/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label09.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 18:48:52,557 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 18:48:52,650 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 18:48:52,653 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 18:48:52,654 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 18:48:52,671 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 18:48:52,671 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 18:48:52,672 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 18:48:52,672 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 18:48:52,673 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 18:48:52,673 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 18:48:52,673 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 18:48:52,674 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 18:48:52,674 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 18:48:52,675 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 18:48:52,675 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 18:48:52,675 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 18:48:52,676 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 18:48:52,676 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 18:48:52,676 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 18:48:52,677 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 18:48:52,678 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 18:48:52,678 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 18:48:52,678 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 18:48:52,679 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 18:48:52,679 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 18:48:52,679 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 18:48:52,679 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 18:48:52,680 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 18:48:52,680 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 18:48:52,681 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 18:48:52,681 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 18:48:52,681 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 18:48:52,682 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 18:48:52,682 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 18:48:52,682 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 18:48:52,682 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 18:48:52,682 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 18:48:52,683 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 18:48:52,683 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 18:48:52,683 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 18:48:52,683 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 18:48:52,684 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 18:48:52,684 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 18:48:52,932 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 18:48:52,951 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 18:48:52,955 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 18:48:52,956 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 18:48:52,957 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 18:48:52,958 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label09.c [2023-12-15 18:48:54,054 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 18:48:54,440 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 18:48:54,441 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label09.c [2023-12-15 18:48:54,473 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f13facb66/047581c86634406288d49bf675ec7742/FLAG4cd714782 [2023-12-15 18:48:54,489 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f13facb66/047581c86634406288d49bf675ec7742 [2023-12-15 18:48:54,492 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 18:48:54,494 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 18:48:54,496 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 18:48:54,496 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 18:48:54,500 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 18:48:54,501 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 06:48:54" (1/1) ... [2023-12-15 18:48:54,502 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d041f9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:48:54, skipping insertion in model container [2023-12-15 18:48:54,502 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 06:48:54" (1/1) ... [2023-12-15 18:48:54,605 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 18:48:54,856 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label09.c[8109,8122] [2023-12-15 18:48:55,577 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 18:48:55,589 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 18:48:55,619 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label09.c[8109,8122] [2023-12-15 18:48:56,022 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 18:48:56,041 INFO L206 MainTranslator]: Completed translation [2023-12-15 18:48:56,041 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:48:56 WrapperNode [2023-12-15 18:48:56,041 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 18:48:56,042 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 18:48:56,043 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 18:48:56,043 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 18:48:56,049 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:48:56" (1/1) ... [2023-12-15 18:48:56,088 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:48:56" (1/1) ... [2023-12-15 18:48:56,282 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4761 [2023-12-15 18:48:56,283 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 18:48:56,283 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 18:48:56,283 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 18:48:56,283 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 18:48:56,294 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:48:56" (1/1) ... [2023-12-15 18:48:56,294 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:48:56" (1/1) ... [2023-12-15 18:48:56,396 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:48:56" (1/1) ... [2023-12-15 18:48:56,556 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-15 18:48:56,556 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:48:56" (1/1) ... [2023-12-15 18:48:56,556 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:48:56" (1/1) ... [2023-12-15 18:48:56,728 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:48:56" (1/1) ... [2023-12-15 18:48:56,757 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:48:56" (1/1) ... [2023-12-15 18:48:56,777 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:48:56" (1/1) ... [2023-12-15 18:48:56,793 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:48:56" (1/1) ... [2023-12-15 18:48:56,858 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 18:48:56,860 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 18:48:56,860 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 18:48:56,860 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 18:48:56,862 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:48:56" (1/1) ... [2023-12-15 18:48:56,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 18:48:56,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:48:56,893 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-15 18:48:56,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-15 18:48:56,920 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 18:48:56,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 18:48:56,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 18:48:56,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 18:48:56,975 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 18:48:56,976 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 18:49:00,667 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 18:49:00,731 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 18:49:00,732 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 18:49:00,732 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 06:49:00 BoogieIcfgContainer [2023-12-15 18:49:00,732 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 18:49:00,734 