still 187.7MB. Free memory was 146.2MB in the beginning and 144.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 15.32ms. Allocated memory is still 187.7MB. Free memory was 144.6MB in the beginning and 143.7MB in the end (delta: 895.4kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 222.42ms. Allocated memory is still 187.7MB. Free memory was 143.5MB in the beginning and 135.2MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * TraceAbstraction took 1790.43ms. Allocated memory was 187.7MB in the beginning and 263.2MB in the end (delta: 75.5MB). Free memory was 134.6MB in the beginning and 151.5MB in the end (delta: -16.8MB). Peak memory consumption was 58.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.2s, 31 PlacesBefore, 27 PlacesAfterwards, 26 TransitionsBefore, 22 TransitionsAfterwards, 216 CoEnabledTransitionPairs, 2 FixpointIterations, 2 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 4 TotalNumberOfCompositions, 729 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 318, positive: 246, positive conditional: 0, positive unconditional: 246, negative: 72, negative conditional: 0, negative unconditional: 72, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 65, positive: 54, positive conditional: 0, positive unconditional: 54, negative: 11, negative conditional: 0, negative unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 318, positive: 192, positive conditional: 0, positive unconditional: 192, negative: 61, negative conditional: 0, negative unconditional: 61, unknown: 65, unknown conditional: 0, unknown unconditional: 65] , Statistics on independence cache: Total cache size (in pairs): 43, Positive cache size: 32, Positive conditional cache size: 0, Positive unconditional cache size: 32, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 38]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 53]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 45 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 1.7s, OverallIterations: 7, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 215 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 215 mSDsluCounter, 366 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 244 mSDsCounter, 34 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 216 IncrementalHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 34 mSolverCounterUnsat, 146 mSDtfsCounter, 216 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 64 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=256occurred in iteration=4, InterpolantAutomatonStates: 37, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 178 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 85 NumberOfCodeBlocks, 85 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 78 ConstructedInterpolants, 0 QuantifiedInterpolants, 220 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 13/13 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 - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-03-15 20:35:10,170 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...