/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/weaver-benchmarks/generated/parallel/ticket-7.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-c7b2d19 [2022-03-15 21:25:34,220 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-15 21:25:34,221 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-15 21:25:34,266 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-15 21:25:34,283 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-15 21:25:34,284 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-15 21:25:34,285 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-15 21:25:34,286 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-15 21:25:34,287 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-15 21:25:34,288 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-15 21:25:34,288 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-15 21:25:34,289 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2022-03-15 21:25:34,314 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-15 21:25:34,315 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-15 21:25:34,315 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-15 21:25:34,316 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 21:25:34,329 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-15 21:25:34,329 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-15 21:25:34,330 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-15 21:25:34,330 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-15 21:25:34,330 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-15 21:25:34,330 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-15 21:25:34,331 INFO L138 SettingsManager]: * Use SBE=true [2022-03-15 21:25:34,331 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-15 21:25:34,331 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-15 21:25:34,331 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-15 21:25:34,331 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-15 21:25:34,331 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-15 21:25:34,331 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-15 21:25:34,331 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-15 21:25:34,332 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-15 21:25:34,332 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-15 21:25:34,332 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-15 21:25:34,332 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-15 21:25:34,332 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-15 21:25:34,332 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-15 21:25:34,332 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-15 21:25:34,332 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-15 21:25:34,332 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-15 21:25:34,333 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 21:25:34,333 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-15 21:25:34,333 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-15 21:25:34,333 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-15 21:25:34,333 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-15 21:25:34,333 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-15 21:25:34,333 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2022-03-15 21:25:34,333 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2022-03-15 21:25:34,334 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-15 21:25:34,334 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-15 21:25:34,533 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-15 21:25:34,554 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-15 21:25:34,556 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-15 21:25:34,559 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-03-15 21:25:34,560 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-03-15 21:25:34,561 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-7.wvr.bpl [2022-03-15 21:25:34,561 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-7.wvr.bpl' [2022-03-15 21:25:34,580 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-15 21:25:34,581 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-15 21:25:34,582 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-15 21:25:34,582 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-15 21:25:34,582 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-15 21:25:34,591 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 09:25:34" (1/1) ... [2022-03-15 21:25:34,597 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 09:25:34" (1/1) ... [2022-03-15 21:25:34,601 INFO L137 Inliner]: procedures = 8, calls = 7, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-03-15 21:25:34,603 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-15 21:25:34,604 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-15 21:25:34,604 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-15 21:25:34,604 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-15 21:25:34,609 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 09:25:34" (1/1) ... [2022-03-15 21:25:34,609 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 09:25:34" (1/1) ... [2022-03-15 21:25:34,616 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 09:25:34" (1/1) ... [2022-03-15 21:25:34,616 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 09:25:34" (1/1) ... [2022-03-15 21:25:34,623 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 09:25:34" (1/1) ... [2022-03-15 21:25:34,624 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 09:25:34" (1/1) ... [2022-03-15 21:25:34,627 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 09:25:34" (1/1) ... [2022-03-15 21:25:34,629 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-15 21:25:34,629 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-15 21:25:34,629 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-15 21:25:34,629 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-15 21:25:34,631 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 09:25:34" (1/1) ... [2022-03-15 21:25:34,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 21:25:34,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 21:25:34,654 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 21:25:34,672 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 21:25:34,684 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-03-15 21:25:34,684 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-15 21:25:34,684 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-15 21:25:34,684 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-03-15 21:25:34,684 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-15 21:25:34,684 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-15 21:25:34,684 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-03-15 21:25:34,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-15 21:25:34,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-15 21:25:34,686 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2022-03-15 21:25:34,686 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-03-15 21:25:34,686 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-03-15 21:25:34,687 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2022-03-15 21:25:34,687 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-03-15 21:25:34,687 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-03-15 