/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 false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label01.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 12:18:46,503 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 12:18:46,539 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 12:18:46,542 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 12:18:46,543 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 12:18:46,556 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 12:18:46,557 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 12:18:46,557 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 12:18:46,558 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 12:18:46,558 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 12:18:46,558 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 12:18:46,558 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 12:18:46,559 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 12:18:46,559 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 12:18:46,559 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 12:18:46,559 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 12:18:46,560 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 12:18:46,560 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 12:18:46,560 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 12:18:46,560 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 12:18:46,560 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 12:18:46,561 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 12:18:46,561 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 12:18:46,561 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 12:18:46,561 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 12:18:46,561 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 12:18:46,562 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 12:18:46,562 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 12:18:46,562 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 12:18:46,562 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 12:18:46,562 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 12:18:46,562 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 12:18:46,563 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 12:18:46,563 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 12:18:46,563 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 12:18:46,563 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 12:18:46,563 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 12:18:46,563 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 12:18:46,564 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 12:18:46,564 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 12:18:46,564 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 12:18:46,564 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 12:18:46,564 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 12:18:46,564 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 12:18:46,737 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 12:18:46,755 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 12:18:46,756 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 12:18:46,757 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 12:18:46,757 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 12:18:46,758 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label01.c [2023-12-20 12:18:47,919 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 12:18:48,327 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 12:18:48,328 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label01.c [2023-12-20 12:18:48,355 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c0d23a53/fd6ea8a8ebd144c4a6dbe2e9cf634369/FLAG6001f7f2a [2023-12-20 12:18:48,503 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c0d23a53/fd6ea8a8ebd144c4a6dbe2e9cf634369 [2023-12-20 12:18:48,506 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 12:18:48,507 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 12:18:48,510 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 12:18:48,510 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 12:18:48,514 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 12:18:48,514 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 12:18:48" (1/1) ... [2023-12-20 12:18:48,515 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4eb347c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:18:48, skipping insertion in model container [2023-12-20 12:18:48,515 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 12:18:48" (1/1) ... [2023-12-20 12:18:48,605 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 12:18:48,872 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label01.c[6487,6500] [2023-12-20 12:18:48,915 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label01.c[12042,12055] [2023-12-20 12:18:49,441 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 12:18:49,451 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 12:18:49,478 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label01.c[6487,6500] [2023-12-20 12:18:49,488 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label01.c[12042,12055] [2023-12-20 12:18:49,813 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 12:18:49,831 INFO L206 MainTranslator]: Completed translation [2023-12-20 12:18:49,833 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:18:49 WrapperNode [2023-12-20 12:18:49,833 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 12:18:49,834 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 12:18:49,834 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 12:18:49,834 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 12:18:49,838 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:18:49" (1/1) ... [2023-12-20 12:18:49,921 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:18:49" (1/1) ... [2023-12-20 12:18:50,089 INFO L138 Inliner]: procedures = 35, calls = 20, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 4981 [2023-12-20 12:18:50,090 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 12:18:50,091 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 12:18:50,091 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 12:18:50,091 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 12:18:50,098 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:18:49" (1/1) ... [2023-12-20 12:18:50,099 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:18:49" (1/1) ... [2023-12-20 12:18:50,169 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:18:49" (1/1) ... [2023-12-20 12:18:50,348 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]. [2023-12-20 12:18:50,349 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:18:49" (1/1) ... [2023-12-20 12:18:50,349 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:18:49" (1/1) ... [2023-12-20 12:18:50,493 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:18:49" (1/1) ... [2023-12-20 12:18:50,531 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:18:49" (1/1) ... [2023-12-20 12:18:50,563 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:18:49" (1/1) ... [2023-12-20 12:18:50,582 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:18:49" (1/1) ... [2023-12-20 12:18:50,640 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 12:18:50,641 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 12:18:50,642 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 12:18:50,642 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 12:18:50,642 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:18:49" (1/1) ... [2023-12-20 12:18:50,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 12:18:50,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:18:50,666 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) [2023-12-20 12:18:50,674 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 [2023-12-20 12:18:50,691 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 12:18:50,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 12:18:50,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 12:18:50,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 12:18:50,760 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 12:18:50,762 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 12:18:53,769 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 12:18:53,813 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 12:18:53,813 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-20 12:18:53,813 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 12:18:53 BoogieIcfgContainer [2023-12-20 12:18:53,813 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 12:18:53,815 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 12:18:53,815 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 12:18:53,817 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 12:18:53,817 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 12:18:48" (1/3) ... [2023-12-20 12:18:53,818 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@591836dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 12:18:53, skipping insertion in model container [2023-12-20 12:18:53,818 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:18:49" (2/3) ... [2023-12-20 12:18:53,818 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@591836dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 12:18:53, skipping insertion in model container [2023-12-20 12:18:53,818 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 12:18:53" (3/3) ... [2023-12-20 12:18:53,819 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label01.c [2023-12-20 12:18:53,830 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 12:18:53,831 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-20 12:18:53,875 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 12:18:53,879 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;@67184e14, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 12:18:53,879 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-20 12:18:53,885 INFO L276 IsEmpty]: Start isEmpty. Operand has 809 states, 806 states have (on average 1.978908188585608) internal successors, (1595), 808 states have internal predecessors, (1595), 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) [2023-12-20 12:18:53,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-20 12:18:53,889 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:18:53,890 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:18:53,890 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:18:53,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:18:53,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1258292883, now seen corresponding path program 1 times [2023-12-20 12:18:53,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:18:53,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529931380] [2023-12-20 12:18:53,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:18:53,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:18:53,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:18:54,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:18:54,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:18:54,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529931380] [2023-12-20 12:18:54,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529931380] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:18:54,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:18:54,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 12:18:54,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952388492] [2023-12-20 12:18:54,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:18:54,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 12:18:54,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:18:54,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 12:18:54,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 12:18:54,094 INFO L87 Difference]: Start difference. First operand has 809 states, 806 states have (on average 1.978908188585608) internal successors, (1595), 808 states have internal predecessors, (1595), 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 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:18:54,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:18:54,184 INFO L93 Difference]: Finished difference Result 1597 states and 3151 transitions. [2023-12-20 12:18:54,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 12:18:54,186 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-12-20 12:18:54,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:18:54,202 INFO L225 Difference]: With dead ends: 1597 [2023-12-20 12:18:54,202 INFO L226 Difference]: Without dead ends: 805 [2023-12-20 12:18:54,208 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 [2023-12-20 12:18:54,211 INFO L413 NwaCegarLoop]: 1523 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1523 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:18:54,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1523 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:18:54,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2023-12-20 12:18:54,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 805. [2023-12-20 12:18:54,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 803 states have (on average 1.8978829389788294) internal successors, (1524), 804 states have internal predecessors, (1524), 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) [2023-12-20 12:18:54,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 1524 transitions. [2023-12-20 12:18:54,286 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 1524 transitions. Word has length 17 [2023-12-20 12:18:54,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:18:54,286 INFO L495 AbstractCegarLoop]: Abstraction has 805 states and 1524 transitions. [2023-12-20 12:18:54,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:18:54,286 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 1524 transitions. [2023-12-20 12:18:54,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-20 12:18:54,287 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:18:54,288 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:18:54,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 12:18:54,288 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:18:54,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:18:54,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1845098897, now seen corresponding path program 1 times [2023-12-20 12:18:54,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:18:54,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489784142] [2023-12-20 12:18:54,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:18:54,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:18:54,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:18:54,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:18:54,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:18:54,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489784142] [2023-12-20 12:18:54,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489784142] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:18:54,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:18:54,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 12:18:54,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996243599] [2023-12-20 12:18:54,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:18:54,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 12:18:54,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:18:54,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 12:18:54,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 12:18:54,488 INFO L87 Difference]: Start difference. First operand 805 states and 1524 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:18:54,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:18:54,570 INFO L93 Difference]: Finished difference Result 839 states and 1576 transitions. [2023-12-20 12:18:54,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 12:18:54,571 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-12-20 12:18:54,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:18:54,573 INFO L225 Difference]: With dead ends: 839 [2023-12-20 12:18:54,573 INFO L226 Difference]: Without dead ends: 805 [2023-12-20 12:18:54,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 12:18:54,575 INFO L413 NwaCegarLoop]: 1521 mSDtfsCounter, 0 mSDsluCounter, 3022 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4543 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 12:18:54,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4543 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 12:18:54,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2023-12-20 12:18:54,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 805. [2023-12-20 12:18:54,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 803 states have (on average 1.8779576587795765) internal successors, (1508), 804 states have internal predecessors, (1508), 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) [2023-12-20 12:18:54,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 1508 transitions. [2023-12-20 12:18:54,586 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 1508 transitions. Word has length 17 [2023-12-20 12:18:54,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:18:54,587 INFO L495 AbstractCegarLoop]: Abstraction has 805 states and 1508 transitions. [2023-12-20 12:18:54,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:18:54,587 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 1508 transitions. [2023-12-20 12:18:54,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-20 12:18:54,588 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:18:54,588 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] [2023-12-20 12:18:54,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 12:18:54,588 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:18:54,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:18:54,589 INFO L85 PathProgramCache]: Analyzing trace with hash 249094943, now seen corresponding path program 1 times [2023-12-20 12:18:54,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:18:54,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061462494] [2023-12-20 12:18:54,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:18:54,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:18:54,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:18:54,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:18:54,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:18:54,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061462494] [2023-12-20 12:18:54,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061462494] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:18:54,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:18:54,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 12:18:54,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245377782] [2023-12-20 12:18:54,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:18:54,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 12:18:54,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:18:54,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 12:18:54,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 12:18:54,659 INFO L87 Difference]: Start difference. First operand 805 states and 1508 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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) [2023-12-20 12:18:54,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:18:54,751 INFO L93 Difference]: Finished difference Result 991 states and 1802 transitions. [2023-12-20 12:18:54,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 12:18:54,752 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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 32 [2023-12-20 12:18:54,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:18:54,755 INFO L225 Difference]: With dead ends: 991 [2023-12-20 12:18:54,755 INFO L226 Difference]: Without dead ends: 960 [2023-12-20 12:18:54,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-20 12:18:54,756 INFO L413 NwaCegarLoop]: 1499 mSDtfsCounter, 4669 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4669 SdHoareTripleChecker+Valid, 1742 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:18:54,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4669 Valid, 1742 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:18:54,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2023-12-20 12:18:54,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 834. [2023-12-20 12:18:54,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 834 states, 832 states have (on average 1.8677884615384615) internal successors, (1554), 833 states have internal predecessors, (1554), 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) [2023-12-20 12:18:54,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 1554 transitions. [2023-12-20 12:18:54,772 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 1554 transitions. Word has length 32 [2023-12-20 12:18:54,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:18:54,772 INFO L495 AbstractCegarLoop]: Abstraction has 834 states and 1554 transitions. [2023-12-20 12:18:54,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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) [2023-12-20 12:18:54,773 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 1554 transitions. [2023-12-20 12:18:54,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-20 12:18:54,774 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:18:54,774 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] [2023-12-20 12:18:54,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 12:18:54,774 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:18:54,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:18:54,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1262463601, now seen corresponding path program 1 times [2023-12-20 12:18:54,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:18:54,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30038968] [2023-12-20 12:18:54,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:18:54,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:18:54,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:18:54,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:18:54,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:18:54,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30038968] [2023-12-20 12:18:54,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30038968] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:18:54,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:18:54,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 12:18:54,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896426693] [2023-12-20 12:18:54,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:18:54,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 12:18:54,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:18:54,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 12:18:54,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:18:54,829 INFO L87 Difference]: Start difference. First operand 834 states and 1554 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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) [2023-12-20 12:18:54,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:18:54,861 INFO L93 Difference]: Finished difference Result 943 states and 1725 transitions. [2023-12-20 12:18:54,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 12:18:54,861 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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 34 [2023-12-20 12:18:54,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:18:54,864 INFO L225 Difference]: With dead ends: 943 [2023-12-20 12:18:54,864 INFO L226 Difference]: Without dead ends: 883 [2023-12-20 12:18:54,864 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 [2023-12-20 12:18:54,865 INFO L413 NwaCegarLoop]: 1501 mSDtfsCounter, 1466 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1466 SdHoareTripleChecker+Valid, 1542 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:18:54,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1466 Valid, 1542 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:18:54,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2023-12-20 12:18:54,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 879. [2023-12-20 12:18:54,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 879 states, 877 states have (on average 1.8494868871151653) internal successors, (1622), 878 states have internal predecessors, (1622), 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) [2023-12-20 12:18:54,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 1622 transitions. [2023-12-20 12:18:54,879 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 1622 transitions. Word has length 34 [2023-12-20 12:18:54,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:18:54,879 INFO L495 AbstractCegarLoop]: Abstraction has 879 states and 1622 transitions. [2023-12-20 12:18:54,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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) [2023-12-20 12:18:54,879 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 1622 transitions. [2023-12-20 12:18:54,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-20 12:18:54,880 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:18:54,880 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] [2023-12-20 