/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/container-symm.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-4b0ab11 [2022-03-03 19:00:22,250 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-03 19:00:22,251 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-03 19:00:22,297 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-03 19:00:22,355 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2022-03-03 19:00:22,373 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-03 19:00:22,373 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-03 19:00:22,374 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-03 19:00:22,374 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-03 19:00:22,374 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-03 19:00:22,374 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-03 19:00:22,375 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-03 19:00:22,375 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-03 19:00:22,375 INFO L138 SettingsManager]: * Use SBE=true [2022-03-03 19:00:22,375 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-03 19:00:22,375 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-03 19:00:22,375 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-03 19:00:22,375 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-03 19:00:22,375 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-03 19:00:22,375 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-03 19:00:22,375 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-03 19:00:22,376 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-03 19:00:22,376 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-03 19:00:22,376 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-03 19:00:22,376 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-03 19:00:22,376 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-03 19:00:22,376 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-03 19:00:22,376 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-03 19:00:22,376 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-03 19:00:22,376 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-03 19:00:22,376 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-03 19:00:22,376 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-03 19:00:22,376 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-03 19:00:22,377 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-03 19:00:22,377 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-03 19:00:22,377 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-03 19:00:22,377 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-03 19:00:22,377 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-03 19:00:22,377 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-03 19:00:22,561 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-03 19:00:22,578 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-03 19:00:22,580 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-03 19:00:22,580 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-03-03 19:00:22,583 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-03-03 19:00:22,583 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/container-symm.wvr.bpl [2022-03-03 19:00:22,584 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/container-symm.wvr.bpl' [2022-03-03 19:00:22,605 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-03 19:00:22,606 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-03 19:00:22,606 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-03 19:00:22,607 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-03 19:00:22,607 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-03 19:00:22,614 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "container-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 07:00:22" (1/1) ... [2022-03-03 19:00:22,619 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "container-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 07:00:22" (1/1) ... [2022-03-03 19:00:22,623 INFO L137 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-03-03 19:00:22,624 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-03 19:00:22,625 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-03 19:00:22,625 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-03 19:00:22,625 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-03 19:00:22,630 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "container-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 07:00:22" (1/1) ... [2022-03-03 19:00:22,630 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "container-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 07:00:22" (1/1) ... [2022-03-03 19:00:22,630 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "container-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 07:00:22" (1/1) ... [2022-03-03 19:00:22,630 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "container-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 07:00:22" (1/1) ... [2022-03-03 19:00:22,632 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "container-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 07:00:22" (1/1) ... [2022-03-03 19:00:22,632 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "container-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 07:00:22" (1/1) ... [2022-03-03 19:00:22,633 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "container-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 07:00:22" (1/1) ... [2022-03-03 19:00:22,633 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-03 19:00:22,634 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-03 19:00:22,634 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-03 19:00:22,634 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-03 19:00:22,635 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "container-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 07:00:22" (1/1) ... [2022-03-03 19:00:22,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-03 19:00:22,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:00:22,657 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) [2022-03-03 19:00:22,673 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 [2022-03-03 19:00:22,686 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-03-03 19:00:22,686 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-03 19:00:22,686 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-03 19:00:22,686 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-03-03 19:00:22,686 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-03 19:00:22,686 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-03 19:00:22,686 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-03-03 19:00:22,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-03 19:00:22,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-03 19:00:22,687 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-03 19:00:22,720 INFO L234 CfgBuilder]: Building ICFG [2022-03-03 19:00:22,721 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-03 19:00:22,777 INFO L275 CfgBuilder]: Performing block encoding [2022-03-03 19:00:22,807 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-03 19:00:22,807 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-03-03 19:00:22,808 INFO L202 PluginConnector]: Adding new model container-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.03 07:00:22 BoogieIcfgContainer [2022-03-03 19:00:22,808 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-03 19:00:22,810 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-03 19:00:22,810 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-03 19:00:22,817 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-03 19:00:22,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "container-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 07:00:22" (1/2) ... [2022-03-03 19:00:22,818 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40762712 and model type container-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 07:00:22, skipping insertion in model container [2022-03-03 19:00:22,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "container-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.03 07:00:22" (2/2) ... [2022-03-03 19:00:22,819 INFO L111 eAbstractionObserver]: Analyzing ICFG container-symm.wvr.bpl [2022-03-03 19:00:22,822 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-03 19:00:22,822 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-03 19:00:22,822 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-03 19:00:22,822 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-03 19:00:22,851 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-03-03 19:00:22,878 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-03 19:00:22,883 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=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=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-03-03 19:00:22,883 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-03-03 19:00:22,888 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 21 places, 14 transitions, 44 flow [2022-03-03 19:00:22,901 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 19 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:00:22,903 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:00:22,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-03-03 19:00:22,910 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:00:22,910 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:00:22,911 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:00:22,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:00:22,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1215215939, now seen corresponding path program 1 times [2022-03-03 19:00:22,932 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:00:22,932 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862888521] [2022-03-03 