/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-MCRwithDepranks.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/easy1.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-44898dd [2022-02-09 19:56:35,620 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-09 19:56:35,622 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-09 19:56:35,672 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-09 19:56:35,713 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-MCRwithDepranks.epf [2022-02-09 19:56:35,746 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-09 19:56:35,746 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-09 19:56:35,746 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-09 19:56:35,746 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-09 19:56:35,754 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-09 19:56:35,755 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-09 19:56:35,755 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-09 19:56:35,756 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-09 19:56:35,756 INFO L138 SettingsManager]: * Use SBE=true [2022-02-09 19:56:35,756 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-09 19:56:35,757 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-09 19:56:35,757 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-09 19:56:35,757 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-09 19:56:35,757 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-09 19:56:35,757 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-09 19:56:35,757 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-09 19:56:35,757 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-09 19:56:35,757 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-09 19:56:35,758 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-09 19:56:35,758 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-09 19:56:35,758 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-09 19:56:35,758 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-09 19:56:35,758 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-09 19:56:35,758 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-09 19:56:35,759 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-09 19:56:35,760 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-09 19:56:35,760 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-09 19:56:35,760 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-09 19:56:35,760 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-09 19:56:35,760 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-09 19:56:35,760 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-09 19:56:35,760 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-09 19:56:35,761 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-02-09 19:56:35,761 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-09 19:56:35,761 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=MCR_WITH_DEPRANKS [2022-02-09 19:56:35,761 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-09 19:56:35,969 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-09 19:56:35,994 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-09 19:56:35,997 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-09 19:56:35,998 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-02-09 19:56:35,998 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-02-09 19:56:35,999 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/easy1.wvr.bpl [2022-02-09 19:56:36,000 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/easy1.wvr.bpl' [2022-02-09 19:56:36,024 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-09 19:56:36,026 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-09 19:56:36,027 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-09 19:56:36,027 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-09 19:56:36,028 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-09 19:56:36,040 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "easy1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 07:56:36" (1/1) ... [2022-02-09 19:56:36,051 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "easy1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 07:56:36" (1/1) ... [2022-02-09 19:56:36,057 INFO L137 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-02-09 19:56:36,059 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-09 19:56:36,063 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-09 19:56:36,063 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-09 19:56:36,063 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-09 19:56:36,069 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "easy1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 07:56:36" (1/1) ... [2022-02-09 19:56:36,069 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "easy1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 07:56:36" (1/1) ... [2022-02-09 19:56:36,069 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "easy1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 07:56:36" (1/1) ... [2022-02-09 19:56:36,070 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "easy1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 07:56:36" (1/1) ... [2022-02-09 19:56:36,073 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "easy1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 07:56:36" (1/1) ... [2022-02-09 19:56:36,076 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "easy1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 07:56:36" (1/1) ... [2022-02-09 19:56:36,077 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "easy1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 07:56:36" (1/1) ... [2022-02-09 19:56:36,078 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-09 19:56:36,079 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-09 19:56:36,079 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-09 19:56:36,079 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-09 19:56:36,080 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "easy1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 07:56:36" (1/1) ... [2022-02-09 19:56:36,087 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-09 19:56:36,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 19:56:36,117 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) [2022-02-09 19:56:36,132 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 [2022-02-09 19:56:36,161 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-02-09 19:56:36,161 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-02-09 19:56:36,161 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-02-09 19:56:36,162 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-02-09 19:56:36,162 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-02-09 19:56:36,162 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-02-09 19:56:36,162 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-02-09 19:56:36,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-09 19:56:36,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-09 19:56:36,163 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-02-09 19:56:36,202 INFO L234 CfgBuilder]: Building ICFG [2022-02-09 19:56:36,203 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-09 19:56:36,280 INFO L275 CfgBuilder]: Performing block encoding [2022-02-09 19:56:36,286 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-09 19:56:36,286 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-02-09 19:56:36,292 INFO L202 PluginConnector]: Adding new model easy1.