/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/regression/example_multiple_interleavings.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-44898dd [2022-02-09 02:15:29,554 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-09 02:15:29,557 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-09 02:15:29,601 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-09 02:15:29,662 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2022-02-09 02:15:29,696 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-09 02:15:29,697 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-09 02:15:29,698 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-09 02:15:29,698 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-09 02:15:29,699 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-09 02:15:29,699 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-09 02:15:29,699 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-09 02:15:29,699 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-09 02:15:29,700 INFO L138 SettingsManager]: * Use SBE=true [2022-02-09 02:15:29,700 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-09 02:15:29,700 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-09 02:15:29,701 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-09 02:15:29,701 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-09 02:15:29,701 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-09 02:15:29,701 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-09 02:15:29,701 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-09 02:15:29,701 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-09 02:15:29,701 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-09 02:15:29,701 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-09 02:15:29,701 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-09 02:15:29,702 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-09 02:15:29,702 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-09 02:15:29,702 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-09 02:15:29,702 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-09 02:15:29,703 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-09 02:15:29,703 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-09 02:15:29,703 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-09 02:15:29,703 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-09 02:15:29,704 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-09 02:15:29,704 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-09 02:15:29,704 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-09 02:15:29,704 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-09 02:15:29,704 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-09 02:15:29,704 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-09 02:15:29,933 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-09 02:15:29,959 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-09 02:15:29,961 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-09 02:15:29,962 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-02-09 02:15:29,963 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-02-09 02:15:29,964 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/example_multiple_interleavings.bpl [2022-02-09 02:15:29,964 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/example_multiple_interleavings.bpl' [2022-02-09 02:15:29,987 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-09 02:15:29,988 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-09 02:15:29,990 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-09 02:15:29,990 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-09 02:15:29,990 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-09 02:15:30,000 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_multiple_interleavings.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 02:15:29" (1/1) ... [2022-02-09 02:15:30,008 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_multiple_interleavings.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 02:15:29" (1/1) ... [2022-02-09 02:15:30,015 INFO L137 Inliner]: procedures = 4, calls = 3, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-02-09 02:15:30,017 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-09 02:15:30,018 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-09 02:15:30,018 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-09 02:15:30,019 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-09 02:15:30,026 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_multiple_interleavings.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 02:15:29" (1/1) ... [2022-02-09 02:15:30,026 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_multiple_interleavings.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 02:15:29" (1/1) ... [2022-02-09 02:15:30,027 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_multiple_interleavings.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 02:15:29" (1/1) ... [2022-02-09 02:15:30,027 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_multiple_interleavings.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 02:15:29" (1/1) ... [2022-02-09 02:15:30,029 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_multiple_interleavings.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 02:15:29" (1/1) ... [2022-02-09 02:15:30,030 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_multiple_interleavings.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 02:15:29" (1/1) ... [2022-02-09 02:15:30,031 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_multiple_interleavings.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 02:15:29" (1/1) ... [2022-02-09 02:15:30,033 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-09 02:15:30,034 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-09 02:15:30,034 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-09 02:15:30,034 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-09 02:15:30,035 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_multiple_interleavings.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 02:15:29" (1/1) ... [2022-02-09 02:15:30,042 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-09 02:15:30,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 02:15:30,069 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-09 02:15:30,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-09 02:15:30,113 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_y given in one single declaration [2022-02-09 02:15:30,113 INFO L130 BoogieDeclarations]: Found specification of procedure set_y [2022-02-09 02:15:30,113 INFO L138 BoogieDeclarations]: Found implementation of procedure set_y [2022-02-09 02:15:30,113 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_x_1 given in one single declaration [2022-02-09 02:15:30,113 INFO L130 BoogieDeclarations]: Found specification of procedure set_x_1 [2022-02-09 02:15:30,114 INFO L138 BoogieDeclarations]: Found implementation of procedure set_x_1 [2022-02-09 02:15:30,114 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_x_0 given in one single declaration [2022-02-09 02:15:30,114 INFO L130 BoogieDeclarations]: Found specification of procedure set_x_0 [2022-02-09 02:15:30,114 INFO L138 BoogieDeclarations]: Found implementation of procedure set_x_0 [2022-02-09 02:15:30,114 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-02-09 02:15:30,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-09 02:15:30,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-09 02:15:30,119 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-02-09 02:15:30,154 INFO L234 CfgBuilder]: Building ICFG [2022-02-09 02:15:30,156 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-09 02:15:30,229 INFO L275 CfgBuilder]: Performing block encoding [2022-02-09 02:15:30,236 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-09 02:15:30,236 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-02-09 02:15:30,239 INFO L202 PluginConnector]: Adding new model example_multiple_interleavings.