19:00:22,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:00:22,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:00:23,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:00:23,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:00:23,582 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:00:23,582 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862888521] [2022-03-03 19:00:23,583 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862888521] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:00:23,583 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:00:23,583 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-03 19:00:23,584 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717877600] [2022-03-03 19:00:23,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:00:23,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-03 19:00:23,588 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:00:23,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-03 19:00:23,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-03 19:00:23,648 INFO L87 Difference]: Start difference. First operand has 19 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:00:23,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:00:23,730 INFO L93 Difference]: Finished difference Result 26 states and 34 transitions. [2022-03-03 19:00:23,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-03 19:00:23,732 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have 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 [2022-03-03 19:00:23,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:00:23,737 INFO L225 Difference]: With dead ends: 26 [2022-03-03 19:00:23,737 INFO L226 Difference]: Without dead ends: 14 [2022-03-03 19:00:23,738 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-03 19:00:23,742 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 9 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 19:00:23,743 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 10 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 19:00:23,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-03-03 19:00:23,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-03-03 19:00:23,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:00:23,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2022-03-03 19:00:23,761 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 10 [2022-03-03 19:00:23,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:00:23,762 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2022-03-03 19:00:23,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:00:23,763 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2022-03-03 19:00:23,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-03-03 19:00:23,764 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:00:23,764 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:00:23,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-03 19:00:23,764 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 19:00:23,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:00:23,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1185872579, now seen corresponding path program 2 times [2022-03-03 19:00:23,765 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:00:23,765 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564233944] [2022-03-03 19:00:23,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:00:23,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:00:23,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:00:24,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:00:24,218 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:00:24,219 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564233944] [2022-03-03 19:00:24,219 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564233944] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:00:24,219 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:00:24,219 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-03 19:00:24,219 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581766098] [2022-03-03 19:00:24,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:00:24,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-03 19:00:24,221 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:00:24,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-03 19:00:24,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-03 19:00:24,222 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:00:24,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:00:24,276 INFO L93 Difference]: Finished difference Result 12 states and 14 transitions. [2022-03-03 19:00:24,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-03 19:00:24,276 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have 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 [2022-03-03 19:00:24,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:00:24,276 INFO L225 Difference]: With dead ends: 12 [2022-03-03 19:00:24,277 INFO L226 Difference]: Without dead ends: 0 [2022-03-03 19:00:24,279 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-03 19:00:24,280 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 5 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 19:00:24,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 4 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 19:00:24,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-03 19:00:24,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-03 19:00:24,283 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) [2022-03-03 19:00:24,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-03 19:00:24,284 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2022-03-03 19:00:24,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:00:24,284 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-03 19:00:24,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:00:24,285 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-03 19:00:24,285 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-03 19:00:24,287 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (2 of 3 remaining) [2022-03-03 19:00:24,288 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-03-03 19:00:24,288 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-03-03 19:00:24,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-03 19:00:24,291 INFO L732 BasicCegarLoop]: Path program histogram: [2] [2022-03-03 19:00:24,292 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-03 19:00:24,292 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-03 19:00:24,298 INFO L202 PluginConnector]: Adding new model container-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.03 07:00:24 BasicIcfg [2022-03-03 19:00:24,299 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-03 19:00:24,299 INFO L158 Benchmark]: Toolchain (without parser) took 1693.09ms. Allocated memory was 202.4MB in the beginning and 321.9MB in the end (delta: 119.5MB). Free memory was 161.0MB in the beginning and 166.6MB in the end (delta: -5.6MB). Peak memory consumption was 113.4MB. Max. memory is 8.0GB. [2022-03-03 19:00:24,299 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.11ms. Allocated memory is still 202.4MB. Free memory is still 162.1MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-03 19:00:24,300 INFO L158 Benchmark]: Boogie Procedure Inliner took 17.60ms. Allocated memory is still 202.4MB. Free memory was 160.9MB in the beginning and 159.4MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-03 19:00:24,300 INFO L158 Benchmark]: Boogie Preprocessor took 8.79ms. Allocated memory is still 202.4MB. Free memory was 159.4MB in the beginning and 158.5MB in the end (delta: 940.3kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-03 19:00:24,301 INFO L158 Benchmark]: RCFGBuilder took 174.51ms. Allocated memory is still 202.4MB. Free memory was 158.5MB in the beginning and 148.5MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-03-03 19:00:24,301 INFO L158 Benchmark]: TraceAbstraction took 1488.92ms. Allocated memory was 202.4MB in the beginning and 321.9MB in the end (delta: 119.5MB). Free memory was 148.1MB in the beginning and 166.6MB in the end (delta: -18.5MB). Peak memory consumption was 100.8MB. Max. memory is 8.0GB. [2022-03-03 19:00:24,304 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 0.11ms. Allocated memory is still 202.4MB. Free memory is still 162.1MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 17.60ms. Allocated memory is still 202.4MB. Free memory was 160.9MB in the beginning and 159.4MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 8.79ms. Allocated memory is still 202.4MB. Free memory was 159.4MB in the beginning and 158.5MB in the end (delta: 940.3kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 174.51ms. Allocated memory is still 202.4MB. Free memory was 158.5MB in the beginning and 148.5MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 1488.92ms. Allocated memory was 202.4MB in the beginning and 321.9MB in the end (delta: 119.5MB). Free memory was 148.1MB in the beginning and 166.6MB in the end (delta: -18.5MB). Peak memory consumption was 100.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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: 50]: 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, 23 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 1.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 14 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 14 mSDsluCounter, 14 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 17 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 32 IncrementalHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 8 mSDtfsCounter, 32 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, InterpolantAutomatonStates: 8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 627 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 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! [2022-03-03 19:00:24,334 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...