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.02 07:56:36 BoogieIcfgContainer [2022-02-09 19:56:36,293 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-09 19:56:36,297 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-09 19:56:36,297 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-09 19:56:36,304 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-09 19:56:36,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "easy1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 07:56:36" (1/2) ... [2022-02-09 19:56:36,307 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ed81fea and model type easy1.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.02 07:56:36, skipping insertion in model container [2022-02-09 19:56:36,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "easy1.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.02 07:56:36" (2/2) ... [2022-02-09 19:56:36,308 INFO L111 eAbstractionObserver]: Analyzing ICFG easy1.wvr.bpl [2022-02-09 19:56:36,312 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-09 19:56:36,313 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-09 19:56:36,313 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-09 19:56:36,313 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-09 19:56:36,342 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-02-09 19:56:36,385 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-02-09 19:56:36,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 19:56:36,387 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-02-09 19:56:36,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2022-02-09 19:56:36,416 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-09 19:56:36,422 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, 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=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-02-09 19:56:36,422 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-02-09 19:56:36,444 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 24 places, 19 transitions, 54 flow [2022-02-09 19:56:36,474 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 29 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 19:56:36,488 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 45 transitions and produced 42 states. [2022-02-09 19:56:36,490 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 19:56:36,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 19:56:36,495 INFO L85 PathProgramCache]: Analyzing trace with hash -288822697, now seen corresponding path program 1 times [2022-02-09 19:56:36,506 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 19:56:36,507 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969306029] [2022-02-09 19:56:36,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 19:56:36,507 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 19:56:36,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 19:56:37,066 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 19:56:37,067 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 19:56:37,067 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969306029] [2022-02-09 19:56:37,068 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969306029] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 19:56:37,068 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071981026] [2022-02-09 19:56:37,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 19:56:37,068 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 19:56:37,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 19:56:37,092 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 19:56:37,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-09 19:56:37,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 19:56:37,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-09 19:56:37,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 19:56:37,720 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 19:56:37,720 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 19:56:37,946 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 19:56:37,947 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1071981026] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 19:56:37,947 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 19:56:37,947 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 10 [2022-02-09 19:56:37,949 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285062381] [2022-02-09 19:56:37,950 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 19:56:37,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-09 19:56:37,970 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 19:56:38,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-09 19:56:38,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2022-02-09 19:56:38,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-09 19:56:38,024 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-09 19:56:38,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 19:56:38,025 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-09 19:56:38,347 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 86 transitions and produced 69 states. [2022-02-09 19:56:38,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-09 19:56:38,394 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-02-09 19:56:38,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-02-09 19:56:38,568 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 19:56:38,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 19:56:38,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1471242843, now seen corresponding path program 2 times [2022-02-09 19:56:38,569 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 19:56:38,569 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661692348] [2022-02-09 19:56:38,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 19:56:38,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 19:56:38,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 19:56:38,846 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 19:56:38,846 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 19:56:38,846 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661692348] [2022-02-09 19:56:38,847 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661692348] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 19:56:38,847 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1921311045] [2022-02-09 19:56:38,848 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-09 19:56:38,848 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 19:56:38,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 19:56:38,863 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 19:56:38,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-02-09 19:56:38,922 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-09 19:56:38,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 19:56:38,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 15 conjunts are in the unsatisfiable core [2022-02-09 19:56:38,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 19:56:39,093 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 19:56:39,093 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 19:56:39,215 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 19:56:39,215 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1921311045] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 19:56:39,215 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 19:56:39,216 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 13 [2022-02-09 19:56:39,216 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876773942] [2022-02-09 