/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/bench/exp2x6.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-4b0ab11 [2022-03-03 18:53:26,309 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-03 18:53:26,311 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-03 18:53:26,329 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-03 18:53:26,355 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-03 18:53:26,356 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-03 18:53:26,356 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-03 18:53:26,357 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 [2022-03-03 18:53:26,374 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-03 18:53:26,374 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-03 18:53:26,375 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-03 18:53:26,375 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-03 18:53:26,375 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-03 18:53:26,376 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-03 18:53:26,376 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-03 18:53:26,376 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-03 18:53:26,376 INFO L138 SettingsManager]: * Use SBE=true [2022-03-03 18:53:26,376 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-03 18:53:26,377 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-03 18:53:26,377 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-03 18:53:26,377 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-03 18:53:26,377 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-03 18:53:26,377 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-03 18:53:26,377 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-03 18:53:26,377 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-03 18:53:26,377 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-03 18:53:26,378 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-03 18:53:26,378 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-03 18:53:26,378 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-03 18:53:26,378 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-03 18:53:26,378 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-03 18:53:26,378 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-03 18:53:26,378 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-03 18:53:26,378 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-03 18:53:26,379 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-03 18:53:26,379 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-03 18:53:26,379 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-03 18:53:26,379 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-03 18:53:26,379 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-03 18:53:26,379 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-03 18:53:26,379 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-03 18:53:26,379 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-03 18:53:26,520 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-03 18:53:26,533 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-03 18:53:26,534 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-03 18:53:26,535 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-03-03 18:53:26,535 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-03-03 18:53:26,536 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/bench/exp2x6.wvr.bpl [2022-03-03 18:53:26,536 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/bench/exp2x6.wvr.bpl' [2022-03-03 18:53:26,558 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-03 18:53:26,559 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-03 18:53:26,560 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-03 18:53:26,560 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-03 18:53:26,560 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-03 18:53:26,568 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 06:53:26" (1/1) ... [2022-03-03 18:53:26,572 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 06:53:26" (1/1) ... [2022-03-03 18:53:26,580 INFO L137 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-03-03 18:53:26,581 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-03 18:53:26,581 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-03 18:53:26,581 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-03 18:53:26,582 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-03 18:53:26,586 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 06:53:26" (1/1) ... [2022-03-03 18:53:26,586 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 06:53:26" (1/1) ... [2022-03-03 18:53:26,588 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 06:53:26" (1/1) ... [2022-03-03 18:53:26,589 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 06:53:26" (1/1) ... [2022-03-03 18:53:26,590 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 06:53:26" (1/1) ... [2022-03-03 18:53:26,592 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 06:53:26" (1/1) ... [2022-03-03 18:53:26,592 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 06:53:26" (1/1) ... [2022-03-03 18:53:26,593 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-03 18:53:26,594 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-03 18:53:26,594 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-03 18:53:26,594 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-03 18:53:26,603 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 06:53:26" (1/1) ... [2022-03-03 18:53:26,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-03 18:53:26,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:53:26,636 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) [2022-03-03 18:53:26,642 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 [2022-03-03 18:53:26,663 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-03-03 18:53:26,663 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-03 18:53:26,663 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-03 18:53:26,663 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-03-03 18:53:26,663 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-03 18:53:26,664 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-03 18:53:26,664 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-03-03 18:53:26,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-03 18:53:26,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-03 18:53:26,664 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2022-03-03 18:53:26,664 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-03-03 18:53:26,664 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-03-03 18:53:26,664 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2022-03-03 18:53:26,664 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-03-03 18:53:26,664 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-03-03 18:53:26,665 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-03 18:53:26,695 INFO L234 CfgBuilder]: Building ICFG [2022-03-03 18:53:26,696 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-03 18:53:26,771 INFO L275 CfgBuilder]: Performing block encoding [2022-03-03 18:53:26,776 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-03 18:53:26,776 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-03-03 18:53:26,777 INFO L202 PluginConnector]: Adding new model exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.03 06:53:26 BoogieIcfgContainer [2022-03-03 18:53:26,777 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-03 18:53:26,778 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-03 18:53:26,778 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-03 18:53:26,780 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-03 18:53:26,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 06:53:26" (1/2) ... [2022-03-03 18:53:26,781 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7362cc85 and model type exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 06:53:26, skipping insertion in model container [2022-03-03 18:53:26,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.03 06:53:26" (2/2) ... [2022-03-03 18:53:26,782 INFO L111 eAbstractionObserver]: Analyzing ICFG exp2x6.wvr.bpl [2022-03-03 18:53:26,785 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-03 18:53:26,785 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-03 18:53:26,786 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-03 18:53:26,786 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-03 18:53:26,817 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-03-03 18:53:26,887 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-03 18:53:26,891 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, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-03-03 18:53:26,892 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-03-03 18:53:26,909 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 54 places, 45 transitions, 122 flow [2022-03-03 18:53:27,073 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 3204 states, 3203 states have (on average 3.9572275991258197) internal successors, (12675), 3203 states have internal predecessors, (12675), 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) [2022-03-03 18:53:27,084 INFO L276 IsEmpty]: Start isEmpty. Operand has 3204 states, 3203 states have (on average 3.9572275991258197) internal successors, (12675), 3203 states have internal predecessors, (12675), 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) [2022-03-03 18:53:27,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 18:53:27,115 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:53:27,116 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:53:27,117 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-03 18:53:27,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:53:27,126 INFO L85 PathProgramCache]: Analyzing trace with hash 450232179, now seen corresponding path program 1 times [2022-03-03 18:53:27,132 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:53:27,133 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885160544] [2022-03-03 18:53:27,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:53:27,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:53:27,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:53:27,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:53:27,268 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:53:27,268 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885160544] [2022-03-03 18:53:27,269 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885160544] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:53:27,269 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:53:27,269 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-03 18:53:27,270 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079756483] [2022-03-03 18:53:27,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:53:27,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-03 18:53:27,273 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:53:27,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-03 18:53:27,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-03 18:53:27,301 INFO L87 