/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/mcr/example_6.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-c7b2d19 [2022-03-15 20:41:26,271 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-15 20:41:26,272 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-15 20:41:26,307 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-15 20:41:26,324 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-15 20:41:26,325 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-15 20:41:26,325 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-15 20:41:26,326 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-15 20:41:26,326 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-15 20:41:26,327 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-15 20:41:26,328 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-15 20:41:26,329 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-15 20:41:26,329 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-15 20:41:26,332 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-15 20:41:26,334 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-15 20:41:26,336 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-15 20:41:26,340 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-15 20:41:26,347 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-15 20:41:26,347 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-15 20:41:26,348 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-15 20:41:26,348 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2022-03-15 20:41:26,375 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-15 20:41:26,375 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-15 20:41:26,376 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-15 20:41:26,376 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-15 20:41:26,376 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-15 20:41:26,376 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-15 20:41:26,376 INFO L138 SettingsManager]: * Use SBE=true [2022-03-15 20:41:26,377 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-15 20:41:26,377 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-15 20:41:26,377 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-15 20:41:26,377 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-15 20:41:26,377 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-15 20:41:26,377 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-15 20:41:26,378 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-15 20:41:26,378 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-15 20:41:26,378 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-15 20:41:26,378 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-15 20:41:26,378 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-15 20:41:26,378 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-15 20:41:26,378 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-15 20:41:26,378 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-15 20:41:26,378 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-15 20:41:26,378 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-15 20:41:26,378 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 20:41:26,379 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-15 20:41:26,379 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-15 20:41:26,379 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-15 20:41:26,379 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-15 20:41:26,379 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-15 20:41:26,379 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2022-03-15 20:41:26,379 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2022-03-15 20:41:26,379 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-15 20:41:26,379 INFO L138 SettingsManager]: * Interpolant automaton=MCR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-15 20:41:26,564 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-15 20:41:26,580 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-15 20:41:26,581 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-15 20:41:26,582 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-03-15 20:41:26,583 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-03-15 20:41:26,584 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_6.bpl [2022-03-15 20:41:26,584 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_6.bpl' [2022-03-15 20:41:26,601 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-15 20:41:26,602 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-15 20:41:26,603 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-15 20:41:26,603 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-15 20:41:26,603 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-15 20:41:26,611 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:41:26" (1/1) ... [2022-03-15 20:41:26,616 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:41:26" (1/1) ... [2022-03-15 20:41:26,620 INFO L137 Inliner]: procedures = 7, calls = 6, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-03-15 20:41:26,621 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-15 20:41:26,621 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-15 20:41:26,622 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-15 20:41:26,622 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-15 20:41:26,626 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:41:26" (1/1) ... [2022-03-15 20:41:26,627 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:41:26" (1/1) ... [2022-03-15 20:41:26,627 