/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_4.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-c7b2d19 [2022-03-15 20:41:18,322 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-15 20:41:18,356 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-15 20:41:18,392 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-15 20:41:18,434 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-15 20:41:18,434 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-15 20:41:18,435 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-15 20:41:18,436 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 20:41:18,458 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-15 20:41:18,459 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-15 20:41:18,460 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-15 20:41:18,460 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-15 20:41:18,460 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-15 20:41:18,460 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-15 20:41:18,460 INFO L138 SettingsManager]: * Use SBE=true [2022-03-15 20:41:18,460 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-15 20:41:18,460 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-15 20:41:18,460 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-15 20:41:18,461 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-15 20:41:18,461 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-15 20:41:18,461 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-15 20:41:18,461 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-15 20:41:18,461 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-15 20:41:18,462 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-15 20:41:18,462 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-15 20:41:18,462 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-15 20:41:18,462 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-15 20:41:18,462 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-15 20:41:18,462 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-15 20:41:18,462 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-15 20:41:18,462 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-15 20:41:18,462 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 20:41:18,462 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-15 20:41:18,462 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-15 20:41:18,462 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-15 20:41:18,463 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-15 20:41:18,463 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-15 20:41:18,464 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2022-03-15 20:41:18,464 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2022-03-15 20:41:18,464 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-15 20:41:18,464 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-15 20:41:18,614 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-15 20:41:18,643 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-15 20:41:18,644 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-15 20:41:18,645 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-03-15 20:41:18,646 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-03-15 20:41:18,647 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_4.bpl [2022-03-15 20:41:18,647 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_4.bpl' [2022-03-15 20:41:18,661 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-15 20:41:18,662 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-15 20:41:18,663 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-15 20:41:18,663 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-15 20:41:18,663 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-15 20:41:18,671 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:41:18" (1/1) ... [2022-03-15 20:41:18,676 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:41:18" (1/1) ... [2022-03-15 20:41:18,680 INFO L137 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-03-15 20:41:18,681 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-15 20:41:18,682 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-15 20:41:18,683 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-15 20:41:18,683 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-15 20:41:18,688 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:41:18" (1/1) ... [2022-03-15 20:41:18,688 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:41:18" (1/1) ... [2022-03-15 20:41:18,688 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:41:18" (1/1) ... [2022-03-15 20:41:18,689 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:41:18" (1/1) ... [2022-03-15 20:41:18,690 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:41:18" (1/1) ... [2022-03-15 20:41:18,690 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:41:18" (1/1) ... [2022-03-15 20:41:18,691 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:41:18" (1/1) ... [2022-03-15 20:41:18,691 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-15 20:41:18,692 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-15 20:41:18,692 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-15 20:41:18,692 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-15 20:41:18,693 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:41:18" (1/1) ... [2022-03-15 20:41:18,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 20:41:18,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 20:41:18,724 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 20:41:18,738 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 20:41:18,750 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2022-03-15 20:41:18,751 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2022-03-15 20:41:18,751 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2022-03-15 20:41:18,751 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2022-03-15 20:41:18,751 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2022-03-15 20:41:18,751 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2022-03-15 20:41:18,751 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2022-03-15 20:41:18,751 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2022-03-15 20:41:18,751 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2022-03-15 20:41:18,752 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2022-03-15 20:41:18,752 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2022-03-15 20:41:18,752 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2022-03-15 20:41:18,752 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-03-15 20:41:18,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-15 20:41:18,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-15 20:41:18,754 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 20:41:18,784 INFO L234 CfgBuilder]: Building ICFG [2022-03-15 20:41:18,786 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-15 20:41:18,852 INFO L275 CfgBuilder]: Performing block encoding [2022-03-15 20:41:18,859 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-15 