Difference]: Start difference. First operand has 3204 states, 3203 states have (on average 3.9572275991258197) internal successors, (12675), 3203 states have internal predecessors, (12675), 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 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 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) [2022-03-03 18:53:27,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:53:27,442 INFO L93 Difference]: Finished difference Result 3629 states and 14324 transitions. [2022-03-03 18:53:27,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-03 18:53:27,444 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 18:53:27,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:53:27,486 INFO L225 Difference]: With dead ends: 3629 [2022-03-03 18:53:27,486 INFO L226 Difference]: Without dead ends: 3598 [2022-03-03 18:53:27,487 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-03 18:53:27,493 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 4 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 18:53:27,495 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 24 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 18:53:27,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3598 states. [2022-03-03 18:53:27,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3598 to 3333. [2022-03-03 18:53:27,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3333 states, 3332 states have (on average 3.952280912364946) internal successors, (13169), 3332 states have internal predecessors, (13169), 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) [2022-03-03 18:53:27,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3333 states to 3333 states and 13169 transitions. [2022-03-03 18:53:27,779 INFO L78 Accepts]: Start accepts. Automaton has 3333 states and 13169 transitions. Word has length 19 [2022-03-03 18:53:27,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:53:27,780 INFO L470 AbstractCegarLoop]: Abstraction has 3333 states and 13169 transitions. [2022-03-03 18:53:27,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 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) [2022-03-03 18:53:27,781 INFO L276 IsEmpty]: Start isEmpty. Operand 3333 states and 13169 transitions. [2022-03-03 18:53:27,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-03-03 18:53:27,792 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:53:27,792 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:53:27,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-03 18:53:27,793 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-03 18:53:27,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:53:27,795 INFO L85 PathProgramCache]: Analyzing trace with hash -524256119, now seen corresponding path program 1 times [2022-03-03 18:53:27,796 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:53:27,796 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926635531] [2022-03-03 18:53:27,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:53:27,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:53:27,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:53:27,899 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:53:27,900 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:53:27,900 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926635531] [2022-03-03 18:53:27,900 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926635531] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:53:27,900 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119459845] [2022-03-03 18:53:27,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:53:27,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:53:27,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:53:27,948 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:53:27,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-03 18:53:27,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:53:27,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 3 conjunts are in the unsatisfiable core [2022-03-03 18:53:27,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:53:28,084 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:53:28,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:53:28,165 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:53:28,165 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2119459845] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:53:28,165 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:53:28,165 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 5 [2022-03-03 18:53:28,166 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248494889] [2022-03-03 18:53:28,166 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:53:28,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-03 18:53:28,167 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:53:28,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-03 18:53:28,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-03-03 18:53:28,167 INFO L87 Difference]: Start difference. First operand 3333 states and 13169 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 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) [2022-03-03 18:53:28,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:53:28,328 INFO L93 Difference]: Finished difference Result 6205 states and 23911 transitions. [2022-03-03 18:53:28,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-03 18:53:28,329 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 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 24 [2022-03-03 18:53:28,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:53:28,392 INFO L225 Difference]: With dead ends: 6205 [2022-03-03 18:53:28,392 INFO L226 Difference]: Without dead ends: 6205 [2022-03-03 18:53:28,393 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-03-03 18:53:28,397 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 105 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 18:53:28,397 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 121 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 18:53:28,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6205 states. [2022-03-03 18:53:28,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6205 to 3838. [2022-03-03 18:53:28,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3838 states, 3837 states have (on average 3.988272087568413) internal successors, (15303), 3837 states have internal predecessors, (15303), 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) [2022-03-03 18:53:28,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3838 states to 3838 states and 15303 transitions. [2022-03-03 18:53:28,535 INFO L78 Accepts]: Start accepts. Automaton has 3838 states and 15303 transitions. Word has length 24 [2022-03-03 18:53:28,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:53:28,536 INFO L470 AbstractCegarLoop]: Abstraction has 3838 states and 15303 transitions. [2022-03-03 18:53:28,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 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) [2022-03-03 18:53:28,537 INFO L276 IsEmpty]: Start isEmpty. Operand 3838 states and 15303 transitions. [2022-03-03 18:53:28,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-03-03 18:53:28,549 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:53:28,550 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:53:28,567 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-03 18:53:28,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:53:28,767 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-03 18:53:28,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:53:28,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1859792702, now seen corresponding path program 1 times [2022-03-03 18:53:28,768 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:53:28,768 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941528213] [2022-03-03 18:53:28,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:53:28,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:53:28,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:53:28,797 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:53:28,797 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:53:28,797 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941528213] [2022-03-03 18:53:28,797 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941528213] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:53:28,798 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:53:28,798 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-03 18:53:28,798 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41906443] [2022-03-03 18:53:28,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:53:28,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-03 18:53:28,798 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:53:28,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-03 18:53:28,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-03-03 18:53:28,799 INFO L87 Difference]: Start difference. First operand 3838 states and 15303 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2022-03-03 18:53:28,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:53:28,905 INFO L93 Difference]: Finished difference Result 4614 states and 17875 transitions. [2022-03-03 18:53:28,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-03 18:53:28,906 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 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 24 [2022-03-03 18:53:28,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:53:28,940 INFO L225 Difference]: With dead ends: 4614 [2022-03-03 18:53:28,940 INFO L226 Difference]: Without dead ends: 4594 [2022-03-03 18:53:28,942 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-03-03 18:53:28,944 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 52 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 18:53:28,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 61 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 18:53:28,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4594 states. [2022-03-03 18:53:29,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4594 to 4099. [2022-03-03 18:53:29,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4099 states, 4098 states have (on average 3.9487554904831623) internal successors, (16182), 4098 states have internal predecessors, (16182), 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) [2022-03-03 18:53:29,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4099 states to 4099 states and 16182 transitions. [2022-03-03 18:53:29,046 INFO L78 Accepts]: Start accepts. Automaton has 4099 states and 16182 transitions. Word has length 24 [2022-03-03 18:53:29,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:53:29,047 INFO L470 AbstractCegarLoop]: Abstraction has 4099 states and 16182 transitions. [2022-03-03 18:53:29,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2022-03-03 18:53:29,047 INFO L276 IsEmpty]: Start isEmpty. Operand 4099 states and 16182 transitions. [2022-03-03 18:53:29,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-03-03 18:53:29,057 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:53:29,057 