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:41:26" (1/1) ... [2022-03-15 20:41:26,627 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:41:26" (1/1) ... [2022-03-15 20:41:26,629 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:41:26" (1/1) ... [2022-03-15 20:41:26,630 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:41:26" (1/1) ... [2022-03-15 20:41:26,630 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:41:26" (1/1) ... [2022-03-15 20:41:26,632 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-15 20:41:26,633 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-15 20:41:26,634 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-15 20:41:26,634 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-15 20:41:26,635 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:41:26" (1/1) ... [2022-03-15 20:41:26,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 20:41:26,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 20:41:26,669 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-15 20:41:26,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-15 20:41:26,697 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2022-03-15 20:41:26,697 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2022-03-15 20:41:26,698 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2022-03-15 20:41:26,698 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2022-03-15 20:41:26,698 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2022-03-15 20:41:26,698 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2022-03-15 20:41:26,698 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2022-03-15 20:41:26,698 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2022-03-15 20:41:26,698 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2022-03-15 20:41:26,698 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2022-03-15 20:41:26,698 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2022-03-15 20:41:26,698 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2022-03-15 20:41:26,698 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2022-03-15 20:41:26,698 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2022-03-15 20:41:26,698 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2022-03-15 20:41:26,699 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-03-15 20:41:26,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-15 20:41:26,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-15 20:41:26,699 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_5 given in one single declaration [2022-03-15 20:41:26,699 INFO L130 BoogieDeclarations]: Found specification of procedure set_5 [2022-03-15 20:41:26,699 INFO L138 BoogieDeclarations]: Found implementation of procedure set_5 [2022-03-15 20:41:26,699 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-15 20:41:26,730 INFO L234 CfgBuilder]: Building ICFG [2022-03-15 20:41:26,731 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-15 20:41:26,789 INFO L275 CfgBuilder]: Performing block encoding [2022-03-15 20:41:26,797 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-15 20:41:26,797 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-03-15 20:41:26,812 INFO L202 PluginConnector]: Adding new model example_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 08:41:26 BoogieIcfgContainer [2022-03-15 20:41:26,812 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-15 20:41:26,832 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-15 20:41:26,832 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-15 20:41:26,835 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-15 20:41:26,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:41:26" (1/2) ... [2022-03-15 20:41:26,836 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75310dba and model type example_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 08:41:26, skipping insertion in model container [2022-03-15 20:41:26,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 08:41:26" (2/2) ... [2022-03-15 20:41:26,837 INFO L111 eAbstractionObserver]: Analyzing ICFG example_6.bpl [2022-03-15 20:41:26,840 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-15 20:41:26,840 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-15 20:41:26,840 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-15 20:41:26,840 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-15 20:41:26,906 INFO L148 ThreadInstanceAdder]: Constructed 36 joinOtherThreadTransitions. [2022-03-15 20:41:26,935 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-15 20:41:26,940 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=MCR, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mLazyFiniteAutomaton=false, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=true, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-03-15 20:41:26,940 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-03-15 20:41:26,948 INFO L126 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-03-15 20:41:26,954 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 52 places, 63 transitions, 264 flow [2022-03-15 20:41:26,956 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 52 places, 63 transitions, 264 flow [2022-03-15 20:41:26,957 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 52 places, 63 transitions, 264 flow [2022-03-15 20:41:27,052 INFO L129 PetriNetUnfolder]: 129/213 cut-off events. [2022-03-15 20:41:27,052 INFO L130 PetriNetUnfolder]: For 192/192 co-relation queries the response was YES. [2022-03-15 20:41:27,056 INFO L84 FinitePrefix]: Finished finitePrefix Result has 424 conditions, 213 events. 