20:41:18,859 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-03-15 20:41:18,861 INFO L202 PluginConnector]: Adding new model example_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 08:41:18 BoogieIcfgContainer [2022-03-15 20:41:18,861 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-15 20:41:18,863 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-15 20:41:18,863 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-15 20:41:18,865 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-15 20:41:18,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:41:18" (1/2) ... [2022-03-15 20:41:18,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e1fdf47 and model type example_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 08:41:18, skipping insertion in model container [2022-03-15 20:41:18,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 08:41:18" (2/2) ... [2022-03-15 20:41:18,868 INFO L111 eAbstractionObserver]: Analyzing ICFG example_4.bpl [2022-03-15 20:41:18,871 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-15 20:41:18,871 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-15 20:41:18,872 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-15 20:41:18,872 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-15 20:41:18,923 INFO L148 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2022-03-15 20:41:18,970 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-15 20:41:18,976 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 20:41:18,976 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-03-15 20:41:18,988 INFO L126 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-03-15 20:41:18,997 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 36 places, 35 transitions, 138 flow [2022-03-15 20:41:18,999 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 36 places, 35 transitions, 138 flow [2022-03-15 20:41:19,000 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 36 places, 35 transitions, 138 flow [2022-03-15 20:41:19,032 INFO L129 PetriNetUnfolder]: 17/47 cut-off events. [2022-03-15 20:41:19,032 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2022-03-15 20:41:19,035 INFO L84 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 47 events. 17/47 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 122 event pairs, 0 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 41. Up to 12 conditions per place. [2022-03-15 20:41:19,037 INFO L116 LiptonReduction]: Number of co-enabled transitions 216 [2022-03-15 20:41:19,140 INFO L131 LiptonReduction]: Checked pairs total: 414 [2022-03-15 20:41:19,140 INFO L133 LiptonReduction]: Total number of compositions: 5 [2022-03-15 20:41:19,149 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 30 transitions, 128 flow [2022-03-15 20:41:19,193 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 97 states, 96 states have (on average 2.59375) internal successors, (249), 96 states have internal predecessors, (249), 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 20:41:19,194 INFO L276 IsEmpty]: Start isEmpty. Operand has 97 states, 96 states have (on average 2.59375) internal successors, (249), 96 states have internal predecessors, (249), 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 20:41:19,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-03-15 20:41:19,200 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 20:41:19,200 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 20:41:19,201 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 20:41:19,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 20:41:19,204 INFO L85 PathProgramCache]: Analyzing trace with hash 13397333, now seen corresponding path program 1 times [2022-03-15 20:41:19,216 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 20:41:19,216 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109755940] [2022-03-15 20:41:19,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 20:41:19,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 20:41:19,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 20:41:19,321 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 20:41:19,322 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 20:41:19,322 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109755940] [2022-03-15 20:41:19,322 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109755940] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 20:41:19,322 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 20:41:19,323 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-15 20:41:19,323 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1289779114] [2022-03-15 20:41:19,324 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 20:41:19,326 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 20:41:19,341 INFO L252 McrAutomatonBuilder]: Finished intersection with 47 states and 97 transitions. [2022-03-15 20:41:19,341 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 20:41:19,632 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 20:41:19,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-15 20:41:19,633 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 20:41:19,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-15 20:41:19,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 20:41:19,649 INFO L87 Difference]: Start difference. First operand has 97 states, 96 states have (on average 2.59375) internal successors, (249), 96 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 20:41:19,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 20:41:19,675 INFO L93 Difference]: Finished difference Result 71 states and 169 transitions. [2022-03-15 20:41:19,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-15 20:41:19,680 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 13 [2022-03-15 20:41:19,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 20:41:19,686 INFO L225 Difference]: With dead ends: 71 [2022-03-15 20:41:19,686 INFO L226 Difference]: Without dead ends: 71 [2022-03-15 20:41:19,686 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 35 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 20:41:19,689 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 10 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 20:41:19,690 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 1 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 20:41:19,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-03-15 20:41:19,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2022-03-15 20:41:19,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 2.414285714285714) internal successors, (169), 70 states have internal predecessors, (169), 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 20:41:19,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 169 transitions. [2022-03-15 20:41:19,732 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 169 transitions. Word has length 13 [2022-03-15 20:41:19,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 20:41:19,732 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 169 transitions. [2022-03-15 