21:25:34,687 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2022-03-15 21:25:34,688 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2022-03-15 21:25:34,688 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2022-03-15 21:25:34,688 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread6 given in one single declaration [2022-03-15 21:25:34,690 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2022-03-15 21:25:34,690 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2022-03-15 21:25:34,691 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread7 given in one single declaration [2022-03-15 21:25:34,692 INFO L130 BoogieDeclarations]: Found specification of procedure thread7 [2022-03-15 21:25:34,692 INFO L138 BoogieDeclarations]: Found implementation of procedure thread7 [2022-03-15 21:25:34,693 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 21:25:34,731 INFO L234 CfgBuilder]: Building ICFG [2022-03-15 21:25:34,733 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-15 21:25:34,874 INFO L275 CfgBuilder]: Performing block encoding [2022-03-15 21:25:34,887 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-15 21:25:34,887 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-03-15 21:25:34,888 INFO L202 PluginConnector]: Adding new model ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 09:25:34 BoogieIcfgContainer [2022-03-15 21:25:34,889 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-15 21:25:34,890 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-15 21:25:34,890 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-15 21:25:34,892 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-15 21:25:34,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 09:25:34" (1/2) ... [2022-03-15 21:25:34,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c748bf6 and model type ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 09:25:34, skipping insertion in model container [2022-03-15 21:25:34,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 09:25:34" (2/2) ... [2022-03-15 21:25:34,894 INFO L111 eAbstractionObserver]: Analyzing ICFG ticket-7.wvr.bpl [2022-03-15 21:25:34,897 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-15 21:25:34,897 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-15 21:25:34,897 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-15 21:25:34,897 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-15 21:25:34,941 INFO L148 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2022-03-15 21:25:34,984 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-15 21:25:34,988 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 21:25:34,989 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-03-15 21:25:35,005 INFO L126 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-03-15 21:25:35,014 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 62 transitions, 180 flow [2022-03-15 21:25:35,018 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 62 transitions, 180 flow [2022-03-15 21:25:35,019 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 84 places, 62 transitions, 180 flow [2022-03-15 21:25:35,066 INFO L129 PetriNetUnfolder]: 0/55 cut-off events. [2022-03-15 21:25:35,066 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-03-15 21:25:35,073 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 55 events. 0/55 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 147 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2022-03-15 21:25:35,076 INFO L116 LiptonReduction]: Number of co-enabled transitions 1542 [2022-03-15 21:25:35,209 INFO L131 LiptonReduction]: Checked pairs total: 5190 [2022-03-15 21:25:35,209 INFO L133 LiptonReduction]: Total number of compositions: 10 [2022-03-15 21:25:35,216 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 75 places, 53 transitions, 162 flow [2022-03-15 21:25:40,152 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 136720 states, 136719 states have (on average 5.628573936321945) internal successors, (769533), 136719 states have internal predecessors, (769533), 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 21:25:40,696 INFO L276 IsEmpty]: Start isEmpty. Operand has 136720 states, 136719 states have (on average 5.628573936321945) internal successors, (769533), 136719 states have internal predecessors, (769533), 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 21:25:41,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-03-15 21:25:41,589 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:25:41,590 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:25:41,590 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 4 more)] === [2022-03-15 21:25:41,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:25:41,594 INFO L85 PathProgramCache]: Analyzing trace with hash -516081700, now seen corresponding path program 1 times [2022-03-15 21:25:41,614 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:25:41,615 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143922700] [2022-03-15 21:25:41,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:25:41,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:25:41,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:25:41,947 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 21:25:41,947 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:25:41,947 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143922700] [2022-03-15 21:25:41,948 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143922700] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 21:25:41,948 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 21:25:41,948 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-15 21:25:41,949 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [985708020] [2022-03-15 21:25:41,950 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:25:41,961 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:25:42,198 INFO L252 McrAutomatonBuilder]: Finished intersection with 303 states and 759 transitions. [2022-03-15 21:25:42,199 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:25:44,676 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 6 new interpolants: [273537#(<= (+ s 4) m6), 273535#(not (<= m6 s)), 273538#(<= s t), 273539#(<= s (+ t 1)), 273540#(<= s (+ 2 t)), 273536#(not (<= m6 (+ s 1)))] [2022-03-15 21:25:44,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-15 21:25:44,677 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:25:44,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-15 21:25:44,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2022-03-15 21:25:45,004 INFO L87 Difference]: Start difference. First operand has 136720 states, 136719 states have (on average 5.628573936321945) internal successors, (769533), 136719 states have internal predecessors, (769533), 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 14 states, 14 states have (on average 8.714285714285714) internal successors, (122), 13 states have internal predecessors, (122), 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 21:25:51,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:25:51,940 INFO L93 Difference]: Finished difference Result 427636 states and 2192126 transitions. [2022-03-15 21:25:51,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-15 21:25:51,942 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.714285714285714) internal successors, (122), 