129/213 cut-off events. For 192/192 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 724 event pairs, 0 based on Foata normal form. 0/212 useless extension candidates. Maximal degree in co-relation 187. Up to 60 conditions per place. [2022-03-15 20:41:27,061 INFO L116 LiptonReduction]: Number of co-enabled transitions 780 [2022-03-15 20:41:27,178 INFO L131 LiptonReduction]: Checked pairs total: 1833 [2022-03-15 20:41:27,178 INFO L133 LiptonReduction]: Total number of compositions: 7 [2022-03-15 20:41:27,189 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 45 places, 56 transitions, 250 flow [2022-03-15 20:41:27,264 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 793 states, 792 states have (on average 3.9255050505050506) internal successors, (3109), 792 states have internal predecessors, (3109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:41:27,267 INFO L276 IsEmpty]: Start isEmpty. Operand has 793 states, 792 states have (on average 3.9255050505050506) internal successors, (3109), 792 states have internal predecessors, (3109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:41:27,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-15 20:41:27,293 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 20:41:27,294 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 20:41:27,294 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-15 20:41:27,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 20:41:27,298 INFO L85 PathProgramCache]: Analyzing trace with hash -830324697, now seen corresponding path program 1 times [2022-03-15 20:41:27,311 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 20:41:27,311 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113717193] [2022-03-15 20:41:27,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 20:41:27,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 20:41:27,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 20:41:27,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 20:41:27,436 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 20:41:27,436 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113717193] [2022-03-15 20:41:27,436 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113717193] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 20:41:27,436 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 20:41:27,437 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-15 20:41:27,437 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1099341249] [2022-03-15 20:41:27,438 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 20:41:27,440 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 20:41:27,513 INFO L252 McrAutomatonBuilder]: Finished intersection with 191 states and 577 transitions. [2022-03-15 20:41:27,513 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 20:41:28,472 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [1644#(not (= set_4Thread1of1ForFork4_thidvar0 0))] [2022-03-15 20:41:28,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-15 20:41:28,473 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 20:41:28,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-15 20:41:28,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-03-15 20:41:28,497 INFO L87 Difference]: Start difference. First operand has 793 states, 792 states have (on average 3.9255050505050506) internal successors, (3109), 792 states have internal predecessors, (3109), 0 states have call successors, (0), 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 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:41:28,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 20:41:28,564 INFO L93 Difference]: Finished difference Result 561 states and 2077 transitions. [2022-03-15 20:41:28,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-15 20:41:28,566 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-15 20:41:28,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 20:41:28,586 INFO L225 Difference]: With dead ends: 561 [2022-03-15 20:41:28,586 INFO L226 Difference]: Without dead ends: 561 [2022-03-15 20:41:28,587 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-03-15 20:41:28,590 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 35 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 20:41:28,592 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 1 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 20:41:28,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2022-03-15 20:41:28,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 561. [2022-03-15 20:41:28,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 560 states have (on average 3.7089285714285714) internal successors, (2077), 560 states have internal predecessors, (2077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:41:28,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 2077 transitions. [2022-03-15 20:41:28,681 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 2077 transitions. Word has length 19 [2022-03-15 20:41:28,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 20:41:28,681 INFO L470 AbstractCegarLoop]: Abstraction has 561 states and 2077 transitions. [2022-03-15 20:41:28,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:41:28,681 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 2077 transitions. [2022-03-15 20:41:28,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-15 20:41:28,688 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 20:41:28,688 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 20:41:28,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-15 20:41:28,688 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-15 