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.02 02:15:30 BoogieIcfgContainer [2022-02-09 02:15:30,239 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-09 02:15:30,241 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-09 02:15:30,241 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-09 02:15:30,244 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-09 02:15:30,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_multiple_interleavings.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 02:15:29" (1/2) ... [2022-02-09 02:15:30,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dd344aa and model type example_multiple_interleavings.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.02 02:15:30, skipping insertion in model container [2022-02-09 02:15:30,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_multiple_interleavings.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.02 02:15:30" (2/2) ... [2022-02-09 02:15:30,248 INFO L111 eAbstractionObserver]: Analyzing ICFG example_multiple_interleavings.bpl [2022-02-09 02:15:30,255 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-09 02:15:30,255 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-09 02:15:30,255 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-09 02:15:30,256 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-09 02:15:30,301 INFO L148 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2022-02-09 02:15:30,363 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-09 02:15:30,371 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mLazyFiniteAutomaton=false, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-02-09 02:15:30,371 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-02-09 02:15:30,382 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 28 places, 24 transitions, 90 flow [2022-02-09 02:15:30,414 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 78 states, 77 states have (on average 2.2337662337662336) internal successors, (172), 77 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 02:15:30,418 INFO L276 IsEmpty]: Start isEmpty. Operand has 78 states, 77 states have (on average 2.2337662337662336) internal successors, (172), 77 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 02:15:30,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-02-09 02:15:30,436 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 02:15:30,437 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 02:15:30,437 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 02:15:30,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 02:15:30,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1582327602, now seen corresponding path program 1 times [2022-02-09 02:15:30,451 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 02:15:30,452 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079371475] [2022-02-09 02:15:30,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 02:15:30,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 02:15:30,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 02:15:30,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 02:15:30,611 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 02:15:30,611 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079371475] [2022-02-09 02:15:30,612 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079371475] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-09 02:15:30,612 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-09 02:15:30,612 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-09 02:15:30,614 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274722352] [2022-02-09 02:15:30,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-09 02:15:30,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-09 02:15:30,618 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 02:15:30,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-09 02:15:30,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-09 02:15:30,654 INFO L87 Difference]: Start difference. First operand has 78 states, 77 states have (on average 2.2337662337662336) internal successors, (172), 77 states have internal predecessors, (172), 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 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 02:15:30,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 02:15:30,705 INFO L93 Difference]: Finished difference Result 63 states and 133 transitions. [2022-02-09 02:15:30,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-09 02:15:30,707 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 [2022-02-09 02:15:30,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 02:15:30,712 INFO L225 Difference]: With dead ends: 63 [2022-02-09 02:15:30,712 INFO L226 Difference]: Without dead ends: 63 [2022-02-09 02:15:30,714 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-09 02:15:30,731 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 9 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-09 02:15:30,733 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 15 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-09 02:15:30,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-02-09 02:15:30,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2022-02-09 02:15:30,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 2.1451612903225805) internal successors, (133), 62 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 02:15:30,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 133 transitions. [2022-02-09 02:15:30,790 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 133 transitions. Word has length 13 [2022-02-09 02:15:30,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 02:15:30,790 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 133 transitions. [2022-02-09 02:15:30,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 02:15:30,791 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 133 transitions. [2022-02-09 02:15:30,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-02-09 02:15:30,791 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 02:15:30,792 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 02:15:30,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-09 02:15:30,792 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 02:15:30,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 02:15:30,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1582326672, now seen corresponding