/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/parallel/misc-3.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-44898dd [2022-02-15 13:44:04,938 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-15 13:44:04,939 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-15 13:44:04,997 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-15 13:44:05,032 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 [2022-02-15 13:44:05,058 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-15 13:44:05,058 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-15 13:44:05,059 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-15 13:44:05,059 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-15 13:44:05,059 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-15 13:44:05,060 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-15 13:44:05,060 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-15 13:44:05,060 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-15 13:44:05,060 INFO L138 SettingsManager]: * Use SBE=true [2022-02-15 13:44:05,060 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-15 13:44:05,061 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-15 13:44:05,061 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-15 13:44:05,061 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-15 13:44:05,061 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-15 13:44:05,061 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-15 13:44:05,061 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-15 13:44:05,061 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-15 13:44:05,062 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-15 13:44:05,062 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-15 13:44:05,062 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-15 13:44:05,062 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-15 13:44:05,062 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-15 13:44:05,062 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-15 13:44:05,062 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-15 13:44:05,063 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-15 13:44:05,063 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-15 13:44:05,063 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-15 13:44:05,063 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-15 13:44:05,064 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-15 13:44:05,064 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-15 13:44:05,064 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-15 13:44:05,064 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-15 13:44:05,064 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-15 13:44:05,064 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-15 13:44:05,224 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-15 13:44:05,240 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-15 13:44:05,242 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-15 13:44:05,242 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-02-15 13:44:05,243 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-02-15 13:44:05,244 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-3.wvr.bpl [2022-02-15 13:44:05,244 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-3.wvr.bpl' [2022-02-15 13:44:05,259 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-15 13:44:05,260 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-15 13:44:05,265 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-15 13:44:05,266 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-15 13:44:05,266 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-15 13:44:05,275 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "misc-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.02 01:44:05" (1/1) ... [2022-02-15 13:44:05,281 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "misc-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.02 01:44:05" (1/1) ... [2022-02-15 13:44:05,285 INFO L137 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-02-15 13:44:05,286 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-15 13:44:05,287 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-15 13:44:05,287 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-15 13:44:05,287 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-15 13:44:05,292 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "misc-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.02 01:44:05" (1/1) ... [2022-02-15 13:44:05,292 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "misc-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.02 01:44:05" (1/1) ... [2022-02-15 13:44:05,293 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "misc-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.02 01:44:05" (1/1) ... [2022-02-15 13:44:05,293 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "misc-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.02 01:44:05" (1/1) ... [2022-02-15 13:44:05,295 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "misc-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.02 01:44:05" (1/1) ... [2022-02-15 13:44:05,297 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "misc-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.02 01:44:05" (1/1) ... [2022-02-15 13:44:05,297 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "misc-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.02 01:44:05" (1/1) ... [2022-02-15 13:44:05,297 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-15 13:44:05,298 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-15 13:44:05,298 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-15 13:44:05,298 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-15 13:44:05,299 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "misc-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.02 01:44:05" (1/1) ... [2022-02-15 13:44:05,303 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-15 13:44:05,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:44:05,329 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) [2022-02-15 13:44:05,336 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 [2022-02-15 13:44:05,362 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-02-15 13:44:05,363 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-02-15 13:44:05,363 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-02-15 13:44:05,363 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-02-15 13:44:05,363 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-02-15 13:44:05,363 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-02-15 13:44:05,363 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-02-15 13:44:05,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-15 13:44:05,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-15 13:44:05,364 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-02-15 13:44:05,395 INFO L234 CfgBuilder]: Building ICFG [2022-02-15 13:44:05,396 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-15 13:44:05,536 INFO L275 CfgBuilder]: Performing block encoding [2022-02-15 13:44:05,541 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-15 13:44:05,541 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-02-15 13:44:05,542 INFO L202 PluginConnector]: Adding new model misc-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 01:44:05 BoogieIcfgContainer [2022-02-15 13:44:05,542 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-15 13:44:05,543 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-15 13:44:05,543 