20:41:28,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 20:41:28,689 INFO L85 PathProgramCache]: Analyzing trace with hash 912513507, now seen corresponding path program 1 times [2022-03-15 20:41:28,691 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 20:41:28,691 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111171930] [2022-03-15 20:41:28,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 20:41:28,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 20:41:28,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 20:41:28,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 20:41:28,706 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 20:41:28,706 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111171930] [2022-03-15 20:41:28,707 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111171930] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 20:41:28,707 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 20:41:28,707 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-15 20:41:28,707 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2110305253] [2022-03-15 20:41:28,707 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 20:41:28,708 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 20:41:28,715 INFO L252 McrAutomatonBuilder]: Finished intersection with 191 states and 577 transitions. [2022-03-15 20:41:28,715 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 20:41:29,205 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 20:41:29,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-15 20:41:29,206 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 20:41:29,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-15 20:41:29,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 20:41:29,207 INFO L87 Difference]: Start difference. First operand 561 states and 2077 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:41:29,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 20:41:29,262 INFO L93 Difference]: Finished difference Result 391 states and 1385 transitions. [2022-03-15 20:41:29,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-15 20:41:29,263 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-15 20:41:29,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 20:41:29,265 INFO L225 Difference]: With dead ends: 391 [2022-03-15 20:41:29,265 INFO L226 Difference]: Without dead ends: 391 [2022-03-15 20:41:29,266 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 20:41:29,267 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 17 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 20:41:29,268 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 1 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 20:41:29,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2022-03-15 20:41:29,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 391. [2022-03-15 20:41:29,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 3.551282051282051) internal successors, (1385), 390 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:41:29,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 1385 transitions. [2022-03-15 20:41:29,298 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 1385 transitions. Word has length 19 [2022-03-15 20:41:29,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 20:41:29,298 INFO L470 AbstractCegarLoop]: Abstraction has 391 states and 1385 transitions. [2022-03-15 20:41:29,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:41:29,298 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 1385 transitions. [2022-03-15 20:41:29,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-15 20:41:29,299 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 20:41:29,299 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 20:41:29,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-15 20:41:29,300 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-15 20:41:29,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 20:41:29,300 INFO L85 PathProgramCache]: Analyzing trace with hash 916237227, now seen corresponding path program 1 times [2022-03-15 20:41:29,301 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 20:41:29,301 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564856415] [2022-03-15 20:41:29,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 20:41:29,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 20:41:29,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 20:41:29,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 20:41:29,319 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 20:41:29,319 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564856415] [2022-03-15 20:41:29,319 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564856415] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 20:41:29,319 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 20:41:29,320 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-15 20:41:29,320 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1212128373] [2022-03-15 20:41:29,320 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 20:41:29,321 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 20:41:29,334 INFO L252 McrAutomatonBuilder]: Finished intersection with 191 states and 577 transitions. [2022-03-15 20:41:29,334 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 20:41:29,983 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 20:41:29,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-15 20:41:29,984 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 20:41:29,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-15 