12:18:54,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 12:18:54,880 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:18:54,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:18:54,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1260318649, now seen corresponding path program 1 times [2023-12-20 12:18:54,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:18:54,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658053542] [2023-12-20 12:18:54,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:18:54,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:18:54,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:18:54,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:18:54,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:18:54,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658053542] [2023-12-20 12:18:54,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658053542] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:18:54,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:18:54,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 12:18:54,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699276404] [2023-12-20 12:18:54,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:18:54,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 12:18:54,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:18:54,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 12:18:54,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 12:18:54,977 INFO L87 Difference]: Start difference. First operand 879 states and 1622 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 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) [2023-12-20 12:18:55,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:18:55,039 INFO L93 Difference]: Finished difference Result 986 states and 1786 transitions. [2023-12-20 12:18:55,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 12:18:55,040 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 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 34 [2023-12-20 12:18:55,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:18:55,043 INFO L225 Difference]: With dead ends: 986 [2023-12-20 12:18:55,043 INFO L226 Difference]: Without dead ends: 881 [2023-12-20 12:18:55,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-20 12:18:55,046 INFO L413 NwaCegarLoop]: 1500 mSDtfsCounter, 2948 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2948 SdHoareTripleChecker+Valid, 1591 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:18:55,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2948 Valid, 1591 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:18:55,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2023-12-20 12:18:55,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 879. [2023-12-20 12:18:55,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 879 states, 877 states have (on average 1.847206385404789) internal successors, (1620), 878 states have internal predecessors, (1620), 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) [2023-12-20 12:18:55,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 1620 transitions. [2023-12-20 12:18:55,132 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 1620 transitions. Word has length 34 [2023-12-20 12:18:55,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:18:55,132 INFO L495 AbstractCegarLoop]: Abstraction has 879 states and 1620 transitions. [2023-12-20 12:18:55,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 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) [2023-12-20 12:18:55,133 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 1620 transitions. [2023-12-20 12:18:55,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-20 12:18:55,135 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:18:55,135 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] [2023-12-20 12:18:55,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 12:18:55,135 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:18:55,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:18:55,136 INFO L85 PathProgramCache]: Analyzing trace with hash -543584939, now seen corresponding path program 1 times [2023-12-20 12:18:55,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:18:55,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962741041] [2023-12-20 12:18:55,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:18:55,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:18:55,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:18:55,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:18:55,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:18:55,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962741041] [2023-12-20 12:18:55,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962741041] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:18:55,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:18:55,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 12:18:55,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579922790] [2023-12-20 12:18:55,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:18:55,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 12:18:55,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:18:55,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 12:18:55,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 12:18:55,240 INFO L87 Difference]: Start difference. First operand 879 states and 1620 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 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) [2023-12-20 12:18:55,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:18:55,275 INFO L93 Difference]: Finished difference Result 887 states and 1629 transitions. [2023-12-20 12:18:55,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 12:18:55,276 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 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 35 [2023-12-20 12:18:55,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:18:55,280 INFO L225 Difference]: With dead ends: 887 [2023-12-20 12:18:55,280 INFO L226 Difference]: Without dead ends: 885 [2023-12-20 12:18:55,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 12:18:55,283 INFO L413 NwaCegarLoop]: 1504 mSDtfsCounter, 1 mSDsluCounter, 3000 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4504 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:18:55,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4504 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:18:55,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2023-12-20 12:18:55,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 883. [2023-12-20 12:18:55,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 881 states have (on average 1.8422247446083995) internal successors, (1623), 882 states have internal predecessors, (1623), 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) [2023-12-20 12:18:55,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1623 transitions. [2023-12-20 12:18:55,301 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1623 transitions. Word has length 35 [2023-12-20 12:18:55,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:18:55,302 INFO L495 AbstractCegarLoop]: Abstraction has 883 states and 1623 transitions. [2023-12-20 12:18:55,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 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) [2023-12-20 12:18:55,303 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1623 transitions. [2023-12-20 12:18:55,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-20 12:18:55,306 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:18:55,306 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] [2023-12-20 12:18:55,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 12:18:55,306 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:18:55,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:18:55,307 INFO L85 PathProgramCache]: Analyzing trace with hash -709644761, now seen corresponding path program 1 times [2023-12-20 12:18:55,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:18:55,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553044810] [2023-12-20 12:18:55,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:18:55,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:18:55,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:18:55,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:18:55,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:18:55,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553044810] [2023-12-20 12:18:55,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553044810] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:18:55,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:18:55,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 12:18:55,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852450985] [2023-12-20 12:18:55,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:18:55,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 12:18:55,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:18:55,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 12:18:55,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:18:55,335 INFO L87 Difference]: Start difference. First operand 883 states and 1623 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2023-12-20 12:18:55,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:18:55,358 INFO L93 Difference]: Finished difference Result 1085 states and 1923 transitions. [2023-12-20 12:18:55,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 12:18:55,358 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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 36 [2023-12-20 12:18:55,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:18:55,361 INFO L225 Difference]: With dead ends: 1085 [2023-12-20 12:18:55,361 INFO L226 Difference]: Without dead ends: 976 [2023-12-20 12:18:55,363 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 [2023-12-20 12:18:55,364 INFO L413 NwaCegarLoop]: 1520 mSDtfsCounter, 1473 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1473 SdHoareTripleChecker+Valid, 1577 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:18:55,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1473 Valid, 1577 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:18:55,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 976 states. [2023-12-20 12:18:55,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 976 to 974. [2023-12-20 12:18:55,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 974 states, 972 states have (on average 1.8045267489711934) internal successors, (1754), 973 states have internal predecessors, (1754), 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) [2023-12-20 12:18:55,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 974 states to 974 states and 1754 transitions. [2023-12-20 12:18:55,379 INFO L78 Accepts]: Start accepts. Automaton has 974 states and 1754 transitions. Word has length 36 [2023-12-20 12:18:55,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:18:55,379 INFO L495 AbstractCegarLoop]: Abstraction has 974 states and 1754 transitions. [2023-12-20 12:18:55,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2023-12-20 12:18:55,379 INFO L276 IsEmpty]: Start isEmpty. Operand 974 states and 1754 transitions. [2023-12-20 12:18:55,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-20 12:18:55,380 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:18:55,380 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] [2023-12-20 12:18:55,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 12:18:55,380 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:18:55,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:18:55,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1598378201, now seen corresponding path program 1 times [2023-12-20 12:18:55,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:18:55,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590376987] [2023-12-20 12:18:55,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:18:55,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:18:55,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:18:55,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:18:55,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:18:55,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590376987] [2023-12-20 12:18:55,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590376987] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:18:55,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:18:55,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 12:18:55,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411054771] [2023-12-20 12:18:55,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:18:55,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 12:18:55,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:18:55,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 12:18:55,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:18:55,408 INFO L87 Difference]: Start difference. First operand 974 states and 1754 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2023-12-20 12:18:55,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:18:55,432 INFO L93 Difference]: Finished difference Result 1342 states and 2288 transitions. [2023-12-20 12:18:55,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 12:18:55,432 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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 36 [2023-12-20 12:18:55,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:18:55,435 INFO L225 Difference]: With dead ends: 1342 [2023-12-20 12:18:55,436 INFO L226 Difference]: Without dead ends: 1142 [2023-12-20 12:18:55,436 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 [2023-12-20 12:18:55,437 INFO L413 NwaCegarLoop]: 1530 mSDtfsCounter, 1475 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1475 SdHoareTripleChecker+Valid, 1583 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:18:55,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1475 Valid, 1583 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:18:55,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1142 states. [2023-12-20 12:18:55,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1142 to 1140. [2023-12-20 12:18:55,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1140 states, 1138 states have (on average 1.7434094903339192) internal successors, (1984), 1139 states have internal predecessors, (1984), 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) [2023-12-20 12:18:55,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1140 states to 1140 states and 1984 transitions. [2023-12-20 12:18:55,454 INFO L78 Accepts]: Start accepts. Automaton has 1140 states and 1984 transitions. Word has length 36 [2023-12-20 12:18:55,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:18:55,455 INFO L495 AbstractCegarLoop]: Abstraction has 1140 states and 1984 transitions. [2023-12-20 12:18:55,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2023-12-20 12:18:55,456 INFO L276 IsEmpty]: Start isEmpty. Operand 1140 states and 1984 transitions. [2023-12-20 12:18:55,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-20 12:18:55,456 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:18:55,457 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] [2023-12-20 12:18:55,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 12:18:55,457 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:18:55,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:18:55,457 INFO L85 PathProgramCache]: Analyzing trace with hash -566209588, now seen corresponding path program 1 times [2023-12-20 12:18:55,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:18:55,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267067965] [2023-12-20 12:18:55,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:18:55,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:18:55,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:18:55,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:18:55,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:18:55,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267067965] [2023-12-20 12:18:55,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267067965] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:18:55,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:18:55,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 12:18:55,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523518554] [2023-12-20 12:18:55,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:18:55,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 12:18:55,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:18:55,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 12:18:55,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:18:55,506 INFO L87 Difference]: Start difference. First operand 1140 states and 1984 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2023-12-20 12:18:55,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:18:55,531 INFO L93 Difference]: Finished difference Result 1531 states and 2558 transitions. [2023-12-20 12:18:55,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 12:18:55,532 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 38 [2023-12-20 12:18:55,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:18:55,536 INFO L225 Difference]: With dead ends: 1531 [2023-12-20 12:18:55,538 INFO L226 Difference]: Without dead ends: 1312 [2023-12-20 12:18:55,539 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 [2023-12-20 12:18:55,541 INFO L413 NwaCegarLoop]: 1535 mSDtfsCounter, 1474 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 1584 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:18:55,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 1584 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:18:55,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1312 states. [2023-12-20 12:18:55,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1312 to 1310. [2023-12-20 12:18:55,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1310 states, 1308 states have (on average 1.698776758409786) internal successors, (2222), 1309 states have internal predecessors, (2222), 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) [2023-12-20 12:18:55,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1310 states to 1310 states and 2222 transitions. [2023-12-20 12:18:55,561 INFO L78 Accepts]: Start accepts. Automaton has 1310 states and 2222 transitions. Word has length 38 [2023-12-20 12:18:55,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:18:55,562 INFO L495 AbstractCegarLoop]: Abstraction has 1310 states and 2222 transitions. [2023-12-20 12:18:55,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2023-12-20 12:18:55,562 INFO L276 IsEmpty]: Start isEmpty. Operand 1310 states and 2222 transitions. [2023-12-20 12:18:55,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-20 12:18:55,562 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:18:55,562 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] [2023-12-20 12:18:55,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 12:18:55,563 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:18:55,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:18:55,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1873515207, now seen corresponding path program 1 times [2023-12-20 12:18:55,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:18:55,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467370512] [2023-12-20 12:18:55,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:18:55,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:18:55,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:18:55,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:18:55,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:18:55,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467370512] [2023-12-20 12:18:55,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467370512] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:18:55,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:18:55,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 12:18:55,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248826169] [2023-12-20 12:18:55,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:18:55,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 12:18:55,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:18:55,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 12:18:55,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 12:18:55,631 INFO L87 Difference]: Start difference. First operand 1310 states and 2222 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 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) [2023-12-20 12:19:00,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:19:00,687 INFO L93 Difference]: Finished difference Result 3565 states and 6531 transitions. [2023-12-20 12:19:00,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 12:19:00,688 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 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 47 [2023-12-20 12:19:00,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:19:00,722 INFO L225 Difference]: With dead ends: 3565 [2023-12-20 12:19:00,722 INFO L226 Difference]: Without dead ends: 2812 [2023-12-20 12:19:00,728 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 [2023-12-20 12:19:00,738 INFO L413 NwaCegarLoop]: 741 mSDtfsCounter, 2356 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5357 mSolverCounterSat, 1153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2356 SdHoareTripleChecker+Valid, 759 SdHoareTripleChecker+Invalid, 6510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1153 IncrementalHoareTripleChecker+Valid, 5357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-12-20 12:19:00,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2356 Valid, 759 Invalid, 6510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1153 Valid, 5357 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-12-20 12:19:00,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2812 states. [2023-12-20 12:19:00,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2812 to 2812. [2023-12-20 12:19:00,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2812 states, 2810 states have (on average 1.5430604982206406) internal successors, (4336), 2811 states have internal predecessors, (4336), 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) [2023-12-20 12:19:00,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2812 states to 2812 states and 4336 transitions. [2023-12-20 12:19:00,843 INFO L78 Accepts]: Start accepts. Automaton has 2812 states and 4336 transitions. Word has length 47 [2023-12-20 12:19:00,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:19:00,844 INFO L495 AbstractCegarLoop]: Abstraction has 2812 states and 4336 transitions. [2023-12-20 12:19:00,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 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) [2023-12-20 12:19:00,844 INFO L276 IsEmpty]: Start isEmpty. Operand 2812 states and 4336 transitions. [2023-12-20 12:19:00,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-20 12:19:00,844 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:19:00,844 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 12:19:00,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 12:19:00,845 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:19:00,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:19:00,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1445833490, now seen corresponding path program 1 times [2023-12-20 12:19:00,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:19:00,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128368829] [2023-12-20 12:19:00,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:19:00,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:19:00,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:19:00,897 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-20 12:19:00,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:19:00,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128368829] [2023-12-20 12:19:00,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128368829] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:19:00,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:19:00,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 12:19:00,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877657933] [2023-12-20 12:19:00,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:19:00,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 12:19:00,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:19:00,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 12:19:00,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 12:19:00,898 INFO L87 Difference]: Start difference. First operand 2812 states and 4336 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:19:00,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:19:00,970 INFO L93 Difference]: Finished difference Result 4536 states and 6784 transitions. [2023-12-20 12:19:00,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 12:19:00,971 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2023-12-20 12:19:00,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:19:00,981 INFO L225 Difference]: With dead ends: 4536 [2023-12-20 12:19:00,981 INFO L226 Difference]: Without dead ends: 4002 [2023-12-20 12:19:00,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-20 12:19:00,983 