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-15 13:44:05,561 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-15 13:44:05,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "misc-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.02 01:44:05" (1/2) ... [2022-02-15 13:44:05,562 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d2aba67 and model type misc-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 01:44:05, skipping insertion in model container [2022-02-15 13:44:05,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "misc-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 01:44:05" (2/2) ... [2022-02-15 13:44:05,563 INFO L111 eAbstractionObserver]: Analyzing ICFG misc-3.wvr.bpl [2022-02-15 13:44:05,567 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-15 13:44:05,567 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-15 13:44:05,567 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-15 13:44:05,567 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-15 13:44:05,594 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-02-15 13:44:05,621 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-15 13:44:05,626 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 [2022-02-15 13:44:05,626 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-02-15 13:44:05,632 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 34 places, 35 transitions, 86 flow [2022-02-15 13:44:05,669 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 104 states, 103 states have (on average 2.5533980582524274) internal successors, (263), 103 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:05,671 INFO L276 IsEmpty]: Start isEmpty. Operand has 104 states, 103 states have (on average 2.5533980582524274) internal successors, (263), 103 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:05,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-02-15 13:44:05,676 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:44:05,677 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:44:05,677 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:44:05,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:44:05,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1627835889, now seen corresponding path program 1 times [2022-02-15 13:44:05,693 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:44:05,693 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082544193] [2022-02-15 13:44:05,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:44:05,694 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:44:05,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:44:05,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:44:05,776 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:44:05,776 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082544193] [2022-02-15 13:44:05,777 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082544193] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:44:05,777 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:44:05,777 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-02-15 13:44:05,778 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918569019] [2022-02-15 13:44:05,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:44:05,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-15 13:44:05,782 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:44:05,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-15 13:44:05,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-15 13:44:05,809 INFO L87 Difference]: Start difference. First operand has 104 states, 103 states have (on average 2.5533980582524274) internal successors, (263), 103 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:05,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:44:05,839 INFO L93 Difference]: Finished difference Result 114 states and 286 transitions. [2022-02-15 13:44:05,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-15 13:44:05,841 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-02-15 13:44:05,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:44:05,850 INFO L225 Difference]: With dead ends: 114 [2022-02-15 13:44:05,850 INFO L226 Difference]: Without dead ends: 114 [2022-02-15 13:44:05,852 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-15 13:44:05,855 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 22 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 13:44:05,856 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 41 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 13:44:05,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2022-02-15 13:44:05,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2022-02-15 13:44:05,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 113 states have (on average 2.5309734513274336) internal successors, (286), 113 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:05,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 286 transitions. [2022-02-15 13:44:05,895 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 286 transitions. Word has length 11 [2022-02-15 13:44:05,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:44:05,895 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 286 transitions. [2022-02-15 13:44:05,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:05,895 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 286 transitions. [2022-02-15 13:44:05,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-15 13:44:05,896 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:44:05,896 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:44:05,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-15 13:44:05,897 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:44:05,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:44:05,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1729060554, now seen corresponding path program 1 times [2022-02-15 13:44:05,898 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:44:05,898 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056131528] [2022-02-15 13:44:05,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:44:05,898 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:44:05,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:44:05,922 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:44:05,922 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:44:05,923 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056131528] [2022-02-15 13:44:05,923 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056131528] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:44:05,923 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:44:05,923 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-02-15 13:44:05,923 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583928870] [2022-02-15 13:44:05,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:44:05,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-15 13:44:05,924 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:44:05,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-15 13:44:05,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-15 13:44:05,925 INFO L87 Difference]: Start difference. First operand 114 states and 286 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:05,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:44:05,940 INFO L93 Difference]: Finished difference Result 125 states and 311 transitions. [2022-02-15 13:44:05,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-15 13:44:05,941 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-02-15 13:44:05,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:44:05,943 INFO L225 Difference]: With dead ends: 125 [2022-02-15 13:44:05,943 INFO L226 Difference]: Without dead ends: 125 [2022-02-15 13:44:05,943 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-15 13:44:05,944 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 18 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 13:44:05,945 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 41 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 13:44:05,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2022-02-15 13:44:05,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2022-02-15 13:44:05,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 124 states have (on average 2.5080645161290325) internal successors, (311), 124 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:05,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 311 transitions. [2022-02-15 13:44:05,955 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 311 transitions. Word has length 17 [2022-02-15 13:44:05,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:44:05,955 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 311 transitions. [2022-02-15 13:44:05,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:05,955 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 311 transitions. [2022-02-15 13:44:05,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-15 13:44:05,956 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:44:05,956 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:44:05,956 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-15 13:44:05,957 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:44:05,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:44:05,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1641180913, now seen corresponding path program 1 times [2022-02-15 13:44:05,957 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:44:05,957 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333299480] [2022-02-15 13:44:05,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:44:05,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:44:05,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:44:05,988 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:44:05,989 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:44:05,989 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333299480] [2022-02-15 13:44:05,989 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333299480] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:44:05,989 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:44:05,989 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-15 13:44:05,989 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100307443] [2022-02-15 13:44:05,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:44:05,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 13:44:05,990 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:44:05,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 13:44:05,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 13:44:05,991 INFO L87 Difference]: Start difference. First operand 125 states and 311 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:06,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:44:06,020 INFO L93 Difference]: Finished difference Result 169 states and 389 transitions. [2022-02-15 13:44:06,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 13:44:06,021 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-02-15 13:44:06,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:44:06,023 INFO L225 Difference]: With dead ends: 169 [2022-02-15 13:44:06,023 INFO L226 Difference]: Without dead ends: 169 [2022-02-15 13:44:06,024 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 13:44:06,025 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 35 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 13:44:06,025 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 69 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 13:44:06,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2022-02-15 13:44:06,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2022-02-15 13:44:06,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 168 states have (on average 2.3154761904761907) internal successors, (389), 168 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:06,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 389 transitions. [2022-02-15 13:44:06,038 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 389 transitions. Word has length 23 [2022-02-15 13:44:06,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:44:06,038 INFO L470 AbstractCegarLoop]: Abstraction has 169 states and 389 transitions. [2022-02-15 13:44:06,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:06,038 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 389 transitions. [2022-02-15 13:44:06,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-15 13:44:06,040 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:44:06,040 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:44:06,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-15 13:44:06,040 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:44:06,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:44:06,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1003757710, now seen corresponding path program 1 times [2022-02-15 13:44:06,041 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:44:06,041 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067883225] [2022-02-15 13:44:06,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:44:06,042 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:44:06,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:44:06,066 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-02-15 13:44:06,066 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:44:06,066 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067883225] [2022-02-15 13:44:06,066 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067883225] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:44:06,066 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:44:06,067 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-15 13:44:06,067 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404268667] [2022-02-15 13:44:06,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:44:06,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 13:44:06,067 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:44:06,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 13:44:06,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 13:44:06,068 INFO L87 Difference]: Start difference. First operand 169 states and 389 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 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) [2022-02-15 13:44:06,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:44:06,134 INFO L93 Difference]: Finished difference Result 229 states and 483 transitions. [2022-02-15 13:44:06,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 13:44:06,135 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 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) Word has length 28 [2022-02-15 13:44:06,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:44:06,137 INFO L225 Difference]: With dead ends: 229 [2022-02-15 13:44:06,137 INFO L226 Difference]: Without dead ends: 229 [2022-02-15 13:44:06,137 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 13:44:06,145 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 26 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:44:06,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 69 