path program 1 times [2022-02-09 02:15:30,793 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 02:15:30,793 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008125631] [2022-02-09 02:15:30,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 02:15:30,794 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 02:15:30,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 02:15:30,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 02:15:30,884 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 02:15:30,884 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008125631] [2022-02-09 02:15:30,884 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008125631] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-09 02:15:30,884 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-09 02:15:30,884 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-09 02:15:30,885 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391033800] [2022-02-09 02:15:30,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-09 02:15:30,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-09 02:15:30,886 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 02:15:30,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-09 02:15:30,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-02-09 02:15:30,887 INFO L87 Difference]: Start difference. First operand 63 states and 133 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 02:15:30,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 02:15:30,940 INFO L93 Difference]: Finished difference Result 121 states and 244 transitions. [2022-02-09 02:15:30,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-09 02:15:30,942 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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 [2022-02-09 02:15:30,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 02:15:30,944 INFO L225 Difference]: With dead ends: 121 [2022-02-09 02:15:30,944 INFO L226 Difference]: Without dead ends: 89 [2022-02-09 02:15:30,945 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-02-09 02:15:30,946 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 15 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-09 02:15:30,947 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 20 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-09 02:15:30,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-02-09 02:15:30,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 63. [2022-02-09 02:15:30,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 2.064516129032258) internal successors, (128), 62 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 02:15:30,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 128 transitions. [2022-02-09 02:15:30,955 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 128 transitions. Word has length 13 [2022-02-09 02:15:30,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 02:15:30,956 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 128 transitions. [2022-02-09 02:15:30,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 02:15:30,956 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 128 transitions. [2022-02-09 02:15:30,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-02-09 02:15:30,957 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 02:15:30,957 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 02:15:30,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-09 02:15:30,958 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 02:15:30,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 02:15:30,958 INFO L85 PathProgramCache]: Analyzing trace with hash 674716626, now seen corresponding path program 2 times [2022-02-09 02:15:30,959 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 02:15:30,959 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642511938] [2022-02-09 02:15:30,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 02:15:30,959 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 02:15:30,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 02:15:30,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 02:15:30,989 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 02:15:30,989 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642511938] [2022-02-09 02:15:30,989 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642511938] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-09 02:15:30,989 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-09 02:15:30,990 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-09 02:15:30,990 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153546143] [2022-02-09 02:15:30,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-09 02:15:30,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-09 02:15:30,990 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 02:15:30,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-09 02:15:30,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-02-09 02:15:30,991 INFO L87 Difference]: Start difference. First operand 63 states and 128 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 02:15:31,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 02:15:31,021 INFO L93 Difference]: Finished difference Result 88 states and 175 transitions. [2022-02-09 02:15:31,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-09 02:15:31,021 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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 [2022-02-09 02:15:31,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 02:15:31,022 INFO L225 Difference]: With dead ends: 88 [2022-02-09 02:15:31,022 INFO L226 Difference]: Without dead ends: 56 [2022-02-09 02:15:31,023 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-02-09 02:15:31,024 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 18 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-09 02:15:31,024 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 21 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-09 02:15:31,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-02-09 02:15:31,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 50. [2022-02-09 02:15:31,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 2.020408163265306) internal successors, (99), 49 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 02:15:31,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 99 transitions. [2022-02-09 02:15:31,031 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 99 transitions. Word has length 13 [2022-02-09 02:15:31,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 02:15:31,031 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 99 transitions. [2022-02-09 02:15:31,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 02:15:31,031 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 99 transitions. [2022-02-09 02:15:31,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-02-09 02:15:31,032 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 02:15:31,032 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 02:15:31,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-09 02:15:31,033 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 02:15:31,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 02:15:31,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1208766478, now