20:41:19,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 20:41:19,740 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 169 transitions. [2022-03-15 20:41:19,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-03-15 20:41:19,741 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 20:41:19,741 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 20:41:19,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-15 20:41:19,742 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 20:41:19,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 20:41:19,742 INFO L85 PathProgramCache]: Analyzing trace with hash 13428023, now seen corresponding path program 1 times [2022-03-15 20:41:19,745 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 20:41:19,746 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42053330] [2022-03-15 20:41:19,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 20:41:19,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 20:41:19,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 20:41:19,773 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 20:41:19,774 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 20:41:19,774 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42053330] [2022-03-15 20:41:19,774 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42053330] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 20:41:19,774 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 20:41:19,774 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-15 20:41:19,774 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [592943172] [2022-03-15 20:41:19,775 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 20:41:19,775 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 20:41:19,778 INFO L252 McrAutomatonBuilder]: Finished intersection with 47 states and 97 transitions. [2022-03-15 20:41:19,778 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 20:41:19,955 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 20:41:19,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-15 20:41:19,957 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 20:41:19,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-15 20:41:19,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 20:41:19,959 INFO L87 Difference]: Start difference. First operand 71 states and 169 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:41:19,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 20:41:19,986 INFO L93 Difference]: Finished difference Result 55 states and 121 transitions. [2022-03-15 20:41:19,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-15 20:41:19,987 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-03-15 20:41:19,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 20:41:19,988 INFO L225 Difference]: With dead ends: 55 [2022-03-15 20:41:19,988 INFO L226 Difference]: Without dead ends: 55 [2022-03-15 20:41:19,988 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 35 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 20:41:19,989 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 6 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 20:41:19,989 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 1 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 20:41:19,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-03-15 20:41:19,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2022-03-15 20:41:19,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 2.240740740740741) internal successors, (121), 54 states have internal predecessors, (121), 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 20:41:19,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 121 transitions. [2022-03-15 20:41:19,995 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 121 transitions. Word has length 13 [2022-03-15 20:41:19,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 20:41:19,995 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 121 transitions. [2022-03-15 20:41:19,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:41:19,996 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 121 transitions. [2022-03-15 20:41:19,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-03-15 20:41:19,996 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 20:41:19,996 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 20:41:19,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-15 20:41:19,997 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 20:41:19,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 20:41:19,997 INFO L85 PathProgramCache]: Analyzing trace with hash 13456853, now seen corresponding path program 1 times [2022-03-15 20:41:19,998 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 20:41:19,998 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930541778] [2022-03-15 20:41:19,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 20:41:19,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 20:41:20,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 20:41:20,102 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 20:41:20,102 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 20:41:20,102 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930541778] [2022-03-15 20:41:20,103 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930541778] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 20:41:20,103 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 20:41:20,103 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-15 20:41:20,103 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2147020305] [2022-03-15 20:41:20,103 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 20:41:20,104 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 20:41:20,105 INFO L252 McrAutomatonBuilder]: Finished intersection with 47 states and 97 transitions. [2022-03-15 20:41:20,105 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 20:41:20,763 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 11 new interpolants: [632#(and (<= x2 0) (<= 0 x2)), 623#(and (<= x2 x1) (<= x0 x1) (< x2 1) (< x1 (+ x0 1)) (< x1 (+ x2 1)) (<= 0 x2)), 630#(and (<= x2 0) (<= x0 0) (<= 0 x0) (<= 0 x2)), 626#(and (<= x3 0) (<= 0 x1) (< x1 1) (<= x0 x1) (< 0 (+ x3 1)) (< x1 (+ x0 1))), 628#(and (<= x3 0) (<= 0 x1) (< x1 1) (< 0 (+ x3 1))), 631#(and (<= x3 x2) (<= x2 0) (< x2 (+ x3 1)) (<= 0 x2)), 624#(and (<= x3 x2) (<= x2 x1) (<= 0 x1) (< x1 1) (< x2 (+ x3 1)) (< x1 (+ x2 1))), 627#(and (<= 0 x1) (< x1 1) (<= x0 x1) (< x1 (+ x0 1))), 633#(and (<= x3 0) (<= 0 x3)), 625#(and (<= 0 x1) (< x2 1) (< x1 (+ x2 1))), 629#(and (<= 0 x1) (< x1 1))] [2022-03-15 20:41:20,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-15 20:41:20,765 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 20:41:20,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-15 20:41:20,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2022-03-15 20:41:20,766 INFO L87 Difference]: Start difference. First operand 55 states and 121 transitions. Second operand has 17 states, 16 states have (on average 3.9375) internal successors, (63), 17 states have internal predecessors, (63), 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 20:41:21,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 20:41:21,016 INFO L93 Difference]: Finished difference Result 54 states and 120 transitions. [2022-03-15 20:41:21,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-15 20:41:21,017 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.9375) internal successors, (63), 17 states have internal predecessors, (63), 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 13 [2022-03-15 20:41:21,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 20:41:21,017 INFO L225 Difference]: With dead ends: 54 [2022-03-15 20:41:21,017 INFO L226 Difference]: Without dead ends: 0 [2022-03-15 20:41:21,018 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2022-03-15 20:41:21,018 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 84 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 20:41:21,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 0 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 20:41:21,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-15 20:41:21,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-15 20:41:21,019 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 20:41:21,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-15 20:41:21,020 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2022-03-15 20:41:21,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 20:41:21,020 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-15 20:41:21,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.9375) internal successors, (63), 17 states have internal predecessors, (63), 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 20:41:21,020 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-15 20:41:21,020 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-15 20:41:21,022 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (4 of 5 remaining) [2022-03-15 20:41:21,023 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (3 of 5 remaining) [2022-03-15 20:41:21,023 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (2 of 5 remaining) [2022-03-15 20:41:21,023 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (1 of 5 remaining) [2022-03-15 20:41:21,023 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATION (0 of 5 remaining) [2022-03-15 20:41:21,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-15 20:41:21,026 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-03-15 20:41:21,027 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-15 20:41:21,027 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-15 20:41:21,030 INFO L202 PluginConnector]: Adding new model example_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.03 08:41:21 BasicIcfg [2022-03-15 20:41:21,030 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-15 20:41:21,031 INFO L158 Benchmark]: Toolchain (without parser) took 2368.25ms. Allocated memory was 194.0MB in the beginning and 266.3MB in the end (delta: 72.4MB). Free memory was 158.9MB in the beginning and 178.3MB in the end (delta: -19.4MB). Peak memory consumption was 52.8MB. Max. memory is 8.0GB. [2022-03-15 20:41:21,031 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.09ms. Allocated memory is still 194.0MB. Free memory is still 159.9MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-15 20:41:21,031 INFO L158 Benchmark]: Boogie Procedure Inliner took 18.78ms. Allocated memory is still 194.0MB. Free memory was 158.9MB in the beginning and 157.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-15 20:41:21,031 INFO L158 Benchmark]: Boogie Preprocessor took 9.09ms. Allocated memory is still 194.0MB. Free memory was 157.3MB in the beginning and 156.5MB in the end (delta: 853.8kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-15 20:41:21,032 INFO L158 Benchmark]: RCFGBuilder took 169.17ms. Allocated memory is still 194.0MB. Free memory was 156.4MB in the beginning and 148.1MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2022-03-15 20:41:21,032 INFO L158 Benchmark]: TraceAbstraction took 2167.04ms. Allocated memory was 194.0MB in the beginning and 266.3MB in the end (delta: 72.4MB). Free memory was 147.6MB in the beginning and 178.3MB in the end (delta: -30.7MB). Peak memory consumption was 41.3MB. Max. memory is 8.0GB. [2022-03-15 20:41:21,033 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 0.09ms. Allocated memory is still 194.0MB. Free memory is still 159.9MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 18.78ms. Allocated memory is still 194.0MB. Free memory was 158.9MB in the beginning and 157.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 9.09ms. Allocated memory is still 194.0MB. Free memory was 157.3MB in the beginning and 156.5MB in the end (delta: 853.8kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 169.17ms. Allocated memory is still 194.0MB. Free memory was 156.4MB in the beginning and 148.1MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * TraceAbstraction took 2167.04ms. Allocated memory was 194.0MB in the beginning and 266.3MB in the end (delta: 72.4MB). Free memory was 147.6MB in the beginning and 178.3MB in the end (delta: -30.7MB). Peak memory consumption was 41.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.1s, 36 PlacesBefore, 31 PlacesAfterwards, 35 TransitionsBefore, 30 TransitionsAfterwards, 216 CoEnabledTransitionPairs, 1 FixpointIterations, 1 TrivialSequentialCompositions, 4 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 5 TotalNumberOfCompositions, 414 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 414, positive: 414, positive conditional: 0, positive unconditional: 414, 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: 112, positive: 112, positive conditional: 0, positive unconditional: 112, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 414, positive: 302, positive conditional: 0, positive unconditional: 302, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 112, unknown conditional: 0, unknown unconditional: 112] , Statistics on independence cache: Total cache size (in pairs): 48, Positive cache size: 48, Positive conditional cache size: 0, Positive unconditional cache size: 48, 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: 21]: 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 9 procedures, 40 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 2.1s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 100 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 100 mSDsluCounter, 2 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 310 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 495 IncrementalHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 2 mSDtfsCounter, 495 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 111 GetRequests, 91 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=97occurred in iteration=0, InterpolantAutomatonStates: 23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 202 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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 20:41:21,059 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...