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:53:29,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-03 18:53:29,058 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-03 18:53:29,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:53:29,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1974963633, now seen corresponding path program 1 times [2022-03-03 18:53:29,064 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:53:29,064 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661664102] [2022-03-03 18:53:29,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:53:29,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:53:29,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:53:29,110 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:53:29,110 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:53:29,110 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661664102] [2022-03-03 18:53:29,110 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661664102] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:53:29,110 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984356766] [2022-03-03 18:53:29,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:53:29,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:53:29,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:53:29,112 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:53:29,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-03 18:53:29,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:53:29,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 3 conjunts are in the unsatisfiable core [2022-03-03 18:53:29,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:53:29,198 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:53:29,198 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:53:29,284 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:53:29,284 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1984356766] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:53:29,284 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:53:29,284 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 5 [2022-03-03 18:53:29,284 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189929991] [2022-03-03 18:53:29,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:53:29,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-03 18:53:29,285 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:53:29,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-03 18:53:29,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-03-03 18:53:29,285 INFO L87 Difference]: Start difference. First operand 4099 states and 16182 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:53:29,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:53:29,397 INFO L93 Difference]: Finished difference Result 7064 states and 27253 transitions. [2022-03-03 18:53:29,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-03 18:53:29,398 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-03-03 18:53:29,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:53:29,424 INFO L225 Difference]: With dead ends: 7064 [2022-03-03 18:53:29,424 INFO L226 Difference]: Without dead ends: 7064 [2022-03-03 18:53:29,424 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-03-03 18:53:29,425 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 108 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 18:53:29,425 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 125 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 18:53:29,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7064 states. [2022-03-03 18:53:29,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7064 to 4827. [2022-03-03 18:53:29,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4827 states, 4826 states have (on average 3.999171156237049) internal successors, (19300), 4826 states have internal predecessors, (19300), 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) [2022-03-03 18:53:29,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4827 states to 4827 states and 19300 transitions. [2022-03-03 18:53:29,617 INFO L78 Accepts]: Start accepts. Automaton has 4827 states and 19300 transitions. Word has length 24 [2022-03-03 18:53:29,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:53:29,618 INFO L470 AbstractCegarLoop]: Abstraction has 4827 states and 19300 transitions. [2022-03-03 18:53:29,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:53:29,618 INFO L276 IsEmpty]: Start isEmpty. Operand 4827 states and 19300 transitions. [2022-03-03 18:53:29,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-03-03 18:53:29,630 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:53:29,631 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:53:29,663 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-03 18:53:29,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-03-03 18:53:29,848 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-03 18:53:29,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:53:29,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1076479876, now seen corresponding path program 1 times [2022-03-03 18:53:29,848 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:53:29,848 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643947284] [2022-03-03 18:53:29,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:53:29,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:53:29,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:53:29,877 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:53:29,877 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:53:29,877 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643947284] [2022-03-03 18:53:29,878 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643947284] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:53:29,878 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:53:29,878 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-03 18:53:29,878 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645469458] [2022-03-03 18:53:29,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:53:29,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-03 18:53:29,878 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:53:29,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-03 18:53:29,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-03-03 18:53:29,879 INFO L87 Difference]: Start difference. First operand 4827 states and 19300 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2022-03-03 18:53:29,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:53:29,942 INFO L93 Difference]: Finished difference Result 5633 states and 21970 transitions. [2022-03-03 18:53:29,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-03 18:53:29,942 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 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 24 [2022-03-03 18:53:29,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:53:29,961 INFO L225 Difference]: With dead ends: 5633 [2022-03-03 18:53:29,962 INFO L226 Difference]: Without dead ends: 5568 [2022-03-03 18:53:29,963 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-03-03 18:53:29,963 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 46 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 18:53:29,964 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 63 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 18:53:29,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5568 states. [2022-03-03 18:53:30,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5568 to 5161. [2022-03-03 18:53:30,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5161 states, 5160 states have (on average 3.9622093023255816) internal successors, (20445), 5160 states have internal predecessors, (20445), 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) [2022-03-03 18:53:30,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5161 states to 5161 states and 20445 transitions. [2022-03-03 18:53:30,140 INFO L78 Accepts]: Start accepts. Automaton has 5161 states and 20445 transitions. Word has length 24 [2022-03-03 18:53:30,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:53:30,140 INFO L470 AbstractCegarLoop]: Abstraction has 5161 states and 20445 transitions. [2022-03-03 18:53:30,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2022-03-03 18:53:30,140 INFO L276 IsEmpty]: Start isEmpty. Operand 5161 states and 20445 transitions. [2022-03-03 18:53:30,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-03-03 18:53:30,157 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:53:30,157 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:53:30,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-03 18:53:30,159 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-03 18:53:30,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:53:30,159 INFO L85 PathProgramCache]: Analyzing trace with hash 50378376, now seen corresponding path program 2 times [2022-03-03 18:53:30,159 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:53:30,159 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253886388] [2022-03-03 18:53:30,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:53:30,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:53:30,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:53:30,195 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:53:30,196 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:53:30,196 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253886388] [2022-03-03 18:53:30,196 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253886388] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:53:30,196 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:53:30,196 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-03 18:53:30,196 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868154245] [2022-03-03 18:53:30,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:53:30,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-03 18:53:30,196 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:53:30,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-03 18:53:30,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-03 18:53:30,197 INFO L87 Difference]: Start difference. First operand 5161 states and 20445 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 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) [2022-03-03 18:53:30,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:53:30,288 INFO L93 Difference]: Finished difference Result 6066 states and 23776 transitions. [2022-03-03 18:53:30,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-03 18:53:30,289 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 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 24 [2022-03-03 18:53:30,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:53:30,308 INFO L225 Difference]: With dead ends: 6066 [2022-03-03 18:53:30,308 INFO L226 Difference]: Without dead ends: 6066 [2022-03-03 18:53:30,309 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-03 18:53:30,309 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 63 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 18:53:30,309 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 