INFO L413 NwaCegarLoop]: 1543 mSDtfsCounter, 3055 mSDsluCounter, 1587 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3055 SdHoareTripleChecker+Valid, 3130 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:19:00,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3055 Valid, 3130 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:19:00,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4002 states. [2023-12-20 12:19:01,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4002 to 3344. [2023-12-20 12:19:01,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3344 states, 3342 states have (on average 1.521244763614602) internal successors, (5084), 3343 states have internal predecessors, (5084), 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) [2023-12-20 12:19:01,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3344 states to 3344 states and 5084 transitions. [2023-12-20 12:19:01,034 INFO L78 Accepts]: Start accepts. Automaton has 3344 states and 5084 transitions. Word has length 50 [2023-12-20 12:19:01,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:19:01,034 INFO L495 AbstractCegarLoop]: Abstraction has 3344 states and 5084 transitions. [2023-12-20 12:19:01,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:19:01,035 INFO L276 IsEmpty]: Start isEmpty. Operand 3344 states and 5084 transitions. [2023-12-20 12:19:01,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-20 12:19:01,035 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:19:01,035 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 12:19:01,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 12:19:01,035 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:19:01,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:19:01,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1960400366, now seen corresponding path program 1 times [2023-12-20 12:19:01,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:19:01,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198595699] [2023-12-20 12:19:01,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:19:01,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:19:01,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:19:01,085 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-20 12:19:01,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:19:01,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198595699] [2023-12-20 12:19:01,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198595699] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:19:01,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:19:01,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 12:19:01,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158014018] [2023-12-20 12:19:01,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:19:01,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 12:19:01,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:19:01,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 12:19:01,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 12:19:01,086 INFO L87 Difference]: Start difference. First operand 3344 states and 5084 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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) [2023-12-20 12:19:01,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:19:01,170 INFO L93 Difference]: Finished difference Result 5068 states and 7532 transitions. [2023-12-20 12:19:01,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 12:19:01,171 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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 50 [2023-12-20 12:19:01,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:19:01,181 INFO L225 Difference]: With dead ends: 5068 [2023-12-20 12:19:01,181 INFO L226 Difference]: Without dead ends: 4534 [2023-12-20 12:19:01,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-20 12:19:01,182 INFO L413 NwaCegarLoop]: 1544 mSDtfsCounter, 3043 mSDsluCounter, 1609 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3043 SdHoareTripleChecker+Valid, 3153 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:19:01,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3043 Valid, 3153 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:19:01,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4534 states. [2023-12-20 12:19:01,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4534 to 4144. [2023-12-20 12:19:01,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4144 states, 4142 states have (on average 1.4958957025591502) internal successors, (6196), 4143 states have internal predecessors, (6196), 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) [2023-12-20 12:19:01,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4144 states to 4144 states and 6196 transitions. [2023-12-20 12:19:01,248 INFO L78 Accepts]: Start accepts. Automaton has 4144 states and 6196 transitions. Word has length 50 [2023-12-20 12:19:01,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:19:01,248 INFO L495 AbstractCegarLoop]: Abstraction has 4144 states and 6196 transitions. [2023-12-20 12:19:01,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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) [2023-12-20 12:19:01,248 INFO L276 IsEmpty]: Start isEmpty. Operand 4144 states and 6196 transitions. [2023-12-20 12:19:01,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-20 12:19:01,248 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:19:01,249 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 12:19:01,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 12:19:01,249 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:19:01,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:19:01,249 INFO L85 PathProgramCache]: Analyzing trace with hash 2001029718, now seen corresponding path program 1 times [2023-12-20 12:19:01,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:19:01,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165689670] [2023-12-20 12:19:01,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:19:01,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:19:01,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:19:01,290 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:19:01,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:19:01,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165689670] [2023-12-20 12:19:01,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165689670] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:19:01,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:19:01,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 12:19:01,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226541907] [2023-12-20 12:19:01,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:19:01,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 12:19:01,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:19:01,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 12:19:01,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:19:01,291 INFO L87 Difference]: Start difference. First operand 4144 states and 6196 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2023-12-20 12:19:01,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:19:01,330 INFO L93 Difference]: Finished difference Result 5507 states and 8146 transitions. [2023-12-20 12:19:01,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 12:19:01,331 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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 52 [2023-12-20 12:19:01,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:19:01,339 INFO L225 Difference]: With dead ends: 5507 [2023-12-20 12:19:01,340 INFO L226 Difference]: Without dead ends: 3641 [2023-12-20 12:19:01,341 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 [2023-12-20 12:19:01,342 INFO L413 NwaCegarLoop]: 1529 mSDtfsCounter, 34 mSDsluCounter, 1491 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 3020 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:19:01,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 3020 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:19:01,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3641 states. [2023-12-20 12:19:01,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3641 to 3639. [2023-12-20 12:19:01,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3639 states, 3637 states have (on average 1.5108605993951059) internal successors, (5495), 3638 states have internal predecessors, (5495), 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) [2023-12-20 12:19:01,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3639 states to 3639 states and 5495 transitions. [2023-12-20 12:19:01,394 INFO L78 Accepts]: Start accepts. Automaton has 3639 states and 5495 transitions. Word has length 52 [2023-12-20 12:19:01,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:19:01,394 INFO L495 AbstractCegarLoop]: Abstraction has 3639 states and 5495 transitions. [2023-12-20 12:19:01,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2023-12-20 12:19:01,395 INFO L276 IsEmpty]: Start isEmpty. Operand 3639 states and 5495 transitions. [2023-12-20 12:19:01,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-20 12:19:01,395 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:19:01,395 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 12:19:01,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 12:19:01,395 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:19:01,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:19:01,396 INFO L85 PathProgramCache]: Analyzing trace with hash 626025683, now seen corresponding path program 1 times [2023-12-20 12:19:01,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:19:01,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11777626] [2023-12-20 12:19:01,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:19:01,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:19:01,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:19:01,444 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 12:19:01,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:19:01,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11777626] [2023-12-20 12:19:01,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11777626] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:19:01,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:19:01,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 12:19:01,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582743637] [2023-12-20 12:19:01,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:19:01,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 12:19:01,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:19:01,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 12:19:01,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 12:19:01,445 INFO L87 Difference]: Start difference. First operand 3639 states and 5495 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:19:01,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:19:01,526 INFO L93 Difference]: Finished difference Result 4799 states and 7155 transitions. [2023-12-20 12:19:01,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 12:19:01,526 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2023-12-20 12:19:01,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:19:01,534 INFO L225 Difference]: With dead ends: 4799 [2023-12-20 12:19:01,534 INFO L226 Difference]: Without dead ends: 4413 [2023-12-20 12:19:01,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-20 12:19:01,535 INFO L413 NwaCegarLoop]: 1541 mSDtfsCounter, 3043 mSDsluCounter, 1597 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3043 SdHoareTripleChecker+Valid, 3138 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:19:01,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3043 Valid, 3138 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:19:01,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4413 states. [2023-12-20 12:19:01,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4413 to 4023. [2023-12-20 12:19:01,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4023 states, 4021 states have (on average 1.501865207659786) internal successors, (6039), 4022 states have internal predecessors, (6039), 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) [2023-12-20 12:19:01,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4023 states to 4023 states and 6039 transitions. [2023-12-20 12:19:01,608 INFO L78 Accepts]: Start accepts. Automaton has 4023 states and 6039 transitions. Word has length 52 [2023-12-20 12:19:01,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:19:01,608 INFO L495 AbstractCegarLoop]: Abstraction has 4023 states and 6039 transitions. [2023-12-20 12:19:01,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:19:01,608 INFO L276 IsEmpty]: Start isEmpty. Operand 4023 states and 6039 transitions. [2023-12-20 12:19:01,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-20 12:19:01,609 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:19:01,609 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 12:19:01,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 12:19:01,609 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:19:01,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:19:01,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1629170632, now seen corresponding path program 1 times [2023-12-20 12:19:01,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:19:01,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426009329] [2023-12-20 12:19:01,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:19:01,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:19:01,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:19:01,657 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:19:01,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:19:01,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426009329] [2023-12-20 12:19:01,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426009329] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:19:01,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:19:01,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 12:19:01,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811473107] [2023-12-20 12:19:01,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:19:01,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 12:19:01,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:19:01,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 12:19:01,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:19:01,659 INFO L87 Difference]: Start difference. First operand 4023 states and 6039 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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) [2023-12-20 12:19:01,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:19:01,698 INFO L93 Difference]: Finished difference Result 4891 states and 7265 transitions. [2023-12-20 12:19:01,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 12:19:01,699 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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 53 [2023-12-20 12:19:01,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:19:01,703 INFO L225 Difference]: With dead ends: 4891 [2023-12-20 12:19:01,703 INFO L226 Difference]: Without dead ends: 3161 [2023-12-20 12:19:01,705 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 [2023-12-20 12:19:01,706 INFO L413 NwaCegarLoop]: 1522 mSDtfsCounter, 29 mSDsluCounter, 1483 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 3005 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:19:01,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 3005 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:19:01,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3161 states. [2023-12-20 12:19:01,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3161 to 3159. [2023-12-20 12:19:01,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3159 states, 3157 states have (on average 1.5194805194805194) internal successors, (4797), 3158 states have internal predecessors, (4797), 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) [2023-12-20 12:19:01,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3159 states to 3159 states and 4797 transitions. [2023-12-20 12:19:01,758 INFO L78 Accepts]: Start accepts. Automaton has 3159 states and 4797 transitions. Word has length 53 [2023-12-20 12:19:01,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:19:01,758 INFO L495 AbstractCegarLoop]: Abstraction has 3159 states and 4797 transitions. [2023-12-20 12:19:01,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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) [2023-12-20 12:19:01,759 INFO L276 IsEmpty]: Start isEmpty. Operand 3159 states and 4797 transitions. [2023-12-20 12:19:01,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-20 12:19:01,759 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:19:01,759 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 12:19:01,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 12:19:01,759 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:19:01,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:19:01,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1014743962, now seen corresponding path program 1 times [2023-12-20 12:19:01,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:19:01,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671591300] [2023-12-20 12:19:01,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:19:01,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:19:01,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:19:01,836 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:19:01,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:19:01,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671591300] [2023-12-20 12:19:01,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671591300] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:19:01,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:19:01,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 12:19:01,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217002732] [2023-12-20 12:19:01,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:19:01,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 12:19:01,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:19:01,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 12:19:01,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:19:01,837 INFO L87 Difference]: Start difference. First operand 3159 states and 4797 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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) [2023-12-20 12:19:01,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:19:01,866 INFO L93 Difference]: Finished difference Result 3595 states and 5402 transitions. [2023-12-20 12:19:01,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 12:19:01,866 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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 55 [2023-12-20 12:19:01,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:19:01,869 INFO L225 Difference]: With dead ends: 3595 [2023-12-20 12:19:01,869 INFO L226 Difference]: Without dead ends: 2729 [2023-12-20 12:19:01,870 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 [2023-12-20 12:19:01,871 INFO L413 NwaCegarLoop]: 1515 mSDtfsCounter, 26 mSDsluCounter, 1475 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 2990 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:19:01,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 2990 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:19:01,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2729 states. [2023-12-20 12:19:01,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2729 to 2727. [2023-12-20 12:19:01,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2727 states, 2725 states have (on average 1.5357798165137615) internal successors, (4185), 2726 states have internal predecessors, (4185), 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) [2023-12-20 12:19:01,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2727 states to 2727 states and 4185 transitions. [2023-12-20 12:19:01,909 INFO L78 Accepts]: Start accepts. Automaton has 2727 states and 4185 transitions. Word has length 55 [2023-12-20 12:19:01,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:19:01,909 INFO L495 AbstractCegarLoop]: Abstraction has 2727 states and 4185 transitions. [2023-12-20 12:19:01,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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) [2023-12-20 12:19:01,909 INFO L276 IsEmpty]: Start isEmpty. Operand 2727 states and 4185 transitions. [2023-12-20 12:19:01,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-20 12:19:01,910 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:19:01,910 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 12:19:01,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 12:19:01,910 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:19:01,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:19:01,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1240304108, now seen corresponding path program 1 times [2023-12-20 12:19:01,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:19:01,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214737449] [2023-12-20 12:19:01,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:19:01,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:19:01,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:19:03,869 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:19:03,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:19:03,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214737449] [2023-12-20 12:19:03,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214737449] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:19:03,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353045351] [2023-12-20 12:19:03,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:19:03,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:19:03,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:19:03,872 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) [2023-12-20 12:19:03,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 12:19:03,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:19:03,970 INFO L262 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-20 12:19:03,974 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:19:04,096 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 12:19:04,097 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:19:04,209 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 12:19:04,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [353045351] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:19:04,209 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:19:04,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 4] total 18 [2023-12-20 12:19:04,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037352652] [2023-12-20 12:19:04,210 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:19:04,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-20 12:19:04,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:19:04,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-20 12:19:04,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2023-12-20 12:19:04,211 INFO L87 Difference]: Start difference. First operand 2727 states and 4185 transitions. Second operand has 18 states, 18 states have (on average 8.722222222222221) internal successors, (157), 18 states have internal predecessors, (157), 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) [2023-12-20 12:19:06,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:19:06,705 INFO L93 Difference]: Finished difference Result 4880 states and 7028 transitions. [2023-12-20 12:19:06,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-12-20 12:19:06,706 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 8.722222222222221) internal successors, (157), 18 states have internal predecessors, (157), 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 57 [2023-12-20 12:19:06,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:19:06,712 INFO L225 Difference]: With dead ends: 4880 [2023-12-20 12:19:06,712 INFO L226 Difference]: Without dead ends: 4446 [2023-12-20 12:19:06,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1046 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=744, Invalid=2916, Unknown=0, NotChecked=0, Total=3660 [2023-12-20 12:19:06,718 INFO L413 NwaCegarLoop]: 1495 mSDtfsCounter, 17249 mSDsluCounter, 4791 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17249 SdHoareTripleChecker+Valid, 6286 SdHoareTripleChecker+Invalid, 684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 12:19:06,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17249 Valid, 6286 Invalid, 684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 638 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 12:19:06,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4446 states. [2023-12-20 12:19:06,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4446 to 4288. [2023-12-20 12:19:06,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4288 states, 4286 states have (on average 1.4304713019132058) internal successors, (6131), 4287 states have internal predecessors, (6131), 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) [2023-12-20 12:19:06,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4288 states to 4288 states and 6131 transitions. [2023-12-20 12:19:06,808 INFO