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 18:49:00,734 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 18:49:00,737 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 18:49:00,737 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 06:48:54" (1/3) ... [2023-12-15 18:49:00,738 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bbbaea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 06:49:00, skipping insertion in model container [2023-12-15 18:49:00,738 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:48:56" (2/3) ... [2023-12-15 18:49:00,738 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bbbaea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 06:49:00, skipping insertion in model container [2023-12-15 18:49:00,739 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 06:49:00" (3/3) ... [2023-12-15 18:49:00,740 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label09.c [2023-12-15 18:49:00,755 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 18:49:00,755 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 18:49:00,828 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 18:49:00,835 INFO L357 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=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1dcdd2ca, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 18:49:00,835 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 18:49:00,844 INFO L276 IsEmpty]: Start isEmpty. Operand has 756 states, 754 states have (on average 1.993368700265252) internal successors, (1503), 755 states have internal predecessors, (1503), 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) [2023-12-15 18:49:00,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-15 18:49:00,853 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:49:00,854 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:49:00,854 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:49:00,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:49:00,861 INFO L85 PathProgramCache]: Analyzing trace with hash 925616397, now seen corresponding path program 1 times [2023-12-15 18:49:00,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:49:00,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109984904] [2023-12-15 18:49:00,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:49:00,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:49:00,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:49:01,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:49:01,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:49:01,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109984904] [2023-12-15 18:49:01,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109984904] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:49:01,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:49:01,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 18:49:01,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334302420] [2023-12-15 18:49:01,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:49:01,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 18:49:01,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:49:01,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 18:49:01,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 18:49:01,096 INFO L87 Difference]: Start difference. First operand has 756 states, 754 states have (on average 1.993368700265252) internal successors, (1503), 755 states have internal predecessors, (1503), 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 2 states, 2 states have (on average 32.5) internal successors, (65), 2 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:49:01,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:49:01,185 INFO L93 Difference]: Finished difference Result 1511 states and 3005 transitions. [2023-12-15 18:49:01,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 18:49:01,190 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 32.5) internal successors, (65), 2 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2023-12-15 18:49:01,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:49:01,210 INFO L225 Difference]: With dead ends: 1511 [2023-12-15 18:49:01,210 INFO L226 Difference]: Without dead ends: 754 [2023-12-15 18:49:01,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 18:49:01,221 INFO L413 NwaCegarLoop]: 1438 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1438 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:49:01,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1438 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:49:01,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2023-12-15 18:49:01,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 754. [2023-12-15 18:49:01,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 753 states have (on average 1.9096945551128819) internal successors, (1438), 753 states have internal predecessors, (1438), 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) [2023-12-15 18:49:01,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1438 transitions. [2023-12-15 18:49:01,302 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1438 transitions. Word has length 65 [2023-12-15 18:49:01,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:49:01,303 INFO L495 AbstractCegarLoop]: Abstraction has 754 states and 1438 transitions. [2023-12-15 18:49:01,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.5) internal successors, (65), 2 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:49:01,303 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1438 transitions. [2023-12-15 18:49:01,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-15 18:49:01,306 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:49:01,306 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:49:01,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 18:49:01,307 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:49:01,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:49:01,307 INFO L85 PathProgramCache]: Analyzing trace with hash 791687097, now seen corresponding path program 1 times [2023-12-15 18:49:01,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:49:01,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914579874] [2023-12-15 18:49:01,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:49:01,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:49:01,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:49:01,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:49:01,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:49:01,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914579874] [2023-12-15 18:49:01,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914579874] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:49:01,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:49:01,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:49:01,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467418433] [2023-12-15 18:49:01,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:49:01,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:49:01,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:49:01,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:49:01,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:49:01,661 INFO L87 Difference]: Start difference. First operand 754 states and 1438 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:49:07,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:49:07,521 INFO L93 Difference]: Finished difference Result 3009 states and 5747 transitions. [2023-12-15 18:49:07,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 18:49:07,522 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2023-12-15 18:49:07,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:49:07,534 INFO L225 Difference]: With dead ends: 3009 [2023-12-15 18:49:07,535 INFO L226 Difference]: Without dead ends: 2256 [2023-12-15 18:49:07,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 18:49:07,537 INFO L413 NwaCegarLoop]: 691 mSDtfsCounter, 2185 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5155 mSolverCounterSat, 1245 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2185 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 6400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1245 IncrementalHoareTripleChecker+Valid, 5155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2023-12-15 