20:41:29,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 20:41:29,985 INFO L87 Difference]: Start difference. First operand 391 states and 1385 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:41:30,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 20:41:30,008 INFO L93 Difference]: Finished difference Result 287 states and 961 transitions. [2022-03-15 20:41:30,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-15 20:41:30,008 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-15 20:41:30,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 20:41:30,010 INFO L225 Difference]: With dead ends: 287 [2022-03-15 20:41:30,010 INFO L226 Difference]: Without dead ends: 287 [2022-03-15 20:41:30,010 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 20:41:30,012 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 11 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 20:41:30,013 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 1 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 20:41:30,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2022-03-15 20:41:30,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2022-03-15 20:41:30,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 3.36013986013986) internal successors, (961), 286 states have internal predecessors, (961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:41:30,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 961 transitions. [2022-03-15 20:41:30,021 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 961 transitions. Word has length 19 [2022-03-15 20:41:30,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 20:41:30,021 INFO L470 AbstractCegarLoop]: Abstraction has 287 states and 961 transitions. [2022-03-15 20:41:30,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:41:30,021 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 961 transitions. [2022-03-15 20:41:30,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-15 20:41:30,022 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 20:41:30,022 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 20:41:30,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-15 20:41:30,022 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-15 20:41:30,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 20:41:30,023 INFO L85 PathProgramCache]: Analyzing trace with hash 917130957, now seen corresponding path program 1 times [2022-03-15 20:41:30,024 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 20:41:30,024 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083606300] [2022-03-15 20:41:30,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 20:41:30,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 20:41:30,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 20:41:30,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 20:41:30,193 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 20:41:30,193 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083606300] [2022-03-15 20:41:30,193 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083606300] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 20:41:30,193 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 20:41:30,193 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-15 20:41:30,193 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [707306263] [2022-03-15 20:41:30,193 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 20:41:30,194 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 20:41:30,200 INFO L252 McrAutomatonBuilder]: Finished intersection with 191 states and 577 transitions. [2022-03-15 20:41:30,200 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 20:41:35,186 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 57 new interpolants: [5397#(and (<= x1 0) (<= x1 x0) (< x0 (+ x1 1)) (<= x4 0) (< 0 (+ x1 1)) (<= 0 x4)), 5381#(and (< x4 1) (<= x2 0) (<= x1 x0) (< x0 (+ x1 1)) (< 0 (+ x2 1)) (<= x4 x5) (< x5 (+ x4 1)) (< x2 (+ x1 1)) (<= x1 x2) (<= 0 x4)), 5392#(and (< x4 1) (<= x1 0) (<= x1 x0) (< x0 (+ x1 1)) (<= x4 x5) (< x5 (+ x4 1)) (< 0 (+ x1 1)) (<= 0 x4)), 5418#(and (< x4 1) (< x0 1) (<= x4 x5) (<= 0 x0) (< x5 (+ x4 1)) (<= 0 x4)), 5387#(and (< x0 1) (<= x2 0) (<= 0 x0) (<= 0 x2)), 5405#(and (<= x3 0) (<= x1 0) (< 0 (+ x1 1)) (<= 0 x3)), 5422#(and (< x4 1) (<= x4 x5) (< x5 (+ x4 1)) (<= 0 x4)), 5423#(and (<= x4 0) (<= 0 x4)), 5430#(and (< x5 1) (<= x2 0) (<= 0 x5) (<= 0 x2)), 5384#(and (< x4 1) (< x0 1) (<= x2 0) (<= x4 x5) (<= 0 x0) (< x5 (+ x4 1)) (<= 0 x4) (<= 0 x2)), 5385#(and (< x0 1) (<= x2 0) (<= x4 0) (<= 0 x0) (<= 0 x4) (<= 0 x2)), 5404#(and (< x3 (+ x2 1)) (<= x1 0) (< x2 (+ x1 1)) (<= 0 x3)), 5409#(and (< x5 1) (<= x3 0) (< x0 1) (<= 0 x0) (<= 0 x5) (<= 0 x3)), 5417#(and (<= x3 0) (<= 0 x3)), 5377#(and (< x0 1) (<= x3 x4) (<= x4 0) (<= 0 x0) (< x4 (+ x3 1)) (< x2 1) (<= 0 x4) (<= 0 x2)), 5390#(and (< x3 1) (<= x3 x4) (<= x1 0) (<= x4 x5) (< x5 (+ x4 1)) (< x4 (+ x3 1)) (< 0 (+ x1 1)) (<= 0 x3)), 5403#(and (<= x3 0) (<= x1 0) (<= x1 x0) (< x0 (+ x1 1)) (< 0 (+ x1 1)) (<= 0 x3)), 5393#(and (< x4 1) (<= x1 0) (<= x4 x5) (< x5 (+ x4 1)) (< 0 (+ x1 1)) (<= 0 x4)), 5401#(and (< x5 1) (<= x3 0) (<= x1 0) (<= x1 x0) (< x0 (+ x1 1)) (<= 0 x5) (< 0 (+ x1 1)) (<= 0 x3)), 5427#(and (< x5 1) (<= x1 0) (<= 0 x5) (< 0 (+ x1 1))), 5408#(and (< x3 1) (<= x3 x4) (<= x4 x5) (< x5 (+ x4 1)) (< x4 (+ x3 1)) (<= 0 x3)), 5412#(and (< x0 1) (<= x3 x4) (<= x4 0) (<= 0 x0) (<= 0 x3)), 5407#(and (< x3 (+ x2 1)) (<= x2 x3) (<= x3 x4) (<= x4 x5) (< x5 (+ x4 1)) (< x4 (+ x3 1)) (< x2 1) (<= 0 x2)), 5415#(and (< x3 (+ x2 1)) (< x2 1) (<= 0 x3)), 5376#(and (< x3 (+ x2 1)) (< x0 1) (<= x2 x3) (<= x3 x4) (<= x4 x5) (<= 0 x0) (< x5 (+ x4 1)) (< x4 (+ x3 1)) (< x2 1) (<= 0 x2)), 5402#(and (< x5 1) (<= x3 0) (<= x1 0) (<= 0 x5) (< 0 (+ x1 1)) (<= 0 x3)), 5378#(and (< x5 1) (<= x3 0) (< x3 (+ x2 1)) (<= x2 x3) (<= x1 x0) (< x0 (+ x1 1)) (< 0 (+ x3 1)) (< x2 (+ x1 1)) (<= x1 x2) (<= 0 x5)), 5400#(and (< x5 1) (< x3 (+ x2 1)) (<= x1 0) (< 0 (+ x3 1)) (< x2 (+ x1 1)) (<= 0 x5)), 5399#(and (<= x1 0) (<= x4 0) (< 0 (+ x1 1)) (<= 0 x4)), 5429#(and (< x0 1) (<= 0 x0)), 5396#(and (<= x3 x4) (<= x1 0) (<= x4 0) (< 0 (+ x1 1)) (<= 0 x3)), 5394#(and (<= x3 x4) (<= x1 0) (<= x1 x0) (< x0 (+ x1 1)) (<= x4 0) (< 0 (+ x1 1)) (<= 0 x3)), 5428#(and (< x5 1) (< x0 1) (<= 0 x0) (<= 0 x5)), 5419#(and (< x0 1) (<= x4 0) (<= 0 x0) (<= 0 x4)), 5420#(and (< x4 1) (<= x2 0) (<= x4 x5) (< x5 (+ x4 1)) (<= 0 x4) (<= 0 x2)), 5382#(and (<= x2 0) (<= x1 x0) (< x0 (+ x1 1)) (<= x4 0) (< 0 (+ x2 1)) (< x2 (+ x1 1)) (<= x1 x2) (<= 0 x4)), 5383#(and (< x5 1) (<= x2 0) (<= x1 x0) (< x0 (+ x1 1)) (< 0 (+ x2 1)) (< x2 (+ x1 1)) (<= x1 x2) (<= 0 x5)), 5388#(and (< x3 1) (<= x3 x4) (<= x1 0) (<= x1 x0) (< x0 (+ x1 1)) (<= x4 x5) (< x5 (+ x4 1)) (< x4 (+ x3 1)) (< 0 (+ x1 1)) (<= 0 x3)), 5379#(and (< x5 1) (< x3 (+ x2 1)) (< x0 1) (<= 0 x0) (< 0 (+ x3 1)) (< x2 1) (<= 0 x5)), 5380#(and (< x3 (+ x2 1)) (< x0 1) (<= 0 x0) (< x2 1) (<= 0 x3)), 5395#(and (<= x3 x4) (<= x1 0) (<= x4 0) (< x4 (+ x3 1)) (< x2 (+ x1 1)) (<= x1 x2) (< 0 (+ x1 1)) (<= 0 x4)), 5425#(and (< x5 1) (<= x1 0) (< x2 (+ x1 1)) (<= x1 x2) (<= 0 x5) (< 0 (+ x1 1))), 5398#(and (<= x1 0) (<= x4 0) (< x2 (+ x1 1)) (<= x1 x2) (< 0 (+ x1 1)) (<= 0 x4)), 5411#(and (< x5 1) (<= x3 0) (<= 0 x5) (<= 0 x3)), 5424#(and (< x5 1) (<= x1 0) (<= x1 x0) (< x0 (+ x1 1)) (<= 0 x5) (< 0 (+ x1 1))), 5416#(and (<= x3 0) (< x0 1) (<= 0 x0) (<= 0 x3)), 5421#(and (<= x2 0) (<= x4 0) (<= 0 x4) (<= 0 x2)), 5431#(and (<= x2 0) (<= 0 x2)), 5413#(and (<= x3 x4) (<= x4 0) (< x4 (+ x3 1)) (< x2 1) (<= 0 x4) (<= 0 x2)), 5391#(and (< x4 1) (<= x1 0) (<= x4 x5) (< x5 (+ x4 1)) (< x2 (+ x1 1)) (<= x1 x2) (< 0 (+ x1 1)) (<= 0 x4)), 5432#(and (< x5 1) (<= 0 x5)), 5406#(and (< x3 1) (< x0 1) (<= x3 x4) (<= x4 x5) (<= 0 x0) (< x5 (+ x4 1)) (< x4 (+ x3 1)) (<= 0 x3)), 5386#(and (< x5 1) (< x0 1) (<= x2 0) (<= 0 x0) (<= 0 x5) (<= 0 x2)), 5389#(and (< x3 (+ x2 1)) (<= x2 x3) (<= x3 x4) (<= x1 0) (<= x4 x5) (< x5 (+ x4 1)) (< x4 (+ x3 1)) (< x2 (+ x1 1)) (<= x1 x2) (< 0 (+ x1 1))), 5410#(and (< x5 1) (< x3 (+ x2 1)) (< 0 (+ x3 1)) (< x2 1) (<= 0 x5)), 5414#(and (<= x3 x4) (<= x4 0) (<= 0 x3)), 5426#(and (<= x1 0) (< x2 (+ x1 1)) (<= 0 x2))] [2022-03-15 20:41:35,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-03-15 20:41:35,186 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 20:41:35,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-03-15 20:41:35,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=667, Invalid=3493, Unknown=0, NotChecked=0, Total=4160 [2022-03-15 20:41:35,188 INFO L87 Difference]: Start difference. First operand 287 states and 961 transitions. Second operand has 65 states, 64 states have (on average 4.984375) internal successors, (319), 65 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:41:37,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 20:41:37,318 INFO L93 Difference]: Finished difference Result 286 states and 960 transitions. [2022-03-15 20:41:37,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-03-15 20:41:37,319 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 64 states have (on average 4.984375) internal successors, (319), 65 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-15 20:41:37,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 20:41:37,320 INFO L225 Difference]: With dead ends: 286 [2022-03-15 20:41:37,320 INFO L226 Difference]: Without dead ends: 0 [2022-03-15 20:41:37,321 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 100 SyntacticMatches, 15 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2053 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=732, Invalid=3558, Unknown=0, NotChecked=0, Total=4290 [2022-03-15 20:41:37,323 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 612 mSDsluCounter, 4405 mSDsCounter, 0 mSdLazyCounter, 5615 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 612 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-03-15 20:41:37,324 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [612 Valid, 0 Invalid, 5615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5615 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-03-15 20:41:37,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-15 20:41:37,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-15 20:41:37,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:41:37,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-15 20:41:37,325 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2022-03-15 20:41:37,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 20:41:37,325 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-15 20:41:37,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 64 states have (on average 4.984375) internal successors, (319), 65 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:41:37,325 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-15 20:41:37,326 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-15 20:41:37,327 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (6 of 7 remaining) [2022-03-15 20:41:37,328 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (5 of 7 remaining) [2022-03-15 20:41:37,328 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (4 of 7 