L78 Accepts]: Start accepts. Automaton has 4288 states and 6131 transitions. Word has length 57 [2023-12-20 12:19:06,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:19:06,808 INFO L495 AbstractCegarLoop]: Abstraction has 4288 states and 6131 transitions. [2023-12-20 12:19:06,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 8.722222222222221) internal successors, (157), 18 states have internal predecessors, (157), 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) [2023-12-20 12:19:06,809 INFO L276 IsEmpty]: Start isEmpty. Operand 4288 states and 6131 transitions. [2023-12-20 12:19:06,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-20 12:19:06,812 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:19:06,812 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 12:19:06,818 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-20 12:19:07,017 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,SelfDestructingSolverStorable16 [2023-12-20 12:19:07,017 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:19:07,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:19:07,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1506068895, now seen corresponding path program 1 times [2023-12-20 12:19:07,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:19:07,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224576805] [2023-12-20 12:19:07,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:19:07,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:19:07,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:19:07,796 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:19:07,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:19:07,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224576805] [2023-12-20 12:19:07,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224576805] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:19:07,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51724368] [2023-12-20 12:19:07,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:19:07,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:19:07,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:19:07,798 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:19:07,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 12:19:07,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:19:07,874 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 12:19:07,875 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:19:08,326 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:19:08,326 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:19:08,889 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:19:08,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [51724368] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:19:08,889 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:19:08,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 32 [2023-12-20 12:19:08,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157131596] [2023-12-20 12:19:08,890 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:19:08,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-20 12:19:08,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:19:08,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-20 12:19:08,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=821, Unknown=0, NotChecked=0, Total=992 [2023-12-20 12:19:08,891 INFO L87 Difference]: Start difference. First operand 4288 states and 6131 transitions. Second operand has 32 states, 32 states have (on average 4.8125) internal successors, (154), 32 states have internal predecessors, (154), 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) [2023-12-20 12:19:09,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:19:09,835 INFO L93 Difference]: Finished difference Result 8256 states and 11147 transitions. [2023-12-20 12:19:09,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-20 12:19:09,835 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.8125) internal successors, (154), 32 states have internal predecessors, (154), 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 58 [2023-12-20 12:19:09,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:19:09,842 INFO L225 Difference]: With dead ends: 8256 [2023-12-20 12:19:09,842 INFO L226 Difference]: Without dead ends: 6526 [2023-12-20 12:19:09,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 504 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=530, Invalid=1822, Unknown=0, NotChecked=0, Total=2352 [2023-12-20 12:19:09,846 INFO L413 NwaCegarLoop]: 1493 mSDtfsCounter, 14876 mSDsluCounter, 9371 mSDsCounter, 0 mSdLazyCounter, 787 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14876 SdHoareTripleChecker+Valid, 10864 SdHoareTripleChecker+Invalid, 809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 12:19:09,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14876 Valid, 10864 Invalid, 809 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [22 Valid, 787 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 12:19:09,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6526 states. [2023-12-20 12:19:09,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6526 to 6194. [2023-12-20 12:19:09,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6194 states, 6192 states have (on average 1.368701550387597) internal successors, (8475), 6193 states have internal predecessors, (8475), 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) [2023-12-20 12:19:09,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6194 states to 6194 states and 8475 transitions. [2023-12-20 12:19:09,979 INFO L78 Accepts]: Start accepts. Automaton has 6194 states and 8475 transitions. Word has length 58 [2023-12-20 12:19:09,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:19:09,979 INFO L495 AbstractCegarLoop]: Abstraction has 6194 states and 8475 transitions. [2023-12-20 12:19:09,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.8125) internal successors, (154), 32 states have internal predecessors, (154), 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) [2023-12-20 12:19:09,980 INFO L276 IsEmpty]: Start isEmpty. Operand 6194 states and 8475 transitions. [2023-12-20 12:19:09,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-20 12:19:09,980 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:19:09,980 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 12:19:09,985 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-20 12:19:10,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-20 12:19:10,185 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:19:10,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:19:10,187 INFO L85 PathProgramCache]: Analyzing trace with hash 983464685, now seen corresponding path program 1 times [2023-12-20 12:19:10,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:19:10,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799247620] [2023-12-20 12:19:10,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:19:10,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:19:10,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:19:10,370 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:19:10,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:19:10,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799247620] [2023-12-20 12:19:10,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799247620] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:19:10,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [368643056] [2023-12-20 12:19:10,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:19:10,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:19:10,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:19:10,378 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:19:10,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 12:19:10,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:19:10,481 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 12:19:10,483 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:19:10,736 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:19:10,736 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:19:11,380 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:19:11,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [368643056] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:19:11,381 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:19:11,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 12] total 28 [2023-12-20 12:19:11,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308639761] [2023-12-20 12:19:11,381 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:19:11,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-20 12:19:11,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:19:11,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-20 12:19:11,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=615, Unknown=0, NotChecked=0, Total=756 [2023-12-20 12:19:11,382 INFO L87 Difference]: Start difference. First operand 6194 states and 8475 transitions. Second operand has 28 states, 28 states have (on average 5.357142857142857) internal successors, (150), 28 states have internal predecessors, (150), 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) [2023-12-20 12:19:11,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:19:11,850 INFO L93 Difference]: Finished difference Result 10799 states and 14247 transitions. [2023-12-20 12:19:11,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-20 12:19:11,850 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.357142857142857) internal successors, (150), 28 states have internal predecessors, (150), 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 58 [2023-12-20 12:19:11,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:19:11,860 INFO L225 Difference]: With dead ends: 10799 [2023-12-20 12:19:11,860 INFO L226 Difference]: Without dead ends: 7469 [2023-12-20 12:19:11,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=349, Invalid=1211, Unknown=0, NotChecked=0, Total=1560 [2023-12-20 12:19:11,865 INFO L413 NwaCegarLoop]: 1492 mSDtfsCounter, 13316 mSDsluCounter, 7656 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13316 SdHoareTripleChecker+Valid, 9148 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 12:19:11,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13316 Valid, 9148 Invalid, 434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 12:19:11,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7469 states. [2023-12-20 12:19:12,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7469 to 7287. [2023-12-20 12:19:12,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7287 states, 7285 states have (on average 1.3504461221688402) internal successors, (9838), 7286 states have internal predecessors, (9838), 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) [2023-12-20 12:19:12,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7287 states to 7287 states and 9838 transitions. [2023-12-20 12:19:12,088 INFO L78 Accepts]: Start accepts. Automaton has 7287 states and 9838 transitions. Word has length 58 [2023-12-20 12:19:12,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:19:12,088 INFO L495 AbstractCegarLoop]: Abstraction has 7287 states and 9838 transitions. [2023-12-20 12:19:12,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 5.357142857142857) internal successors, (150), 28 states have internal predecessors, (150), 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) [2023-12-20 12:19:12,088 INFO L276 IsEmpty]: Start isEmpty. Operand 7287 states and 9838 transitions. [2023-12-20 12:19:12,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-20 12:19:12,089 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:19:12,089 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 12:19:12,095 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-20 12:19:12,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:19:12,294 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:19:12,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:19:12,295 INFO L85 PathProgramCache]: Analyzing trace with hash -985944595, now seen corresponding path program 1 times [2023-12-20 12:19:12,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:19:12,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818298665] [2023-12-20 12:19:12,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:19:12,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:19:12,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:19:12,528 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:19:12,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:19:12,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818298665] [2023-12-20 12:19:12,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818298665] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:19:12,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [449501451] [2023-12-20 12:19:12,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:19:12,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:19:12,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:19:12,534 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:19:12,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-20 12:19:12,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:19:12,682 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 12:19:12,683 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:19:13,071 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:19:13,071 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:19:13,567 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:19:13,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [449501451] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:19:13,568 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:19:13,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 28 [2023-12-20 12:19:13,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421329175] [2023-12-20 12:19:13,568 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:19:13,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-20 12:19:13,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:19:13,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-20 12:19:13,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=604, Unknown=0, NotChecked=0, Total=756 [2023-12-20 12:19:13,569 INFO L87 Difference]: Start difference. First operand 7287 states and 9838 transitions. Second operand has 28 states, 28 states have (on average 5.178571428571429) internal successors, (145), 28 states have internal predecessors, (145), 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) [2023-12-20 12:19:14,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:19:14,183 INFO L93 Difference]: Finished difference Result 11943 states and 15626 transitions. [2023-12-20 12:19:14,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-20 12:19:14,184 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.178571428571429) internal successors, (145), 28 states have internal predecessors, (145), 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 58 [2023-12-20 12:19:14,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:19:14,193 INFO L225 Difference]: With dead ends: 11943 [2023-12-20 12:19:14,193 INFO L226 Difference]: Without dead ends: 7747 [2023-12-20 12:19:14,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=449, Invalid=1357, Unknown=0, NotChecked=0, Total=1806 [2023-12-20 12:19:14,199 INFO L413 NwaCegarLoop]: 1500 mSDtfsCounter, 13315 mSDsluCounter, 6200 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13315 SdHoareTripleChecker+Valid, 7700 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 12:19:14,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13315 Valid, 7700 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 12:19:14,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7747 states. [2023-12-20 12:19:14,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7747 to 7355. [2023-12-20 12:19:14,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7355 states, 7353 states have (on average 1.3440772473820208) internal successors, (9883), 7354 states have internal predecessors, (9883), 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) [2023-12-20 12:19:14,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7355 states to 7355 states and 9883 transitions. [2023-12-20 12:19:14,360 INFO L78 Accepts]: Start accepts. Automaton has 7355 states and 9883 transitions. Word has length 58 [2023-12-20 12:19:14,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:19:14,360 INFO L495 AbstractCegarLoop]: Abstraction has 7355 states and 9883 transitions. [2023-12-20 12:19:14,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 5.178571428571429) internal successors, (145), 28 states have internal predecessors, (145), 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) [2023-12-20 12:19:14,360 INFO L276 IsEmpty]: Start isEmpty. Operand 7355 states and 9883 transitions. [2023-12-20 12:19:14,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-20 12:19:14,361 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:19:14,361 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 12:19:14,373 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-20 12:19:14,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:19:14,565 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:19:14,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:19:14,566 INFO L85 PathProgramCache]: Analyzing trace with hash -171888270, now seen corresponding path program 1 times [2023-12-20 12:19:14,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:19:14,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022108781] [2023-12-20 12:19:14,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:19:14,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:19:14,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:19:15,190 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:19:15,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:19:15,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022108781] [2023-12-20 12:19:15,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022108781] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:19:15,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379772596] [2023-12-20 12:19:15,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:19:15,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:19:15,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:19:15,192 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:19:15,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-20 12:19:15,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:19:15,274 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-20 12:19:15,275 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:19:15,896 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:19:15,896 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:19:16,514 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:19:16,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [379772596] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:19:16,515 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:19:16,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 13] total 34 [2023-12-20 12:19:16,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594700411] [2023-12-20 12:19:16,515 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:19:16,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-20 12:19:16,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:19:16,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-20 12:19:16,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1011, Unknown=0, NotChecked=0, Total=1122 [2023-12-20 12:19:16,528 INFO L87 Difference]: Start difference. First operand 7355 states and 9883 transitions. Second operand has 34 states, 34 states have (on average 4.647058823529412) internal successors, (158), 34 states have internal predecessors, (158), 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) [2023-12-20 12:19:20,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:19:20,799 INFO L93 Difference]: Finished difference Result 13249 states and 17197 transitions. [2023-12-20 12:19:20,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2023-12-20 12:19:20,799 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 4.647058823529412) internal successors, (158), 34 states have internal predecessors, (158), 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 59 [2023-12-20 12:19:20,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:19:20,810 INFO L225 Difference]: With dead ends: 13249 [2023-12-20 12:19:20,810 INFO L226 Difference]: Without dead ends: 10225 [2023-12-20 12:19:20,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3199 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=2207, Invalid=9135, Unknown=0, NotChecked=0, Total=11342 [2023-12-20 12:19:20,817 INFO L413 NwaCegarLoop]: 1513 mSDtfsCounter, 12114 mSDsluCounter, 19911 mSDsCounter, 0 mSdLazyCounter, 1349 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12114 SdHoareTripleChecker+Valid, 21424 SdHoareTripleChecker+Invalid, 1439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-20 12:19:20,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12114 Valid, 21424 Invalid, 1439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1349 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-20 12:19:20,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10225 states. [2023-12-20 12:19:20,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10225 to 6122. [2023-12-20 12:19:20,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6122 states, 6120 states have (on average 1.3619281045751634) internal successors, (8335), 6121 states have internal predecessors, (8335), 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) [2023-12-20 12:19:20,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6122 states to 6122 states and 8335 transitions. [2023-12-20 12:19:20,993 INFO L78 Accepts]: Start accepts. Automaton has 6122 states and 8335 transitions. Word has length 59 [2023-12-20 12:19:20,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:19:20,994 INFO L495 AbstractCegarLoop]: Abstraction has 6122 states and 8335 transitions. [2023-12-20 12:19:20,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.647058823529412) internal successors, (158), 34 states have internal predecessors, (158), 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) [2023-12-20 12:19:20,995 INFO L276 IsEmpty]: Start isEmpty. Operand 6122 states and 8335 transitions. [2023-12-20 12:19:20,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-20 12:19:20,996 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:19:20,996 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 12:19:21,012 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-20 12:19:21,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:19:21,201 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:19:21,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:19:21,201 INFO L85 PathProgramCache]: Analyzing trace with hash 236649807, now seen corresponding path program 1 times [2023-12-20 12:19:21,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:19:21,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6458490] [2023-12-20 12:19:21,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:19:21,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:19:21,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:19:21,867 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:19:21,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:19:21,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6458490] [2023-12-20 12:19:21,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6458490] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:19:21,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660940030] [2023-12-20 12:19:21,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:19:21,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:19:21,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:19:21,869 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:19:21,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-20 12:19:21,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:19:21,947 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-20 12:19:21,948 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:19:22,551 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:19:22,552 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:19:23,379 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:19:23,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [660940030] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:19:23,379 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:19:23,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 31 [2023-12-20 12:19:23,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419739285] [2023-12-20 12:19:23,380 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:19:23,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-20 12:19:23,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:19:23,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-20 12:19:23,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=815, Unknown=0, NotChecked=0, Total=930 [2023-12-20 12:19:23,381 INFO L87 Difference]: Start difference. First operand 6122 states and 8335 transitions. Second operand has 31 states, 31 states have (on average 4.580645161290323) internal successors, (142), 31 states have internal predecessors, (142), 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) [2023-12-20 