18:49:07,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2185 Valid, 709 Invalid, 6400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1245 Valid, 5155 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2023-12-15 18:49:07,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2256 states. [2023-12-15 18:49:07,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2256 to 2256. [2023-12-15 18:49:07,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2256 states, 2255 states have (on average 1.5139689578713968) internal successors, (3414), 2255 states have internal predecessors, (3414), 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) [2023-12-15 18:49:07,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2256 states to 2256 states and 3414 transitions. [2023-12-15 18:49:07,580 INFO L78 Accepts]: Start accepts. Automaton has 2256 states and 3414 transitions. Word has length 65 [2023-12-15 18:49:07,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:49:07,580 INFO L495 AbstractCegarLoop]: Abstraction has 2256 states and 3414 transitions. [2023-12-15 18:49:07,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:49:07,581 INFO L276 IsEmpty]: Start isEmpty. Operand 2256 states and 3414 transitions. [2023-12-15 18:49:07,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-15 18:49:07,587 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:49:07,588 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:49:07,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 18:49:07,588 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:49:07,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:49:07,596 INFO L85 PathProgramCache]: Analyzing trace with hash -700140278, now seen corresponding path program 1 times [2023-12-15 18:49:07,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:49:07,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314507927] [2023-12-15 18:49:07,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:49:07,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:49:07,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:49:08,026 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:49:08,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:49:08,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314507927] [2023-12-15 18:49:08,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314507927] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:49:08,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:49:08,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:49:08,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288170364] [2023-12-15 18:49:08,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:49:08,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:49:08,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:49:08,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:49:08,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:49:08,029 INFO L87 Difference]: Start difference. First operand 2256 states and 3414 transitions. Second operand has 4 states, 4 states have (on average 34.0) internal successors, (136), 3 states have internal predecessors, (136), 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) [2023-12-15 18:49:11,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:49:11,684 INFO L93 Difference]: Finished difference Result 6050 states and 9519 transitions. [2023-12-15 18:49:11,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 18:49:11,685 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 3 states have internal predecessors, (136), 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 136 [2023-12-15 18:49:11,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:49:11,699 INFO L225 Difference]: With dead ends: 6050 [2023-12-15 18:49:11,699 INFO L226 Difference]: Without dead ends: 3758 [2023-12-15 18:49:11,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:49:11,704 INFO L413 NwaCegarLoop]: 691 mSDtfsCounter, 703 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 3108 mSolverCounterSat, 729 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 703 SdHoareTripleChecker+Valid, 704 SdHoareTripleChecker+Invalid, 3837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 729 IncrementalHoareTripleChecker+Valid, 3108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-12-15 18:49:11,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [703 Valid, 704 Invalid, 3837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [729 Valid, 3108 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-12-15 18:49:11,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3758 states. [2023-12-15 18:49:11,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3758 to 3758. [2023-12-15 18:49:11,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3758 states, 3757 states have (on average 1.3305829118977908) internal successors, (4999), 3757 states have internal predecessors, (4999), 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) [2023-12-15 18:49:11,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3758 states to 3758 states and 4999 transitions. [2023-12-15 18:49:11,769 INFO L78 Accepts]: Start accepts. Automaton has 3758 states and 4999 transitions. Word has length 136 [2023-12-15 18:49:11,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:49:11,770 INFO L495 AbstractCegarLoop]: Abstraction has 3758 states and 4999 transitions. [2023-12-15 18:49:11,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 3 states have internal predecessors, (136), 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) [2023-12-15 18:49:11,770 INFO L276 IsEmpty]: Start isEmpty. Operand 3758 states and 4999 transitions. [2023-12-15 18:49:11,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2023-12-15 18:49:11,773 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:49:11,773 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:49:11,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 18:49:11,774 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:49:11,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:49:11,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1910089640, now seen corresponding path program 1 times [2023-12-15 18:49:11,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:49:11,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139150375] [2023-12-15 18:49:11,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:49:11,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:49:11,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:49:12,299 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-12-15 18:49:12,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:49:12,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139150375] [2023-12-15 18:49:12,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139150375] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:49:12,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:49:12,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:49:12,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953135927] [2023-12-15 18:49:12,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:49:12,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:49:12,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:49:12,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:49:12,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:49:12,302 INFO L87 Difference]: Start difference. First operand 3758 states and 4999 transitions. Second operand has 4 states, 4 states have (on average 52.0) internal successors, (208), 3 states have internal predecessors, (208), 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) [2023-12-15 18:49:15,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:49:15,396 INFO L93 Difference]: Finished difference Result 9056 states and 12623 transitions. [2023-12-15 18:49:15,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 18:49:15,397 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 52.0) internal successors, (208), 3 states have internal predecessors, (208), 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 277 [2023-12-15 18:49:15,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:49:15,415 INFO L225 Difference]: With dead ends: 9056 [2023-12-15 18:49:15,415 INFO L226 Difference]: Without dead ends: 5262 [2023-12-15 18:49:15,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:49:15,430 INFO L413 NwaCegarLoop]: 307 