19:56:39,217 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 19:56:39,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-09 19:56:39,219 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 19:56:39,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-09 19:56:39,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2022-02-09 19:56:39,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-09 19:56:39,222 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-09 19:56:39,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 13 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) [2022-02-09 19:56:39,223 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2022-02-09 19:56:39,223 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-09 19:56:39,575 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 94 transitions and produced 79 states. [2022-02-09 19:56:39,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-09 19:56:39,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-09 19:56:39,601 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-02-09 19:56:39,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 19:56:39,792 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 19:56:39,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 19:56:39,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1931323297, now seen corresponding path program 3 times [2022-02-09 19:56:39,793 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 19:56:39,793 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846130298] [2022-02-09 19:56:39,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 19:56:39,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 19:56:39,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 19:56:40,004 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 16 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 19:56:40,005 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 19:56:40,005 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846130298] [2022-02-09 19:56:40,005 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846130298] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 19:56:40,006 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543792557] [2022-02-09 19:56:40,006 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-09 19:56:40,006 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 19:56:40,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 19:56:40,008 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 19:56:40,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-02-09 19:56:40,035 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-09 19:56:40,035 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 19:56:40,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-09 19:56:40,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 19:56:40,359 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-02-09 19:56:40,359 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-09 19:56:40,359 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1543792557] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-09 19:56:40,360 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-02-09 19:56:40,360 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 19 [2022-02-09 19:56:40,361 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154083938] [2022-02-09 19:56:40,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-09 19:56:40,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-09 19:56:40,363 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 19:56:40,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-09 19:56:40,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2022-02-09 19:56:40,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-09 19:56:40,364 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-09 19:56:40,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 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) [2022-02-09 19:56:40,364 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2022-02-09 19:56:40,364 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2022-02-09 19:56:40,364 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-09 19:56:40,619 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 395 transitions and produced 202 states. [2022-02-09 19:56:40,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-09 19:56:40,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-09 19:56:40,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-09 19:56:40,657 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-02-09 19:56:40,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 19:56:40,833 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 19:56:40,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 19:56:40,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1414110639, now seen corresponding path program 1 times [2022-02-09 19:56:40,834 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 19:56:40,835 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619373025] [2022-02-09 19:56:40,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 19:56:40,835 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 19:56:40,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 19:56:40,899 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 19:56:40,900 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 19:56:40,900 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619373025] [2022-02-09 19:56:40,900 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619373025] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 19:56:40,900 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [459554309] [2022-02-09 19:56:40,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 19:56:40,901 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 19:56:40,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 19:56:40,902 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 19:56:40,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-02-09 19:56:40,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 19:56:40,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core [2022-02-09 19:56:40,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 19:56:40,952 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 19:56:40,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 19:56:41,007 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 19:56:41,008 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [459554309] provided 1 perfect and 1 imperfect interpolant sequences [2022-02-09 19:56:41,008 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-02-09 19:56:41,008 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 4 [2022-02-09 19:56:41,008 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703075317] [2022-02-09 19:56:41,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-09 19:56:41,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-09 19:56:41,009 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 19:56:41,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-09 19:56:41,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-09 19:56:41,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-09 19:56:41,010 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-09 19:56:41,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 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) [2022-02-09 19:56:41,010 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2022-02-09 19:56:41,010 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2022-02-09 