13 states have internal predecessors, (122), 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 45 [2022-03-15 21:25:51,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:25:56,152 INFO L225 Difference]: With dead ends: 427636 [2022-03-15 21:25:56,152 INFO L226 Difference]: Without dead ends: 427636 [2022-03-15 21:25:56,153 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 190 SyntacticMatches, 63 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 365 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=195, Invalid=357, Unknown=0, NotChecked=0, Total=552 [2022-03-15 21:25:56,155 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 272 mSDsluCounter, 648 mSDsCounter, 0 mSdLazyCounter, 1406 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 1559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 1406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-15 21:25:56,156 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [272 Valid, 355 Invalid, 1559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 1406 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-15 21:25:57,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427636 states. [2022-03-15 21:26:10,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427636 to 239774. [2022-03-15 21:26:11,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239774 states, 239773 states have (on average 5.378875019289078) internal successors, (1289709), 239773 states have internal predecessors, (1289709), 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 21:26:14,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239774 states to 239774 states and 1289709 transitions. [2022-03-15 21:26:14,047 INFO L78 Accepts]: Start accepts. Automaton has 239774 states and 1289709 transitions. Word has length 45 [2022-03-15 21:26:14,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:26:14,048 INFO L470 AbstractCegarLoop]: Abstraction has 239774 states and 1289709 transitions. [2022-03-15 21:26:14,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.714285714285714) internal successors, (122), 13 states have internal predecessors, (122), 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 21:26:14,048 INFO L276 IsEmpty]: Start isEmpty. Operand 239774 states and 1289709 transitions. [2022-03-15 21:26:15,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-03-15 21:26:15,685 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:26:15,685 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:26:15,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-15 21:26:15,686 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 4 more)] === [2022-03-15 21:26:15,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:26:15,686 INFO L85 PathProgramCache]: Analyzing trace with hash 855614596, now seen corresponding path program 2 times [2022-03-15 21:26:15,687 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:26:15,687 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141882851] [2022-03-15 21:26:15,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:26:15,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:26:15,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:26:15,765 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 21:26:15,765 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:26:15,766 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141882851] [2022-03-15 21:26:15,766 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141882851] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 21:26:15,766 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 21:26:15,766 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-15 21:26:15,766 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [53238970] [2022-03-15 21:26:15,766 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:26:15,773 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:26:15,842 INFO L252 McrAutomatonBuilder]: Finished intersection with 283 states and 703 transitions. [2022-03-15 21:26:15,842 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:26:16,970 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 7 new interpolants: [1180758#(<= s t), 1180757#(<= (+ 6 s) t), 1180755#(<= (+ 5 s) t), 1180754#(<= (+ 5 s) m4), 1180756#(<= (+ 6 s) m4), 1180759#(not (<= m4 s)), 1180753#(<= (+ s 4) m4)] [2022-03-15 21:26:16,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-15 21:26:16,972 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:26:16,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-15 21:26:16,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2022-03-15 21:26:16,972 INFO L87 Difference]: Start difference. First operand 239774 states and 1289709 transitions. Second operand has 15 states, 15 states have (on average 8.0) internal successors, (120), 14 states have internal predecessors, (120), 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 21:26:24,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:26:24,318 INFO L93 Difference]: Finished difference Result 412678 states and 2071777 transitions. [2022-03-15 21:26:24,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-03-15 21:26:24,321 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 8.0) internal successors, (120), 14 states have internal predecessors, (120), 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 45 [2022-03-15 21:26:24,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:26:29,641 INFO L225 Difference]: With dead ends: 412678 [2022-03-15 21:26:29,641 INFO L226 Difference]: Without dead ends: 412678 [2022-03-15 21:26:29,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 235 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=299, Invalid=571, Unknown=0, NotChecked=0, Total=870 [2022-03-15 21:26:29,643 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 297 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 1705 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 1906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 1705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 21:26:29,644 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [297 Valid, 467 Invalid, 1906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 1705 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-15 21:26:31,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412678 states. [2022-03-15 21:26:46,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412678 to 351957. [2022-03-15 21:26:47,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351957 states, 351956 states have (on average 5.083933787177942) internal successors, (1789321), 351956 states have internal predecessors, (1789321), 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 21:26:52,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351957 states to 351957 states and 1789321 transitions. [2022-03-15 21:26:52,318 INFO L78 Accepts]: Start accepts. Automaton has 351957 states and 1789321 transitions. Word has length 45 [2022-03-15 21:26:52,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:26:52,323 INFO L470 AbstractCegarLoop]: Abstraction has 351957 states and 1789321 transitions. [2022-03-15 21:26:52,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 8.0) internal successors, (120), 14 states have internal predecessors, (120), 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 21:26:52,323 INFO L276 IsEmpty]: Start isEmpty. Operand 351957 states and 1789321 transitions.