89 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 18:53:30,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6066 states. [2022-03-03 18:53:30,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6066 to 5526. [2022-03-03 18:53:30,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5526 states, 5525 states have (on average 3.9632579185520362) internal successors, (21897), 5525 states have internal predecessors, (21897), 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) [2022-03-03 18:53:30,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5526 states to 5526 states and 21897 transitions. [2022-03-03 18:53:30,526 INFO L78 Accepts]: Start accepts. Automaton has 5526 states and 21897 transitions. Word has length 24 [2022-03-03 18:53:30,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:53:30,527 INFO L470 AbstractCegarLoop]: Abstraction has 5526 states and 21897 transitions. [2022-03-03 18:53:30,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 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) [2022-03-03 18:53:30,527 INFO L276 IsEmpty]: Start isEmpty. Operand 5526 states and 21897 transitions. [2022-03-03 18:53:30,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-03-03 18:53:30,539 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:53:30,539 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:53:30,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-03 18:53:30,539 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-03 18:53:30,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:53:30,539 INFO L85 PathProgramCache]: Analyzing trace with hash -19268542, now seen corresponding path program 2 times [2022-03-03 18:53:30,540 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:53:30,540 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712210366] [2022-03-03 18:53:30,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:53:30,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:53:30,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:53:30,563 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:53:30,563 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:53:30,563 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712210366] [2022-03-03 18:53:30,563 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712210366] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:53:30,564 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:53:30,564 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-03 18:53:30,564 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261065713] [2022-03-03 18:53:30,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:53:30,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-03 18:53:30,564 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:53:30,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-03 18:53:30,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-03 18:53:30,564 INFO L87 Difference]: Start difference. First operand 5526 states and 21897 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 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) [2022-03-03 18:53:30,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:53:30,646 INFO L93 Difference]: Finished difference Result 6785 states and 26493 transitions. [2022-03-03 18:53:30,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-03 18:53:30,646 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 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 24 [2022-03-03 18:53:30,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:53:30,667 INFO L225 Difference]: With dead ends: 6785 [2022-03-03 18:53:30,667 INFO L226 Difference]: Without dead ends: 6785 [2022-03-03 18:53:30,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-03 18:53:30,668 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 85 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 18:53:30,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 82 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 18:53:30,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6785 states. [2022-03-03 18:53:30,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6785 to 6067. [2022-03-03 18:53:30,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6067 states, 6066 states have (on average 3.9658753709198815) internal successors, (24057), 6066 states have internal predecessors, (24057), 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) [2022-03-03 18:53:30,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6067 states to 6067 states and 24057 transitions. [2022-03-03 18:53:30,807 INFO L78 Accepts]: Start accepts. Automaton has 6067 states and 24057 transitions. Word has length 24 [2022-03-03 18:53:30,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:53:30,808 INFO L470 AbstractCegarLoop]: Abstraction has 6067 states and 24057 transitions. [2022-03-03 18:53:30,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 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) [2022-03-03 18:53:30,808 INFO L276 IsEmpty]: Start isEmpty. Operand 6067 states and 24057 transitions. [2022-03-03 18:53:30,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-03 18:53:30,822 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:53:30,822 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:53:30,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-03-03 18:53:30,822 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-03 18:53:30,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:53:30,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1048604648, now seen corresponding path program 1 times [2022-03-03 18:53:30,823 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:53:30,823 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040735902] [2022-03-03 18:53:30,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:53:30,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:53:30,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:53:30,980 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:53:30,980 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:53:30,980 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040735902] [2022-03-03 18:53:30,980 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040735902] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:53:30,980 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876985332] [2022-03-03 18:53:30,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:53:30,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:53:30,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:53:30,996 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:53:31,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-03 18:53:31,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:53:31,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 21 conjunts are in the unsatisfiable core [2022-03-03 18:53:31,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:53:31,812 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:53:31,812 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:53:31,946 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:53:31,947 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [876985332] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:53:31,947 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:53:31,947 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 6] total 10 [2022-03-03 18:53:31,947 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494094688] [2022-03-03 18:53:31,947 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:53:31,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-03 18:53:31,947 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:53:31,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-03 18:53:31,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-03-03 18:53:31,948 INFO L87 Difference]: Start difference. First operand 6067 states and 24057 transitions. Second operand has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 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) [2022-03-03 18:53:32,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:53:32,719 INFO L93 Difference]: Finished difference Result 8499 states and 32997 transitions. [2022-03-03 18:53:32,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-03 18:53:32,719 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 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 29 [2022-03-03 18:53:32,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:53:32,753 INFO L225 Difference]: With dead ends: 8499 [2022-03-03 18:53:32,753 INFO L226 Difference]: Without dead ends: 8363 [2022-03-03 18:53:32,753 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 45 SyntacticMatches, 12 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-03-03 18:53:32,754 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 124 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 1363 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 1412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 18:53:32,754 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 242 Invalid, 1412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1363 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 18:53:32,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8363 states. [2022-03-03 18:53:32,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8363 to 6744. [2022-03-03 18:53:32,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6744 states, 6743 states have (on average 3.9549162094023433) internal successors, (26668), 6743 states have internal predecessors, (26668), 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) [2022-03-03 18:53:32,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6744 states to 6744 states and 26668 transitions. [2022-03-03 18:53:32,950 INFO L78 Accepts]: Start accepts. Automaton has 6744 states and 26668 transitions. Word has length 29 [2022-03-03 18:53:32,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:53:32,951 INFO L470 AbstractCegarLoop]: Abstraction has 6744 states and 26668 transitions. [2022-03-03 18:53:32,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 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) [2022-03-03 18:53:32,951 INFO L276 IsEmpty]: Start isEmpty. Operand 6744 states and 26668 transitions. [2022-03-03 18:53:32,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-03 18:53:32,967 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:53:32,967 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:53:32,986 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-03 18:53:33,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:53:33,186 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-03 18:53:33,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:53:33,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1458786176, now seen corresponding path program 2 times [2022-03-03 18:53:33,186 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:53:33,186 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476949549] [2022-03-03 18:53:33,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:53:33,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:53:33,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:53:33,277 