12:19:24,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:19:24,564 INFO L93 Difference]: Finished difference Result 6932 states and 9342 transitions. [2023-12-20 12:19:24,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-20 12:19:24,566 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.580645161290323) internal successors, (142), 31 states have internal predecessors, (142), 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 60 [2023-12-20 12:19:24,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:19:24,571 INFO L225 Difference]: With dead ends: 6932 [2023-12-20 12:19:24,571 INFO L226 Difference]: Without dead ends: 4489 [2023-12-20 12:19:24,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 382 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=533, Invalid=1819, Unknown=0, NotChecked=0, Total=2352 [2023-12-20 12:19:24,574 INFO L413 NwaCegarLoop]: 1493 mSDtfsCounter, 11161 mSDsluCounter, 14860 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11161 SdHoareTripleChecker+Valid, 16353 SdHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 12:19:24,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11161 Valid, 16353 Invalid, 495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 464 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 12:19:24,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4489 states. [2023-12-20 12:19:24,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4489 to 4413. [2023-12-20 12:19:24,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4413 states, 4411 states have (on average 1.4123781455452278) internal successors, (6230), 4412 states have internal predecessors, (6230), 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) [2023-12-20 12:19:24,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4413 states to 4413 states and 6230 transitions. [2023-12-20 12:19:24,731 INFO L78 Accepts]: Start accepts. Automaton has 4413 states and 6230 transitions. Word has length 60 [2023-12-20 12:19:24,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:19:24,731 INFO L495 AbstractCegarLoop]: Abstraction has 4413 states and 6230 transitions. [2023-12-20 12:19:24,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.580645161290323) internal successors, (142), 31 states have internal predecessors, (142), 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) [2023-12-20 12:19:24,731 INFO L276 IsEmpty]: Start isEmpty. Operand 4413 states and 6230 transitions. [2023-12-20 12:19:24,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-20 12:19:24,732 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:19:24,732 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2023-12-20 12:19:24,751 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-20 12:19:24,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:19:24,938 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:19:24,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:19:24,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1767313277, now seen corresponding path program 1 times [2023-12-20 12:19:24,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:19:24,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57441441] [2023-12-20 12:19:24,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:19:24,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:19:24,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:19:25,518 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 36 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:19:25,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:19:25,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57441441] [2023-12-20 12:19:25,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57441441] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:19:25,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337524427] [2023-12-20 12:19:25,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:19:25,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:19:25,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:19:25,520 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:19:25,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-20 12:19:25,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:19:25,615 INFO L262 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-20 12:19:25,617 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:19:26,334 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 40 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:19:26,335 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:19:27,584 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 36 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:19:27,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337524427] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:19:27,585 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:19:27,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 11] total 31 [2023-12-20 12:19:27,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18680049] [2023-12-20 12:19:27,586 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:19:27,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-20 12:19:27,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:19:27,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-20 12:19:27,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=869, Unknown=0, NotChecked=0, Total=992 [2023-12-20 12:19:27,589 INFO L87 Difference]: Start difference. First operand 4413 states and 6230 transitions. Second operand has 32 states, 32 states have (on average 7.125) internal successors, (228), 31 states have internal predecessors, (228), 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) [2023-12-20 12:19:29,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:19:29,127 INFO L93 Difference]: Finished difference Result 5671 states and 7795 transitions. [2023-12-20 12:19:29,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-20 12:19:29,127 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 7.125) internal successors, (228), 31 states have internal predecessors, (228), 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 97 [2023-12-20 12:19:29,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:19:29,131 INFO L225 Difference]: With dead ends: 5671 [2023-12-20 12:19:29,131 INFO L226 Difference]: Without dead ends: 4495 [2023-12-20 12:19:29,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 177 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 805 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=855, Invalid=3051, Unknown=0, NotChecked=0, Total=3906 [2023-12-20 12:19:29,133 INFO L413 NwaCegarLoop]: 1532 mSDtfsCounter, 18057 mSDsluCounter, 10817 mSDsCounter, 0 mSdLazyCounter, 970 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18057 SdHoareTripleChecker+Valid, 12349 SdHoareTripleChecker+Invalid, 999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 12:19:29,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18057 Valid, 12349 Invalid, 999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 970 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 12:19:29,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4495 states. [2023-12-20 12:19:29,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4495 to 4413. [2023-12-20 12:19:29,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4413 states, 4411 states have (on average 1.4082974382226252) internal successors, (6212), 4412 states have internal predecessors, (6212), 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) [2023-12-20 12:19:29,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4413 states to 4413 states and 6212 transitions. [2023-12-20 12:19:29,297 INFO L78 Accepts]: Start accepts. Automaton has 4413 states and 6212 transitions. Word has length 97 [2023-12-20 12:19:29,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:19:29,297 INFO L495 AbstractCegarLoop]: Abstraction has 4413 states and 6212 transitions. [2023-12-20 12:19:29,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 7.125) internal successors, (228), 31 states have internal predecessors, (228), 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) [2023-12-20 12:19:29,297 INFO L276 IsEmpty]: Start isEmpty. Operand 4413 states and 6212 transitions. [2023-12-20 12:19:29,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-20 12:19:29,298 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:19:29,298 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2023-12-20 12:19:29,303 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-20 12:19:29,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:19:29,504 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:19:29,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:19:29,504 INFO L85 PathProgramCache]: Analyzing trace with hash -350030467, now seen corresponding path program 1 times [2023-12-20 12:19:29,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:19:29,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912722294] [2023-12-20 12:19:29,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:19:29,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:19:29,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:19:30,007 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 19 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:19:30,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:19:30,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912722294] [2023-12-20 12:19:30,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912722294] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:19:30,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72221367] [2023-12-20 12:19:30,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:19:30,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:19:30,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:19:30,010 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:19:30,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-20 12:19:30,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:19:30,103 INFO L262 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-20 12:19:30,105 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:19:31,987 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 35 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:19:31,987 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:19:34,844 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 35 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:19:34,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [72221367] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:19:34,845 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:19:34,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 22, 20] total 52 [2023-12-20 12:19:34,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3222550] [2023-12-20 12:19:34,845 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:19:34,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-12-20 12:19:34,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:19:34,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-12-20 12:19:34,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=2412, Unknown=0, NotChecked=0, Total=2652 [2023-12-20 12:19:34,850 INFO L87 Difference]: Start difference. First operand 4413 states and 6212 transitions. Second operand has 52 states, 52 states have (on average 5.134615384615385) internal successors, (267), 52 states have internal predecessors, (267), 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) [2023-12-20 12:19:56,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:19:56,582 INFO L93 Difference]: Finished difference Result 7367 states and 9894 transitions. [2023-12-20 12:19:56,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2023-12-20 12:19:56,583 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 5.134615384615385) internal successors, (267), 52 states have internal predecessors, (267), 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 97 [2023-12-20 12:19:56,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:19:56,588 INFO L225 Difference]: With dead ends: 7367 [2023-12-20 12:19:56,588 INFO L226 Difference]: Without dead ends: 6235 [2023-12-20 12:19:56,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 154 SyntacticMatches, 1 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12168 ImplicationChecksByTransitivity, 21.2s TimeCoverageRelationStatistics Valid=4259, Invalid=33961, Unknown=0, NotChecked=0, Total=38220 [2023-12-20 12:19:56,596 INFO L413 NwaCegarLoop]: 1532 mSDtfsCounter, 28209 mSDsluCounter, 32494 mSDsCounter, 0 mSdLazyCounter, 2271 mSolverCounterSat, 216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28209 SdHoareTripleChecker+Valid, 34026 SdHoareTripleChecker+Invalid, 2487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 216 IncrementalHoareTripleChecker+Valid, 2271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-20 12:19:56,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28209 Valid, 34026 Invalid, 2487 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [216 Valid, 2271 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-20 12:19:56,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6235 states. [2023-12-20 12:19:56,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6235 to 5237. [2023-12-20 12:19:56,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5237 states, 5235 states have (on average 1.3751671442215856) internal successors, (7199), 5236 states have internal predecessors, (7199), 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) [2023-12-20 12:19:56,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5237 states to 5237 states and 7199 transitions. [2023-12-20 12:19:56,847 INFO L78 Accepts]: Start accepts. Automaton has 5237 states and 7199 transitions. Word has length 97 [2023-12-20 12:19:56,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:19:56,848 INFO L495 AbstractCegarLoop]: Abstraction has 5237 states and 7199 transitions. [2023-12-20 12:19:56,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 5.134615384615385) internal successors, (267), 52 states have internal predecessors, (267), 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) [2023-12-20 12:19:56,848 INFO L276 IsEmpty]: Start isEmpty. Operand 5237 states and 7199 transitions. [2023-12-20 12:19:56,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-20 12:19:56,849 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:19:56,849 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2023-12-20 12:19:56,856 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-20 12:19:57,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-12-20 12:19:57,055 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:19:57,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:19:57,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1400331381, now seen corresponding path program 1 times [2023-12-20 12:19:57,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:19:57,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30629459] [2023-12-20 12:19:57,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:19:57,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:19:57,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:19:57,607 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 28 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:19:57,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:19:57,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30629459] [2023-12-20 12:19:57,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30629459] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:19:57,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1920089683] [2023-12-20 12:19:57,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:19:57,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:19:57,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:19:57,621 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:19:57,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-20 12:19:57,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:19:57,725 INFO L262 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 12:19:57,727 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:19:58,237 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 30 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:19:58,237 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:19:59,809 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 28 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:19:59,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1920089683] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:19:59,810 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:19:59,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 11] total 31 [2023-12-20 12:19:59,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533902770] [2023-12-20 12:19:59,810 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:19:59,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-20 12:19:59,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:19:59,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-20 12:19:59,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=865, Unknown=0, NotChecked=0, Total=992 [2023-12-20 12:19:59,811 INFO L87 Difference]: Start difference. First operand 5237 states and 7199 transitions. Second operand has 32 states, 32 states have (on average 7.375) internal successors, (236), 31 states have internal predecessors, (236), 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) [2023-12-20 12:20:01,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:20:01,946 INFO L93 Difference]: Finished difference Result 12533 states and 16226 transitions. [2023-12-20 12:20:01,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-12-20 12:20:01,946 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 7.375) internal successors, (236), 31 states have internal predecessors, (236), 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 99 [2023-12-20 12:20:01,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:20:01,956 INFO L225 Difference]: With dead ends: 12533 [2023-12-20 12:20:01,957 INFO L226 Difference]: Without dead ends: 9849 [2023-12-20 12:20:01,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 181 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1286 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1228, Invalid=4322, Unknown=0, NotChecked=0, Total=5550 [2023-12-20 12:20:01,963 INFO L413 NwaCegarLoop]: 1531 mSDtfsCounter, 18188 mSDsluCounter, 13814 mSDsCounter, 0 mSdLazyCounter, 994 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18188 SdHoareTripleChecker+Valid, 15345 SdHoareTripleChecker+Invalid, 1029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 12:20:01,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18188 Valid, 15345 Invalid, 1029 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [35 Valid, 994 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 12:20:01,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9849 states. [2023-12-20 12:20:02,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9849 to 7959. [2023-12-20 12:20:02,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7959 states, 7957 states have (on average 1.3158225461857485) internal successors, (10470), 7958 states have internal predecessors, (10470), 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) [2023-12-20 12:20:02,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7959 states to 7959 states and 10470 transitions. [2023-12-20 12:20:02,427 INFO L78 Accepts]: Start accepts. Automaton has 7959 states and 10470 transitions. Word has length 99 [2023-12-20 12:20:02,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:20:02,427 INFO L495 AbstractCegarLoop]: Abstraction has 7959 states and 10470 transitions. [2023-12-20 12:20:02,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 7.375) internal successors, (236), 31 states have internal predecessors, (236), 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) [2023-12-20 12:20:02,428 INFO L276 IsEmpty]: Start isEmpty. Operand 7959 states and 10470 transitions. [2023-12-20 12:20:02,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-20 12:20:02,430 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:20:02,430 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2023-12-20 12:20:02,451 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-20 12:20:02,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-12-20 12:20:02,636 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:20:02,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:20:02,637 INFO L85 PathProgramCache]: Analyzing trace with hash 729792707, now seen corresponding path program 1 times [2023-12-20 12:20:02,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:20:02,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370638701] [2023-12-20 12:20:02,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:20:02,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:20:02,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:20:03,386 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 54 proven. 6 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-20 12:20:03,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:20:03,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370638701] [2023-12-20 12:20:03,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370638701] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:20:03,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368703476] [2023-12-20 12:20:03,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:20:03,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:20:03,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:20:03,387 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:20:03,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-20 12:20:03,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:20:03,498 INFO L262 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-20 12:20:03,501 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:20:04,831 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 13 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:20:04,832 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:20:07,208 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 13 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:20:07,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1368703476] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:20:07,208 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:20:07,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 21, 21] total 57 [2023-12-20 12:20:07,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142486275] [2023-12-20 12:20:07,208 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:20:07,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2023-12-20 12:20:07,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:20:07,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2023-12-20 12:20:07,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=288, Invalid=2904, Unknown=0, NotChecked=0, Total=3192 [2023-12-20 12:20:07,211 INFO L87 Difference]: Start difference. First operand 7959 states and 10470 transitions. Second operand has 57 states, 57 states have (on average 4.7368421052631575) internal successors, (270), 57 states have internal predecessors, (270), 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) [2023-12-20 12:20:49,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:20:49,248 INFO L93 Difference]: Finished difference Result 22962 states and 28530 transitions. [2023-12-20 12:20:49,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 259 states. [2023-12-20 12:20:49,248 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 4.7368421052631575) internal successors, (270), 57 states have internal predecessors, (270), 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 99 [2023-12-20 12:20:49,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:20:49,263 INFO L225 Difference]: With dead ends: 22962 [2023-12-20 12:20:49,263 INFO L226 Difference]: Without dead ends: 19878 [2023-12-20 12:20:49,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 472 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 311 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37361 ImplicationChecksByTransitivity, 39.1s TimeCoverageRelationStatistics Valid=13927, Invalid=83729, Unknown=0, NotChecked=0, Total=97656 [2023-12-20 12:20:49,271 INFO L413 NwaCegarLoop]: 1573 mSDtfsCounter, 31361 mSDsluCounter, 32127 mSDsCounter, 0 mSdLazyCounter, 3936 mSolverCounterSat, 422 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31361 SdHoareTripleChecker+Valid, 33700 SdHoareTripleChecker+Invalid, 4358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 422 IncrementalHoareTripleChecker+Valid, 3936 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-20 12:20:49,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31361 Valid, 33700 Invalid, 4358 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [422 Valid, 3936 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-20 12:20:49,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19878 states. [2023-12-20 12:20:49,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19878 to 10834. [2023-12-20 12:20:49,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10834 states, 10832 states have (on average 1.2880354505169866) internal successors, (13952), 10833 states have internal predecessors, (13952), 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) [2023-12-20 12:20:49,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10834 