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:44:06,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2022-02-15 13:44:06,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2022-02-15 13:44:06,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 228 states have (on average 2.1184210526315788) internal successors, (483), 228 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:06,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 483 transitions. [2022-02-15 13:44:06,158 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 483 transitions. Word has length 28 [2022-02-15 13:44:06,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:44:06,158 INFO L470 AbstractCegarLoop]: Abstraction has 229 states and 483 transitions. [2022-02-15 13:44:06,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 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) [2022-02-15 13:44:06,158 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 483 transitions. [2022-02-15 13:44:06,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-15 13:44:06,159 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:44:06,160 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:44:06,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-02-15 13:44:06,160 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:44:06,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:44:06,160 INFO L85 PathProgramCache]: Analyzing trace with hash -99320673, now seen corresponding path program 1 times [2022-02-15 13:44:06,160 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:44:06,161 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158018043] [2022-02-15 13:44:06,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:44:06,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:44:06,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:44:06,257 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 13:44:06,257 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:44:06,257 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158018043] [2022-02-15 13:44:06,258 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158018043] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:44:06,258 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119964916] [2022-02-15 13:44:06,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:44:06,258 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:44:06,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:44:06,260 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-15 13:44:06,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-02-15 13:44:06,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:44:06,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-15 13:44:06,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:44:06,556 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 13:44:06,557 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:44:06,706 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 13:44:06,706 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [119964916] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:44:06,706 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:44:06,707 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2022-02-15 13:44:06,707 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308269794] [2022-02-15 13:44:06,707 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:44:06,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-15 13:44:06,708 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:44:06,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-15 13:44:06,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-15 13:44:06,709 INFO L87 Difference]: Start difference. First operand 229 states and 483 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 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) [2022-02-15 13:44:06,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:44:06,752 INFO L93 Difference]: Finished difference Result 398 states and 844 transitions. [2022-02-15 13:44:06,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-15 13:44:06,752 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 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) Word has length 33 [2022-02-15 13:44:06,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:44:06,754 INFO L225 Difference]: With dead ends: 398 [2022-02-15 13:44:06,754 INFO L226 Difference]: Without dead ends: 355 [2022-02-15 13:44:06,756 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 64 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-15 13:44:06,757 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 15 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 13:44:06,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 154 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 13:44:06,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2022-02-15 13:44:06,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 335. [2022-02-15 13:44:06,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 334 states have (on average 2.1497005988023954) internal successors, (718), 334 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:06,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 718 transitions. [2022-02-15 13:44:06,777 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 718 transitions. Word has length 33 [2022-02-15 13:44:06,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:44:06,777 INFO L470 AbstractCegarLoop]: Abstraction has 335 states and 718 transitions. [2022-02-15 13:44:06,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 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) [2022-02-15 13:44:06,777 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 718 transitions. [2022-02-15 13:44:06,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-15 13:44:06,779 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:44:06,779 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:44:06,797 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-02-15 13:44:06,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:44:06,993 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 13:44:06,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:44:06,994 INFO L85 PathProgramCache]: Analyzing trace with hash -773796625, now seen corresponding path program 2 times [2022-02-15 13:44:06,994 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:44:06,994 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530406797] [2022-02-15 13:44:06,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:44:06,994 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:44:07,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:44:07,070 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-15 13:44:07,071 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:44:07,071 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530406797] [2022-02-15 13:44:07,071 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530406797] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 13:44:07,071 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614462912] [2022-02-15 13:44:07,071 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-15 13:44:07,071 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 13:44:07,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:44:07,072 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) [2022-02-15 13:44:07,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-15 13:44:07,095 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-15 13:44:07,095 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 13:44:07,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-15 