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 18:53:33,277 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:53:33,277 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476949549] [2022-03-03 18:53:33,278 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476949549] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:53:33,278 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [128873422] [2022-03-03 18:53:33,278 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 18:53:33,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:53:33,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:53:33,279 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:53:33,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-03 18:53:33,328 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 18:53:33,329 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:53:33,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 21 conjunts are in the unsatisfiable core [2022-03-03 18:53:33,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:53:34,149 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:53:34,149 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:53:34,265 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 18:53:34,266 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [128873422] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:53:34,266 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:53:34,266 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 6] total 11 [2022-03-03 18:53:34,266 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859640129] [2022-03-03 18:53:34,266 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:53:34,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-03 18:53:34,266 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:53:34,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-03 18:53:34,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-03-03 18:53:34,267 INFO L87 Difference]: Start difference. First operand 6744 states and 26668 transitions. Second operand has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 11 states have internal predecessors, (49), 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) [2022-03-03 18:53:35,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:53:35,431 INFO L93 Difference]: Finished difference Result 10094 states and 39061 transitions. [2022-03-03 18:53:35,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-03 18:53:35,432 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 11 states have internal predecessors, (49), 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 29 [2022-03-03 18:53:35,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:53:35,460 INFO L225 Difference]: With dead ends: 10094 [2022-03-03 18:53:35,460 INFO L226 Difference]: Without dead ends: 9890 [2022-03-03 18:53:35,460 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 43 SyntacticMatches, 13 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-03-03 18:53:35,461 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 144 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 1603 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 1659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-03 18:53:35,461 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 279 Invalid, 1659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1603 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-03 18:53:35,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9890 states. [2022-03-03 18:53:35,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9890 to 7521. [2022-03-03 18:53:35,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7521 states, 7520 states have (on average 3.9558510638297872) internal successors, (29748), 7520 states have internal predecessors, (29748), 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) [2022-03-03 18:53:35,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7521 states to 7521 states and 29748 transitions. [2022-03-03 18:53:35,626 INFO L78 Accepts]: Start accepts. Automaton has 7521 states and 29748 transitions. Word has length 29 [2022-03-03 18:53:35,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:53:35,626 INFO L470 AbstractCegarLoop]: Abstraction has 7521 states and 29748 transitions. [2022-03-03 18:53:35,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 11 states have internal predecessors, (49), 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) [2022-03-03 18:53:35,627 INFO L276 IsEmpty]: Start isEmpty. Operand 7521 states and 29748 transitions. [2022-03-03 18:53:35,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-03 18:53:35,644 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:53:35,644 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:53:35,663 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-03 18:53:35,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:53:35,851 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-03 18:53:35,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:53:35,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1515297138, now seen corresponding path program 3 times [2022-03-03 18:53:35,852 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:53:35,852 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796413657] [2022-03-03 18:53:35,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:53:35,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:53:35,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:53:35,946 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 18:53:35,947 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:53:35,947 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796413657] [2022-03-03 18:53:35,947 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796413657] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:53:35,947 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1341210525] [2022-03-03 18:53:35,947 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 18:53:35,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:53:35,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:53:35,949 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:53:35,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-03 18:53:35,979 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 18:53:35,979 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:53:35,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 21 conjunts are in the unsatisfiable core [2022-03-03 18:53:35,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:53:36,805 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:53:36,805 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:53:36,941 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 18:53:36,941 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1341210525] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:53:36,941 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:53:36,941 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 6] total 12 [2022-03-03 18:53:36,941 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671872147] [2022-03-03 18:53:36,941 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:53:36,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-03 18:53:36,942 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:53:36,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-03 18:53:36,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-03-03 18:53:36,943 INFO L87 Difference]: Start difference. First operand 7521 states and 29748 transitions. Second operand has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 12 states have internal predecessors, (50), 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) [2022-03-03 18:53:38,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:53:38,418 INFO L93 Difference]: Finished difference Result 11487 states and 44565 transitions. [2022-03-03 18:53:38,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-03 18:53:38,418 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 12 states have internal predecessors, (50), 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 29 [2022-03-03 18:53:38,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:53:38,449 INFO L225 Difference]: With dead ends: 11487 [2022-03-03 18:53:38,449 INFO L226 Difference]: Without dead ends: 11283 [2022-03-03 18:53:38,450 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 43 SyntacticMatches, 12 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-03-03 18:53:38,450 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 167 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 1684 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 1752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-03 18:53:38,450 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 297 Invalid, 1752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1684 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-03 18:53:38,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11283 states. [2022-03-03 18:53:38,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11283 to 8545. [2022-03-03 18:53:38,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8545 states, 8544 states have (on average 3.958918539325843) internal successors, (33825), 8544 states have internal predecessors, (33825), 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) [2022-03-03 18:53:38,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8545 states to 8545 states and 33825 transitions. [2022-03-03 18:53:38,641 INFO L78 Accepts]: Start accepts. Automaton has 8545 states and 33825 transitions. Word has length 29 [2022-03-03 18:53:38,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:53:38,641 INFO L470 AbstractCegarLoop]: Abstraction has 8545 states and 33825 transitions. [2022-03-03 18:53:38,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 12 states have internal predecessors, (50), 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) [2022-03-03 18:53:38,641 INFO L276 IsEmpty]: Start isEmpty. Operand 8545 states and 33825 transitions. [2022-03-03 18:53:38,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-03 18:53:38,661 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:53:38,661 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:53:38,681 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-03 18:53:38,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-03-03 18:53:38,882 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-03 18:53:38,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:53:38,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1805295454, now seen corresponding path program 4 times [2022-03-03 18:53:38,882 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:53:38,882 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183213508] [2022-03-03 18:53:38,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:53:38,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:53:38,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:53:38,972 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 18:53:38,973 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:53:38,973 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183213508] [2022-03-03 