states to 10834 states and 13952 transitions. [2023-12-20 12:20:49,966 INFO L78 Accepts]: Start accepts. Automaton has 10834 states and 13952 transitions. Word has length 99 [2023-12-20 12:20:49,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:20:49,967 INFO L495 AbstractCegarLoop]: Abstraction has 10834 states and 13952 transitions. [2023-12-20 12:20:49,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 4.7368421052631575) internal successors, (270), 57 states have internal predecessors, (270), 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) [2023-12-20 12:20:49,967 INFO L276 IsEmpty]: Start isEmpty. Operand 10834 states and 13952 transitions. [2023-12-20 12:20:49,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-20 12:20:49,968 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:20:49,968 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2023-12-20 12:20:49,974 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-20 12:20:50,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-20 12:20:50,174 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:20:50,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:20:50,174 INFO L85 PathProgramCache]: Analyzing trace with hash -636645631, now seen corresponding path program 1 times [2023-12-20 12:20:50,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:20:50,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688579292] [2023-12-20 12:20:50,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:20:50,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:20:50,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:20:50,973 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 13 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:20:50,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:20:50,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688579292] [2023-12-20 12:20:50,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688579292] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:20:50,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656576876] [2023-12-20 12:20:50,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:20:50,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:20:50,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:20:50,981 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:20:50,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-20 12:20:51,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:20:51,083 INFO L262 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-20 12:20:51,085 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:20:52,750 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 23 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:20:52,750 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:20:55,142 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 23 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:20:55,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1656576876] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:20:55,143 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:20:55,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 18, 18] total 53 [2023-12-20 12:20:55,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778852563] [2023-12-20 12:20:55,143 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:20:55,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-12-20 12:20:55,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:20:55,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-12-20 12:20:55,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=2544, Unknown=0, NotChecked=0, Total=2756 [2023-12-20 12:20:55,144 INFO L87 Difference]: Start difference. First operand 10834 states and 13952 transitions. Second operand has 53 states, 53 states have (on average 5.169811320754717) internal successors, (274), 53 states have internal predecessors, (274), 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) [2023-12-20 12:21:11,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:21:11,533 INFO L93 Difference]: Finished difference Result 13602 states and 17266 transitions. [2023-12-20 12:21:11,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2023-12-20 12:21:11,534 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 5.169811320754717) internal successors, (274), 53 states have internal predecessors, (274), 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 99 [2023-12-20 12:21:11,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:21:11,541 INFO L225 Difference]: With dead ends: 13602 [2023-12-20 12:21:11,541 INFO L226 Difference]: Without dead ends: 11266 [2023-12-20 12:21:11,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2797 ImplicationChecksByTransitivity, 15.2s TimeCoverageRelationStatistics Valid=1854, Invalid=10578, Unknown=0, NotChecked=0, Total=12432 [2023-12-20 12:21:11,544 INFO L413 NwaCegarLoop]: 1489 mSDtfsCounter, 22819 mSDsluCounter, 29968 mSDsCounter, 0 mSdLazyCounter, 1809 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22819 SdHoareTripleChecker+Valid, 31457 SdHoareTripleChecker+Invalid, 1938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 1809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:21:11,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22819 Valid, 31457 Invalid, 1938 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [129 Valid, 1809 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-20 12:21:11,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11266 states. [2023-12-20 12:21:12,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11266 to 10846. [2023-12-20 12:21:12,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10846 states, 10844 states have (on average 1.2879011434894874) internal successors, (13966), 10845 states have internal predecessors, (13966), 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) [2023-12-20 12:21:12,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10846 states to 10846 states and 13966 transitions. [2023-12-20 12:21:12,374 INFO L78 Accepts]: Start accepts. Automaton has 10846 states and 13966 transitions. Word has length 99 [2023-12-20 12:21:12,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:21:12,374 INFO L495 AbstractCegarLoop]: Abstraction has 10846 states and 13966 transitions. [2023-12-20 12:21:12,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 5.169811320754717) internal successors, (274), 53 states have internal predecessors, (274), 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) [2023-12-20 12:21:12,375 INFO L276 IsEmpty]: Start isEmpty. Operand 10846 states and 13966 transitions. [2023-12-20 12:21:12,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-20 12:21:12,376 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:21:12,376 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2023-12-20 12:21:12,381 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-20 12:21:12,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-20 12:21:12,581 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:21:12,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:21:12,582 INFO L85 PathProgramCache]: Analyzing trace with hash 772410473, now seen corresponding path program 1 times [2023-12-20 12:21:12,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:21:12,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959101637] [2023-12-20 12:21:12,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:21:12,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:21:12,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:21:13,225 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 32 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:21:13,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:21:13,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959101637] [2023-12-20 12:21:13,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959101637] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:21:13,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254842625] [2023-12-20 12:21:13,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:21:13,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:21:13,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:21:13,228 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:21:13,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-20 12:21:13,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:21:13,368 INFO L262 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 43 conjunts are in the unsatisfiable core [2023-12-20 12:21:13,370 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:21:15,359 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 32 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:21:15,359 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:21:18,350 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 30 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:21:18,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254842625] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:21:18,350 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:21:18,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20, 21] total 58 [2023-12-20 12:21:18,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740561393] [2023-12-20 12:21:18,350 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:21:18,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2023-12-20 12:21:18,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:21:18,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2023-12-20 12:21:18,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=355, Invalid=2951, Unknown=0, NotChecked=0, Total=3306 [2023-12-20 12:21:18,352 INFO L87 Difference]: Start difference. First operand 10846 states and 13966 transitions. Second operand has 58 states, 58 states have (on average 4.637931034482759) internal successors, (269), 58 states have internal predecessors, (269), 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) [2023-12-20 12:22:00,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:22:00,493 INFO L93 Difference]: Finished difference Result 29573 states and 36579 transitions. [2023-12-20 12:22:00,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 286 states. [2023-12-20 12:22:00,493 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 4.637931034482759) internal successors, (269), 58 states have internal predecessors, (269), 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 99 [2023-12-20 12:22:00,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:22:00,511 INFO L225 Difference]: With dead ends: 29573 [2023-12-20 12:22:00,511 INFO L226 Difference]: Without dead ends: 23128 [2023-12-20 12:22:00,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 496 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 336 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45797 ImplicationChecksByTransitivity, 38.6s TimeCoverageRelationStatistics Valid=14530, Invalid=99376, Unknown=0, NotChecked=0, Total=113906 [2023-12-20 12:22:00,521 INFO L413 NwaCegarLoop]: 1612 mSDtfsCounter, 22296 mSDsluCounter, 34282 mSDsCounter, 0 mSdLazyCounter, 3842 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22296 SdHoareTripleChecker+Valid, 35894 SdHoareTripleChecker+Invalid, 4116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 3842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-20 12:22:00,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22296 Valid, 35894 Invalid, 4116 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [274 Valid, 3842 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-20 12:22:00,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23128 states. [2023-12-20 12:22:02,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23128 to 20368. [2023-12-20 12:22:02,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20368 states, 20366 states have (on average 1.2540999705391338) internal successors, (25541), 20367 states have internal predecessors, (25541), 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) [2023-12-20 12:22:02,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20368 states to 20368 states and 25541 transitions. [2023-12-20 12:22:02,439 INFO L78 Accepts]: Start accepts. Automaton has 20368 states and 25541 transitions. Word has length 99 [2023-12-20 12:22:02,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:22:02,439 INFO L495 AbstractCegarLoop]: Abstraction has 20368 states and 25541 transitions. [2023-12-20 12:22:02,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 4.637931034482759) internal successors, (269), 58 states have internal predecessors, (269), 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) [2023-12-20 12:22:02,439 INFO L276 IsEmpty]: Start isEmpty. Operand 20368 states and 25541 transitions. [2023-12-20 12:22:02,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-20 12:22:02,441 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:22:02,441 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2023-12-20 12:22:02,453 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-20 12:22:02,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-20 12:22:02,647 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:22:02,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:22:02,647 INFO L85 PathProgramCache]: Analyzing trace with hash 547688356, now seen corresponding path program 1 times [2023-12-20 12:22:02,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:22:02,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679426072] [2023-12-20 12:22:02,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:22:02,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:22:02,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:22:03,545 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 28 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:22:03,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:22:03,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679426072] [2023-12-20 12:22:03,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679426072] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:22:03,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51919899] [2023-12-20 12:22:03,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:22:03,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:22:03,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:22:03,546 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:22:03,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-20 12:22:03,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:22:03,646 INFO L262 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 39 conjunts are in the unsatisfiable core [2023-12-20 12:22:03,648 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:22:05,615 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 28 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:22:05,615 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:22:08,610 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 28 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:22:08,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [51919899] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:22:08,610 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:22:08,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 19] total 60 [2023-12-20 12:22:08,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987618507] [2023-12-20 12:22:08,611 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:22:08,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2023-12-20 12:22:08,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:22:08,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2023-12-20 12:22:08,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=370, Invalid=3170, Unknown=0, NotChecked=0, Total=3540 [2023-12-20 12:22:08,612 INFO L87 Difference]: Start difference. First operand 20368 states and 25541 transitions. Second operand has 60 states, 60 states have (on average 4.55) internal successors, (273), 60 states have internal predecessors, (273), 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) [2023-12-20 12:22:46,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:22:46,070 INFO L93 Difference]: Finished difference Result 39679 states and 48891 transitions. [2023-12-20 12:22:46,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 213 states. [2023-12-20 12:22:46,071 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 4.55) internal successors, (273), 60 states have internal predecessors, (273), 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 100 [2023-12-20 12:22:46,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:22:46,097 INFO L225 Difference]: With dead ends: 39679 [2023-12-20 12:22:46,098 INFO L226 Difference]: Without dead ends: 25967 [2023-12-20 12:22:46,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 162 SyntacticMatches, 2 SemanticMatches, 266 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25323 ImplicationChecksByTransitivity, 34.1s TimeCoverageRelationStatistics Valid=9929, Invalid=61627, Unknown=0, NotChecked=0, Total=71556 [2023-12-20 12:22:46,109 INFO L413 NwaCegarLoop]: 1579 mSDtfsCounter, 19457 mSDsluCounter, 28529 mSDsCounter, 0 mSdLazyCounter, 2701 mSolverCounterSat, 275 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19457 SdHoareTripleChecker+Valid, 30108 SdHoareTripleChecker+Invalid, 2976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 275 IncrementalHoareTripleChecker+Valid, 2701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-20 12:22:46,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19457 Valid, 30108 Invalid, 2976 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [275 Valid, 2701 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-20 12:22:46,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25967 states. [2023-12-20 12:22:48,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25967 to 22977. [2023-12-20 12:22:48,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22977 states, 22975 states have (on average 1.248531011969532) internal successors, (28685), 22976 states have internal predecessors, (28685), 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) [2023-12-20 12:22:48,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22977 states to 22977 states and 28685 transitions. [2023-12-20 12:22:48,611 INFO L78 Accepts]: Start accepts. Automaton has 22977 states and 28685 transitions. Word has length 100 [2023-12-20 12:22:48,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:22:48,611 INFO L495 AbstractCegarLoop]: Abstraction has 22977 states and 28685 transitions. [2023-12-20 12:22:48,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 4.55) internal successors, (273), 60 states have internal predecessors, (273), 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) [2023-12-20 12:22:48,612 INFO L276 IsEmpty]: Start isEmpty. Operand 22977 states and 28685 transitions. [2023-12-20 12:22:48,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-20 12:22:48,613 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:22:48,613 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2023-12-20 12:22:48,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-20 12:22:48,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-20 12:22:48,820 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:22:48,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:22:48,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1336758694, now seen corresponding path program 1 times [2023-12-20 12:22:48,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:22:48,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119215466] [2023-12-20 12:22:48,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:22:48,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:22:48,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:22:49,330 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 29 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:22:49,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:22:49,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119215466] [2023-12-20 12:22:49,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119215466] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:22:49,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459169276] [2023-12-20 12:22:49,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:22:49,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:22:49,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:22:49,345 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:22:49,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-20 12:22:49,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:22:49,444 INFO L262 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 12:22:49,446 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:22:50,268 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 47 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:22:50,268 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:22:51,540 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 40 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:22:51,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1459169276] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:22:51,541 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:22:51,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 15] total 40 [2023-12-20 12:22:51,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374036230] [2023-12-20 12:22:51,541 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:22:51,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-12-20 12:22:51,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:22:51,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-12-20 12:22:51,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=1415, Unknown=0, NotChecked=0, Total=1560 [2023-12-20 12:22:51,543 INFO L87 Difference]: Start difference. First operand 22977 states and 28685 transitions. Second operand has 40 states, 40 states have (on average 6.875) internal successors, (275), 40 states have internal predecessors, (275), 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) [2023-12-20 12:23:07,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:23:07,230 INFO L93 Difference]: Finished difference Result 67614 states and 82979 transitions. [2023-12-20 12:23:07,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2023-12-20 12:23:07,230 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 6.875) internal successors, (275), 40 states have internal predecessors, (275), 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 100 [2023-12-20 12:23:07,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:23:07,275 INFO L225 Difference]: With dead ends: 67614 [2023-12-20 12:23:07,276 INFO L226 Difference]: Without dead ends: 47498 [2023-12-20 12:23:07,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10617 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=4009, Invalid=27853, Unknown=0, NotChecked=0, Total=31862 [2023-12-20 12:23:07,289 INFO L413 NwaCegarLoop]: 1555 mSDtfsCounter, 29720 mSDsluCounter, 17920 mSDsCounter, 0 mSdLazyCounter, 2916 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29720 SdHoareTripleChecker+Valid, 19475 SdHoareTripleChecker+Invalid, 3018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 2916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-20 12:23:07,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29720 Valid, 19475 Invalid, 3018 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [102 Valid, 2916 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-20 12:23:07,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47498 states. [2023-12-20 12:23:10,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47498 to 23753. [2023-12-20 12:23:10,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23753 states, 23751 states have (on average 1.2427266220369668) internal successors, (29516), 23752 states have internal predecessors, (29516), 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) [2023-12-20 12:23:10,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23753 states to 23753 states and 29516 transitions. [2023-12-20 12:23:10,275 INFO L78 Accepts]: Start accepts. Automaton has 23753 states and 29516 transitions. Word has length 100 [2023-12-20 12:23:10,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:23:10,275 INFO L495 AbstractCegarLoop]: Abstraction has 23753 states and 29516 transitions. [2023-12-20 12:23:10,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 6.875) internal successors, (275), 40 states have internal predecessors, (275), 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) [2023-12-20 12:23:10,276 INFO L276 IsEmpty]: Start isEmpty. Operand 23753 states and 29516 transitions. [2023-12-20 12:23:10,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-20 12:23:10,277 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:23:10,277 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2023-12-20 12:23:10,307 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-20 12:23:10,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:23:10,482 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:23:10,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:23:10,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1092831919, now seen corresponding path program 1 times [2023-12-20 12:23:10,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:23:10,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876914933] [2023-12-20 12:23:10,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:23:10,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:23:10,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:23:10,818 