13:44:07,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 13:44:07,227 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-15 13:44:07,228 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 13:44:07,347 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-15 13:44:07,347 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1614462912] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 13:44:07,347 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 13:44:07,347 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2022-02-15 13:44:07,347 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923230744] [2022-02-15 13:44:07,348 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 13:44:07,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-15 13:44:07,348 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:44:07,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-15 13:44:07,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-02-15 13:44:07,349 INFO L87 Difference]: Start difference. First operand 335 states and 718 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 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) [2022-02-15 13:44:07,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:44:07,379 INFO L93 Difference]: Finished difference Result 333 states and 716 transitions. [2022-02-15 13:44:07,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-15 13:44:07,379 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 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) Word has length 33 [2022-02-15 13:44:07,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:44:07,380 INFO L225 Difference]: With dead ends: 333 [2022-02-15 13:44:07,380 INFO L226 Difference]: Without dead ends: 0 [2022-02-15 13:44:07,382 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 63 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-02-15 13:44:07,383 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 28 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 13:44:07,384 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 193 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 13:44:07,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-02-15 13:44:07,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-02-15 13:44:07,384 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) [2022-02-15 13:44:07,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-02-15 13:44:07,385 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2022-02-15 13:44:07,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:44:07,385 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-02-15 13:44:07,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 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) [2022-02-15 13:44:07,385 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-02-15 13:44:07,385 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-15 13:44:07,387 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (2 of 3 remaining) [2022-02-15 13:44:07,387 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-02-15 13:44:07,387 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-02-15 13:44:07,406 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-02-15 13:44:07,595 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,SelfDestructingSolverStorable5 [2022-02-15 13:44:07,598 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2022-02-15 13:44:07,599 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-02-15 13:44:07,599 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-15 13:44:07,601 INFO L202 PluginConnector]: Adding new model misc-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.02 01:44:07 BasicIcfg [2022-02-15 13:44:07,601 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-15 13:44:07,601 INFO L158 Benchmark]: Toolchain (without parser) took 2341.54ms. Allocated memory was 185.6MB in the beginning and 241.2MB in the end (delta: 55.6MB). Free memory was 145.3MB in the beginning and 117.1MB in the end (delta: 28.3MB). Peak memory consumption was 84.4MB. Max. memory is 8.0GB. [2022-02-15 13:44:07,602 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.10ms. Allocated memory is still 185.6MB. Free memory was 146.5MB in the beginning and 146.4MB in the end (delta: 126.1kB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-15 13:44:07,602 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.16ms. Allocated memory is still 185.6MB. Free memory was 145.3MB in the beginning and 143.8MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-15 13:44:07,602 INFO L158 Benchmark]: Boogie Preprocessor took 10.38ms. Allocated memory is still 185.6MB. Free memory was 143.8MB in the beginning and 142.9MB in the end (delta: 946.4kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-15 13:44:07,602 INFO L158 Benchmark]: RCFGBuilder took 244.14ms. Allocated memory is still 185.6MB. Free memory was 142.7MB in the beginning and 134.2MB in the end (delta: 8.6MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-02-15 13:44:07,603 INFO L158 Benchmark]: TraceAbstraction took 2057.86ms. Allocated memory was 185.6MB in the beginning and 241.2MB in the end (delta: 55.6MB). Free memory was 133.6MB in the beginning and 117.1MB in the end (delta: 16.6MB). Peak memory consumption was 72.8MB. Max. memory is 8.0GB. [2022-02-15 13:44:07,603 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 0.10ms. Allocated memory is still 185.6MB. Free memory was 146.5MB in the beginning and 146.4MB in the end (delta: 126.1kB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 21.16ms. Allocated memory is still 185.6MB. Free memory was 145.3MB in the beginning and 143.8MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 10.38ms. Allocated memory is still 185.6MB. Free memory was 143.8MB in the beginning and 142.9MB in the end (delta: 946.4kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 244.14ms. Allocated memory is still 185.6MB. Free memory was 142.7MB in the beginning and 134.2MB in the end (delta: 8.6MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * TraceAbstraction took 2057.86ms. Allocated memory was 185.6MB in the beginning and 241.2MB in the end (delta: 55.6MB). Free memory was 133.6MB in the beginning and 117.1MB in the end (delta: 16.6MB). Peak memory consumption was 72.8MB. 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: 72]: 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, 48 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 2.0s, OverallIterations: 6, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 144 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 144 mSDsluCounter, 567 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 396 mSDsCounter, 14 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 174 IncrementalHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 14 mSolverCounterUnsat, 219 mSDtfsCounter, 174 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 150 GetRequests, 131 SyntacticMatches, 6 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=335occurred in iteration=5, InterpolantAutomatonStates: 25, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 20 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 211 NumberOfCodeBlocks, 211 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 267 ConstructedInterpolants, 0 QuantifiedInterpolants, 1385 SizeOfPredicates, 2 NumberOfNonLiveVariables, 104 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 10 InterpolantComputations, 4 PerfectInterpolantSequences, 19/82 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! [2022-02-15 13:44:07,631 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...