18:53:38,973 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183213508] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:53:38,973 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592997031] [2022-03-03 18:53:38,973 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 18:53:38,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:53:38,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:53:38,988 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:53:39,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-03 18:53:39,030 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 18:53:39,031 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:53:39,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 21 conjunts are in the unsatisfiable core [2022-03-03 18:53:39,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:53:40,121 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:53:40,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:53:40,276 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 18:53:40,276 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1592997031] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:53:40,276 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:53:40,277 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 6] total 13 [2022-03-03 18:53:40,277 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453625565] [2022-03-03 18:53:40,277 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:53:40,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-03 18:53:40,277 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:53:40,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-03 18:53:40,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-03-03 18:53:40,278 INFO L87 Difference]: Start difference. First operand 8545 states and 33825 transitions. Second operand has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 13 states have internal predecessors, (51), 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) [2022-03-03 18:53:42,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:53:42,250 INFO L93 Difference]: Finished difference Result 11493 states and 44847 transitions. [2022-03-03 18:53:42,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-03 18:53:42,251 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 13 states have internal predecessors, (51), 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 29 [2022-03-03 18:53:42,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:53:42,283 INFO L225 Difference]: With dead ends: 11493 [2022-03-03 18:53:42,283 INFO L226 Difference]: Without dead ends: 11357 [2022-03-03 18:53:42,283 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 43 SyntacticMatches, 11 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-03-03 18:53:42,284 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 165 mSDsluCounter, 620 mSDsCounter, 0 mSdLazyCounter, 1898 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 1963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1898 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-03-03 18:53:42,284 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [165 Valid, 342 Invalid, 1963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1898 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-03-03 18:53:42,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11357 states. [2022-03-03 18:53:42,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11357 to 9738. [2022-03-03 18:53:42,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9738 states, 9737 states have (on average 3.96333572969087) internal successors, (38591), 9737 states have internal predecessors, (38591), 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) [2022-03-03 18:53:42,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9738 states to 9738 states and 38591 transitions. [2022-03-03 18:53:42,482 INFO L78 Accepts]: Start accepts. Automaton has 9738 states and 38591 transitions. Word has length 29 [2022-03-03 18:53:42,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:53:42,482 INFO L470 AbstractCegarLoop]: Abstraction has 9738 states and 38591 transitions. [2022-03-03 18:53:42,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 13 states have internal predecessors, (51), 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) [2022-03-03 18:53:42,482 INFO L276 IsEmpty]: Start isEmpty. Operand 9738 states and 38591 transitions. [2022-03-03 18:53:42,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-03 18:53:42,502 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:53:42,502 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:53:42,518 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-03 18:53:42,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:53:42,718 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-03 18:53:42,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:53:42,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1672319534, now seen corresponding path program 5 times [2022-03-03 18:53:42,719 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:53:42,719 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44015854] [2022-03-03 18:53:42,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:53:42,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:53:42,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:53:42,810 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 18:53:42,811 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:53:42,811 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44015854] [2022-03-03 18:53:42,811 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44015854] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:53:42,811 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:53:42,811 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-03 18:53:42,811 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191710472] [2022-03-03 18:53:42,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:53:42,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 18:53:42,811 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:53:42,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 18:53:42,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-03-03 18:53:42,812 INFO L87 Difference]: Start difference. First operand 9738 states and 38591 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 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) [2022-03-03 18:53:43,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:53:43,112 INFO L93 Difference]: Finished difference Result 12122 states and 47539 transitions. [2022-03-03 18:53:43,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 18:53:43,112 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 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 29 [2022-03-03 18:53:43,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:53:43,145 INFO L225 Difference]: With dead ends: 12122 [2022-03-03 18:53:43,145 INFO L226 Difference]: Without dead ends: 12054 [2022-03-03 18:53:43,145 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-03-03 18:53:43,145 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 71 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 684 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 18:53:43,146 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 126 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 684 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 18:53:43,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12054 states. [2022-03-03 18:53:43,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12054 to 11043. [2022-03-03 18:53:43,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11043 states, 11042 states have (on average 3.967034957435247) internal successors, (43804), 11042 states have internal predecessors, (43804), 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) [2022-03-03 18:53:43,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11043 states to 11043 states and 43804 transitions. [2022-03-03 18:53:43,480 INFO L78 Accepts]: Start accepts. Automaton has 11043 states and 43804 transitions. Word has length 29 [2022-03-03 18:53:43,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:53:43,481 INFO L470 AbstractCegarLoop]: Abstraction has 11043 states and 43804 transitions. [2022-03-03 18:53:43,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 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) [2022-03-03 18:53:43,481 INFO L276 IsEmpty]: Start isEmpty. Operand 11043 states and 43804 transitions. [2022-03-03 18:53:43,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-03 18:53:43,503 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:53:43,504 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:53:43,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-03-03 18:53:43,504 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-03 18:53:43,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:53:43,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1478967768, now seen corresponding path program 1 times [2022-03-03 18:53:43,504 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:53:43,505 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878246631] [2022-03-03 18:53:43,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:53:43,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:53:43,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:53:43,592 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:53:43,592 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:53:43,593 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878246631] [2022-03-03 18:53:43,593 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878246631] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:53:43,593 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127791278] [2022-03-03 18:53:43,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:53:43,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:53:43,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:53:43,594 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:53:43,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-03 18:53:43,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:53:43,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 21 conjunts are in the unsatisfiable core [2022-03-03 18:53:43,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:53:44,068 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:53:44,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:53:44,201 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:53:44,201 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [127791278] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:53:44,201 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:53:44,201 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 6] total 10 [2022-03-03 18:53:44,201 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287484584] [2022-03-03 18:53:44,202 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:53:44,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-03 18:53:44,202 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:53:44,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-03 