mSDtfsCounter, 850 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 3409 mSolverCounterSat, 553 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 850 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 3962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 553 IncrementalHoareTripleChecker+Valid, 3409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:49:15,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [850 Valid, 321 Invalid, 3962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [553 Valid, 3409 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-15 18:49:15,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5262 states. [2023-12-15 18:49:15,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5262 to 5260. [2023-12-15 18:49:15,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5260 states, 5259 states have (on average 1.3242061228370412) internal successors, (6964), 5259 states have internal predecessors, (6964), 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) [2023-12-15 18:49:15,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5260 states to 5260 states and 6964 transitions. [2023-12-15 18:49:15,534 INFO L78 Accepts]: Start accepts. Automaton has 5260 states and 6964 transitions. Word has length 277 [2023-12-15 18:49:15,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:49:15,536 INFO L495 AbstractCegarLoop]: Abstraction has 5260 states and 6964 transitions. [2023-12-15 18:49:15,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.0) internal successors, (208), 3 states have internal predecessors, (208), 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) [2023-12-15 18:49:15,537 INFO L276 IsEmpty]: Start isEmpty. Operand 5260 states and 6964 transitions. [2023-12-15 18:49:15,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2023-12-15 18:49:15,541 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:49:15,542 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:49:15,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 18:49:15,543 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:49:15,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:49:15,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1025249157, now seen corresponding path program 1 times [2023-12-15 18:49:15,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:49:15,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014847375] [2023-12-15 18:49:15,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:49:15,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:49:15,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:49:15,762 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 211 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:49:15,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:49:15,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014847375] [2023-12-15 18:49:15,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014847375] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:49:15,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:49:15,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:49:15,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777487234] [2023-12-15 18:49:15,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:49:15,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:49:15,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:49:15,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:49:15,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:49:15,764 INFO L87 Difference]: Start difference. First operand 5260 states and 6964 transitions. Second operand has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 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) [2023-12-15 18:49:18,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:49:18,599 INFO L93 Difference]: Finished difference Result 15025 states and 20133 transitions. [2023-12-15 18:49:18,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:49:18,599 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 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 291 [2023-12-15 18:49:18,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:49:18,632 INFO L225 Difference]: With dead ends: 15025 [2023-12-15 18:49:18,633 INFO L226 Difference]: Without dead ends: 9766 [2023-12-15 18:49:18,642 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:49:18,642 INFO L413 NwaCegarLoop]: 1251 mSDtfsCounter, 675 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2631 mSolverCounterSat, 388 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 675 SdHoareTripleChecker+Valid, 1258 SdHoareTripleChecker+Invalid, 3019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 388 IncrementalHoareTripleChecker+Valid, 2631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-15 18:49:18,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [675 Valid, 1258 Invalid, 3019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [388 Valid, 2631 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-15 18:49:18,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9766 states. [2023-12-15 18:49:18,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9766 to 9766. [2023-12-15 18:49:18,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9766 states, 9765 states have (on average 1.2974910394265233) internal successors, (12670), 9765 states have internal predecessors, (12670), 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) [2023-12-15 18:49:18,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9766 states to 9766 states and 12670 transitions. [2023-12-15 18:49:18,851 INFO L78 Accepts]: Start accepts. Automaton has 9766 states and 12670 transitions. Word has length 291 [2023-12-15 18:49:18,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:49:18,851 INFO L495 AbstractCegarLoop]: Abstraction has 9766 states and 12670 transitions. [2023-12-15 18:49:18,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 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) [2023-12-15 18:49:18,852 INFO L276 IsEmpty]: Start isEmpty. Operand 9766 states and 12670 transitions. [2023-12-15 18:49:18,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2023-12-15 18:49:18,855 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:49:18,856 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:49:18,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-15 18:49:18,856 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:49:18,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:49:18,856 INFO L85 PathProgramCache]: Analyzing trace with hash -198815153, now seen corresponding path program 1 times [2023-12-15 18:49:18,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:49:18,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056697171] [2023-12-15 18:49:18,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:49:18,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:49:18,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:49:19,083 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-15 18:49:19,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:49:19,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056697171] [2023-12-15 18:49:19,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056697171] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:49:19,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:49:19,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:49:19,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30917422] [2023-12-15 18:49:19,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:49:19,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:49:19,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:49:19,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:49:19,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:49:19,086 INFO L87 Difference]: Start difference. First operand 9766 states and 12670 transitions. Second operand has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 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) [2023-12-15 18:49:22,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:49:22,009 INFO L93 Difference]: Finished difference Result 25539 states and 33978 transitions. [2023-12-15 18:49:22,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:49:22,009 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 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 295 [2023-12-15 