remaining) [2022-03-15 20:41:37,328 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (3 of 7 remaining) [2022-03-15 20:41:37,328 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATION (2 of 7 remaining) [2022-03-15 20:41:37,328 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4INUSE_VIOLATION (1 of 7 remaining) [2022-03-15 20:41:37,328 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5INUSE_VIOLATION (0 of 7 remaining) [2022-03-15 20:41:37,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-15 20:41:37,336 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-03-15 20:41:37,340 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-15 20:41:37,340 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-15 20:41:37,342 INFO L202 PluginConnector]: Adding new model example_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.03 08:41:37 BasicIcfg [2022-03-15 20:41:37,342 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-15 20:41:37,344 INFO L158 Benchmark]: Toolchain (without parser) took 10740.84ms. Allocated memory was 168.8MB in the beginning and 352.3MB in the end (delta: 183.5MB). Free memory was 127.7MB in the beginning and 268.1MB in the end (delta: -140.4MB). Peak memory consumption was 44.1MB. Max. memory is 8.0GB. [2022-03-15 20:41:37,344 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.10ms. Allocated memory is still 168.8MB. Free memory is still 128.8MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-15 20:41:37,344 INFO L158 Benchmark]: Boogie Procedure Inliner took 18.01ms. Allocated memory is still 168.8MB. Free memory was 127.7MB in the beginning and 126.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-15 20:41:37,344 INFO L158 Benchmark]: Boogie Preprocessor took 11.20ms. Allocated memory is still 168.8MB. Free memory was 126.0MB in the beginning and 125.1MB in the end (delta: 891.4kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-15 20:41:37,344 INFO L158 Benchmark]: RCFGBuilder took 197.67ms. Allocated memory is still 168.8MB. Free memory was 125.1MB in the beginning and 116.2MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2022-03-15 20:41:37,345 INFO L158 Benchmark]: TraceAbstraction took 10510.22ms. Allocated memory was 168.8MB in the beginning and 352.3MB in the end (delta: 183.5MB). Free memory was 115.6MB in the beginning and 268.1MB in the end (delta: -152.5MB). Peak memory consumption was 31.5MB. Max. memory is 8.0GB. [2022-03-15 20:41:37,346 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 168.8MB. Free memory is still 128.8MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 18.01ms. Allocated memory is still 168.8MB. Free memory was 127.7MB in the beginning and 126.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 11.20ms. Allocated memory is still 168.8MB. Free memory was 126.0MB in the beginning and 125.1MB in the end (delta: 891.4kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 197.67ms. Allocated memory is still 168.8MB. Free memory was 125.1MB in the beginning and 116.2MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * TraceAbstraction took 10510.22ms. Allocated memory was 168.8MB in the beginning and 352.3MB in the end (delta: 183.5MB). Free memory was 115.6MB in the beginning and 268.1MB in the end (delta: -152.5MB). Peak memory consumption was 31.5MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.2s, 52 PlacesBefore, 45 PlacesAfterwards, 63 TransitionsBefore, 56 TransitionsAfterwards, 780 CoEnabledTransitionPairs, 1 FixpointIterations, 1 TrivialSequentialCompositions, 6 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 7 TotalNumberOfCompositions, 1833 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1833, positive: 1833, positive conditional: 0, positive unconditional: 1833, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 399, positive: 399, positive conditional: 0, positive unconditional: 399, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1833, positive: 1434, positive conditional: 0, positive unconditional: 1434, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 399, unknown conditional: 0, unknown unconditional: 399] , Statistics on independence cache: Total cache size (in pairs): 180, Positive cache size: 180, Positive conditional cache size: 0, Positive unconditional cache size: 180, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 25]: 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 13 procedures, 58 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 10.4s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.3s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 675 SdHoareTripleChecker+Valid, 2.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 675 mSDsluCounter, 3 SdHoareTripleChecker+Invalid, 1.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4437 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5757 IncrementalHoareTripleChecker+Invalid, 5767 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 3 mSDtfsCounter, 5757 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 701 GetRequests, 618 SyntacticMatches, 15 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2053 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=793occurred in iteration=0, InterpolantAutomatonStates: 74, 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 76 NumberOfCodeBlocks, 76 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 72 ConstructedInterpolants, 0 QuantifiedInterpolants, 592 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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! [2022-03-15 20:41:37,381 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...