seen corresponding path program 3 times [2022-02-09 02:15:31,033 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 02:15:31,034 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743710101] [2022-02-09 02:15:31,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 02:15:31,034 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 02:15:31,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 02:15:31,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 02:15:31,061 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 02:15:31,062 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743710101] [2022-02-09 02:15:31,062 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743710101] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-09 02:15:31,062 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-09 02:15:31,062 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-09 02:15:31,062 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923300710] [2022-02-09 02:15:31,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-09 02:15:31,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-09 02:15:31,063 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 02:15:31,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-09 02:15:31,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-02-09 02:15:31,064 INFO L87 Difference]: Start difference. First operand 50 states and 99 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 02:15:31,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 02:15:31,089 INFO L93 Difference]: Finished difference Result 69 states and 133 transitions. [2022-02-09 02:15:31,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-09 02:15:31,089 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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 [2022-02-09 02:15:31,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 02:15:31,090 INFO L225 Difference]: With dead ends: 69 [2022-02-09 02:15:31,090 INFO L226 Difference]: Without dead ends: 37 [2022-02-09 02:15:31,090 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-02-09 02:15:31,092 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 15 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-09 02:15:31,092 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 17 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-09 02:15:31,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-02-09 02:15:31,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2022-02-09 02:15:31,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.8055555555555556) internal successors, (65), 36 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 02:15:31,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 65 transitions. [2022-02-09 02:15:31,097 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 65 transitions. Word has length 13 [2022-02-09 02:15:31,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 02:15:31,097 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 65 transitions. [2022-02-09 02:15:31,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 02:15:31,098 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 65 transitions. [2022-02-09 02:15:31,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-02-09 02:15:31,098 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 02:15:31,099 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 02:15:31,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-02-09 02:15:31,099 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 02:15:31,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 02:15:31,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1449708848, now seen corresponding path program 1 times [2022-02-09 02:15:31,100 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 02:15:31,100 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843873155] [2022-02-09 02:15:31,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 02:15:31,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 02:15:31,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 02:15:31,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 02:15:31,117 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 02:15:31,118 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843873155] [2022-02-09 02:15:31,118 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843873155] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-09 02:15:31,118 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-09 02:15:31,118 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-09 02:15:31,118 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767110067] [2022-02-09 02:15:31,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-09 02:15:31,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-09 02:15:31,119 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 02:15:31,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-09 02:15:31,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-09 02:15:31,120 INFO L87 Difference]: Start difference. First operand 37 states and 65 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 02:15:31,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 02:15:31,128 INFO L93 Difference]: Finished difference Result 30 states and 48 transitions. [2022-02-09 02:15:31,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-09 02:15:31,128 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 [2022-02-09 02:15:31,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 02:15:31,129 INFO L225 Difference]: With dead ends: 30 [2022-02-09 02:15:31,129 INFO L226 Difference]: Without dead ends: 30 [2022-02-09 02:15:31,129 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-09 02:15:31,131 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 8 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-09 02:15:31,131 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 7 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-09 02:15:31,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-02-09 02:15:31,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-02-09 02:15:31,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.6551724137931034) internal successors, (48), 29 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 02:15:31,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 48 transitions. [2022-02-09 02:15:31,135 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 48 transitions. Word has length 13 [2022-02-09 02:15:31,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 02:15:31,135 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 48 transitions. [2022-02-09 02:15:31,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 02:15:31,136 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 48 transitions. [2022-02-09 02:15:31,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-02-09 02:15:31,136 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 02:15:31,136 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 02:15:31,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-02-09 02:15:31,137 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 02:15:31,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 02:15:31,137 INFO L85 PathProgramCache]: Analyzing trace with hash -789510234, now seen