19:56:41,010 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2022-02-09 19:56:41,010 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-09 19:56:41,045 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 176 transitions and produced 110 states. [2022-02-09 19:56:41,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-09 19:56:41,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-09 19:56:41,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-09 19:56:41,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-09 19:56:41,072 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-02-09 19:56:41,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 19:56:41,260 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 19:56:41,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 19:56:41,260 INFO L85 PathProgramCache]: Analyzing trace with hash 618653907, now seen corresponding path program 1 times [2022-02-09 19:56:41,261 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 19:56:41,261 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748401287] [2022-02-09 19:56:41,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 19:56:41,261 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 19:56:41,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 19:56:41,303 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-09 19:56:41,303 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 19:56:41,303 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748401287] [2022-02-09 19:56:41,303 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748401287] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-09 19:56:41,304 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-09 19:56:41,304 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-09 19:56:41,304 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397480103] [2022-02-09 19:56:41,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-09 19:56:41,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-09 19:56:41,304 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 19:56:41,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-09 19:56:41,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-09 19:56:41,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-09 19:56:41,309 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-09 19:56:41,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 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) [2022-02-09 19:56:41,309 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2022-02-09 19:56:41,309 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2022-02-09 19:56:41,309 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2022-02-09 19:56:41,309 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-02-09 19:56:41,309 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-09 19:56:41,370 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 103 transitions and produced 53 states. [2022-02-09 19:56:41,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-09 19:56:41,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-09 19:56:41,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-09 19:56:41,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-09 19:56:41,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-09 19:56:41,377 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (2 of 3 remaining) [2022-02-09 19:56:41,378 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-02-09 19:56:41,378 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-02-09 19:56:41,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-02-09 19:56:41,393 INFO L732 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2022-02-09 19:56:41,395 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-02-09 19:56:41,395 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-09 19:56:41,404 INFO L202 PluginConnector]: Adding new model easy1.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.02 07:56:41 BasicIcfg [2022-02-09 19:56:41,404 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-09 19:56:41,407 INFO L158 Benchmark]: Toolchain (without parser) took 5378.50ms. Allocated memory was 167.8MB in the beginning and 206.6MB in the end (delta: 38.8MB). Free memory was 131.7MB in the beginning and 164.6MB in the end (delta: -32.8MB). Peak memory consumption was 6.4MB. Max. memory is 8.0GB. [2022-02-09 19:56:41,407 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.12ms. Allocated memory is still 167.8MB. Free memory was 132.8MB in the beginning and 132.7MB in the end (delta: 73.5kB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-09 19:56:41,408 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.78ms. Allocated memory is still 167.8MB. Free memory was 131.7MB in the beginning and 130.2MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-09 19:56:41,408 INFO L158 Benchmark]: Boogie Preprocessor took 15.36ms. Allocated memory is still 167.8MB. Free memory was 130.2MB in the beginning and 129.2MB in the end (delta: 904.5kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-09 19:56:41,408 INFO L158 Benchmark]: RCFGBuilder took 214.86ms. Allocated memory is still 167.8MB. Free memory was 129.2MB in the beginning and 120.7MB in the end (delta: 8.5MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2022-02-09 19:56:41,409 INFO L158 Benchmark]: TraceAbstraction took 5106.79ms. Allocated memory was 167.8MB in the beginning and 206.6MB in the end (delta: 38.8MB). Free memory was 120.1MB in the beginning and 164.6MB in the end (delta: -44.4MB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-09 19:56:41,410 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 0.12ms. Allocated memory is still 167.8MB. Free memory was 132.8MB in the beginning and 132.7MB in the end (delta: 73.5kB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 31.78ms. Allocated memory is still 167.8MB. Free memory was 131.7MB in the beginning and 130.2MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 15.36ms. Allocated memory is still 167.8MB. Free memory was 130.2MB in the beginning and 129.2MB in the end (delta: 904.5kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 214.86ms. Allocated memory is still 167.8MB. Free memory was 129.2MB in the beginning and 120.7MB in the end (delta: 8.5MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * TraceAbstraction took 5106.79ms. Allocated memory was 167.8MB in the beginning and 206.6MB in the end (delta: 38.8MB). Free memory was 120.1MB in the beginning and 164.6MB in the end (delta: -44.4MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1, Independence queries for same thread: 0 - 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: 37]: 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, 28 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 5.0s, OverallIterations: 5, TraceHistogramMax: 0, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 1.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=0, InterpolantAutomatonStates: 49, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 179 NumberOfCodeBlocks, 171 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 222 ConstructedInterpolants, 0 QuantifiedInterpolants, 1489 SizeOfPredicates, 7 NumberOfNonLiveVariables, 137 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 12 InterpolantComputations, 3 PerfectInterpolantSequences, 66/149 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-02-09 19:56:41,450 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Forceful destruction successful, exit code 0 [2022-02-09 19:56:41,664 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...