18:53:44,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-03-03 18:53:44,202 INFO L87 Difference]: Start difference. First operand 11043 states and 43804 transitions. Second operand has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 10 states have internal predecessors, (42), 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) [2022-03-03 18:53:44,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:53:44,890 INFO L93 Difference]: Finished difference Result 13109 states and 51239 transitions. [2022-03-03 18:53:44,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-03 18:53:44,891 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 10 states have internal predecessors, (42), 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 29 [2022-03-03 18:53:44,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:53:44,931 INFO L225 Difference]: With dead ends: 13109 [2022-03-03 18:53:44,932 INFO L226 Difference]: Without dead ends: 13007 [2022-03-03 18:53:44,932 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 45 SyntacticMatches, 12 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-03-03 18:53:44,932 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 124 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 1343 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 1392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 18:53:44,932 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 244 Invalid, 1392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1343 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 18:53:44,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13007 states. [2022-03-03 18:53:45,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13007 to 11738. [2022-03-03 18:53:45,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11738 states, 11737 states have (on average 3.9537360483939676) internal successors, (46405), 11737 states have internal predecessors, (46405), 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) [2022-03-03 18:53:45,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11738 states to 11738 states and 46405 transitions. [2022-03-03 18:53:45,182 INFO L78 Accepts]: Start accepts. Automaton has 11738 states and 46405 transitions. Word has length 29 [2022-03-03 18:53:45,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:53:45,182 INFO L470 AbstractCegarLoop]: Abstraction has 11738 states and 46405 transitions. [2022-03-03 18:53:45,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 10 states have internal predecessors, (42), 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) [2022-03-03 18:53:45,182 INFO L276 IsEmpty]: Start isEmpty. Operand 11738 states and 46405 transitions. [2022-03-03 18:53:45,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-03 18:53:45,205 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:53:45,205 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:53:45,221 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-03-03 18:53:45,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:53:45,412 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-03 18:53:45,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:53:45,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1794307392, now seen corresponding path program 2 times [2022-03-03 18:53:45,417 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:53:45,417 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589715530] [2022-03-03 18:53:45,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:53:45,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:53:45,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:53:45,513 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 18:53:45,513 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:53:45,513 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589715530] [2022-03-03 18:53:45,513 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589715530] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:53:45,513 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491904503] [2022-03-03 18:53:45,513 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 18:53:45,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:53:45,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:53:45,515 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:53:45,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-03 18:53:45,559 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 18:53:45,559 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:53:45,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 21 conjunts are in the unsatisfiable core [2022-03-03 18:53:45,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:53:46,068 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:53:46,069 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:53:46,194 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 18:53:46,194 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491904503] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:53:46,194 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:53:46,194 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 6] total 11 [2022-03-03 18:53:46,194 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461052914] [2022-03-03 18:53:46,194 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:53:46,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-03 18:53:46,194 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:53:46,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-03 18:53:46,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-03-03 18:53:46,195 INFO L87 Difference]: Start difference. First operand 11738 states and 46405 transitions. Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 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) [2022-03-03 18:53:47,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:53:47,017 INFO L93 Difference]: Finished difference Result 14654 states and 56991 transitions. [2022-03-03 18:53:47,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-03 18:53:47,018 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 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 29 [2022-03-03 18:53:47,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:53:47,061 INFO L225 Difference]: With dead ends: 14654 [2022-03-03 18:53:47,061 INFO L226 Difference]: Without dead ends: 14501 [2022-03-03 18:53:47,061 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 43 SyntacticMatches, 13 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-03-03 18:53:47,062 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 144 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 1578 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 1634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 18:53:47,062 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 275 Invalid, 1634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1578 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 18:53:47,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14501 states. [2022-03-03 18:53:47,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14501 to 12515. [2022-03-03 18:53:47,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12515 states, 12514 states have (on average 3.949656384848969) internal successors, (49426), 12514 states have internal predecessors, (49426), 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) [2022-03-03 18:53:47,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12515 states to 12515 states and 49426 transitions. [2022-03-03 18:53:47,335 INFO L78 Accepts]: Start accepts. Automaton has 12515 states and 49426 transitions. Word has length 29 [2022-03-03 18:53:47,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:53:47,335 INFO L470 AbstractCegarLoop]: Abstraction has 12515 states and 49426 transitions. [2022-03-03 18:53:47,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 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) [2022-03-03 18:53:47,336 INFO L276 IsEmpty]: Start isEmpty. Operand 12515 states and 49426 transitions. [2022-03-03 18:53:47,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-03 18:53:47,362 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:53:47,363 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:53:47,381 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-03-03 18:53:47,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-03-03 18:53:47,571 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-03 18:53:47,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:53:47,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1574438962, now seen corresponding path program 3 times [2022-03-03 18:53:47,571 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:53:47,572 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657271324] [2022-03-03 18:53:47,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:53:47,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:53:47,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:53:47,705 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 18:53:47,706 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:53:47,706 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657271324] [2022-03-03 18:53:47,706 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657271324] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:53:47,706 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73358088] [2022-03-03 18:53:47,706 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 18:53:47,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:53:47,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:53:47,707 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:53:47,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-03-03 18:53:47,737 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 18:53:47,738 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:53:47,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 21 conjunts are in the unsatisfiable core [2022-03-03 18:53:47,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:53:48,271 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:53:48,271 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:53:48,397 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 18:53:48,397 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73358088] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:53:48,397 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:53:48,397 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 6] total 12 [2022-03-03 18:53:48,398 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241310479] [2022-03-03 18:53:48,398 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:53:48,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-03 18:53:48,399 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:53:48,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-03 18:53:48,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-03-03 18:53:48,402 INFO L87 Difference]: Start difference. First operand 12515 states and 49426 transitions. Second operand has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 12 states have internal predecessors, (46), 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) [2022-03-03 