18:49:22,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:49:22,055 INFO L225 Difference]: With dead ends: 25539 [2023-12-15 18:49:22,056 INFO L226 Difference]: Without dead ends: 15774 [2023-12-15 18:49:22,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:49:22,071 INFO L413 NwaCegarLoop]: 520 mSDtfsCounter, 702 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2276 mSolverCounterSat, 637 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 2913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 637 IncrementalHoareTripleChecker+Valid, 2276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-15 18:49:22,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [702 Valid, 527 Invalid, 2913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [637 Valid, 2276 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-15 18:49:22,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15774 states. [2023-12-15 18:49:22,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15774 to 15774. [2023-12-15 18:49:22,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15774 states, 15773 states have (on average 1.2829518797945856) internal successors, (20236), 15773 states have internal predecessors, (20236), 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) [2023-12-15 18:49:22,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15774 states to 15774 states and 20236 transitions. [2023-12-15 18:49:22,391 INFO L78 Accepts]: Start accepts. Automaton has 15774 states and 20236 transitions. Word has length 295 [2023-12-15 18:49:22,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:49:22,392 INFO L495 AbstractCegarLoop]: Abstraction has 15774 states and 20236 transitions. [2023-12-15 18:49:22,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 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) [2023-12-15 18:49:22,393 INFO L276 IsEmpty]: Start isEmpty. Operand 15774 states and 20236 transitions. [2023-12-15 18:49:22,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2023-12-15 18:49:22,397 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:49:22,398 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:49:22,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-15 18:49:22,398 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:49:22,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:49:22,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1050476485, now seen corresponding path program 1 times [2023-12-15 18:49:22,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:49:22,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61751845] [2023-12-15 18:49:22,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:49:22,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:49:22,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:49:22,627 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2023-12-15 18:49:22,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:49:22,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61751845] [2023-12-15 18:49:22,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61751845] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:49:22,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:49:22,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 18:49:22,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309958278] [2023-12-15 18:49:22,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:49:22,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:49:22,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:49:22,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:49:22,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:49:22,630 INFO L87 Difference]: Start difference. First operand 15774 states and 20236 transitions. Second operand has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 2 states have internal predecessors, (212), 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) [2023-12-15 18:49:25,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:49:25,369 INFO L93 Difference]: Finished difference Result 44314 states and 57481 transitions. [2023-12-15 18:49:25,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:49:25,369 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 2 states have internal predecessors, (212), 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 303 [2023-12-15 18:49:25,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:49:25,419 INFO L225 Difference]: With dead ends: 44314 [2023-12-15 18:49:25,420 INFO L226 Difference]: Without dead ends: 28541 [2023-12-15 18:49:25,434 INFO L412 NwaCegarLoop]: 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 [2023-12-15 18:49:25,435 INFO L413 NwaCegarLoop]: 415 mSDtfsCounter, 689 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1968 mSolverCounterSat, 841 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 689 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 2809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 841 IncrementalHoareTripleChecker+Valid, 1968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-15 18:49:25,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [689 Valid, 421 Invalid, 2809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [841 Valid, 1968 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-15 18:49:25,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28541 states. [2023-12-15 18:49:25,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28541 to 25537. [2023-12-15 18:49:25,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25537 states, 25536 states have (on average 1.2187108395989974) internal successors, (31121), 25536 states have internal predecessors, (31121), 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) [2023-12-15 18:49:25,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25537 states to 25537 states and 31121 transitions. [2023-12-15 18:49:25,797 INFO L78 Accepts]: Start accepts. Automaton has 25537 states and 31121 transitions. Word has length 303 [2023-12-15 18:49:25,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:49:25,797 INFO L495 AbstractCegarLoop]: Abstraction has 25537 states and 31121 transitions. [2023-12-15 18:49:25,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 2 states have internal predecessors, (212), 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) [2023-12-15 18:49:25,798 INFO L276 IsEmpty]: Start isEmpty. Operand 25537 states and 31121 transitions. [2023-12-15 18:49:25,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2023-12-15 18:49:25,803 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:49:25,803 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:49:25,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-15 18:49:25,803 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:49:25,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:49:25,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1087671971, now seen corresponding path program 1 times [2023-12-15 18:49:25,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:49:25,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509439250] [2023-12-15 18:49:25,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:49:25,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:49:25,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:49:26,356 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2023-12-15 18:49:26,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:49:26,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509439250] [2023-12-15 18:49:26,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509439250] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:49:26,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:49:26,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:49:26,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801606289] [2023-12-15 18:49:26,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:49:26,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:49:26,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:49:26,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:49:26,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:49:26,359 INFO L87 Difference]: Start difference. First operand 25537 states and 31121 transitions. Second operand has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 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) [2023-12-15 18:49:28,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:49:28,869 INFO L93 Difference]: Finished difference Result 61587 states and 73942 transitions. [2023-12-15 18:49:28,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:49:28,869 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 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 342 [2023-12-15 18:49:28,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:49:28,924 INFO L225 Difference]: With dead ends: 61587 [2023-12-15 18:49:28,925 INFO L226 Difference]: Without dead ends: 36051 [2023-12-15 18:49:28,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:49:28,955 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 767 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2319 mSolverCounterSat, 421 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 767 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 2740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 421 IncrementalHoareTripleChecker+Valid, 2319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-15 18:49:28,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [767 Valid, 207 Invalid, 2740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [421 Valid, 2319 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-15 18:49:28,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36051 states. [2023-12-15 18:49:29,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36051 to 31545. [2023-12-15 18:49:29,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31545 states, 31544 states have (on average 1.184250570631499) internal successors, (37356), 31544 states have internal predecessors, (37356), 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) [2023-12-15 18:49:29,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31545 states to 31545 states and 37356 transitions. [2023-12-15 18:49:29,362 INFO L78 Accepts]: Start accepts. Automaton has 31545 states and 37356 transitions. Word has length 342 [2023-12-15 18:49:29,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:49:29,363 INFO L495 AbstractCegarLoop]: Abstraction has 31545 states and 37356 transitions. [2023-12-15 18:49:29,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 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) [2023-12-15 18:49:29,363 INFO L276 IsEmpty]: Start isEmpty. Operand 31545 states and 37356 transitions. [2023-12-15 18:49:29,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2023-12-15 18:49:29,371 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:49:29,372 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:49:29,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-15 18:49:29,373 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:49:29,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:49:29,373 INFO L85 PathProgramCache]: Analyzing trace with hash -745314010, now seen corresponding path program 1 times [2023-12-15 18:49:29,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:49:29,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209450636] [2023-12-15 18:49:29,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:49:29,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:49:29,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:49:29,797 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 378 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-12-15 18:49:29,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:49:29,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209450636] [2023-12-15 18:49:29,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209450636] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:49:29,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:49:29,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:49:29,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65630203] [2023-12-15 18:49:29,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:49:29,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:49:29,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:49:29,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:49:29,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:49:29,800 INFO L87 Difference]: Start difference. First operand 31545 states and 37356 transitions. Second operand has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 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) [2023-12-15 18:49:32,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:49:32,461 INFO L93 Difference]: Finished difference Result 78860 states and 93955 transitions. [2023-12-15 18:49:32,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:49:32,462 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 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 398 [2023-12-15 18:49:32,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:49:32,523 INFO L225 Difference]: With dead ends: 78860 [2023-12-15 18:49:32,523 INFO L226 Difference]: Without dead ends: 47316 [2023-12-15 18:49:32,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:49:32,552 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 668 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2443 mSolverCounterSat, 462 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 668 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 2905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 462 IncrementalHoareTripleChecker+Valid, 2443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-15 18:49:32,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [668 Valid, 294 Invalid, 2905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [462 Valid, 2443 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-15 18:49:32,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47316 states. [2023-12-15 18:49:33,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47316 to 46565. [2023-12-15 18:49:33,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46565 states, 46564 states have (on average 1.1781633880250837) internal successors, (54860), 46564 states have internal predecessors, (54860), 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) [2023-12-15 18:49:33,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46565 states to 46565 states and 54860 transitions. [2023-12-15 18:49:33,232 INFO L78 Accepts]: Start accepts. Automaton has 46565 states and 54860 transitions. Word has length 398 [2023-12-15 18:49:33,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:49:33,233 INFO L495 AbstractCegarLoop]: Abstraction has 46565 states and 54860 transitions. [2023-12-15 18:49:33,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 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) [2023-12-15 18:49:33,233 INFO L276 IsEmpty]: Start isEmpty. Operand 46565 states and 54860 transitions. [2023-12-15 18:49:33,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2023-12-15 18:49:33,242 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:49:33,242 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:49:33,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-15 18:49:33,242 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:49:33,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:49:33,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1479748523, now seen corresponding path program 1 times [2023-12-15 18:49:33,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:49:33,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328468532] [2023-12-15 18:49:33,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:49:33,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:49:33,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:49:33,520 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 384 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-15 18:49:33,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:49:33,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328468532] [2023-12-15 18:49:33,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328468532] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:49:33,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:49:33,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:49:33,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788446462] [2023-12-15 18:49:33,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:49:33,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:49:33,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:49:33,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:49:33,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:49:33,525 INFO L87 Difference]: Start difference. First operand 46565 states and 54860 transitions. Second operand has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 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) [2023-12-15 18:49:36,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:49:36,349 INFO L93 Difference]: Finished difference Result 112655 states and 134695 transitions. [2023-12-15 18:49:36,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:49:36,349 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 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 404 [2023-12-15 18:49:36,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:49:36,432 INFO L225 Difference]: With dead ends: 112655 [2023-12-15 18:49:36,432 INFO L226 Difference]: Without dead ends: 66091 [2023-12-15 18:49:36,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:49:36,625 INFO L413 NwaCegarLoop]: 1237 mSDtfsCounter, 661 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2279 mSolverCounterSat, 433 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 661 SdHoareTripleChecker+Valid, 1244 SdHoareTripleChecker+Invalid, 2712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 433 IncrementalHoareTripleChecker+Valid, 2279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-15 18:49:36,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [661 Valid, 1244 Invalid, 2712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [433 Valid, 2279 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-15 18:49:36,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66091 states. [2023-12-15 18:49:37,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66091 to 66091. [2023-12-15 18:49:37,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66091 states, 66090 states have (on average 1.1514752610077168) internal successors, (76101), 66090 states have internal predecessors, (76101), 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) [2023-12-15 18:49:37,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66091 states to 66091 states and 76101 transitions. [2023-12-15 18:49:37,719 INFO L78 Accepts]: Start accepts. Automaton has 66091 states and 76101 transitions. Word has length 404 [2023-12-15 18:49:37,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:49:37,719 INFO L495 AbstractCegarLoop]: Abstraction has 66091 states and 76101 transitions. [2023-12-15 18:49:37,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 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) [2023-12-15 18:49:37,720 INFO L276 IsEmpty]: Start isEmpty. Operand 66091 states and 76101 transitions. [2023-12-15 18:49:37,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2023-12-15 18:49:37,729 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:49:37,730 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:49:37,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-15 18:49:37,730 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:49:37,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:49:37,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1079190221, now seen corresponding path program 1 times [2023-12-15 18:49:37,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:49:37,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499168053] [2023-12-15 18:49:37,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:49:37,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:49:37,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:49:38,152 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 376 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2023-12-15 18:49:38,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:49:38,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499168053] [2023-12-15 18:49:38,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499168053] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:49:38,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:49:38,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:49:38,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284245305] [2023-12-15 18:49:38,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:49:38,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:49:38,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:49:38,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:49:38,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:49:38,154 INFO L87 Difference]: Start difference. First operand 66091 states and 76101 transitions. Second operand has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 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) [2023-12-15 18:49:41,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:49:41,042 INFO L93 Difference]: Finished difference Result 150956 states and 176238 transitions. [2023-12-15 18:49:41,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:49:41,043 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 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 420 [2023-12-15 18:49:41,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:49:41,139 INFO L225 Difference]: With dead ends: 150956 [2023-12-15 18:49:41,139 INFO L226 Difference]: Without dead ends: 84866 [2023-12-15 18:49:41,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:49:41,166 INFO L413 NwaCegarLoop]: 1272 mSDtfsCounter, 673 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2234 mSolverCounterSat, 446 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 673 SdHoareTripleChecker+Valid, 1279 SdHoareTripleChecker+Invalid, 2680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 446 IncrementalHoareTripleChecker+Valid, 2234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-15 18:49:41,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [673 Valid, 1279 Invalid, 2680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [446 Valid, 2234 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-15 18:49:41,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84866 states. [2023-12-15 18:49:41,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84866 to 84866. [2023-12-15 18:49:42,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84866 states, 84865 states have (on average 1.134825899958758) internal successors, (96307), 84865 states have internal predecessors, (96307), 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) [2023-12-15 18:49:42,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84866 states to 84866 states and 96307 transitions. [2023-12-15 18:49:42,508 INFO L78 Accepts]: Start accepts. Automaton has 84866 states and 96307 transitions. Word has length 420 [2023-12-15 18:49:42,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:49:42,509 INFO L495 AbstractCegarLoop]: Abstraction has 84866 states and 96307 transitions. [2023-12-15 18:49:42,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 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) [2023-12-15 18:49:42,510 INFO L276 IsEmpty]: Start isEmpty. Operand 84866 states and 96307 transitions. [2023-12-15 18:49:42,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2023-12-15 18:49:42,518 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:49:42,518 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:49:42,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-15 18:49:42,519 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:49:42,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:49:42,519 INFO L85 PathProgramCache]: Analyzing trace with hash -8906557, now seen corresponding path program 1 times [2023-12-15 18:49:42,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:49:42,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339722698] [2023-12-15 18:49:42,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:49:42,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:49:42,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:49:43,683 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 285 proven. 99 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2023-12-15 18:49:43,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:49:43,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339722698] [2023-12-15 18:49:43,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339722698] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:49:43,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [997016442] [2023-12-15 18:49:43,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:49:43,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:49:43,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:49:43,700 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) [2023-12-15 18:49:43,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 18:49:43,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:49:43,973 INFO L262 TraceCheckSpWp]: Trace formula consists of 551 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 18:49:44,012 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:49:44,185 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 191 proven. 0 refuted. 0 times theorem prover too weak. 309 trivial. 0 not checked. [2023-12-15 18:49:44,185 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:49:44,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [997016442] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:49:44,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:49:44,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-12-15 18:49:44,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709130388] [2023-12-15 18:49:44,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:49:44,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:49:44,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:49:44,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:49:44,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-12-15 18:49:44,187 INFO L87 Difference]: Start difference. First operand 84866 states and 96307 transitions. Second operand has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 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) Received shutdown request... [2023-12-15 18:49:46,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:49:46,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 423 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-12-15 18:49:46,439 INFO L413 NwaCegarLoop]: 1035 mSDtfsCounter, 677 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2011 mSolverCounterSat, 290 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 677 SdHoareTripleChecker+Valid, 1042 SdHoareTripleChecker+Invalid, 2301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 290 IncrementalHoareTripleChecker+Valid, 2011 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:49:46,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [677 Valid, 1042 Invalid, 2301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [290 Valid, 2011 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-15 18:49:46,440 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 18:49:46,452 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 18:49:46,452 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 18:49:46,452 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 18:49:46,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-15 18:49:46,653 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (84866states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (68415 states constructed, input type IntersectNwa). [2023-12-15 18:49:46,657 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:49:46,659 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 18:49:46,660 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 06:49:46 BoogieIcfgContainer [2023-12-15 18:49:46,661 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 18:49:46,661 INFO L158 Benchmark]: Toolchain (without parser) took 52167.24ms. Allocated memory was 189.8MB in the beginning and 2.9GB in the end (delta: 2.7GB). Free memory was 130.9MB in the beginning and 2.2GB in the end (delta: -2.0GB). Peak memory consumption was 658.6MB. Max. memory is 8.0GB. [2023-12-15 18:49:46,661 INFO L158 Benchmark]: CDTParser took 0.52ms. Allocated memory is still 189.8MB. Free memory is still 146.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 18:49:46,662 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1545.47ms. Allocated memory was 189.8MB in the beginning and 268.4MB in the end (delta: 78.6MB). Free memory was 130.9MB in the beginning and 189.5MB in the end (delta: -58.6MB). Peak memory consumption was 83.5MB. Max. memory is 8.0GB. [2023-12-15 18:49:46,662 INFO L158 Benchmark]: Boogie Procedure Inliner took 240.31ms. Allocated memory is still 268.4MB. Free memory was 189.5MB in the beginning and 117.2MB in the end (delta: 72.4MB). Peak memory consumption was 71.3MB. Max. memory is 8.0GB. [2023-12-15 18:49:46,662 INFO L158 Benchmark]: Boogie Preprocessor took 575.19ms. Allocated memory was 268.4MB in the beginning and 486.5MB in the end (delta: 218.1MB). Free memory was 117.2MB in the beginning and 361.5MB in the end (delta: -244.4MB). Peak memory consumption was 66.5MB. Max. memory is 8.0GB. [2023-12-15 18:49:46,662 INFO L158 Benchmark]: RCFGBuilder took 3872.02ms. Allocated memory was 486.5MB in the beginning and 638.6MB in the end (delta: 152.0MB). Free memory was 361.5MB in the beginning and 305.5MB in the end (delta: 56.0MB). Peak memory consumption was 208.6MB. Max. memory is 8.0GB. [2023-12-15 18:49:46,664 INFO L158 Benchmark]: TraceAbstraction took 45926.55ms. Allocated memory was 638.6MB in the beginning and 2.9GB in the end (delta: 2.3GB). Free memory was 305.0MB in the beginning and 2.2GB in the end (delta: -1.9GB). Peak memory consumption was 383.4MB. Max. memory is 8.0GB. [2023-12-15 18:49:46,665 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.52ms. Allocated memory is still 189.8MB. Free memory is still 146.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1545.47ms. Allocated memory was 189.8MB in the beginning and 268.4MB in the end (delta: 78.6MB). Free memory was 130.9MB in the beginning and 189.5MB in the end (delta: -58.6MB). Peak memory consumption was 83.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 240.31ms. Allocated memory is still 268.4MB. Free memory was 189.5MB in the beginning and 117.2MB in the end (delta: 72.4MB). Peak memory consumption was 71.3MB. Max. memory is 8.0GB. * Boogie Preprocessor took 575.19ms. Allocated memory was 268.4MB in the beginning and 486.5MB in the end (delta: 218.1MB). Free memory was 117.2MB in the beginning and 361.5MB in the end (delta: -244.4MB). Peak memory consumption was 66.5MB. Max. memory is 8.0GB. * RCFGBuilder took 3872.02ms. Allocated memory was 486.5MB in the beginning and 638.6MB in the end (delta: 152.0MB). Free memory was 361.5MB in the beginning and 305.5MB in the end (delta: 56.0MB). Peak memory consumption was 208.6MB. Max. memory is 8.0GB. * TraceAbstraction took 45926.55ms. Allocated memory was 638.6MB in the beginning and 2.9GB in the end (delta: 2.3GB). Free memory was 305.0MB in the beginning and 2.2GB in the end (delta: -1.9GB). Peak memory consumption was 383.4MB. 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: 220]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 220). Cancelled while NwaCegarLoop was constructing difference of abstraction (84866states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (68415 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 756 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 45.9s, OverallIterations: 12, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 35.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 9250 SdHoareTripleChecker+Valid, 32.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9250 mSDsluCounter, 9444 SdHoareTripleChecker+Invalid, 26.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 99 mSDsCounter, 6445 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 29835 IncrementalHoareTripleChecker+Invalid, 36280 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6445 mSolverCounterUnsat, 9345 mSDtfsCounter, 29835 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 464 GetRequests, 443 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=84866occurred in iteration=11, InterpolantAutomatonStates: 35, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 4.7s AutomataMinimizationTime, 11 MinimizatonAttempts, 8263 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.3s InterpolantComputationTime, 3844 NumberOfCodeBlocks, 3844 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 3831 ConstructedInterpolants, 0 QuantifiedInterpolants, 10519 SizeOfPredicates, 0 NumberOfNonLiveVariables, 551 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 13 InterpolantComputations, 12 PerfectInterpolantSequences, 3480/3579 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