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 19 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:23:10,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:23:10,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876914933] [2023-12-20 12:23:10,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876914933] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:23:10,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946074204] [2023-12-20 12:23:10,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:23:10,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:23:10,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:23:10,819 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:23:10,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-20 12:23:10,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:23:10,917 INFO L262 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 12:23:10,918 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:23:11,948 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 23 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:23:11,949 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:23:12,899 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 20 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:23:12,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1946074204] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:23:12,900 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:23:12,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16, 15] total 40 [2023-12-20 12:23:12,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293273410] [2023-12-20 12:23:12,900 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:23:12,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-12-20 12:23:12,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:23:12,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-12-20 12:23:12,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=1393, Unknown=0, NotChecked=0, Total=1560 [2023-12-20 12:23:12,901 INFO L87 Difference]: Start difference. First operand 23753 states and 29516 transitions. Second operand has 40 states, 40 states have (on average 6.825) internal successors, (273), 40 states have internal predecessors, (273), 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) [2023-12-20 12:23:24,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:23:24,354 INFO L93 Difference]: Finished difference Result 69024 states and 84414 transitions. [2023-12-20 12:23:24,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2023-12-20 12:23:24,355 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 6.825) internal successors, (273), 40 states have internal predecessors, (273), 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 101 [2023-12-20 12:23:24,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:23:24,405 INFO L225 Difference]: With dead ends: 69024 [2023-12-20 12:23:24,405 INFO L226 Difference]: Without dead ends: 50712 [2023-12-20 12:23:24,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 177 SyntacticMatches, 1 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3808 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=2588, Invalid=10984, Unknown=0, NotChecked=0, Total=13572 [2023-12-20 12:23:24,414 INFO L413 NwaCegarLoop]: 1559 mSDtfsCounter, 20040 mSDsluCounter, 18423 mSDsCounter, 0 mSdLazyCounter, 2164 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20040 SdHoareTripleChecker+Valid, 19982 SdHoareTripleChecker+Invalid, 2265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 2164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:23:24,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20040 Valid, 19982 Invalid, 2265 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [101 Valid, 2164 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-20 12:23:24,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50712 states. [2023-12-20 12:23:28,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50712 to 28450. [2023-12-20 12:23:28,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28450 states, 28448 states have (on average 1.2374156355455568) internal successors, (35202), 28449 states have internal predecessors, (35202), 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) [2023-12-20 12:23:28,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28450 states to 28450 states and 35202 transitions. [2023-12-20 12:23:28,114 INFO L78 Accepts]: Start accepts. Automaton has 28450 states and 35202 transitions. Word has length 101 [2023-12-20 12:23:28,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:23:28,114 INFO L495 AbstractCegarLoop]: Abstraction has 28450 states and 35202 transitions. [2023-12-20 12:23:28,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 6.825) internal successors, (273), 40 states have internal predecessors, (273), 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) [2023-12-20 12:23:28,114 INFO L276 IsEmpty]: Start isEmpty. Operand 28450 states and 35202 transitions. [2023-12-20 12:23:28,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-20 12:23:28,130 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:23:28,130 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2023-12-20 12:23:28,138 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-20 12:23:28,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:23:28,330 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:23:28,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:23:28,331 INFO L85 PathProgramCache]: Analyzing trace with hash -575302877, now seen corresponding path program 1 times [2023-12-20 12:23:28,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:23:28,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103022980] [2023-12-20 12:23:28,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:23:28,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:23:28,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:23:29,534 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 23 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:23:29,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:23:29,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103022980] [2023-12-20 12:23:29,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103022980] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:23:29,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1921359765] [2023-12-20 12:23:29,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:23:29,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:23:29,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:23:29,535 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:23:29,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-20 12:23:29,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:23:29,647 INFO L262 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 45 conjunts are in the unsatisfiable core [2023-12-20 12:23:29,649 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:23:32,124 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 14 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:23:32,124 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:23:34,895 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 13 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:23:34,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1921359765] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:23:34,904 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:23:34,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 25, 24] total 70 [2023-12-20 12:23:34,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599196104] [2023-12-20 12:23:34,905 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:23:34,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2023-12-20 12:23:34,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:23:34,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2023-12-20 12:23:34,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=318, Invalid=4512, Unknown=0, NotChecked=0, Total=4830 [2023-12-20 12:23:34,907 INFO L87 Difference]: Start difference. First operand 28450 states and 35202 transitions. Second operand has 70 states, 70 states have (on average 4.128571428571429) internal successors, (289), 70 states have internal predecessors, (289), 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) [2023-12-20 12:25:06,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:25:06,445 INFO L93 Difference]: Finished difference Result 59931 states and 73138 transitions. [2023-12-20 12:25:06,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 315 states. [2023-12-20 12:25:06,445 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 4.128571428571429) internal successors, (289), 70 states have internal predecessors, (289), 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 101 [2023-12-20 12:25:06,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:25:06,507 INFO L225 Difference]: With dead ends: 59931 [2023-12-20 12:25:06,507 INFO L226 Difference]: Without dead ends: 51048 [2023-12-20 12:25:06,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 538 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 381 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54369 ImplicationChecksByTransitivity, 78.6s TimeCoverageRelationStatistics Valid=12954, Invalid=133352, Unknown=0, NotChecked=0, Total=146306 [2023-12-20 12:25:06,526 INFO L413 NwaCegarLoop]: 1661 mSDtfsCounter, 27458 mSDsluCounter, 41372 mSDsCounter, 0 mSdLazyCounter, 7838 mSolverCounterSat, 255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27458 SdHoareTripleChecker+Valid, 43033 SdHoareTripleChecker+Invalid, 8093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 255 IncrementalHoareTripleChecker+Valid, 7838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2023-12-20 12:25:06,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27458 Valid, 43033 Invalid, 8093 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [255 Valid, 7838 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2023-12-20 12:25:06,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51048 states. [2023-12-20 12:25:10,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51048 to 29836. [2023-12-20 12:25:11,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29836 states, 29834 states have (on average 1.2348662599718443) internal successors, (36841), 29835 states have internal predecessors, (36841), 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) [2023-12-20 12:25:11,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29836 states to 29836 states and 36841 transitions. [2023-12-20 12:25:11,034 INFO L78 Accepts]: Start accepts. Automaton has 29836 states and 36841 transitions. Word has length 101 [2023-12-20 12:25:11,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:25:11,034 INFO L495 AbstractCegarLoop]: Abstraction has 29836 states and 36841 transitions. [2023-12-20 12:25:11,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 4.128571428571429) internal successors, (289), 70 states have internal predecessors, (289), 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) [2023-12-20 12:25:11,035 INFO L276 IsEmpty]: Start isEmpty. Operand 29836 states and 36841 transitions. [2023-12-20 12:25:11,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-20 12:25:11,036 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:25:11,036 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2023-12-20 12:25:11,041 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-12-20 12:25:11,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:25:11,241 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:25:11,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:25:11,241 INFO L85 PathProgramCache]: Analyzing trace with hash 527574509, now seen corresponding path program 1 times [2023-12-20 12:25:11,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:25:11,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897042134] [2023-12-20 12:25:11,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:25:11,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:25:11,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:25:12,181 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 28 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:25:12,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:25:12,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897042134] [2023-12-20 12:25:12,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897042134] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:25:12,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1917715692] [2023-12-20 12:25:12,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:25:12,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:25:12,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:25:12,183 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:25:12,185 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-20 12:25:12,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:25:12,284 INFO L262 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 45 conjunts are in the unsatisfiable core [2023-12-20 12:25:12,286 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:25:14,087 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 38 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:25:14,088 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:25:18,247 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 37 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:25:18,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1917715692] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:25:18,247 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:25:18,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 22, 23] total 68 [2023-12-20 12:25:18,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458980624] [2023-12-20 12:25:18,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:25:18,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2023-12-20 12:25:18,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:25:18,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2023-12-20 12:25:18,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=319, Invalid=4237, Unknown=0, NotChecked=0, Total=4556 [2023-12-20 12:25:18,249 INFO L87 Difference]: Start difference. First operand 29836 states and 36841 transitions. Second operand has 68 states, 68 states have (on average 4.0) internal successors, (272), 68 states have internal predecessors, (272), 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) [2023-12-20 12:27:03,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:27:03,660 INFO L93 Difference]: Finished difference Result 59927 states and 72990 transitions. [2023-12-20 12:27:03,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 441 states. [2023-12-20 12:27:03,660 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 4.0) internal successors, (272), 68 states have internal predecessors, (272), 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 101 [2023-12-20 12:27:03,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:27:03,709 INFO L225 Difference]: With dead ends: 59927 [2023-12-20 12:27:03,709 INFO L226 Difference]: Without dead ends: 44510 [2023-12-20 12:27:03,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 664 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 504 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102557 ImplicationChecksByTransitivity, 94.2s TimeCoverageRelationStatistics Valid=18509, Invalid=237021, Unknown=0, NotChecked=0, Total=255530 [2023-12-20 12:27:03,751 INFO L413 NwaCegarLoop]: 1716 mSDtfsCounter, 27464 mSDsluCounter, 36986 mSDsCounter, 0 mSdLazyCounter, 7439 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27464 SdHoareTripleChecker+Valid, 38702 SdHoareTripleChecker+Invalid, 7627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 7439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2023-12-20 12:27:03,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27464 Valid, 38702 Invalid, 7627 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [188 Valid, 7439 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2023-12-20 12:27:03,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44510 states. [2023-12-20 12:27:08,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44510 to 29854. [2023-12-20 12:27:08,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29854 states, 29852 states have (on average 1.2347246415650543) internal successors, (36859), 29853 states have internal predecessors, (36859), 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) [2023-12-20 12:27:08,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29854 states to 29854 states and 36859 transitions. [2023-12-20 12:27:08,686 INFO L78 Accepts]: Start accepts. Automaton has 29854 states and 36859 transitions. Word has length 101 [2023-12-20 12:27:08,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:27:08,686 INFO L495 AbstractCegarLoop]: Abstraction has 29854 states and 36859 transitions. [2023-12-20 12:27:08,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 4.0) internal successors, (272), 68 states have internal predecessors, (272), 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) [2023-12-20 12:27:08,686 INFO L276 IsEmpty]: Start isEmpty. Operand 29854 states and 36859 transitions. [2023-12-20 12:27:08,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-20 12:27:08,687 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:27:08,687 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2023-12-20 12:27:08,699 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-20 12:27:08,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:27:08,893 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:27:08,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:27:08,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1770567870, now seen corresponding path program 1 times [2023-12-20 12:27:08,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:27:08,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682358987] [2023-12-20 12:27:08,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:27:08,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:27:08,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:27:10,253 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 19 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:27:10,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:27:10,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682358987] [2023-12-20 12:27:10,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682358987] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:27:10,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488896135] [2023-12-20 12:27:10,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:27:10,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:27:10,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:27:10,257 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:27:10,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-20 12:27:10,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:27:10,366 INFO L262 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 65 conjunts are in the unsatisfiable core [2023-12-20 12:27:10,368 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:27:13,088 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 30 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:27:13,089 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:27:21,233 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 29 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:27:21,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1488896135] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:27:21,233 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:27:21,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 30, 31] total 86 [2023-12-20 12:27:21,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016614942] [2023-12-20 12:27:21,234 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:27:21,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2023-12-20 12:27:21,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:27:21,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2023-12-20 12:27:21,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=767, Invalid=6543, Unknown=0, NotChecked=0, Total=7310 [2023-12-20 12:27:21,235 INFO L87 Difference]: Start difference. First operand 29854 states and 36859 transitions. Second operand has 86 states, 86 states have (on average 3.302325581395349) internal successors, (284), 86 states have internal predecessors, (284), 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) [2023-12-20 12:30:04,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:30:04,417 INFO L93 Difference]: Finished difference Result 72714 states and 88575 transitions. [2023-12-20 12:30:04,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 284 states. [2023-12-20 12:30:04,418 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 3.302325581395349) internal successors, (284), 86 states have internal predecessors, (284), 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 102 [2023-12-20 12:30:04,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:30:04,479 INFO L225 Difference]: With dead ends: 72714 [2023-12-20 12:30:04,479 INFO L226 Difference]: Without dead ends: 58642 [2023-12-20 12:30:04,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 506 GetRequests, 145 SyntacticMatches, 1 SemanticMatches, 360 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49007 ImplicationChecksByTransitivity, 152.5s TimeCoverageRelationStatistics Valid=18070, Invalid=112612, Unknown=0, NotChecked=0, Total=130682 [2023-12-20 12:30:04,498 INFO L413 NwaCegarLoop]: 1555 mSDtfsCounter, 39723 mSDsluCounter, 34131 mSDsCounter, 0 mSdLazyCounter, 5077 mSolverCounterSat, 439 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39723 SdHoareTripleChecker+Valid, 35686 SdHoareTripleChecker+Invalid, 5516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 439 IncrementalHoareTripleChecker+Valid, 5077 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-12-20 12:30:04,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39723 Valid, 35686 Invalid, 5516 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [439 Valid, 5077 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-12-20 12:30:04,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58642 states. [2023-12-20 12:30:09,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58642 to 29056. [2023-12-20 12:30:09,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29056 states, 29054 states have (on average 1.2360776485165554) internal successors, (35913), 29055 states have internal predecessors, (35913), 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) [2023-12-20 12:30:09,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29056 states to 29056 states and 35913 transitions. [2023-12-20 12:30:09,763 INFO L78 Accepts]: Start accepts. Automaton has 29056 states and 35913 transitions. Word has length 102 [2023-12-20 12:30:09,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:30:09,763 INFO L495 AbstractCegarLoop]: Abstraction has 29056 states and 35913 transitions. [2023-12-20 12:30:09,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 3.302325581395349) internal successors, (284), 86 states have internal predecessors, (284), 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) [2023-12-20 12:30:09,764 INFO L276 IsEmpty]: Start isEmpty. Operand 29056 states and 35913 transitions. [2023-12-20 12:30:09,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-20 12:30:09,765 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:30:09,765 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:30:09,772 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-20 12:30:09,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:30:09,970 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:30:09,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:30:09,970 INFO L85 PathProgramCache]: Analyzing trace with hash 955455896, now seen corresponding path program 1 times [2023-12-20 12:30:09,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:30:09,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085516410] [2023-12-20 12:30:09,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:30:09,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:30:09,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:30:10,100 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:30:10,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:30:10,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085516410] [2023-12-20 12:30:10,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085516410] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:30:10,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:30:10,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 12:30:10,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285551696] [2023-12-20 12:30:10,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:30:10,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 12:30:10,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:30:10,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 12:30:10,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 12:30:10,102 INFO L87 Difference]: Start difference. First operand 29056 states and 35913 transitions. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 3 states have internal predecessors, (118), 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) [2023-12-20 12:30:17,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:30:17,957 INFO L93 Difference]: Finished difference Result 32852 states and 42277 transitions. [2023-12-20 12:30:17,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 12:30:17,958 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 3 states have internal predecessors, (118), 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 118 [2023-12-20 12:30:17,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:30:17,981 INFO L225 Difference]: With dead ends: 32852 [2023-12-20 12:30:17,981 INFO L226 Difference]: Without dead ends: 30560 [2023-12-20 12:30:17,985 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 [2023-12-20 12:30:17,987 INFO L413 NwaCegarLoop]: 739 mSDtfsCounter, 772 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 3102 mSolverCounterSat, 728 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 772 SdHoareTripleChecker+Valid, 819 SdHoareTripleChecker+Invalid, 3830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 728 IncrementalHoareTripleChecker+Valid, 3102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-20 12:30:17,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [772 Valid, 819 Invalid, 3830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [728 Valid, 3102 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-20 12:30:17,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30560 states. [2023-12-20 12:30:22,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30560 to 30558. [2023-12-20 12:30:22,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30558 states, 30556 states have (on average 1.2272876030894095) internal successors, (37501), 30557 states have internal predecessors, (37501), 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) [2023-12-20 12:30:23,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30558 states to 30558 states and 37501 transitions. [2023-12-20 12:30:23,050 INFO L78 Accepts]: Start accepts. Automaton has 30558 states and 37501 transitions. Word has length 118 [2023-12-20 12:30:23,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:30:23,050 INFO L495 AbstractCegarLoop]: Abstraction has 30558 states and 37501 transitions. [2023-12-20 12:30:23,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 3 states have internal predecessors, (118), 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) [2023-12-20 12:30:23,051 INFO L276 IsEmpty]: Start isEmpty. Operand 30558 states and 37501 transitions. [2023-12-20 12:30:23,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-20 12:30:23,054 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:30:23,054 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-20 12:30:23,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-12-20 12:30:23,054 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:30:23,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:30:23,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1444533268, now seen corresponding path program 1 times [2023-12-20 12:30:23,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:30:23,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579241271] [2023-12-20 12:30:23,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:30:23,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:30:23,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:30:23,817 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 136 proven. 70 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-20 12:30:23,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:30:23,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579241271] [2023-12-20 12:30:23,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579241271] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:30:23,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032486533] [2023-12-20 12:30:23,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:30:23,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:30:23,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:30:23,818 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:30:23,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-20 12:30:23,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:30:23,971 INFO L262 TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 40 conjunts are in the unsatisfiable core [2023-12-20 12:30:23,973 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:30:26,058 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 136 proven. 70 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-20 12:30:26,059 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:30:28,396 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 136 proven. 70 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-20 12:30:28,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1032486533] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:30:28,397 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:30:28,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 22, 22] total 62 [2023-12-20 12:30:28,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642262448] [2023-12-20 12:30:28,397 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:30:28,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2023-12-20 12:30:28,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:30:28,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2023-12-20 12:30:28,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=383, Invalid=3399, Unknown=0, NotChecked=0, Total=3782 [2023-12-20 12:30:28,398 INFO L87 Difference]: Start difference. First operand 30558 states and 37501 transitions. Second operand has 62 states, 62 states have (on average 4.935483870967742) internal successors, (306), 62 states have internal predecessors, (306), 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) [2023-12-20 12:31:01,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:31:01,818 INFO L93 Difference]: Finished difference Result 42510 states and 51904 transitions. [2023-12-20 12:31:01,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2023-12-20 12:31:01,818 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 4.935483870967742) internal successors, (306), 62 states have internal predecessors, (306), 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 139 [2023-12-20 12:31:01,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:31:01,846 INFO L225 Difference]: With dead ends: 42510 [2023-12-20 12:31:01,846 INFO L226 Difference]: Without dead ends: 32316 [2023-12-20 12:31:01,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9753 ImplicationChecksByTransitivity, 27.5s TimeCoverageRelationStatistics Valid=4078, Invalid=27784, Unknown=0, NotChecked=0, Total=31862 [2023-12-20 12:31:01,855 INFO L413 NwaCegarLoop]: 1449 mSDtfsCounter, 25472 mSDsluCounter, 23575 mSDsCounter, 0 mSdLazyCounter, 1787 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25472 SdHoareTripleChecker+Valid, 25024 SdHoareTripleChecker+Invalid, 1933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 1787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-20 12:31:01,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25472 Valid, 25024 Invalid, 1933 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [146 Valid, 1787 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-20 12:31:01,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32316 states. [2023-12-20 12:31:06,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32316 to 29818. [2023-12-20 12:31:06,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29818 states, 29816 states have (on average 1.227998390126107) internal successors, (36614), 29817 states have internal predecessors, (36614), 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) [2023-12-20 12:31:07,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29818 states to 29818 states and 36614 transitions. [2023-12-20 12:31:07,026 INFO L78 Accepts]: Start accepts. Automaton has 29818 states and 36614 transitions. Word has length 139 [2023-12-20 12:31:07,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:31:07,031 INFO L495 AbstractCegarLoop]: Abstraction has 29818 states and 36614 transitions. [2023-12-20 12:31:07,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 4.935483870967742) internal successors, (306), 62 states have internal predecessors, (306), 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) [2023-12-20 12:31:07,031 INFO L276 IsEmpty]: Start isEmpty. Operand 29818 states and 36614 transitions. [2023-12-20 12:31:07,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-20 12:31:07,033 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:31:07,033 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-20 12:31:07,044 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-12-20 12:31:07,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:31:07,242 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:31:07,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:31:07,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1064366480, now seen corresponding path program 2 times [2023-12-20 12:31:07,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:31:07,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698149784] [2023-12-20 12:31:07,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:31:07,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:31:07,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:31:08,355 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 42 proven. 184 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:31:08,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:31:08,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698149784] [2023-12-20 12:31:08,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698149784] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:31:08,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471928187] [2023-12-20 12:31:08,356 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-20 12:31:08,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:31:08,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:31:08,357 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:31:08,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-20 12:31:08,498 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-20 12:31:08,498 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 12:31:08,500 INFO L262 TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 46 conjunts are in the unsatisfiable core [2023-12-20 12:31:08,502 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:31:10,088 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 46 proven. 180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:31:10,088 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:31:13,494 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 40 proven. 186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:31:13,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [471928187] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:31:13,494 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:31:13,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 23, 20] total 66 [2023-12-20 12:31:13,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540919130] [2023-12-20 12:31:13,495 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:31:13,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2023-12-20 12:31:13,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:31:13,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2023-12-20 12:31:13,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=316, Invalid=3974, Unknown=0, NotChecked=0, Total=4290 [2023-12-20 12:31:13,496 INFO L87 Difference]: Start difference. First operand 29818 states and 36614 transitions. Second operand has 66 states, 66 states have (on average 5.9393939393939394) internal successors, (392), 66 states have internal predecessors, (392), 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) [2023-12-20 12:32:11,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:32:11,591 INFO L93 Difference]: Finished difference Result 54082 states and 65775 transitions. [2023-12-20 12:32:11,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 223 states. [2023-12-20 12:32:11,592 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 5.9393939393939394) internal successors, (392), 66 states have internal predecessors, (392), 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 139 [2023-12-20 12:32:11,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:32:11,628 INFO L225 Difference]: With dead ends: 54082 [2023-12-20 12:32:11,628 INFO L226 Difference]: Without dead ends: 39352 [2023-12-20 12:32:11,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 523 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 283 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25964 ImplicationChecksByTransitivity, 48.2s TimeCoverageRelationStatistics Valid=9991, Invalid=70949, Unknown=0, NotChecked=0, Total=80940 [2023-12-20 12:32:11,638 INFO L413 NwaCegarLoop]: 1513 mSDtfsCounter, 29672 mSDsluCounter, 41838 mSDsCounter, 0 mSdLazyCounter, 3998 mSolverCounterSat, 232 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29672 SdHoareTripleChecker+Valid, 43351 SdHoareTripleChecker+Invalid, 4230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 232 IncrementalHoareTripleChecker+Valid, 3998 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-12-20 12:32:11,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29672 Valid, 43351 Invalid, 4230 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [232 Valid, 3998 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-12-20 12:32:11,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39352 states. [2023-12-20 12:32:17,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39352 to 29478. [2023-12-20 12:32:17,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29478 states, 29476 states have (on average 1.2249287555977744) internal successors, (36106), 29477 states have internal predecessors, (36106), 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) [2023-12-20 12:32:17,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29478 states to 29478 states and 36106 transitions. [2023-12-20 12:32:17,295 INFO L78 Accepts]: Start accepts. Automaton has 29478 states and 36106 transitions. Word has length 139 [2023-12-20 12:32:17,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:32:17,296 INFO L495 AbstractCegarLoop]: Abstraction has 29478 states and 36106 transitions. [2023-12-20 12:32:17,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 5.9393939393939394) internal successors, (392), 66 states have internal predecessors, (392), 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) [2023-12-20 12:32:17,296 INFO L276 IsEmpty]: Start isEmpty. Operand 29478 states and 36106 transitions. [2023-12-20 12:32:17,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-20 12:32:17,298 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:32:17,305 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-20 12:32:17,311 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-12-20 12:32:17,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-12-20 12:32:17,511 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:32:17,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:32:17,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1126444658, now seen corresponding path program 1 times [2023-12-20 12:32:17,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:32:17,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516909180] [2023-12-20 12:32:17,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:32:17,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:32:17,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:32:18,433 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 48 proven. 184 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:32:18,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:32:18,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516909180] [2023-12-20 12:32:18,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516909180] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:32:18,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406698067] [2023-12-20 12:32:18,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:32:18,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:32:18,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:32:18,449 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:32:18,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-20 12:32:18,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:32:18,600 INFO L262 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-20 12:32:18,602 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:32:19,599 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 75 proven. 131 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-20 12:32:19,599 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:32:20,577 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 162 proven. 44 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-20 12:32:20,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [406698067] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:32:20,578 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:32:20,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 13, 12] total 38 [2023-12-20 12:32:20,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414516619] [2023-12-20 12:32:20,578 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:32:20,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-12-20 12:32:20,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:32:20,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-12-20 12:32:20,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=1281, Unknown=0, NotChecked=0, Total=1406 [2023-12-20 12:32:20,579 INFO L87 Difference]: Start difference. First operand 29478 states and 36106 transitions. Second operand has 38 states, 38 states have (on average 8.552631578947368) internal successors, (325), 38 states have internal predecessors, (325), 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... [2023-12-20 12:32:43,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 224 states. [2023-12-20 12:32:43,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 602 GetRequests, 342 SyntacticMatches, 1 SemanticMatches, 258 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25560 ImplicationChecksByTransitivity, 19.7s TimeCoverageRelationStatistics Valid=7743, Invalid=59597, Unknown=0, NotChecked=0, Total=67340 [2023-12-20 12:32:43,906 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 4325 mSDsluCounter, 4950 mSDsCounter, 0 mSdLazyCounter, 4203 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4325 SdHoareTripleChecker+Valid, 5354 SdHoareTripleChecker+Invalid, 4273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 4203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-20 12:32:43,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4325 Valid, 5354 Invalid, 4273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 4203 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-20 12:32:43,907 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-20 12:32:43,915 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-12-20 12:32:43,946 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-20 12:32:43,946 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 [2023-12-20 12:32:44,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-12-20 12:32:44,108 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (29478states) and FLOYD_HOARE automaton (currently 224 states, 38 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 260 known predicates. [2023-12-20 12:32:44,110 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-20 12:32:44,112 INFO L445 BasicCegarLoop]: Path program histogram: [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] [2023-12-20 12:32:44,114 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-20 12:32:44,115 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.12 12:32:44 BoogieIcfgContainer [2023-12-20 12:32:44,115 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-20 12:32:44,117 INFO L158 Benchmark]: Toolchain (without parser) took 835607.97ms. Allocated memory was 371.2MB in the beginning and 2.7GB in the end (delta: 2.3GB). Free memory was 312.3MB in the beginning and 1.1GB in the end (delta: -742.6MB). Peak memory consumption was 1.5GB. Max. memory is 8.0GB. [2023-12-20 12:32:44,118 INFO L158 Benchmark]: CDTParser took 0.41ms. Allocated memory is still 254.8MB. Free memory is still 202.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-20 12:32:44,118 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1323.01ms. Allocated memory is still 371.2MB. Free memory was 312.3MB in the beginning and 258.0MB in the end (delta: 54.4MB). Peak memory consumption was 74.9MB. Max. memory is 8.0GB. [2023-12-20 12:32:44,118 INFO L158 Benchmark]: Boogie Procedure Inliner took 256.31ms. Allocated memory is still 371.2MB. Free memory was 258.0MB in the beginning and 231.0MB in the end (delta: 27.0MB). Peak memory consumption was 28.0MB. Max. memory is 8.0GB. [2023-12-20 12:32:44,118 INFO L158 Benchmark]: Boogie Preprocessor took 549.60ms. Allocated memory was 371.2MB in the beginning and 568.3MB in the end (delta: 197.1MB). Free memory was 231.0MB in the beginning and 436.5MB in the end (delta: -205.5MB). Peak memory consumption was 74.4MB. Max. memory is 8.0GB. [2023-12-20 12:32:44,118 INFO L158 Benchmark]: RCFGBuilder took 3172.22ms. Allocated memory was 568.3MB in the beginning and 1.1GB in the end (delta: 544.2MB). Free memory was 436.5MB in the beginning and 844.4MB in the end (delta: -407.9MB). Peak memory consumption was 293.6MB. Max. memory is 8.0GB. [2023-12-20 12:32:44,118 INFO L158 Benchmark]: TraceAbstraction took 830299.98ms. Allocated memory was 1.1GB in the beginning and 2.7GB in the end (delta: 1.5GB). Free memory was 843.9MB in the beginning and 1.1GB in the end (delta: -211.0MB). Peak memory consumption was 1.3GB. Max. memory is 8.0GB. [2023-12-20 12:32:44,119 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41ms. Allocated memory is still 254.8MB. Free memory is still 202.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1323.01ms. Allocated memory is still 371.2MB. Free memory was 312.3MB in the beginning and 258.0MB in the end (delta: 54.4MB). Peak memory consumption was 74.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 256.31ms. Allocated memory is still 371.2MB. Free memory was 258.0MB in the beginning and 231.0MB in the end (delta: 27.0MB). Peak memory consumption was 28.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 549.60ms. Allocated memory was 371.2MB in the beginning and 568.3MB in the end (delta: 197.1MB). Free memory was 231.0MB in the beginning and 436.5MB in the end (delta: -205.5MB). Peak memory consumption was 74.4MB. Max. memory is 8.0GB. * RCFGBuilder took 3172.22ms. Allocated memory was 568.3MB in the beginning and 1.1GB in the end (delta: 544.2MB). Free memory was 436.5MB in the beginning and 844.4MB in the end (delta: -407.9MB). Peak memory consumption was 293.6MB. Max. memory is 8.0GB. * TraceAbstraction took 830299.98ms. Allocated memory was 1.1GB in the beginning and 2.7GB in the end (delta: 1.5GB). Free memory was 843.9MB in the beginning and 1.1GB in the end (delta: -211.0MB). Peak memory consumption was 1.3GB. 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: 297]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 297). Cancelled while NwaCegarLoop was constructing difference of abstraction (29478states) and FLOYD_HOARE automaton (currently 224 states, 38 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 260 known predicates. - TimeoutResultAtElement [Line: 456]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 456). Cancelled while NwaCegarLoop was constructing difference of abstraction (29478states) and FLOYD_HOARE automaton (currently 224 states, 38 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 260 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 809 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 830.3s, OverallIterations: 38, TraceHistogramMax: 6, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 690.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 472156 SdHoareTripleChecker+Valid, 52.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 472156 mSDsluCounter, 535464 SdHoareTripleChecker+Invalid, 46.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 479911 mSDsCounter, 5078 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 64797 IncrementalHoareTripleChecker+Invalid, 69875 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5078 mSolverCounterUnsat, 55553 mSDtfsCounter, 64797 mSolverCounterSat, 1.6s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7427 GetRequests, 3434 SyntacticMatches, 8 SemanticMatches, 3984 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 412962 ImplicationChecksByTransitivity, 595.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30558occurred in iteration=35, InterpolantAutomatonStates: 2923, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 45.7s AutomataMinimizationTime, 37 MinimizatonAttempts, 148846 StatesRemovedByMinimization, 34 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 86.6s InterpolantComputationTime, 4680 NumberOfCodeBlocks, 4680 NumberOfCodeBlocksAsserted, 60 NumberOfCheckSat, 6562 ConstructedInterpolants, 0 QuantifiedInterpolants, 155827 SizeOfPredicates, 191 NumberOfNonLiveVariables, 8441 ConjunctsInSsa, 632 ConjunctsInUnsatCore, 80 InterpolantComputations, 17 PerfectInterpolantSequences, 2224/5525 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