corresponding path program 4 times [2022-02-09 02:15:31,138 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 02:15:31,138 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450200844] [2022-02-09 02:15:31,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 02:15:31,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 02:15:31,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 02:15:31,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 02:15:31,165 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 02:15:31,165 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450200844] [2022-02-09 02:15:31,165 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450200844] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-09 02:15:31,165 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-09 02:15:31,166 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-09 02:15:31,166 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548051023] [2022-02-09 02:15:31,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-09 02:15:31,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-09 02:15:31,166 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 02:15:31,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-09 02:15:31,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-02-09 02:15:31,167 INFO L87 Difference]: Start difference. First operand 30 states and 48 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 02:15:31,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 02:15:31,181 INFO L93 Difference]: Finished difference Result 29 states and 47 transitions. [2022-02-09 02:15:31,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-09 02:15:31,181 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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 [2022-02-09 02:15:31,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 02:15:31,181 INFO L225 Difference]: With dead ends: 29 [2022-02-09 02:15:31,182 INFO L226 Difference]: Without dead ends: 0 [2022-02-09 02:15:31,182 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-02-09 02:15:31,183 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 9 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-09 02:15:31,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 14 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-09 02:15:31,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-02-09 02:15:31,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-02-09 02:15:31,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 02:15:31,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-02-09 02:15:31,184 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2022-02-09 02:15:31,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 02:15:31,185 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-02-09 02:15:31,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 02:15:31,185 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-02-09 02:15:31,185 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-09 02:15:31,187 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (3 of 4 remaining) [2022-02-09 02:15:31,188 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2022-02-09 02:15:31,188 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2022-02-09 02:15:31,188 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2022-02-09 02:15:31,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-02-09 02:15:31,191 INFO L732 BasicCegarLoop]: Path program histogram: [4, 1, 1] [2022-02-09 02:15:31,193 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-02-09 02:15:31,193 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-09 02:15:31,195 INFO L202 PluginConnector]: Adding new model example_multiple_interleavings.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.02 02:15:31 BasicIcfg [2022-02-09 02:15:31,195 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-09 02:15:31,196 INFO L158 Benchmark]: Toolchain (without parser) took 1207.68ms. Allocated memory was 182.5MB in the beginning and 277.9MB in the end (delta: 95.4MB). Free memory was 144.8MB in the beginning and 226.1MB in the end (delta: -81.3MB). Peak memory consumption was 13.4MB. Max. memory is 8.0GB. [2022-02-09 02:15:31,196 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.12ms. Allocated memory is still 182.5MB. Free memory is still 145.8MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-09 02:15:31,197 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.82ms. Allocated memory is still 182.5MB. Free memory was 144.7MB in the beginning and 143.3MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-09 02:15:31,197 INFO L158 Benchmark]: Boogie Preprocessor took 14.38ms. Allocated memory is still 182.5MB. Free memory was 143.2MB in the beginning and 142.3MB in the end (delta: 826.4kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-09 02:15:31,197 INFO L158 Benchmark]: RCFGBuilder took 205.59ms. Allocated memory is still 182.5MB. Free memory was 142.3MB in the beginning and 134.0MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2022-02-09 02:15:31,198 INFO L158 Benchmark]: TraceAbstraction took 954.39ms. Allocated memory was 182.5MB in the beginning and 277.9MB in the end (delta: 95.4MB). Free memory was 133.5MB in the beginning and 226.1MB in the end (delta: -92.6MB). Peak memory consumption was 1.8MB. Max. memory is 8.0GB. [2022-02-09 02:15:31,199 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 0.12ms. Allocated memory is still 182.5MB. Free memory is still 145.8MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 27.82ms. Allocated memory is still 182.5MB. Free memory was 144.7MB in the beginning and 143.3MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 14.38ms. Allocated memory is still 182.5MB. Free memory was 143.2MB in the beginning and 142.3MB in the end (delta: 826.4kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 205.59ms. Allocated memory is still 182.5MB. Free memory was 142.3MB in the beginning and 134.0MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * TraceAbstraction took 954.39ms. Allocated memory was 182.5MB in the beginning and 277.9MB in the end (delta: 95.4MB). Free memory was 133.5MB in the beginning and 226.1MB in the end (delta: -92.6MB). Peak memory consumption was 1.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 19]: 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 7 procedures, 31 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 74 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 74 mSDsluCounter, 94 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 70 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 122 IncrementalHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 66 mSDtfsCounter, 122 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=78occurred in iteration=0, InterpolantAutomatonStates: 22, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 32 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 78 NumberOfCodeBlocks, 78 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 72 ConstructedInterpolants, 0 QuantifiedInterpolants, 248 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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! [2022-02-09 02:15:31,230 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...