18:53:49,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:53:49,209 INFO L93 Difference]: Finished difference Result 16013 states and 62264 transitions. [2022-03-03 18:53:49,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-03 18:53:49,209 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 12 states have internal predecessors, (46), 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 29 [2022-03-03 18:53:49,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:53:49,255 INFO L225 Difference]: With dead ends: 16013 [2022-03-03 18:53:49,256 INFO L226 Difference]: Without dead ends: 15860 [2022-03-03 18:53:49,256 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 43 SyntacticMatches, 12 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-03-03 18:53:49,256 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 167 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 1504 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 1576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 18:53:49,256 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 268 Invalid, 1576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1504 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 18:53:49,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15860 states. [2022-03-03 18:53:49,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15860 to 13539. [2022-03-03 18:53:49,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13539 states, 13538 states have (on average 3.9462993056581475) internal successors, (53425), 13538 states have internal predecessors, (53425), 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) [2022-03-03 18:53:49,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13539 states to 13539 states and 53425 transitions. [2022-03-03 18:53:49,547 INFO L78 Accepts]: Start accepts. Automaton has 13539 states and 53425 transitions. Word has length 29 [2022-03-03 18:53:49,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:53:49,547 INFO L470 AbstractCegarLoop]: Abstraction has 13539 states and 53425 transitions. [2022-03-03 18:53:49,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 12 states have internal predecessors, (46), 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) [2022-03-03 18:53:49,547 INFO L276 IsEmpty]: Start isEmpty. Operand 13539 states and 53425 transitions. [2022-03-03 18:53:49,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-03 18:53:49,576 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:53:49,576 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:53:49,595 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-03-03 18:53:49,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-03-03 18:53:49,796 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-03 18:53:49,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:53:49,796 INFO L85 PathProgramCache]: Analyzing trace with hash -969860962, now seen corresponding path program 4 times [2022-03-03 18:53:49,796 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:53:49,796 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406015606] [2022-03-03 18:53:49,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:53:49,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:53:49,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:53:49,905 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 18:53:49,906 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:53:49,906 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406015606] [2022-03-03 18:53:49,906 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406015606] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:53:49,906 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031178181] [2022-03-03 18:53:49,906 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 18:53:49,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:53:49,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:53:49,907 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:53:49,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-03-03 18:53:49,930 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 18:53:49,930 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:53:49,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 21 conjunts are in the unsatisfiable core [2022-03-03 18:53:49,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2022-03-03 19:08:08,107 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-03-03 19:08:08,139 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-03-03 19:08:08,331 WARN L244 SmtUtils]: Removed 1 from assertion stack [2022-03-03 19:08:08,332 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (4 of 5 remaining) [2022-03-03 19:08:08,350 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-03-03 19:08:08,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-03-03 19:08:08,551 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was analyzing trace of length 30 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-1093-1 term,while PolyPacSimplificationTermWalker was simplifying 1093 xjuncts wrt. a ATOM-1 context. [2022-03-03 19:08:08,552 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (3 of 5 remaining) [2022-03-03 19:08:08,552 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (2 of 5 remaining) [2022-03-03 19:08:08,552 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION (1 of 5 remaining) [2022-03-03 19:08:08,552 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3INUSE_VIOLATION (0 of 5 remaining) [2022-03-03 19:08:08,555 INFO L732 BasicCegarLoop]: Path program histogram: [5, 4, 2, 2, 1, 1, 1] [2022-03-03 19:08:08,556 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-03 19:08:08,556 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-03 19:08:08,558 INFO L202 PluginConnector]: Adding new model exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.03 07:08:08 BasicIcfg [2022-03-03 19:08:08,558 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-03 19:08:08,558 INFO L158 Benchmark]: Toolchain (without parser) took 881999.46ms. Allocated memory was 166.7MB in the beginning and 1.9GB in the end (delta: 1.8GB). Free memory was 123.3MB in the beginning and 883.6MB in the end (delta: -760.3MB). Peak memory consumption was 1.4GB. Max. memory is 8.0GB. [2022-03-03 19:08:08,558 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.10ms. Allocated memory is still 166.7MB. Free memory is still 124.4MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-03 19:08:08,559 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.19ms. Allocated memory is still 166.7MB. Free memory was 123.2MB in the beginning and 121.7MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-03 19:08:08,559 INFO L158 Benchmark]: Boogie Preprocessor took 11.79ms. Allocated memory is still 166.7MB. Free memory was 121.7MB in the beginning and 120.7MB in the end (delta: 975.6kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-03 19:08:08,559 INFO L158 Benchmark]: RCFGBuilder took 183.76ms. Allocated memory is still 166.7MB. Free memory was 120.6MB in the beginning and 111.2MB in the end (delta: 9.5MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-03-03 19:08:08,559 INFO L158 Benchmark]: TraceAbstraction took 881779.60ms. Allocated memory was 166.7MB in the beginning and 1.9GB in the end (delta: 1.8GB). Free memory was 110.6MB in the beginning and 883.6MB in the end (delta: -772.9MB). Peak memory consumption was 1.4GB. Max. memory is 8.0GB. [2022-03-03 19:08:08,560 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.10ms. Allocated memory is still 166.7MB. Free memory is still 124.4MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 21.19ms. Allocated memory is still 166.7MB. Free memory was 123.2MB in the beginning and 121.7MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 11.79ms. Allocated memory is still 166.7MB. Free memory was 121.7MB in the beginning and 120.7MB in the end (delta: 975.6kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 183.76ms. Allocated memory is still 166.7MB. Free memory was 120.6MB in the beginning and 111.2MB in the end (delta: 9.5MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * TraceAbstraction took 881779.60ms. Allocated memory was 166.7MB in the beginning and 1.9GB in the end (delta: 1.8GB). Free memory was 110.6MB in the beginning and 883.6MB in the end (delta: -772.9MB). Peak memory consumption was 1.4GB. 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 - TimeoutResultAtElement [Line: 72]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while BasicCegarLoop was analyzing trace of length 30 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-1093-1 term,while PolyPacSimplificationTermWalker was simplifying 1093 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 63]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 30 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-1093-1 term,while PolyPacSimplificationTermWalker was simplifying 1093 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 63]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 30 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-1093-1 term,while PolyPacSimplificationTermWalker was simplifying 1093 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 64]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 30 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-1093-1 term,while PolyPacSimplificationTermWalker was simplifying 1093 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 65]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 30 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-1093-1 term,while PolyPacSimplificationTermWalker was simplifying 1093 xjuncts wrt. a ATOM-1 context. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 74 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 881.7s, OverallIterations: 16, TraceHistogramMax: 1, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.3s, AutomataDifference: 9.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1569 SdHoareTripleChecker+Valid, 7.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1569 mSDsluCounter, 2638 SdHoareTripleChecker+Invalid, 6.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4027 mSDsCounter, 460 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 12262 IncrementalHoareTripleChecker+Invalid, 12722 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 460 mSolverCounterUnsat, 581 mSDtfsCounter, 12262 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 592 GetRequests, 404 SyntacticMatches, 90 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13539occurred in iteration=15, InterpolantAutomatonStates: 126, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.1s AutomataMinimizationTime, 15 MinimizatonAttempts, 21961 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 7.3s InterpolantComputationTime, 646 NumberOfCodeBlocks, 646 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 864 ConstructedInterpolants, 0 QuantifiedInterpolants, 16244 SizeOfPredicates, 32 NumberOfNonLiveVariables, 666 ConjunctsInSsa, 153 ConjunctsInUnsatCore, 33 InterpolantComputations, 6 PerfectInterpolantSequences, 21/54 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 RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown