/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.5.1.ufo.BOUNDED-10.pals+Problem12_label02.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 13:26:54,788 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 13:26:54,866 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 13:26:54,870 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 13:26:54,871 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 13:26:54,896 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 13:26:54,897 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 13:26:54,898 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 13:26:54,898 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 13:26:54,902 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 13:26:54,902 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 13:26:54,903 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 13:26:54,903 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 13:26:54,904 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 13:26:54,905 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 13:26:54,905 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 13:26:54,905 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 13:26:54,905 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 13:26:54,906 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 13:26:54,906 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 13:26:54,906 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 13:26:54,906 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 13:26:54,907 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 13:26:54,907 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 13:26:54,907 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 13:26:54,907 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 13:26:54,908 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 13:26:54,908 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 13:26:54,908 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 13:26:54,908 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 13:26:54,909 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 13:26:54,910 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 13:26:54,910 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 13:26:54,910 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 13:26:54,910 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 13:26:54,910 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 13:26:54,910 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 13:26:54,911 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 13:26:54,911 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 13:26:54,911 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 13:26:54,911 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 13:26:54,911 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 13:26:54,911 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 13:26:54,912 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 13:26:55,136 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 13:26:55,160 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 13:26:55,162 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 13:26:55,163 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 13:26:55,163 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 13:26:55,164 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.5.1.ufo.BOUNDED-10.pals+Problem12_label02.c [2023-12-20 13:26:56,290 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 13:26:56,737 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 13:26:56,738 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.5.1.ufo.BOUNDED-10.pals+Problem12_label02.c [2023-12-20 13:26:56,770 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8942b569/d1fcae203aee49cda59b7e449e53bbad/FLAGbe544e50b [2023-12-20 13:26:56,785 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8942b569/d1fcae203aee49cda59b7e449e53bbad [2023-12-20 13:26:56,787 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 13:26:56,788 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 13:26:56,791 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 13:26:56,791 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 13:26:56,795 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 13:26:56,796 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 01:26:56" (1/1) ... [2023-12-20 13:26:56,797 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fd7a2d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:26:56, skipping insertion in model container [2023-12-20 13:26:56,797 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 01:26:56" (1/1) ... [2023-12-20 13:26:56,926 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 13:26:57,195 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.5.1.ufo.BOUNDED-10.pals+Problem12_label02.c[11677,11690] [2023-12-20 13:26:57,238 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.5.1.ufo.BOUNDED-10.pals+Problem12_label02.c[18967,18980] [2023-12-20 13:26:57,839 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 13:26:57,853 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 13:26:57,893 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.5.1.ufo.BOUNDED-10.pals+Problem12_label02.c[11677,11690] [2023-12-20 13:26:57,904 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.5.1.ufo.BOUNDED-10.pals+Problem12_label02.c[18967,18980] [2023-12-20 13:26:58,250 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 13:26:58,276 INFO L206 MainTranslator]: Completed translation [2023-12-20 13:26:58,277 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:26:58 WrapperNode [2023-12-20 13:26:58,277 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 13:26:58,278 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 13:26:58,278 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 13:26:58,278 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 13:26:58,284 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:26:58" (1/1) ... [2023-12-20 13:26:58,323 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:26:58" (1/1) ... [2023-12-20 13:26:58,591 INFO L138 Inliner]: procedures = 36, calls = 22, calls flagged for inlining = 17, calls inlined = 17, statements flattened = 5095 [2023-12-20 13:26:58,592 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 13:26:58,593 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 13:26:58,593 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 13:26:58,593 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 13:26:58,602 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:26:58" (1/1) ... [2023-12-20 13:26:58,603 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:26:58" (1/1) ... [2023-12-20 13:26:58,650 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:26:58" (1/1) ... [2023-12-20 13:26:58,863 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 13:26:58,863 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:26:58" (1/1) ... [2023-12-20 13:26:58,863 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:26:58" (1/1) ... [2023-12-20 13:26:59,026 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:26:58" (1/1) ... [2023-12-20 13:26:59,058 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:26:58" (1/1) ... [2023-12-20 13:26:59,114 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:26:58" (1/1) ... [2023-12-20 13:26:59,128 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:26:58" (1/1) ... [2023-12-20 13:26:59,203 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 13:26:59,204 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 13:26:59,204 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 13:26:59,204 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 13:26:59,205 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:26:58" (1/1) ... [2023-12-20 13:26:59,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 13:26:59,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:26:59,231 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 13:26:59,241 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 13:26:59,262 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 13:26:59,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 13:26:59,262 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 13:26:59,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 13:26:59,366 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 13:26:59,367 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 13:27:03,015 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 13:27:03,061 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 13:27:03,061 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-20 13:27:03,061 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 01:27:03 BoogieIcfgContainer [2023-12-20 13:27:03,061 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 13:27:03,063 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 13:27:03,063 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 13:27:03,065 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 13:27:03,066 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 01:26:56" (1/3) ... [2023-12-20 13:27:03,066 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c76f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 01:27:03, skipping insertion in model container [2023-12-20 13:27:03,066 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:26:58" (2/3) ... [2023-12-20 13:27:03,066 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c76f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 01:27:03, skipping insertion in model container [2023-12-20 13:27:03,066 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 01:27:03" (3/3) ... [2023-12-20 13:27:03,067 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.1.ufo.BOUNDED-10.pals+Problem12_label02.c [2023-12-20 13:27:03,081 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 13:27:03,082 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-20 13:27:03,134 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 13:27:03,140 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;@6ea665b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 13:27:03,140 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-20 13:27:03,147 INFO L276 IsEmpty]: Start isEmpty. Operand has 834 states, 831 states have (on average 1.9759326113116726) internal successors, (1642), 833 states have internal predecessors, (1642), 0 states have call successors, (0), 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 13:27:03,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-20 13:27:03,154 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:27:03,154 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] [2023-12-20 13:27:03,155 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:27:03,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:27:03,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1603356568, now seen corresponding path program 1 times [2023-12-20 13:27:03,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:27:03,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185906877] [2023-12-20 13:27:03,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:27:03,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:27:03,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:27:03,341 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 13:27:03,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:27:03,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185906877] [2023-12-20 13:27:03,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185906877] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:27:03,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:27:03,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 13:27:03,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028306577] [2023-12-20 13:27:03,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:27:03,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 13:27:03,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:27:03,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 13:27:03,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 13:27:03,377 INFO L87 Difference]: Start difference. First operand has 834 states, 831 states have (on average 1.9759326113116726) internal successors, (1642), 833 states have internal predecessors, (1642), 0 states have call successors, (0), 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 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 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 13:27:03,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:27:03,470 INFO L93 Difference]: Finished difference Result 1633 states and 3216 transitions. [2023-12-20 13:27:03,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 13:27:03,477 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2023-12-20 13:27:03,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:27:03,494 INFO L225 Difference]: With dead ends: 1633 [2023-12-20 13:27:03,494 INFO L226 Difference]: Without dead ends: 830 [2023-12-20 13:27:03,505 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 13:27:03,508 INFO L413 NwaCegarLoop]: 1571 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1571 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:27:03,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1571 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:27:03,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2023-12-20 13:27:03,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 830. [2023-12-20 13:27:03,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 830 states, 828 states have (on average 1.8973429951690821) internal successors, (1571), 829 states have internal predecessors, (1571), 0 states have call successors, (0), 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 13:27:03,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 1571 transitions. [2023-12-20 13:27:03,582 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 1571 transitions. Word has length 21 [2023-12-20 13:27:03,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:27:03,583 INFO L495 AbstractCegarLoop]: Abstraction has 830 states and 1571 transitions. [2023-12-20 13:27:03,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 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 13:27:03,583 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 1571 transitions. [2023-12-20 13:27:03,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-20 13:27:03,588 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:27:03,588 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] [2023-12-20 13:27:03,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 13:27:03,588 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:27:03,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:27:03,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1103262826, now seen corresponding path program 1 times [2023-12-20 13:27:03,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:27:03,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972255319] [2023-12-20 13:27:03,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:27:03,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:27:03,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:27:03,957 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 13:27:03,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:27:03,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972255319] [2023-12-20 13:27:03,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972255319] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:27:03,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:27:03,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 13:27:03,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230485150] [2023-12-20 13:27:03,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:27:03,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 13:27:03,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:27:03,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 13:27:03,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 13:27:03,965 INFO L87 Difference]: Start difference. First operand 830 states and 1571 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 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 13:27:04,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:27:04,057 INFO L93 Difference]: Finished difference Result 874 states and 1640 transitions. [2023-12-20 13:27:04,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 13:27:04,059 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2023-12-20 13:27:04,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:27:04,063 INFO L225 Difference]: With dead ends: 874 [2023-12-20 13:27:04,063 INFO L226 Difference]: Without dead ends: 830 [2023-12-20 13:27:04,064 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 13:27:04,065 INFO L413 NwaCegarLoop]: 1568 mSDtfsCounter, 0 mSDsluCounter, 3101 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4669 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:27:04,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4669 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:27:04,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2023-12-20 13:27:04,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 830. [2023-12-20 13:27:04,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 830 states, 828 states have (on average 1.8599033816425121) internal successors, (1540), 829 states have internal predecessors, (1540), 0 states have call successors, (0), 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 13:27:04,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 1540 transitions. [2023-12-20 13:27:04,084 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 1540 transitions. Word has length 21 [2023-12-20 13:27:04,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:27:04,085 INFO L495 AbstractCegarLoop]: Abstraction has 830 states and 1540 transitions. [2023-12-20 13:27:04,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 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 13:27:04,085 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 1540 transitions. [2023-12-20 13:27:04,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-20 13:27:04,090 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:27:04,091 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:27:04,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 13:27:04,091 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:27:04,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:27:04,092 INFO L85 PathProgramCache]: Analyzing trace with hash 51546625, now seen corresponding path program 1 times [2023-12-20 13:27:04,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:27:04,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891228323] [2023-12-20 13:27:04,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:27:04,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:27:04,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:27:04,279 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 13:27:04,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:27:04,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891228323] [2023-12-20 13:27:04,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891228323] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:27:04,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:27:04,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 13:27:04,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500347550] [2023-12-20 13:27:04,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:27:04,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 13:27:04,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:27:04,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 13:27:04,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 13:27:04,286 INFO L87 Difference]: Start difference. First operand 830 states and 1540 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 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 13:27:04,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:27:04,553 INFO L93 Difference]: Finished difference Result 1240 states and 2200 transitions. [2023-12-20 13:27:04,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-20 13:27:04,554 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 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 51 [2023-12-20 13:27:04,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:27:04,560 INFO L225 Difference]: With dead ends: 1240 [2023-12-20 13:27:04,560 INFO L226 Difference]: Without dead ends: 1199 [2023-12-20 13:27:04,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2023-12-20 13:27:04,563 INFO L413 NwaCegarLoop]: 1533 mSDtfsCounter, 7933 mSDsluCounter, 1167 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7933 SdHoareTripleChecker+Valid, 2700 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 13:27:04,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7933 Valid, 2700 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 13:27:04,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1199 states. [2023-12-20 13:27:04,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1199 to 869. [2023-12-20 13:27:04,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 869 states, 867 states have (on average 1.8489042675893888) internal successors, (1603), 868 states have internal predecessors, (1603), 0 states have call successors, (0), 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 13:27:04,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 869 states to 869 states and 1603 transitions. [2023-12-20 13:27:04,587 INFO L78 Accepts]: Start accepts. Automaton has 869 states and 1603 transitions. Word has length 51 [2023-12-20 13:27:04,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:27:04,588 INFO L495 AbstractCegarLoop]: Abstraction has 869 states and 1603 transitions. [2023-12-20 13:27:04,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 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 13:27:04,588 INFO L276 IsEmpty]: Start isEmpty. Operand 869 states and 1603 transitions. [2023-12-20 13:27:04,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-20 13:27:04,589 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:27:04,589 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:27:04,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 13:27:04,590 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:27:04,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:27:04,590 INFO L85 PathProgramCache]: Analyzing trace with hash 2145916561, now seen corresponding path program 1 times [2023-12-20 13:27:04,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:27:04,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856684513] [2023-12-20 13:27:04,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:27:04,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:27:04,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:27:04,666 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 13:27:04,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:27:04,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856684513] [2023-12-20 13:27:04,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856684513] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:27:04,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:27:04,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 13:27:04,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819199102] [2023-12-20 13:27:04,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:27:04,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 13:27:04,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:27:04,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 13:27:04,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:27:04,669 INFO L87 Difference]: Start difference. First operand 869 states and 1603 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 13:27:04,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:27:04,699 INFO L93 Difference]: Finished difference Result 1018 states and 1842 transitions. [2023-12-20 13:27:04,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 13:27:04,700 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 13:27:04,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:27:04,703 INFO L225 Difference]: With dead ends: 1018 [2023-12-20 13:27:04,703 INFO L226 Difference]: Without dead ends: 938 [2023-12-20 13:27:04,704 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 13:27:04,704 INFO L413 NwaCegarLoop]: 1535 mSDtfsCounter, 1480 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1480 SdHoareTripleChecker+Valid, 1595 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:27:04,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1480 Valid, 1595 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:27:04,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 938 states. [2023-12-20 13:27:04,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 938 to 936. [2023-12-20 13:27:04,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 936 states, 934 states have (on average 1.8297644539614561) internal successors, (1709), 935 states have internal predecessors, (1709), 0 states have call successors, (0), 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 13:27:04,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 936 states to 936 states and 1709 transitions. [2023-12-20 13:27:04,722 INFO L78 Accepts]: Start accepts. Automaton has 936 states and 1709 transitions. Word has length 53 [2023-12-20 13:27:04,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:27:04,722 INFO L495 AbstractCegarLoop]: Abstraction has 936 states and 1709 transitions. [2023-12-20 13:27:04,723 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 13:27:04,723 INFO L276 IsEmpty]: Start isEmpty. Operand 936 states and 1709 transitions. [2023-12-20 13:27:04,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-20 13:27:04,723 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:27:04,724 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:27:04,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 13:27:04,724 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:27:04,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:27:04,724 INFO L85 PathProgramCache]: Analyzing trace with hash -2146905783, now seen corresponding path program 1 times [2023-12-20 13:27:04,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:27:04,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145995683] [2023-12-20 13:27:04,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:27:04,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:27:04,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:27:04,981 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 13:27:04,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:27:04,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145995683] [2023-12-20 13:27:04,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145995683] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:27:04,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:27:04,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 13:27:04,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467881415] [2023-12-20 13:27:04,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:27:04,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 13:27:04,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:27:04,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 13:27:04,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-20 13:27:04,984 INFO L87 Difference]: Start difference. First operand 936 states and 1709 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 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 13:27:05,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:27:05,207 INFO L93 Difference]: Finished difference Result 1085 states and 1945 transitions. [2023-12-20 13:27:05,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 13:27:05,208 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 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 13:27:05,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:27:05,212 INFO L225 Difference]: With dead ends: 1085 [2023-12-20 13:27:05,212 INFO L226 Difference]: Without dead ends: 938 [2023-12-20 13:27:05,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2023-12-20 13:27:05,213 INFO L413 NwaCegarLoop]: 1530 mSDtfsCounter, 7439 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7439 SdHoareTripleChecker+Valid, 1775 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 13:27:05,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7439 Valid, 1775 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 13:27:05,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 938 states. [2023-12-20 13:27:05,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 938 to 936. [2023-12-20 13:27:05,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 936 states, 934 states have (on average 1.8276231263383298) internal successors, (1707), 935 states have internal predecessors, (1707), 0 states have call successors, (0), 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 13:27:05,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 936 states to 936 states and 1707 transitions. [2023-12-20 13:27:05,232 INFO L78 Accepts]: Start accepts. Automaton has 936 states and 1707 transitions. Word has length 53 [2023-12-20 13:27:05,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:27:05,233 INFO L495 AbstractCegarLoop]: Abstraction has 936 states and 1707 transitions. [2023-12-20 13:27:05,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 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 13:27:05,233 INFO L276 IsEmpty]: Start isEmpty. Operand 936 states and 1707 transitions. [2023-12-20 13:27:05,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-20 13:27:05,234 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:27:05,234 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:27:05,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 13:27:05,234 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:27:05,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:27:05,235 INFO L85 PathProgramCache]: Analyzing trace with hash 2036322024, now seen corresponding path program 1 times [2023-12-20 13:27:05,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:27:05,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853611408] [2023-12-20 13:27:05,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:27:05,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:27:05,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:27:05,401 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 13:27:05,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:27:05,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853611408] [2023-12-20 13:27:05,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853611408] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:27:05,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:27:05,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 13:27:05,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936734432] [2023-12-20 13:27:05,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:27:05,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 13:27:05,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:27:05,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 13:27:05,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 13:27:05,404 INFO L87 Difference]: Start difference. First operand 936 states and 1707 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 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 13:27:05,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:27:05,449 INFO L93 Difference]: Finished difference Result 944 states and 1716 transitions. [2023-12-20 13:27:05,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 13:27:05,450 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2023-12-20 13:27:05,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:27:05,453 INFO L225 Difference]: With dead ends: 944 [2023-12-20 13:27:05,453 INFO L226 Difference]: Without dead ends: 942 [2023-12-20 13:27:05,454 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 13:27:05,455 INFO L413 NwaCegarLoop]: 1536 mSDtfsCounter, 1 mSDsluCounter, 3064 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4600 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 13:27:05,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4600 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:27:05,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 942 states. [2023-12-20 13:27:05,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 942 to 940. [2023-12-20 13:27:05,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 940 states, 938 states have (on average 1.8230277185501067) internal successors, (1710), 939 states have internal predecessors, (1710), 0 states have call successors, (0), 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 13:27:05,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 940 states to 940 states and 1710 transitions. [2023-12-20 13:27:05,478 INFO L78 Accepts]: Start accepts. Automaton has 940 states and 1710 transitions. Word has length 54 [2023-12-20 13:27:05,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:27:05,478 INFO L495 AbstractCegarLoop]: Abstraction has 940 states and 1710 transitions. [2023-12-20 13:27:05,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 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 13:27:05,478 INFO L276 IsEmpty]: Start isEmpty. Operand 940 states and 1710 transitions. [2023-12-20 13:27:05,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-20 13:27:05,479 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:27:05,479 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:27:05,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 13:27:05,480 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:27:05,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:27:05,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1922958665, now seen corresponding path program 1 times [2023-12-20 13:27:05,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:27:05,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050088377] [2023-12-20 13:27:05,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:27:05,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:27:05,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:27:05,539 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 13:27:05,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:27:05,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050088377] [2023-12-20 13:27:05,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050088377] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:27:05,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:27:05,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 13:27:05,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286731709] [2023-12-20 13:27:05,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:27:05,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 13:27:05,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:27:05,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 13:27:05,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:27:05,542 INFO L87 Difference]: Start difference. First operand 940 states and 1710 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 13:27:05,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:27:05,574 INFO L93 Difference]: Finished difference Result 1102 states and 1963 transitions. [2023-12-20 13:27:05,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 13:27:05,575 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 13:27:05,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:27:05,579 INFO L225 Difference]: With dead ends: 1102 [2023-12-20 13:27:05,579 INFO L226 Difference]: Without dead ends: 1018 [2023-12-20 13:27:05,580 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 13:27:05,581 INFO L413 NwaCegarLoop]: 1587 mSDtfsCounter, 1494 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1494 SdHoareTripleChecker+Valid, 1653 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 13:27:05,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1494 Valid, 1653 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:27:05,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1018 states. [2023-12-20 13:27:05,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1018 to 1016. [2023-12-20 13:27:05,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1016 states, 1014 states have (on average 1.801775147928994) internal successors, (1827), 1015 states have internal predecessors, (1827), 0 states have call successors, (0), 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 13:27:05,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1016 states to 1016 states and 1827 transitions. [2023-12-20 13:27:05,602 INFO L78 Accepts]: Start accepts. Automaton has 1016 states and 1827 transitions. Word has length 55 [2023-12-20 13:27:05,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:27:05,602 INFO L495 AbstractCegarLoop]: Abstraction has 1016 states and 1827 transitions. [2023-12-20 13:27:05,603 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 13:27:05,603 INFO L276 IsEmpty]: Start isEmpty. Operand 1016 states and 1827 transitions. [2023-12-20 13:27:05,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-20 13:27:05,604 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:27:05,604 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:27:05,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 13:27:05,604 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:27:05,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:27:05,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1694319433, now seen corresponding path program 1 times [2023-12-20 13:27:05,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:27:05,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295414373] [2023-12-20 13:27:05,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:27:05,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:27:05,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:27:05,655 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 13:27:05,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:27:05,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295414373] [2023-12-20 13:27:05,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295414373] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:27:05,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:27:05,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 13:27:05,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428070414] [2023-12-20 13:27:05,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:27:05,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 13:27:05,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:27:05,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 13:27:05,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:27:05,658 INFO L87 Difference]: Start difference. First operand 1016 states and 1827 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 13:27:05,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:27:05,693 INFO L93 Difference]: Finished difference Result 1442 states and 2487 transitions. [2023-12-20 13:27:05,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 13:27:05,694 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 13:27:05,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:27:05,698 INFO L225 Difference]: With dead ends: 1442 [2023-12-20 13:27:05,698 INFO L226 Difference]: Without dead ends: 1217 [2023-12-20 13:27:05,699 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 13:27:05,699 INFO L413 NwaCegarLoop]: 1579 mSDtfsCounter, 1490 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1490 SdHoareTripleChecker+Valid, 1653 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 13:27:05,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1490 Valid, 1653 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:27:05,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1217 states. [2023-12-20 13:27:05,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1217 to 1215. [2023-12-20 13:27:05,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1215 states, 1213 states have (on average 1.7551525144270403) internal successors, (2129), 1214 states have internal predecessors, (2129), 0 states have call successors, (0), 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 13:27:05,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1215 states to 1215 states and 2129 transitions. [2023-12-20 13:27:05,726 INFO L78 Accepts]: Start accepts. Automaton has 1215 states and 2129 transitions. Word has length 55 [2023-12-20 13:27:05,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:27:05,726 INFO L495 AbstractCegarLoop]: Abstraction has 1215 states and 2129 transitions. [2023-12-20 13:27:05,727 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 13:27:05,727 INFO L276 IsEmpty]: Start isEmpty. Operand 1215 states and 2129 transitions. [2023-12-20 13:27:05,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-20 13:27:05,727 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:27:05,728 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:27:05,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 13:27:05,728 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:27:05,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:27:05,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1068663369, now seen corresponding path program 1 times [2023-12-20 13:27:05,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:27:05,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095965134] [2023-12-20 13:27:05,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:27:05,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:27:05,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:27:05,789 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 13:27:05,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:27:05,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095965134] [2023-12-20 13:27:05,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095965134] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:27:05,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:27:05,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 13:27:05,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503420586] [2023-12-20 13:27:05,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:27:05,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 13:27:05,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:27:05,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 13:27:05,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:27:05,791 INFO L87 Difference]: Start difference. First operand 1215 states and 2129 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 13:27:05,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:27:05,831 INFO L93 Difference]: Finished difference Result 2015 states and 3351 transitions. [2023-12-20 13:27:05,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 13:27:05,832 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 13:27:05,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:27:05,837 INFO L225 Difference]: With dead ends: 2015 [2023-12-20 13:27:05,837 INFO L226 Difference]: Without dead ends: 1591 [2023-12-20 13:27:05,838 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 13:27:05,839 INFO L413 NwaCegarLoop]: 1577 mSDtfsCounter, 1488 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1488 SdHoareTripleChecker+Valid, 1655 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 13:27:05,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1488 Valid, 1655 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:27:05,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1591 states. [2023-12-20 13:27:05,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1591 to 1589. [2023-12-20 13:27:05,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1589 states, 1587 states have (on average 1.6918714555765595) internal successors, (2685), 1588 states have internal predecessors, (2685), 0 states have call successors, (0), 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 13:27:05,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1589 states to 1589 states and 2685 transitions. [2023-12-20 13:27:05,881 INFO L78 Accepts]: Start accepts. Automaton has 1589 states and 2685 transitions. Word has length 55 [2023-12-20 13:27:05,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:27:05,881 INFO L495 AbstractCegarLoop]: Abstraction has 1589 states and 2685 transitions. [2023-12-20 13:27:05,881 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 13:27:05,882 INFO L276 IsEmpty]: Start isEmpty. Operand 1589 states and 2685 transitions. [2023-12-20 13:27:05,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-20 13:27:05,882 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:27:05,882 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:27:05,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 13:27:05,883 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:27:05,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:27:05,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1957396809, now seen corresponding path program 1 times [2023-12-20 13:27:05,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:27:05,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738347622] [2023-12-20 13:27:05,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:27:05,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:27:05,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:27:05,937 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 13:27:05,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:27:05,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738347622] [2023-12-20 13:27:05,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738347622] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:27:05,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:27:05,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 13:27:05,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622956793] [2023-12-20 13:27:05,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:27:05,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 13:27:05,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:27:05,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 13:27:05,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:27:05,939 INFO L87 Difference]: Start difference. First operand 1589 states and 2685 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 13:27:05,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:27:05,993 INFO L93 Difference]: Finished difference Result 3089 states and 4935 transitions. [2023-12-20 13:27:05,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 13:27:05,993 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 13:27:05,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:27:06,001 INFO L225 Difference]: With dead ends: 3089 [2023-12-20 13:27:06,001 INFO L226 Difference]: Without dead ends: 2291 [2023-12-20 13:27:06,002 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 13:27:06,003 INFO L413 NwaCegarLoop]: 1575 mSDtfsCounter, 1486 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1486 SdHoareTripleChecker+Valid, 1657 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 13:27:06,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1486 Valid, 1657 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:27:06,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2291 states. [2023-12-20 13:27:06,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2291 to 2289. [2023-12-20 13:27:06,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2289 states, 2287 states have (on average 1.6182772190642762) internal successors, (3701), 2288 states have internal predecessors, (3701), 0 states have call successors, (0), 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 13:27:06,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2289 states to 2289 states and 3701 transitions. [2023-12-20 13:27:06,093 INFO L78 Accepts]: Start accepts. Automaton has 2289 states and 3701 transitions. Word has length 55 [2023-12-20 13:27:06,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:27:06,093 INFO L495 AbstractCegarLoop]: Abstraction has 2289 states and 3701 transitions. [2023-12-20 13:27:06,093 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 13:27:06,093 INFO L276 IsEmpty]: Start isEmpty. Operand 2289 states and 3701 transitions. [2023-12-20 13:27:06,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-20 13:27:06,094 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:27:06,094 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:27:06,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 13:27:06,094 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:27:06,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:27:06,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1654375497, now seen corresponding path program 1 times [2023-12-20 13:27:06,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:27:06,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483523756] [2023-12-20 13:27:06,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:27:06,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:27:06,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:27:06,132 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 13:27:06,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:27:06,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483523756] [2023-12-20 13:27:06,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483523756] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:27:06,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:27:06,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 13:27:06,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232016759] [2023-12-20 13:27:06,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:27:06,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 13:27:06,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:27:06,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 13:27:06,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:27:06,134 INFO L87 Difference]: Start difference. First operand 2289 states and 3701 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 13:27:06,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:27:06,201 INFO L93 Difference]: Finished difference Result 5093 states and 7815 transitions. [2023-12-20 13:27:06,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 13:27:06,202 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 13:27:06,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:27:06,213 INFO L225 Difference]: With dead ends: 5093 [2023-12-20 13:27:06,213 INFO L226 Difference]: Without dead ends: 3595 [2023-12-20 13:27:06,215 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 13:27:06,215 INFO L413 NwaCegarLoop]: 1589 mSDtfsCounter, 1492 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1492 SdHoareTripleChecker+Valid, 1659 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 13:27:06,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1492 Valid, 1659 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:27:06,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3595 states. [2023-12-20 13:27:06,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3595 to 3593. [2023-12-20 13:27:06,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3593 states, 3591 states have (on average 1.5430242272347536) internal successors, (5541), 3592 states have internal predecessors, (5541), 0 states have call successors, (0), 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 13:27:06,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3593 states to 3593 states and 5541 transitions. [2023-12-20 13:27:06,302 INFO L78 Accepts]: Start accepts. Automaton has 3593 states and 5541 transitions. Word has length 55 [2023-12-20 13:27:06,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:27:06,302 INFO L495 AbstractCegarLoop]: Abstraction has 3593 states and 5541 transitions. [2023-12-20 13:27:06,302 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 13:27:06,303 INFO L276 IsEmpty]: Start isEmpty. Operand 3593 states and 5541 transitions. [2023-12-20 13:27:06,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-20 13:27:06,303 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:27:06,303 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:27:06,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 13:27:06,304 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:27:06,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:27:06,304 INFO L85 PathProgramCache]: Analyzing trace with hash 707266715, now seen corresponding path program 1 times [2023-12-20 13:27:06,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:27:06,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196201680] [2023-12-20 13:27:06,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:27:06,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:27:06,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:27:06,353 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 13:27:06,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:27:06,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196201680] [2023-12-20 13:27:06,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196201680] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:27:06,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:27:06,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 13:27:06,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114574498] [2023-12-20 13:27:06,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:27:06,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 13:27:06,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:27:06,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 13:27:06,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:27:06,355 INFO L87 Difference]: Start difference. First operand 3593 states and 5541 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 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 13:27:09,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:27:09,542 INFO L93 Difference]: Finished difference Result 5097 states and 8414 transitions. [2023-12-20 13:27:09,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 13:27:09,542 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2023-12-20 13:27:09,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:27:09,557 INFO L225 Difference]: With dead ends: 5097 [2023-12-20 13:27:09,557 INFO L226 Difference]: Without dead ends: 4344 [2023-12-20 13:27:09,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:27:09,560 INFO L413 NwaCegarLoop]: 566 mSDtfsCounter, 840 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2264 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 840 SdHoareTripleChecker+Valid, 573 SdHoareTripleChecker+Invalid, 2916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 2264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-20 13:27:09,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [840 Valid, 573 Invalid, 2916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 2264 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-20 13:27:09,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4344 states. [2023-12-20 13:27:09,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4344 to 4344. [2023-12-20 13:27:09,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4344 states, 4342 states have (on average 1.501612160294795) internal successors, (6520), 4343 states have internal predecessors, (6520), 0 states have call successors, (0), 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 13:27:09,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4344 states to 4344 states and 6520 transitions. [2023-12-20 13:27:09,688 INFO L78 Accepts]: Start accepts. Automaton has 4344 states and 6520 transitions. Word has length 62 [2023-12-20 13:27:09,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:27:09,688 INFO L495 AbstractCegarLoop]: Abstraction has 4344 states and 6520 transitions. [2023-12-20 13:27:09,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 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 13:27:09,688 INFO L276 IsEmpty]: Start isEmpty. Operand 4344 states and 6520 transitions. [2023-12-20 13:27:09,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-20 13:27:09,690 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:27:09,690 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:27:09,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 13:27:09,690 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:27:09,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:27:09,691 INFO L85 PathProgramCache]: Analyzing trace with hash 285878162, now seen corresponding path program 1 times [2023-12-20 13:27:09,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:27:09,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001868455] [2023-12-20 13:27:09,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:27:09,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:27:09,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:27:09,816 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 13:27:09,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:27:09,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001868455] [2023-12-20 13:27:09,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001868455] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:27:09,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:27:09,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 13:27:09,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064182178] [2023-12-20 13:27:09,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:27:09,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 13:27:09,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:27:09,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 13:27:09,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 13:27:09,818 INFO L87 Difference]: Start difference. First operand 4344 states and 6520 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 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 13:27:10,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:27:10,262 INFO L93 Difference]: Finished difference Result 18132 states and 26510 transitions. [2023-12-20 13:27:10,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 13:27:10,263 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 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 73 [2023-12-20 13:27:10,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:27:10,316 INFO L225 Difference]: With dead ends: 18132 [2023-12-20 13:27:10,316 INFO L226 Difference]: Without dead ends: 16146 [2023-12-20 13:27:10,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-20 13:27:10,325 INFO L413 NwaCegarLoop]: 1596 mSDtfsCounter, 6293 mSDsluCounter, 1945 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6293 SdHoareTripleChecker+Valid, 3541 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 13:27:10,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6293 Valid, 3541 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 13:27:10,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16146 states. [2023-12-20 13:27:10,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16146 to 6744. [2023-12-20 13:27:10,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6744 states, 6742 states have (on average 1.4773064372589737) internal successors, (9960), 6743 states have internal predecessors, (9960), 0 states have call successors, (0), 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 13:27:10,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6744 states to 6744 states and 9960 transitions. [2023-12-20 13:27:10,582 INFO L78 Accepts]: Start accepts. Automaton has 6744 states and 9960 transitions. Word has length 73 [2023-12-20 13:27:10,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:27:10,582 INFO L495 AbstractCegarLoop]: Abstraction has 6744 states and 9960 transitions. [2023-12-20 13:27:10,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 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 13:27:10,583 INFO L276 IsEmpty]: Start isEmpty. Operand 6744 states and 9960 transitions. [2023-12-20 13:27:10,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-20 13:27:10,584 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:27:10,584 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:27:10,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 13:27:10,585 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:27:10,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:27:10,585 INFO L85 PathProgramCache]: Analyzing trace with hash 57238930, now seen corresponding path program 1 times [2023-12-20 13:27:10,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:27:10,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617386101] [2023-12-20 13:27:10,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:27:10,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:27:10,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:27:10,723 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-20 13:27:10,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:27:10,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617386101] [2023-12-20 13:27:10,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617386101] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:27:10,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:27:10,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 13:27:10,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768992351] [2023-12-20 13:27:10,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:27:10,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 13:27:10,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:27:10,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 13:27:10,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 13:27:10,724 INFO L87 Difference]: Start difference. First operand 6744 states and 9960 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 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 13:27:11,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:27:11,155 INFO L93 Difference]: Finished difference Result 20932 states and 30542 transitions. [2023-12-20 13:27:11,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 13:27:11,156 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 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 73 [2023-12-20 13:27:11,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:27:11,190 INFO L225 Difference]: With dead ends: 20932 [2023-12-20 13:27:11,191 INFO L226 Difference]: Without dead ends: 18130 [2023-12-20 13:27:11,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-20 13:27:11,200 INFO L413 NwaCegarLoop]: 1596 mSDtfsCounter, 6338 mSDsluCounter, 1978 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6338 SdHoareTripleChecker+Valid, 3574 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 13:27:11,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6338 Valid, 3574 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 13:27:11,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18130 states. [2023-12-20 13:27:11,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18130 to 10536. [2023-12-20 13:27:11,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10536 states, 10534 states have (on average 1.4604138978545662) internal successors, (15384), 10535 states have internal predecessors, (15384), 0 states have call successors, (0), 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 13:27:11,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10536 states to 10536 states and 15384 transitions. [2023-12-20 13:27:11,542 INFO L78 Accepts]: Start accepts. Automaton has 10536 states and 15384 transitions. Word has length 73 [2023-12-20 13:27:11,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:27:11,543 INFO L495 AbstractCegarLoop]: Abstraction has 10536 states and 15384 transitions. [2023-12-20 13:27:11,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 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 13:27:11,543 INFO L276 IsEmpty]: Start isEmpty. Operand 10536 states and 15384 transitions. [2023-12-20 13:27:11,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-20 13:27:11,545 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:27:11,545 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:27:11,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 13:27:11,545 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:27:11,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:27:11,545 INFO L85 PathProgramCache]: Analyzing trace with hash -568417134, now seen corresponding path program 1 times [2023-12-20 13:27:11,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:27:11,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091342041] [2023-12-20 13:27:11,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:27:11,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:27:11,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:27:11,661 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-20 13:27:11,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:27:11,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091342041] [2023-12-20 13:27:11,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091342041] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:27:11,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:27:11,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 13:27:11,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097604487] [2023-12-20 13:27:11,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:27:11,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 13:27:11,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:27:11,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 13:27:11,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 13:27:11,663 INFO L87 Difference]: Start difference. First operand 10536 states and 15384 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 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 13:27:12,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:27:12,209 INFO L93 Difference]: Finished difference Result 23732 states and 34558 transitions. [2023-12-20 13:27:12,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 13:27:12,210 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 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 73 [2023-12-20 13:27:12,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:27:12,246 INFO L225 Difference]: With dead ends: 23732 [2023-12-20 13:27:12,246 INFO L226 Difference]: Without dead ends: 20930 [2023-12-20 13:27:12,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-20 13:27:12,258 INFO L413 NwaCegarLoop]: 1594 mSDtfsCounter, 6383 mSDsluCounter, 1945 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6383 SdHoareTripleChecker+Valid, 3539 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 13:27:12,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6383 Valid, 3539 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 13:27:12,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20930 states. [2023-12-20 13:27:12,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20930 to 13336. [2023-12-20 13:27:12,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13336 states, 13334 states have (on average 1.4549272536373181) internal successors, (19400), 13335 states have internal predecessors, (19400), 0 states have call successors, (0), 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 13:27:12,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13336 states to 13336 states and 19400 transitions. [2023-12-20 13:27:12,687 INFO L78 Accepts]: Start accepts. Automaton has 13336 states and 19400 transitions. Word has length 73 [2023-12-20 13:27:12,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:27:12,687 INFO L495 AbstractCegarLoop]: Abstraction has 13336 states and 19400 transitions. [2023-12-20 13:27:12,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 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 13:27:12,687 INFO L276 IsEmpty]: Start isEmpty. Operand 13336 states and 19400 transitions. [2023-12-20 13:27:12,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-20 13:27:12,689 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:27:12,689 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:27:12,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 13:27:12,690 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:27:12,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:27:12,690 INFO L85 PathProgramCache]: Analyzing trace with hash 320316306, now seen corresponding path program 1 times [2023-12-20 13:27:12,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:27:12,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192094377] [2023-12-20 13:27:12,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:27:12,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:27:12,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:27:12,834 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-20 13:27:12,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:27:12,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192094377] [2023-12-20 13:27:12,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192094377] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:27:12,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:27:12,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 13:27:12,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707292078] [2023-12-20 13:27:12,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:27:12,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 13:27:12,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:27:12,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 13:27:12,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 13:27:12,837 INFO L87 Difference]: Start difference. First operand 13336 states and 19400 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 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 13:27:13,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:27:13,526 INFO L93 Difference]: Finished difference Result 26532 states and 38574 transitions. [2023-12-20 13:27:13,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 13:27:13,527 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 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 73 [2023-12-20 13:27:13,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:27:13,570 INFO L225 Difference]: With dead ends: 26532 [2023-12-20 13:27:13,570 INFO L226 Difference]: Without dead ends: 23730 [2023-12-20 13:27:13,582 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-20 13:27:13,582 INFO L413 NwaCegarLoop]: 1594 mSDtfsCounter, 6339 mSDsluCounter, 1996 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6339 SdHoareTripleChecker+Valid, 3590 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 13:27:13,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6339 Valid, 3590 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 13:27:13,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23730 states. [2023-12-20 13:27:14,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23730 to 16136. [2023-12-20 13:27:14,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16136 states, 16134 states have (on average 1.4513449857443907) internal successors, (23416), 16135 states have internal predecessors, (23416), 0 states have call successors, (0), 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 13:27:14,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16136 states to 16136 states and 23416 transitions. [2023-12-20 13:27:14,106 INFO L78 Accepts]: Start accepts. Automaton has 16136 states and 23416 transitions. Word has length 73 [2023-12-20 13:27:14,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:27:14,106 INFO L495 AbstractCegarLoop]: Abstraction has 16136 states and 23416 transitions. [2023-12-20 13:27:14,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 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 13:27:14,106 INFO L276 IsEmpty]: Start isEmpty. Operand 16136 states and 23416 transitions. [2023-12-20 13:27:14,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-20 13:27:14,108 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:27:14,108 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:27:14,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 13:27:14,109 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:27:14,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:27:14,109 INFO L85 PathProgramCache]: Analyzing trace with hash 17294994, now seen corresponding path program 1 times [2023-12-20 13:27:14,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:27:14,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80859986] [2023-12-20 13:27:14,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:27:14,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:27:14,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:27:14,243 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-20 13:27:14,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:27:14,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80859986] [2023-12-20 13:27:14,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80859986] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:27:14,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:27:14,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 13:27:14,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195676583] [2023-12-20 13:27:14,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:27:14,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 13:27:14,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:27:14,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 13:27:14,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 13:27:14,245 INFO L87 Difference]: Start difference. First operand 16136 states and 23416 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 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 13:27:14,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:27:14,823 INFO L93 Difference]: Finished difference Result 29332 states and 42590 transitions. [2023-12-20 13:27:14,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 13:27:14,823 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 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 73 [2023-12-20 13:27:14,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:27:14,867 INFO L225 Difference]: With dead ends: 29332 [2023-12-20 13:27:14,867 INFO L226 Difference]: Without dead ends: 26530 [2023-12-20 13:27:14,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-20 13:27:14,877 INFO L413 NwaCegarLoop]: 1593 mSDtfsCounter, 6295 mSDsluCounter, 2058 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6295 SdHoareTripleChecker+Valid, 3651 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 13:27:14,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6295 Valid, 3651 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 13:27:14,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26530 states. [2023-12-20 13:27:15,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26530 to 18936. [2023-12-20 13:27:15,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18936 states, 18934 states have (on average 1.4488222245695574) internal successors, (27432), 18935 states have internal predecessors, (27432), 0 states have call successors, (0), 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 13:27:15,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18936 states to 18936 states and 27432 transitions. [2023-12-20 13:27:15,428 INFO L78 Accepts]: Start accepts. Automaton has 18936 states and 27432 transitions. Word has length 73 [2023-12-20 13:27:15,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:27:15,429 INFO L495 AbstractCegarLoop]: Abstraction has 18936 states and 27432 transitions. [2023-12-20 13:27:15,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 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 13:27:15,429 INFO L276 IsEmpty]: Start isEmpty. Operand 18936 states and 27432 transitions. [2023-12-20 13:27:15,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-20 13:27:15,431 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:27:15,431 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:27:15,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-20 13:27:15,431 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:27:15,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:27:15,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1436271534, now seen corresponding path program 1 times [2023-12-20 13:27:15,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:27:15,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142689912] [2023-12-20 13:27:15,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:27:15,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:27:15,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:27:15,519 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:27:15,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:27:15,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142689912] [2023-12-20 13:27:15,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142689912] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:27:15,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:27:15,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 13:27:15,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955868408] [2023-12-20 13:27:15,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:27:15,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 13:27:15,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:27:15,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 13:27:15,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:27:15,520 INFO L87 Difference]: Start difference. First operand 18936 states and 27432 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 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 13:27:15,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:27:15,842 INFO L93 Difference]: Finished difference Result 36332 states and 52410 transitions. [2023-12-20 13:27:15,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 13:27:15,918 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2023-12-20 13:27:15,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:27:15,948 INFO L225 Difference]: With dead ends: 36332 [2023-12-20 13:27:15,948 INFO L226 Difference]: Without dead ends: 18938 [2023-12-20 13:27:15,965 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 13:27:15,966 INFO L413 NwaCegarLoop]: 1571 mSDtfsCounter, 45 mSDsluCounter, 1526 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 3097 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 13:27:15,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 3097 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:27:15,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18938 states. [2023-12-20 13:27:16,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18938 to 18936. [2023-12-20 13:27:16,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18936 states, 18934 states have (on average 1.433188972219288) internal successors, (27136), 18935 states have internal predecessors, (27136), 0 states have call successors, (0), 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 13:27:16,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18936 states to 18936 states and 27136 transitions. [2023-12-20 13:27:16,480 INFO L78 Accepts]: Start accepts. Automaton has 18936 states and 27136 transitions. Word has length 74 [2023-12-20 13:27:16,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:27:16,480 INFO L495 AbstractCegarLoop]: Abstraction has 18936 states and 27136 transitions. [2023-12-20 13:27:16,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 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 13:27:16,481 INFO L276 IsEmpty]: Start isEmpty. Operand 18936 states and 27136 transitions. [2023-12-20 13:27:16,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-20 13:27:16,485 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:27:16,485 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:27:16,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-20 13:27:16,486 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:27:16,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:27:16,486 INFO L85 PathProgramCache]: Analyzing trace with hash -702984806, now seen corresponding path program 1 times [2023-12-20 13:27:16,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:27:16,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259683977] [2023-12-20 13:27:16,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:27:16,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:27:16,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:27:16,564 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:27:16,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:27:16,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259683977] [2023-12-20 13:27:16,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259683977] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:27:16,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:27:16,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 13:27:16,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275100623] [2023-12-20 13:27:16,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:27:16,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 13:27:16,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:27:16,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 13:27:16,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:27:16,566 INFO L87 Difference]: Start difference. First operand 18936 states and 27136 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 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 13:27:16,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:27:16,751 INFO L93 Difference]: Finished difference Result 25406 states and 36413 transitions. [2023-12-20 13:27:16,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 13:27:16,752 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 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 75 [2023-12-20 13:27:16,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:27:16,762 INFO L225 Difference]: With dead ends: 25406 [2023-12-20 13:27:16,763 INFO L226 Difference]: Without dead ends: 8012 [2023-12-20 13:27:16,778 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 13:27:16,779 INFO L413 NwaCegarLoop]: 1569 mSDtfsCounter, 39 mSDsluCounter, 1525 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 3094 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 13:27:16,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 3094 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:27:16,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8012 states. [2023-12-20 13:27:16,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8012 to 8005. [2023-12-20 13:27:16,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8005 states, 8003 states have (on average 1.4520804698238161) internal successors, (11621), 8004 states have internal predecessors, (11621), 0 states have call successors, (0), 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 13:27:16,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8005 states to 8005 states and 11621 transitions. [2023-12-20 13:27:16,988 INFO L78 Accepts]: Start accepts. Automaton has 8005 states and 11621 transitions. Word has length 75 [2023-12-20 13:27:16,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:27:16,988 INFO L495 AbstractCegarLoop]: Abstraction has 8005 states and 11621 transitions. [2023-12-20 13:27:16,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 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 13:27:16,988 INFO L276 IsEmpty]: Start isEmpty. Operand 8005 states and 11621 transitions. [2023-12-20 13:27:16,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-20 13:27:16,989 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:27:16,989 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:27:16,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-20 13:27:16,990 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:27:16,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:27:16,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1790502652, now seen corresponding path program 1 times [2023-12-20 13:27:16,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:27:16,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061955249] [2023-12-20 13:27:16,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:27:16,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:27:17,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:27:17,080 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:27:17,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:27:17,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061955249] [2023-12-20 13:27:17,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061955249] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:27:17,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:27:17,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 13:27:17,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685322647] [2023-12-20 13:27:17,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:27:17,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 13:27:17,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:27:17,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 13:27:17,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:27:17,081 INFO L87 Difference]: Start difference. First operand 8005 states and 11621 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 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 13:27:17,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:27:17,175 INFO L93 Difference]: Finished difference Result 11233 states and 16199 transitions. [2023-12-20 13:27:17,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 13:27:17,176 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2023-12-20 13:27:17,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:27:17,181 INFO L225 Difference]: With dead ends: 11233 [2023-12-20 13:27:17,181 INFO L226 Difference]: Without dead ends: 4783 [2023-12-20 13:27:17,187 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 13:27:17,188 INFO L413 NwaCegarLoop]: 1563 mSDtfsCounter, 41 mSDsluCounter, 1510 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 3073 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 13:27:17,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 3073 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:27:17,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4783 states. [2023-12-20 13:27:17,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4783 to 4781. [2023-12-20 13:27:17,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4781 states, 4779 states have (on average 1.463276836158192) internal successors, (6993), 4780 states have internal predecessors, (6993), 0 states have call successors, (0), 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 13:27:17,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4781 states to 4781 states and 6993 transitions. [2023-12-20 13:27:17,342 INFO L78 Accepts]: Start accepts. Automaton has 4781 states and 6993 transitions. Word has length 76 [2023-12-20 13:27:17,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:27:17,342 INFO L495 AbstractCegarLoop]: Abstraction has 4781 states and 6993 transitions. [2023-12-20 13:27:17,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 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 13:27:17,342 INFO L276 IsEmpty]: Start isEmpty. Operand 4781 states and 6993 transitions. [2023-12-20 13:27:17,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-20 13:27:17,343 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:27:17,343 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:27:17,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-20 13:27:17,344 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:27:17,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:27:17,344 INFO L85 PathProgramCache]: Analyzing trace with hash -626519094, now seen corresponding path program 1 times [2023-12-20 13:27:17,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:27:17,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322314322] [2023-12-20 13:27:17,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:27:17,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:27:17,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:27:17,417 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:27:17,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:27:17,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322314322] [2023-12-20 13:27:17,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322314322] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:27:17,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:27:17,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 13:27:17,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192443233] [2023-12-20 13:27:17,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:27:17,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 13:27:17,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:27:17,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 13:27:17,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:27:17,420 INFO L87 Difference]: Start difference. First operand 4781 states and 6993 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 13:27:17,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:27:17,478 INFO L93 Difference]: Finished difference Result 6397 states and 9257 transitions. [2023-12-20 13:27:17,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 13:27:17,478 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2023-12-20 13:27:17,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:27:17,481 INFO L225 Difference]: With dead ends: 6397 [2023-12-20 13:27:17,481 INFO L226 Difference]: Without dead ends: 3171 [2023-12-20 13:27:17,486 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 13:27:17,487 INFO L413 NwaCegarLoop]: 1556 mSDtfsCounter, 38 mSDsluCounter, 1502 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 3058 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 13:27:17,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 3058 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:27:17,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3171 states. [2023-12-20 13:27:17,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3171 to 3169. [2023-12-20 13:27:17,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3169 states, 3167 states have (on average 1.4856330912535523) internal successors, (4705), 3168 states have internal predecessors, (4705), 0 states have call successors, (0), 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 13:27:17,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3169 states to 3169 states and 4705 transitions. [2023-12-20 13:27:17,551 INFO L78 Accepts]: Start accepts. Automaton has 3169 states and 4705 transitions. Word has length 78 [2023-12-20 13:27:17,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:27:17,551 INFO L495 AbstractCegarLoop]: Abstraction has 3169 states and 4705 transitions. [2023-12-20 13:27:17,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 13:27:17,552 INFO L276 IsEmpty]: Start isEmpty. Operand 3169 states and 4705 transitions. [2023-12-20 13:27:17,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-20 13:27:17,552 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:27:17,553 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, 1, 1, 1, 1, 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 13:27:17,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-20 13:27:17,553 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:27:17,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:27:17,553 INFO L85 PathProgramCache]: Analyzing trace with hash 439495192, now seen corresponding path program 1 times [2023-12-20 13:27:17,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:27:17,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155983245] [2023-12-20 13:27:17,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:27:17,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:27:17,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:27:17,664 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:27:17,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:27:17,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155983245] [2023-12-20 13:27:17,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155983245] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:27:17,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:27:17,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 13:27:17,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204753504] [2023-12-20 13:27:17,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:27:17,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 13:27:17,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:27:17,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 13:27:17,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:27:17,666 INFO L87 Difference]: Start difference. First operand 3169 states and 4705 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 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 13:27:17,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:27:17,706 INFO L93 Difference]: Finished difference Result 3979 states and 5825 transitions. [2023-12-20 13:27:17,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 13:27:17,706 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2023-12-20 13:27:17,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:27:17,709 INFO L225 Difference]: With dead ends: 3979 [2023-12-20 13:27:17,709 INFO L226 Difference]: Without dead ends: 2365 [2023-12-20 13:27:17,711 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 13:27:17,711 INFO L413 NwaCegarLoop]: 1549 mSDtfsCounter, 35 mSDsluCounter, 1494 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 3043 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 13:27:17,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 3043 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:27:17,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2365 states. [2023-12-20 13:27:17,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2365 to 2363. [2023-12-20 13:27:17,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2363 states, 2361 states have (on average 1.513765353663702) internal successors, (3574), 2362 states have internal predecessors, (3574), 0 states have call successors, (0), 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 13:27:17,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2363 states to 2363 states and 3574 transitions. [2023-12-20 13:27:17,750 INFO L78 Accepts]: Start accepts. Automaton has 2363 states and 3574 transitions. Word has length 80 [2023-12-20 13:27:17,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:27:17,751 INFO L495 AbstractCegarLoop]: Abstraction has 2363 states and 3574 transitions. [2023-12-20 13:27:17,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 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 13:27:17,751 INFO L276 IsEmpty]: Start isEmpty. Operand 2363 states and 3574 transitions. [2023-12-20 13:27:17,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-20 13:27:17,752 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:27:17,752 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, 1, 1, 1, 1, 1, 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 13:27:17,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-20 13:27:17,752 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:27:17,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:27:17,752 INFO L85 PathProgramCache]: Analyzing trace with hash 397937126, now seen corresponding path program 1 times [2023-12-20 13:27:17,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:27:17,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505215602] [2023-12-20 13:27:17,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:27:17,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:27:17,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:27:17,879 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 13:27:17,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:27:17,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505215602] [2023-12-20 13:27:17,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505215602] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:27:17,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062772389] [2023-12-20 13:27:17,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:27:17,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:27:17,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:27:17,882 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 13:27:17,891 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 13:27:18,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:27:18,025 INFO L262 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-20 13:27:18,033 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:27:18,182 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 13:27:18,182 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:27:18,475 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 13:27:18,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062772389] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:27:18,475 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:27:18,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 8 [2023-12-20 13:27:18,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900590914] [2023-12-20 13:27:18,476 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:27:18,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 13:27:18,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:27:18,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 13:27:18,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2023-12-20 13:27:18,479 INFO L87 Difference]: Start difference. First operand 2363 states and 3574 transitions. Second operand has 8 states, 8 states have (on average 26.0) internal successors, (208), 8 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:27:18,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:27:18,617 INFO L93 Difference]: Finished difference Result 4306 states and 6176 transitions. [2023-12-20 13:27:18,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 13:27:18,617 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 26.0) internal successors, (208), 8 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2023-12-20 13:27:18,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:27:18,621 INFO L225 Difference]: With dead ends: 4306 [2023-12-20 13:27:18,621 INFO L226 Difference]: Without dead ends: 3498 [2023-12-20 13:27:18,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=38, Unknown=0, NotChecked=0, Total=72 [2023-12-20 13:27:18,623 INFO L413 NwaCegarLoop]: 1534 mSDtfsCounter, 3042 mSDsluCounter, 1720 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3042 SdHoareTripleChecker+Valid, 3254 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:27:18,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3042 Valid, 3254 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:27:18,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3498 states. [2023-12-20 13:27:18,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3498 to 3431. [2023-12-20 13:27:18,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3431 states, 3429 states have (on average 1.4362787984835228) internal successors, (4925), 3430 states have internal predecessors, (4925), 0 states have call successors, (0), 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 13:27:18,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3431 states to 3431 states and 4925 transitions. [2023-12-20 13:27:18,724 INFO L78 Accepts]: Start accepts. Automaton has 3431 states and 4925 transitions. Word has length 82 [2023-12-20 13:27:18,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:27:18,724 INFO L495 AbstractCegarLoop]: Abstraction has 3431 states and 4925 transitions. [2023-12-20 13:27:18,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 26.0) internal successors, (208), 8 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:27:18,725 INFO L276 IsEmpty]: Start isEmpty. Operand 3431 states and 4925 transitions. [2023-12-20 13:27:18,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-20 13:27:18,726 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:27:18,726 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, 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 13:27:18,735 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-20 13:27:18,934 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,SelfDestructingSolverStorable22 [2023-12-20 13:27:18,935 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:27:18,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:27:18,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1527392688, now seen corresponding path program 1 times [2023-12-20 13:27:18,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:27:18,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323992970] [2023-12-20 13:27:18,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:27:18,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:27:18,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:27:19,923 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:27:19,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:27:19,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323992970] [2023-12-20 13:27:19,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323992970] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:27:19,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092085033] [2023-12-20 13:27:19,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:27:19,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:27:19,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:27:19,925 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 13:27:19,949 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 13:27:20,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:27:20,051 INFO L262 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 13:27:20,055 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:27:20,579 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:27:20,579 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:27:21,873 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:27:21,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1092085033] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:27:21,874 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:27:21,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 12] total 31 [2023-12-20 13:27:21,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133551472] [2023-12-20 13:27:21,874 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:27:21,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-20 13:27:21,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:27:21,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-20 13:27:21,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=802, Unknown=0, NotChecked=0, Total=930 [2023-12-20 13:27:21,876 INFO L87 Difference]: Start difference. First operand 3431 states and 4925 transitions. Second operand has 31 states, 31 states have (on average 7.32258064516129) internal successors, (227), 31 states have internal predecessors, (227), 0 states have call successors, (0), 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 13:27:24,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:27:24,941 INFO L93 Difference]: Finished difference Result 11132 states and 14810 transitions. [2023-12-20 13:27:24,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-12-20 13:27:24,941 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 7.32258064516129) internal successors, (227), 31 states have internal predecessors, (227), 0 states have call successors, (0), 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 83 [2023-12-20 13:27:24,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:27:24,948 INFO L225 Difference]: With dead ends: 11132 [2023-12-20 13:27:24,948 INFO L226 Difference]: Without dead ends: 9351 [2023-12-20 13:27:24,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1023 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=911, Invalid=3781, Unknown=0, NotChecked=0, Total=4692 [2023-12-20 13:27:24,951 INFO L413 NwaCegarLoop]: 1498 mSDtfsCounter, 20841 mSDsluCounter, 6504 mSDsCounter, 0 mSdLazyCounter, 947 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20841 SdHoareTripleChecker+Valid, 8002 SdHoareTripleChecker+Invalid, 1022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 947 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-20 13:27:24,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20841 Valid, 8002 Invalid, 1022 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 947 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-20 13:27:24,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9351 states. [2023-12-20 13:27:25,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9351 to 8777. [2023-12-20 13:27:25,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8777 states, 8775 states have (on average 1.3457549857549858) internal successors, (11809), 8776 states have internal predecessors, (11809), 0 states have call successors, (0), 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 13:27:25,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8777 states to 8777 states and 11809 transitions. [2023-12-20 13:27:25,234 INFO L78 Accepts]: Start accepts. Automaton has 8777 states and 11809 transitions. Word has length 83 [2023-12-20 13:27:25,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:27:25,234 INFO L495 AbstractCegarLoop]: Abstraction has 8777 states and 11809 transitions. [2023-12-20 13:27:25,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 7.32258064516129) internal successors, (227), 31 states have internal predecessors, (227), 0 states have call successors, (0), 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 13:27:25,235 INFO L276 IsEmpty]: Start isEmpty. Operand 8777 states and 11809 transitions. [2023-12-20 13:27:25,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-20 13:27:25,236 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:27:25,236 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, 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 13:27:25,250 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 13:27:25,442 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,SelfDestructingSolverStorable23 [2023-12-20 13:27:25,443 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:27:25,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:27:25,443 INFO L85 PathProgramCache]: Analyzing trace with hash 577648048, now seen corresponding path program 1 times [2023-12-20 13:27:25,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:27:25,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276808130] [2023-12-20 13:27:25,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:27:25,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:27:25,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:27:25,850 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:27:25,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:27:25,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276808130] [2023-12-20 13:27:25,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276808130] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:27:25,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974629652] [2023-12-20 13:27:25,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:27:25,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:27:25,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:27:25,852 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 13:27:25,856 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 13:27:25,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:27:25,974 INFO L262 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 13:27:25,977 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:27:26,591 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:27:26,592 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:27:27,394 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:27:27,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974629652] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:27:27,394 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:27:27,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 28 [2023-12-20 13:27:27,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81968328] [2023-12-20 13:27:27,395 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:27:27,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-20 13:27:27,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:27:27,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-20 13:27:27,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=619, Unknown=0, NotChecked=0, Total=756 [2023-12-20 13:27:27,396 INFO L87 Difference]: Start difference. First operand 8777 states and 11809 transitions. Second operand has 28 states, 28 states have (on average 7.714285714285714) internal successors, (216), 28 states have internal predecessors, (216), 0 states have call successors, (0), 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 13:27:28,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:27:28,232 INFO L93 Difference]: Finished difference Result 16301 states and 21463 transitions. [2023-12-20 13:27:28,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-20 13:27:28,232 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 7.714285714285714) internal successors, (216), 28 states have internal predecessors, (216), 0 states have call successors, (0), 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 83 [2023-12-20 13:27:28,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:27:28,241 INFO L225 Difference]: With dead ends: 16301 [2023-12-20 13:27:28,241 INFO L226 Difference]: Without dead ends: 9517 [2023-12-20 13:27:28,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=448, Invalid=1444, Unknown=0, NotChecked=0, Total=1892 [2023-12-20 13:27:28,247 INFO L413 NwaCegarLoop]: 1510 mSDtfsCounter, 9188 mSDsluCounter, 6334 mSDsCounter, 0 mSdLazyCounter, 573 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9188 SdHoareTripleChecker+Valid, 7844 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 13:27:28,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9188 Valid, 7844 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 573 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 13:27:28,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9517 states. [2023-12-20 13:27:28,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9517 to 8633. [2023-12-20 13:27:28,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8633 states, 8631 states have (on average 1.3364615919360445) internal successors, (11535), 8632 states have internal predecessors, (11535), 0 states have call successors, (0), 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 13:27:28,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8633 states to 8633 states and 11535 transitions. [2023-12-20 13:27:28,529 INFO L78 Accepts]: Start accepts. Automaton has 8633 states and 11535 transitions. Word has length 83 [2023-12-20 13:27:28,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:27:28,529 INFO L495 AbstractCegarLoop]: Abstraction has 8633 states and 11535 transitions. [2023-12-20 13:27:28,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 7.714285714285714) internal successors, (216), 28 states have internal predecessors, (216), 0 states have call successors, (0), 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 13:27:28,529 INFO L276 IsEmpty]: Start isEmpty. Operand 8633 states and 11535 transitions. [2023-12-20 13:27:28,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-20 13:27:28,530 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:27:28,531 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, 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 13:27:28,539 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 13:27:28,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:27:28,737 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:27:28,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:27:28,737 INFO L85 PathProgramCache]: Analyzing trace with hash -900611408, now seen corresponding path program 1 times [2023-12-20 13:27:28,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:27:28,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884156906] [2023-12-20 13:27:28,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:27:28,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:27:28,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:27:29,082 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:27:29,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:27:29,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884156906] [2023-12-20 13:27:29,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884156906] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:27:29,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256594164] [2023-12-20 13:27:29,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:27:29,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:27:29,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:27:29,084 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 13:27:29,087 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 13:27:29,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:27:29,199 INFO L262 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 13:27:29,209 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:27:29,773 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:27:29,773 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:27:30,491 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:27:30,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1256594164] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:27:30,492 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:27:30,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 28 [2023-12-20 13:27:30,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919196077] [2023-12-20 13:27:30,492 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:27:30,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-20 13:27:30,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:27:30,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-20 13:27:30,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=604, Unknown=0, NotChecked=0, Total=756 [2023-12-20 13:27:30,493 INFO L87 Difference]: Start difference. First operand 8633 states and 11535 transitions. Second operand has 28 states, 28 states have (on average 7.285714285714286) internal successors, (204), 28 states have internal predecessors, (204), 0 states have call successors, (0), 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 13:27:31,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:27:31,447 INFO L93 Difference]: Finished difference Result 16898 states and 22078 transitions. [2023-12-20 13:27:31,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-20 13:27:31,448 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 7.285714285714286) internal successors, (204), 28 states have internal predecessors, (204), 0 states have call successors, (0), 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 83 [2023-12-20 13:27:31,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:27:31,460 INFO L225 Difference]: With dead ends: 16898 [2023-12-20 13:27:31,460 INFO L226 Difference]: Without dead ends: 10953 [2023-12-20 13:27:31,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=449, Invalid=1357, Unknown=0, NotChecked=0, Total=1806 [2023-12-20 13:27:31,467 INFO L413 NwaCegarLoop]: 1529 mSDtfsCounter, 11876 mSDsluCounter, 6541 mSDsCounter, 0 mSdLazyCounter, 714 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11876 SdHoareTripleChecker+Valid, 8070 SdHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 13:27:31,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11876 Valid, 8070 Invalid, 737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 714 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 13:27:31,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10953 states. [2023-12-20 13:27:31,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10953 to 10435. [2023-12-20 13:27:31,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10435 states, 10433 states have (on average 1.3231093645164382) internal successors, (13804), 10434 states have internal predecessors, (13804), 0 states have call successors, (0), 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 13:27:31,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10435 states to 10435 states and 13804 transitions. [2023-12-20 13:27:31,753 INFO L78 Accepts]: Start accepts. Automaton has 10435 states and 13804 transitions. Word has length 83 [2023-12-20 13:27:31,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:27:31,754 INFO L495 AbstractCegarLoop]: Abstraction has 10435 states and 13804 transitions. [2023-12-20 13:27:31,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 7.285714285714286) internal successors, (204), 28 states have internal predecessors, (204), 0 states have call successors, (0), 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 13:27:31,754 INFO L276 IsEmpty]: Start isEmpty. Operand 10435 states and 13804 transitions. [2023-12-20 13:27:31,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-20 13:27:31,755 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:27:31,755 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, 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 13:27:31,766 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-20 13:27:31,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-20 13:27:31,964 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:27:31,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:27:31,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1230460860, now seen corresponding path program 1 times [2023-12-20 13:27:31,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:27:31,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063846026] [2023-12-20 13:27:31,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:27:31,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:27:31,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:27:32,341 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:27:32,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:27:32,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063846026] [2023-12-20 13:27:32,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063846026] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:27:32,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638015688] [2023-12-20 13:27:32,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:27:32,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:27:32,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:27:32,343 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 13:27:32,347 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 13:27:32,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:27:32,460 INFO L262 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 13:27:32,464 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:27:33,026 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:27:33,026 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:27:33,901 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:27:33,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638015688] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:27:33,902 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:27:33,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 31 [2023-12-20 13:27:33,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86410384] [2023-12-20 13:27:33,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:27:33,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-20 13:27:33,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:27:33,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-20 13:27:33,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=784, Unknown=0, NotChecked=0, Total=930 [2023-12-20 13:27:33,904 INFO L87 Difference]: Start difference. First operand 10435 states and 13804 transitions. Second operand has 31 states, 31 states have (on average 7.612903225806452) 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 13:27:36,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:27:36,568 INFO L93 Difference]: Finished difference Result 35341 states and 45425 transitions. [2023-12-20 13:27:36,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-12-20 13:27:36,568 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 7.612903225806452) 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 84 [2023-12-20 13:27:36,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:27:36,591 INFO L225 Difference]: With dead ends: 35341 [2023-12-20 13:27:36,591 INFO L226 Difference]: Without dead ends: 26850 [2023-12-20 13:27:36,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 982 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=937, Invalid=3485, Unknown=0, NotChecked=0, Total=4422 [2023-12-20 13:27:36,598 INFO L413 NwaCegarLoop]: 1506 mSDtfsCounter, 22070 mSDsluCounter, 8060 mSDsCounter, 0 mSdLazyCounter, 1015 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22070 SdHoareTripleChecker+Valid, 9566 SdHoareTripleChecker+Invalid, 1057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 13:27:36,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22070 Valid, 9566 Invalid, 1057 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1015 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 13:27:36,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26850 states. [2023-12-20 13:27:37,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26850 to 25602. [2023-12-20 13:27:37,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25602 states, 25600 states have (on average 1.2727734375) internal successors, (32583), 25601 states have internal predecessors, (32583), 0 states have call successors, (0), 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 13:27:37,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25602 states to 25602 states and 32583 transitions. [2023-12-20 13:27:37,396 INFO L78 Accepts]: Start accepts. Automaton has 25602 states and 32583 transitions. Word has length 84 [2023-12-20 13:27:37,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:27:37,396 INFO L495 AbstractCegarLoop]: Abstraction has 25602 states and 32583 transitions. [2023-12-20 13:27:37,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 7.612903225806452) 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 13:27:37,397 INFO L276 IsEmpty]: Start isEmpty. Operand 25602 states and 32583 transitions. [2023-12-20 13:27:37,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-20 13:27:37,400 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:27:37,400 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, 1, 1, 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 13:27:37,406 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-20 13:27:37,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-20 13:27:37,606 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:27:37,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:27:37,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1688504568, now seen corresponding path program 1 times [2023-12-20 13:27:37,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:27:37,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408792705] [2023-12-20 13:27:37,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:27:37,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:27:37,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:27:40,305 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:27:40,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:27:40,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408792705] [2023-12-20 13:27:40,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408792705] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:27:40,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012852353] [2023-12-20 13:27:40,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:27:40,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:27:40,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:27:40,308 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 13:27:40,312 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 13:27:40,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:27:40,422 INFO L262 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-20 13:27:40,424 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:27:41,659 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:27:41,659 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:27:42,387 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:27:42,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2012852353] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:27:42,387 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:27:42,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 11, 11] total 50 [2023-12-20 13:27:42,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785631969] [2023-12-20 13:27:42,387 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:27:42,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-12-20 13:27:42,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:27:42,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-12-20 13:27:42,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=2277, Unknown=0, NotChecked=0, Total=2450 [2023-12-20 13:27:42,390 INFO L87 Difference]: Start difference. First operand 25602 states and 32583 transitions. Second operand has 50 states, 50 states have (on average 4.68) internal successors, (234), 50 states have internal predecessors, (234), 0 states have call successors, (0), 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 13:28:20,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:28:20,545 INFO L93 Difference]: Finished difference Result 44760 states and 56008 transitions. [2023-12-20 13:28:20,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 238 states. [2023-12-20 13:28:20,546 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 4.68) internal successors, (234), 50 states have internal predecessors, (234), 0 states have call successors, (0), 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 86 [2023-12-20 13:28:20,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:28:20,575 INFO L225 Difference]: With dead ends: 44760 [2023-12-20 13:28:20,575 INFO L226 Difference]: Without dead ends: 35813 [2023-12-20 13:28:20,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 283 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31644 ImplicationChecksByTransitivity, 32.6s TimeCoverageRelationStatistics Valid=12521, Invalid=68419, Unknown=0, NotChecked=0, Total=80940 [2023-12-20 13:28:20,589 INFO L413 NwaCegarLoop]: 1713 mSDtfsCounter, 26146 mSDsluCounter, 35495 mSDsCounter, 0 mSdLazyCounter, 9179 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26146 SdHoareTripleChecker+Valid, 37208 SdHoareTripleChecker+Invalid, 9358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 9179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2023-12-20 13:28:20,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26146 Valid, 37208 Invalid, 9358 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [179 Valid, 9179 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2023-12-20 13:28:20,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35813 states. [2023-12-20 13:28:21,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35813 to 24939. [2023-12-20 13:28:21,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24939 states, 24937 states have (on average 1.2696795925732847) internal successors, (31662), 24938 states have internal predecessors, (31662), 0 states have call successors, (0), 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 13:28:21,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24939 states to 24939 states and 31662 transitions. [2023-12-20 13:28:21,708 INFO L78 Accepts]: Start accepts. Automaton has 24939 states and 31662 transitions. Word has length 86 [2023-12-20 13:28:21,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:28:21,708 INFO L495 AbstractCegarLoop]: Abstraction has 24939 states and 31662 transitions. [2023-12-20 13:28:21,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 4.68) internal successors, (234), 50 states have internal predecessors, (234), 0 states have call successors, (0), 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 13:28:21,708 INFO L276 IsEmpty]: Start isEmpty. Operand 24939 states and 31662 transitions. [2023-12-20 13:28:21,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-20 13:28:21,710 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:28:21,710 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, 1, 1, 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 13:28:21,722 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 13:28:21,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-20 13:28:21,921 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:28:21,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:28:21,921 INFO L85 PathProgramCache]: Analyzing trace with hash 301365880, now seen corresponding path program 1 times [2023-12-20 13:28:21,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:28:21,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869952071] [2023-12-20 13:28:21,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:28:21,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:28:21,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:28:22,586 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:28:22,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:28:22,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869952071] [2023-12-20 13:28:22,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869952071] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:28:22,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049557645] [2023-12-20 13:28:22,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:28:22,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:28:22,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:28:22,588 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 13:28:22,592 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 13:28:22,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:28:22,726 INFO L262 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 39 conjunts are in the unsatisfiable core [2023-12-20 13:28:22,729 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:28:25,547 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:28:25,548 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:28:28,232 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:28:28,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049557645] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:28:28,233 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:28:28,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 20, 23] total 53 [2023-12-20 13:28:28,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494847264] [2023-12-20 13:28:28,233 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:28:28,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-12-20 13:28:28,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:28:28,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-12-20 13:28:28,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=332, Invalid=2424, Unknown=0, NotChecked=0, Total=2756 [2023-12-20 13:28:28,234 INFO L87 Difference]: Start difference. First operand 24939 states and 31662 transitions. Second operand has 53 states, 53 states have (on average 4.226415094339623) internal successors, (224), 53 states have internal predecessors, (224), 0 states have call successors, (0), 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 13:29:39,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:29:39,830 INFO L93 Difference]: Finished difference Result 127417 states and 159249 transitions. [2023-12-20 13:29:39,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 299 states. [2023-12-20 13:29:39,831 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 4.226415094339623) internal successors, (224), 53 states have internal predecessors, (224), 0 states have call successors, (0), 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 86 [2023-12-20 13:29:39,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:29:39,946 INFO L225 Difference]: With dead ends: 127417 [2023-12-20 13:29:39,947 INFO L226 Difference]: Without dead ends: 115214 [2023-12-20 13:29:39,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 348 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53519 ImplicationChecksByTransitivity, 64.3s TimeCoverageRelationStatistics Valid=19156, Invalid=102994, Unknown=0, NotChecked=0, Total=122150 [2023-12-20 13:29:39,969 INFO L413 NwaCegarLoop]: 1579 mSDtfsCounter, 23197 mSDsluCounter, 28125 mSDsCounter, 0 mSdLazyCounter, 5084 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23197 SdHoareTripleChecker+Valid, 29704 SdHoareTripleChecker+Invalid, 5266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 5084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-12-20 13:29:39,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23197 Valid, 29704 Invalid, 5266 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [182 Valid, 5084 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-12-20 13:29:40,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115214 states. [2023-12-20 13:29:41,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115214 to 25820. [2023-12-20 13:29:41,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25820 states, 25818 states have (on average 1.2674877992098537) internal successors, (32724), 25819 states have internal predecessors, (32724), 0 states have call successors, (0), 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 13:29:41,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25820 states to 25820 states and 32724 transitions. [2023-12-20 13:29:41,628 INFO L78 Accepts]: Start accepts. Automaton has 25820 states and 32724 transitions. Word has length 86 [2023-12-20 13:29:41,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:29:41,629 INFO L495 AbstractCegarLoop]: Abstraction has 25820 states and 32724 transitions. [2023-12-20 13:29:41,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 4.226415094339623) internal successors, (224), 53 states have internal predecessors, (224), 0 states have call successors, (0), 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 13:29:41,629 INFO L276 IsEmpty]: Start isEmpty. Operand 25820 states and 32724 transitions. [2023-12-20 13:29:41,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-20 13:29:41,630 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:29:41,630 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, 1, 1, 1, 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 13:29:41,639 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 13:29:41,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:29:41,840 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:29:41,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:29:41,840 INFO L85 PathProgramCache]: Analyzing trace with hash -537853704, now seen corresponding path program 1 times [2023-12-20 13:29:41,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:29:41,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582284044] [2023-12-20 13:29:41,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:29:41,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:29:41,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:29:42,430 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:29:42,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:29:42,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582284044] [2023-12-20 13:29:42,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582284044] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:29:42,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437452052] [2023-12-20 13:29:42,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:29:42,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:29:42,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:29:42,432 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 13:29:42,434 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 13:29:42,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:29:42,561 INFO L262 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-20 13:29:42,563 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:29:43,380 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:29:43,380 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:29:44,247 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:29:44,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [437452052] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:29:44,247 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:29:44,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 15] total 35 [2023-12-20 13:29:44,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813619739] [2023-12-20 13:29:44,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:29:44,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-20 13:29:44,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:29:44,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-20 13:29:44,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=1037, Unknown=0, NotChecked=0, Total=1190 [2023-12-20 13:29:44,249 INFO L87 Difference]: Start difference. First operand 25820 states and 32724 transitions. Second operand has 35 states, 35 states have (on average 7.0285714285714285) internal successors, (246), 35 states have internal predecessors, (246), 0 states have call successors, (0), 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 13:29:50,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:29:50,369 INFO L93 Difference]: Finished difference Result 43752 states and 55117 transitions. [2023-12-20 13:29:50,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-12-20 13:29:50,369 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 7.0285714285714285) internal successors, (246), 35 states have internal predecessors, (246), 0 states have call successors, (0), 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 87 [2023-12-20 13:29:50,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:29:50,390 INFO L225 Difference]: With dead ends: 43752 [2023-12-20 13:29:50,390 INFO L226 Difference]: Without dead ends: 28014 [2023-12-20 13:29:50,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1851 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=1873, Invalid=6137, Unknown=0, NotChecked=0, Total=8010 [2023-12-20 13:29:50,398 INFO L413 NwaCegarLoop]: 1534 mSDtfsCounter, 9044 mSDsluCounter, 24538 mSDsCounter, 0 mSdLazyCounter, 1571 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9044 SdHoareTripleChecker+Valid, 26072 SdHoareTripleChecker+Invalid, 1620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-20 13:29:50,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9044 Valid, 26072 Invalid, 1620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1571 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-20 13:29:50,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28014 states. [2023-12-20 13:29:51,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28014 to 26865. [2023-12-20 13:29:51,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26865 states, 26863 states have (on average 1.2648624502103265) internal successors, (33978), 26864 states have internal predecessors, (33978), 0 states have call successors, (0), 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 13:29:51,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26865 states to 26865 states and 33978 transitions. [2023-12-20 13:29:51,838 INFO L78 Accepts]: Start accepts. Automaton has 26865 states and 33978 transitions. Word has length 87 [2023-12-20 13:29:51,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:29:51,839 INFO L495 AbstractCegarLoop]: Abstraction has 26865 states and 33978 transitions. [2023-12-20 13:29:51,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 7.0285714285714285) internal successors, (246), 35 states have internal predecessors, (246), 0 states have call successors, (0), 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 13:29:51,839 INFO L276 IsEmpty]: Start isEmpty. Operand 26865 states and 33978 transitions. [2023-12-20 13:29:51,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-20 13:29:51,844 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:29:51,844 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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, 1, 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 13:29:51,858 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 13:29:52,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:29:52,059 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:29:52,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:29:52,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1948015120, now seen corresponding path program 1 times [2023-12-20 13:29:52,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:29:52,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395579928] [2023-12-20 13:29:52,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:29:52,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:29:52,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:29:52,971 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 30 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:29:52,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:29:52,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395579928] [2023-12-20 13:29:52,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395579928] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:29:52,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796111034] [2023-12-20 13:29:52,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:29:52,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:29:52,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:29:52,976 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 13:29:52,996 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 13:29:53,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:29:53,137 INFO L262 TraceCheckSpWp]: Trace formula consists of 608 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-20 13:29:53,140 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:29:54,074 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 26 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:29:54,075 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:29:55,609 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 22 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:29:55,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796111034] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:29:55,609 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:29:55,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 11] total 35 [2023-12-20 13:29:55,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016892785] [2023-12-20 13:29:55,609 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:29:55,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-20 13:29:55,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:29:55,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-20 13:29:55,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=1135, Unknown=0, NotChecked=0, Total=1260 [2023-12-20 13:29:55,611 INFO L87 Difference]: Start difference. First operand 26865 states and 33978 transitions. Second operand has 36 states, 36 states have (on average 10.472222222222221) internal successors, (377), 35 states have internal predecessors, (377), 0 states have call successors, (0), 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 13:30:01,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:30:01,666 INFO L93 Difference]: Finished difference Result 46023 states and 57845 transitions. [2023-12-20 13:30:01,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2023-12-20 13:30:01,667 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 10.472222222222221) internal successors, (377), 35 states have internal predecessors, (377), 0 states have call successors, (0), 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 134 [2023-12-20 13:30:01,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:30:01,690 INFO L225 Difference]: With dead ends: 46023 [2023-12-20 13:30:01,691 INFO L226 Difference]: Without dead ends: 28429 [2023-12-20 13:30:01,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2111 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=1644, Invalid=7668, Unknown=0, NotChecked=0, Total=9312 [2023-12-20 13:30:01,698 INFO L413 NwaCegarLoop]: 1509 mSDtfsCounter, 28636 mSDsluCounter, 15554 mSDsCounter, 0 mSdLazyCounter, 1822 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28636 SdHoareTripleChecker+Valid, 17063 SdHoareTripleChecker+Invalid, 1900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1822 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-20 13:30:01,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28636 Valid, 17063 Invalid, 1900 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1822 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-20 13:30:01,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28429 states. [2023-12-20 13:30:03,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28429 to 26865. [2023-12-20 13:30:03,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26865 states, 26863 states have (on average 1.2527267989427837) internal successors, (33652), 26864 states have internal predecessors, (33652), 0 states have call successors, (0), 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 13:30:03,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26865 states to 26865 states and 33652 transitions. [2023-12-20 13:30:03,173 INFO L78 Accepts]: Start accepts. Automaton has 26865 states and 33652 transitions. Word has length 134 [2023-12-20 13:30:03,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:30:03,174 INFO L495 AbstractCegarLoop]: Abstraction has 26865 states and 33652 transitions. [2023-12-20 13:30:03,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 10.472222222222221) internal successors, (377), 35 states have internal predecessors, (377), 0 states have call successors, (0), 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 13:30:03,174 INFO L276 IsEmpty]: Start isEmpty. Operand 26865 states and 33652 transitions. [2023-12-20 13:30:03,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-20 13:30:03,180 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:30:03,181 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:30:03,188 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 13:30:03,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:30:03,389 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:30:03,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:30:03,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1363002568, now seen corresponding path program 1 times [2023-12-20 13:30:03,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:30:03,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035037890] [2023-12-20 13:30:03,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:30:03,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:30:03,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:30:04,084 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 40 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:30:04,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:30:04,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035037890] [2023-12-20 13:30:04,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035037890] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:30:04,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996478661] [2023-12-20 13:30:04,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:30:04,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:30:04,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:30:04,086 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 13:30:04,114 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 13:30:04,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:30:04,242 INFO L262 TraceCheckSpWp]: Trace formula consists of 610 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 13:30:04,245 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:30:04,846 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 42 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:30:04,847 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:30:06,850 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 40 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:30:06,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [996478661] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:30:06,850 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:30:06,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 26 [2023-12-20 13:30:06,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115800537] [2023-12-20 13:30:06,850 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:30:06,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-20 13:30:06,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:30:06,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-20 13:30:06,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=603, Unknown=0, NotChecked=0, Total=702 [2023-12-20 13:30:06,852 INFO L87 Difference]: Start difference. First operand 26865 states and 33652 transitions. Second operand has 27 states, 27 states have (on average 10.444444444444445) internal successors, (282), 26 states have internal predecessors, (282), 0 states have call successors, (0), 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 13:30:10,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:30:10,330 INFO L93 Difference]: Finished difference Result 88611 states and 110142 transitions. [2023-12-20 13:30:10,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-20 13:30:10,330 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 10.444444444444445) internal successors, (282), 26 states have internal predecessors, (282), 0 states have call successors, (0), 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 135 [2023-12-20 13:30:10,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:30:10,387 INFO L225 Difference]: With dead ends: 88611 [2023-12-20 13:30:10,387 INFO L226 Difference]: Without dead ends: 64993 [2023-12-20 13:30:10,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 254 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 414 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=505, Invalid=1751, Unknown=0, NotChecked=0, Total=2256 [2023-12-20 13:30:10,399 INFO L413 NwaCegarLoop]: 1536 mSDtfsCounter, 10611 mSDsluCounter, 12361 mSDsCounter, 0 mSdLazyCounter, 773 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10611 SdHoareTripleChecker+Valid, 13897 SdHoareTripleChecker+Invalid, 791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 13:30:10,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10611 Valid, 13897 Invalid, 791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 773 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 13:30:10,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64993 states. [2023-12-20 13:30:13,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64993 to 54277. [2023-12-20 13:30:13,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54277 states, 54275 states have (on average 1.2322800552740671) internal successors, (66882), 54276 states have internal predecessors, (66882), 0 states have call successors, (0), 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 13:30:13,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54277 states to 54277 states and 66882 transitions. [2023-12-20 13:30:13,781 INFO L78 Accepts]: Start accepts. Automaton has 54277 states and 66882 transitions. Word has length 135 [2023-12-20 13:30:13,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:30:13,782 INFO L495 AbstractCegarLoop]: Abstraction has 54277 states and 66882 transitions. [2023-12-20 13:30:13,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 10.444444444444445) internal successors, (282), 26 states have internal predecessors, (282), 0 states have call successors, (0), 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 13:30:13,782 INFO L276 IsEmpty]: Start isEmpty. Operand 54277 states and 66882 transitions. [2023-12-20 13:30:13,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-20 13:30:13,794 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:30:13,794 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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, 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 13:30:13,800 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 13:30:14,000 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,SelfDestructingSolverStorable31 [2023-12-20 13:30:14,000 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:30:14,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:30:14,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1491251620, now seen corresponding path program 1 times [2023-12-20 13:30:14,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:30:14,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614254183] [2023-12-20 13:30:14,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:30:14,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:30:14,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:30:14,949 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 31 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:30:14,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:30:14,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614254183] [2023-12-20 13:30:14,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614254183] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:30:14,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757789601] [2023-12-20 13:30:14,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:30:14,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:30:14,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:30:14,951 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 13:30:14,972 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 13:30:15,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:30:15,114 INFO L262 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-20 13:30:15,116 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:30:17,250 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 13 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:30:17,251 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:30:20,624 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 13 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:30:20,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [757789601] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:30:20,624 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:30:20,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 18] total 53 [2023-12-20 13:30:20,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331936991] [2023-12-20 13:30:20,624 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:30:20,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-12-20 13:30:20,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:30:20,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-12-20 13:30:20,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=2543, Unknown=0, NotChecked=0, Total=2756 [2023-12-20 13:30:20,626 INFO L87 Difference]: Start difference. First operand 54277 states and 66882 transitions. Second operand has 53 states, 53 states have (on average 7.433962264150943) internal successors, (394), 53 states have internal predecessors, (394), 0 states have call successors, (0), 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 13:31:44,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:31:44,274 INFO L93 Difference]: Finished difference Result 158741 states and 191190 transitions. [2023-12-20 13:31:44,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 364 states. [2023-12-20 13:31:44,275 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 7.433962264150943) internal successors, (394), 53 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2023-12-20 13:31:44,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:31:44,415 INFO L225 Difference]: With dead ends: 158741 [2023-12-20 13:31:44,416 INFO L226 Difference]: Without dead ends: 137741 [2023-12-20 13:31:44,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 651 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 412 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70525 ImplicationChecksByTransitivity, 66.4s TimeCoverageRelationStatistics Valid=17382, Invalid=153600, Unknown=0, NotChecked=0, Total=170982 [2023-12-20 13:31:44,443 INFO L413 NwaCegarLoop]: 1707 mSDtfsCounter, 22288 mSDsluCounter, 39625 mSDsCounter, 0 mSdLazyCounter, 9432 mSolverCounterSat, 423 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22288 SdHoareTripleChecker+Valid, 41332 SdHoareTripleChecker+Invalid, 9855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 423 IncrementalHoareTripleChecker+Valid, 9432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2023-12-20 13:31:44,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22288 Valid, 41332 Invalid, 9855 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [423 Valid, 9432 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2023-12-20 13:31:44,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137741 states. [2023-12-20 13:31:50,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137741 to 79265. [2023-12-20 13:31:50,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79265 states, 79263 states have (on average 1.2220582112713372) internal successors, (96864), 79264 states have internal predecessors, (96864), 0 states have call successors, (0), 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 13:31:50,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79265 states to 79265 states and 96864 transitions. [2023-12-20 13:31:50,542 INFO L78 Accepts]: Start accepts. Automaton has 79265 states and 96864 transitions. Word has length 136 [2023-12-20 13:31:50,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:31:50,542 INFO L495 AbstractCegarLoop]: Abstraction has 79265 states and 96864 transitions. [2023-12-20 13:31:50,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 7.433962264150943) internal successors, (394), 53 states have internal predecessors, (394), 0 states have call successors, (0), 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 13:31:50,542 INFO L276 IsEmpty]: Start isEmpty. Operand 79265 states and 96864 transitions. [2023-12-20 13:31:50,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-20 13:31:50,551 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:31:50,551 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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, 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 13:31:50,556 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-12-20 13:31:50,751 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,SelfDestructingSolverStorable32 [2023-12-20 13:31:50,752 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:31:50,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:31:50,753 INFO L85 PathProgramCache]: Analyzing trace with hash 104112932, now seen corresponding path program 1 times [2023-12-20 13:31:50,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:31:50,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687935868] [2023-12-20 13:31:50,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:31:50,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:31:50,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:31:51,378 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 49 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:31:51,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:31:51,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687935868] [2023-12-20 13:31:51,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687935868] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:31:51,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267792591] [2023-12-20 13:31:51,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:31:51,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:31:51,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:31:51,380 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 13:31:51,382 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 13:31:51,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:31:51,535 INFO L262 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-20 13:31:51,537 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:31:52,222 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 57 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:31:52,222 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:31:53,856 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 49 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:31:53,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [267792591] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:31:53,857 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:31:53,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 26 [2023-12-20 13:31:53,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181408213] [2023-12-20 13:31:53,857 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:31:53,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-20 13:31:53,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:31:53,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-20 13:31:53,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=602, Unknown=0, NotChecked=0, Total=702 [2023-12-20 13:31:53,858 INFO L87 Difference]: Start difference. First operand 79265 states and 96864 transitions. Second operand has 27 states, 27 states have (on average 10.407407407407407) internal successors, (281), 26 states have internal predecessors, (281), 0 states have call successors, (0), 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 13:31:59,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:31:59,372 INFO L93 Difference]: Finished difference Result 121021 states and 147641 transitions. [2023-12-20 13:31:59,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-20 13:31:59,373 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 10.407407407407407) internal successors, (281), 26 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2023-12-20 13:31:59,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:31:59,451 INFO L225 Difference]: With dead ends: 121021 [2023-12-20 13:31:59,451 INFO L226 Difference]: Without dead ends: 70349 [2023-12-20 13:31:59,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 257 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=352, Invalid=1288, Unknown=0, NotChecked=0, Total=1640 [2023-12-20 13:31:59,478 INFO L413 NwaCegarLoop]: 1531 mSDtfsCounter, 13416 mSDsluCounter, 10904 mSDsCounter, 0 mSdLazyCounter, 712 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13416 SdHoareTripleChecker+Valid, 12435 SdHoareTripleChecker+Invalid, 732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 13:31:59,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13416 Valid, 12435 Invalid, 732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 712 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 13:31:59,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70349 states. [2023-12-20 13:32:04,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70349 to 69273. [2023-12-20 13:32:04,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69273 states, 69271 states have (on average 1.2148518138903726) internal successors, (84154), 69272 states have internal predecessors, (84154), 0 states have call successors, (0), 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 13:32:04,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69273 states to 69273 states and 84154 transitions. [2023-12-20 13:32:04,806 INFO L78 Accepts]: Start accepts. Automaton has 69273 states and 84154 transitions. Word has length 136 [2023-12-20 13:32:04,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:32:04,806 INFO L495 AbstractCegarLoop]: Abstraction has 69273 states and 84154 transitions. [2023-12-20 13:32:04,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 10.407407407407407) internal successors, (281), 26 states have internal predecessors, (281), 0 states have call successors, (0), 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 13:32:04,807 INFO L276 IsEmpty]: Start isEmpty. Operand 69273 states and 84154 transitions. [2023-12-20 13:32:04,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-12-20 13:32:04,816 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:32:04,816 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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, 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 13:32:04,823 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 13:32:05,016 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,SelfDestructingSolverStorable33 [2023-12-20 13:32:05,017 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:32:05,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:32:05,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1091004872, now seen corresponding path program 1 times [2023-12-20 13:32:05,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:32:05,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017266047] [2023-12-20 13:32:05,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:32:05,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:32:05,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:32:07,468 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 13 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:32:07,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:32:07,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017266047] [2023-12-20 13:32:07,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017266047] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:32:07,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669357688] [2023-12-20 13:32:07,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:32:07,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:32:07,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:32:07,470 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 13:32:07,472 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 13:32:07,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:32:07,621 INFO L262 TraceCheckSpWp]: Trace formula consists of 614 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-20 13:32:07,623 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:32:09,622 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 22 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:32:09,622 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:32:13,327 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 22 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:32:13,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1669357688] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:32:13,328 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:32:13,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 20, 19] total 67 [2023-12-20 13:32:13,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034896697] [2023-12-20 13:32:13,328 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:32:13,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2023-12-20 13:32:13,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:32:13,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2023-12-20 13:32:13,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=4166, Unknown=0, NotChecked=0, Total=4422 [2023-12-20 13:32:13,330 INFO L87 Difference]: Start difference. First operand 69273 states and 84154 transitions. Second operand has 67 states, 67 states have (on average 5.880597014925373) internal successors, (394), 67 states have internal predecessors, (394), 0 states have call successors, (0), 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 13:35:04,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:35:04,326 INFO L93 Difference]: Finished difference Result 306452 states and 368507 transitions. [2023-12-20 13:35:04,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 530 states. [2023-12-20 13:35:04,326 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 5.880597014925373) internal successors, (394), 67 states have internal predecessors, (394), 0 states have call successors, (0), 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 137 [2023-12-20 13:35:04,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:35:04,757 INFO L225 Difference]: With dead ends: 306452 [2023-12-20 13:35:04,757 INFO L226 Difference]: Without dead ends: 265934 [2023-12-20 13:35:04,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 832 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 593 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151464 ImplicationChecksByTransitivity, 135.5s TimeCoverageRelationStatistics Valid=30998, Invalid=322432, Unknown=0, NotChecked=0, Total=353430 [2023-12-20 13:35:04,834 INFO L413 NwaCegarLoop]: 1627 mSDtfsCounter, 40963 mSDsluCounter, 55139 mSDsCounter, 0 mSdLazyCounter, 13753 mSolverCounterSat, 552 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40963 SdHoareTripleChecker+Valid, 56766 SdHoareTripleChecker+Invalid, 14305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 552 IncrementalHoareTripleChecker+Valid, 13753 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time [2023-12-20 13:35:04,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40963 Valid, 56766 Invalid, 14305 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [552 Valid, 13753 Invalid, 0 Unknown, 0 Unchecked, 12.8s Time] [2023-12-20 13:35:04,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265934 states. [2023-12-20 13:35:15,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265934 to 101160. [2023-12-20 13:35:15,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101160 states, 101158 states have (on average 1.2030684671503984) internal successors, (121700), 101159 states have internal predecessors, (121700), 0 states have call successors, (0), 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 13:35:15,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101160 states to 101160 states and 121700 transitions. [2023-12-20 13:35:15,288 INFO L78 Accepts]: Start accepts. Automaton has 101160 states and 121700 transitions. Word has length 137 [2023-12-20 13:35:15,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:35:15,289 INFO L495 AbstractCegarLoop]: Abstraction has 101160 states and 121700 transitions. [2023-12-20 13:35:15,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 5.880597014925373) internal successors, (394), 67 states have internal predecessors, (394), 0 states have call successors, (0), 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 13:35:15,289 INFO L276 IsEmpty]: Start isEmpty. Operand 101160 states and 121700 transitions. [2023-12-20 13:35:15,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-12-20 13:35:15,296 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:35:15,297 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:35:15,303 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-20 13:35:15,497 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,SelfDestructingSolverStorable34 [2023-12-20 13:35:15,497 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:35:15,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:35:15,498 INFO L85 PathProgramCache]: Analyzing trace with hash 240556418, now seen corresponding path program 1 times [2023-12-20 13:35:15,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:35:15,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856437302] [2023-12-20 13:35:15,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:35:15,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:35:15,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:35:15,683 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:35:15,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:35:15,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856437302] [2023-12-20 13:35:15,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856437302] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:35:15,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:35:15,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 13:35:15,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702758210] [2023-12-20 13:35:15,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:35:15,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 13:35:15,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:35:15,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 13:35:15,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 13:35:15,685 INFO L87 Difference]: Start difference. First operand 101160 states and 121700 transitions. Second operand has 5 states, 5 states have (on average 27.4) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 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 13:35:27,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:35:27,666 INFO L93 Difference]: Finished difference Result 103419 states and 125099 transitions. [2023-12-20 13:35:27,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 13:35:27,667 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 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 137 [2023-12-20 13:35:27,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:35:27,767 INFO L225 Difference]: With dead ends: 103419 [2023-12-20 13:35:27,767 INFO L226 Difference]: Without dead ends: 101915 [2023-12-20 13:35:27,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-20 13:35:27,784 INFO L413 NwaCegarLoop]: 788 mSDtfsCounter, 1467 mSDsluCounter, 1049 mSDsCounter, 0 mSdLazyCounter, 3937 mSolverCounterSat, 406 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1467 SdHoareTripleChecker+Valid, 1837 SdHoareTripleChecker+Invalid, 4343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 406 IncrementalHoareTripleChecker+Valid, 3937 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-20 13:35:27,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1467 Valid, 1837 Invalid, 4343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [406 Valid, 3937 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-20 13:35:27,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101915 states. [2023-12-20 13:35:37,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101915 to 101911. [2023-12-20 13:35:37,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101911 states, 101909 states have (on average 1.2016308667536724) internal successors, (122457), 101910 states have internal predecessors, (122457), 0 states have call successors, (0), 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 13:35:37,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101911 states to 101911 states and 122457 transitions. [2023-12-20 13:35:37,287 INFO L78 Accepts]: Start accepts. Automaton has 101911 states and 122457 transitions. Word has length 137 [2023-12-20 13:35:37,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:35:37,287 INFO L495 AbstractCegarLoop]: Abstraction has 101911 states and 122457 transitions. [2023-12-20 13:35:37,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 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 13:35:37,287 INFO L276 IsEmpty]: Start isEmpty. Operand 101911 states and 122457 transitions. [2023-12-20 13:35:37,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-20 13:35:37,295 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:35:37,296 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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, 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 13:35:37,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-12-20 13:35:37,296 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:35:37,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:35:37,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1695630128, now seen corresponding path program 1 times [2023-12-20 13:35:37,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:35:37,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35290994] [2023-12-20 13:35:37,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:35:37,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:35:37,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:35:39,706 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 31 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:35:39,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:35:39,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35290994] [2023-12-20 13:35:39,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35290994] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:35:39,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1720252344] [2023-12-20 13:35:39,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:35:39,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:35:39,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:35:39,708 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 13:35:39,709 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 13:35:39,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:35:39,841 INFO L262 TraceCheckSpWp]: Trace formula consists of 613 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-20 13:35:39,843 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:35:41,417 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 41 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:35:41,417 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:35:44,715 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 41 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:35:44,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1720252344] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:35:44,715 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:35:44,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 17, 18] total 64 [2023-12-20 13:35:44,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248871294] [2023-12-20 13:35:44,716 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:35:44,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2023-12-20 13:35:44,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:35:44,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2023-12-20 13:35:44,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=3808, Unknown=0, NotChecked=0, Total=4032 [2023-12-20 13:35:44,718 INFO L87 Difference]: Start difference. First operand 101911 states and 122457 transitions. Second operand has 64 states, 64 states have (on average 5.859375) internal successors, (375), 64 states have internal predecessors, (375), 0 states have call successors, (0), 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 13:36:44,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:36:44,247 INFO L93 Difference]: Finished difference Result 173060 states and 206175 transitions. [2023-12-20 13:36:44,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 181 states. [2023-12-20 13:36:44,248 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 5.859375) internal successors, (375), 64 states have internal predecessors, (375), 0 states have call successors, (0), 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 138 [2023-12-20 13:36:44,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:36:44,371 INFO L225 Difference]: With dead ends: 173060 [2023-12-20 13:36:44,371 INFO L226 Difference]: Without dead ends: 122983 [2023-12-20 13:36:44,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 241 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18340 ImplicationChecksByTransitivity, 44.3s TimeCoverageRelationStatistics Valid=7464, Invalid=51342, Unknown=0, NotChecked=0, Total=58806 [2023-12-20 13:36:44,407 INFO L413 NwaCegarLoop]: 1551 mSDtfsCounter, 36401 mSDsluCounter, 44394 mSDsCounter, 0 mSdLazyCounter, 7290 mSolverCounterSat, 242 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36401 SdHoareTripleChecker+Valid, 45945 SdHoareTripleChecker+Invalid, 7532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 242 IncrementalHoareTripleChecker+Valid, 7290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2023-12-20 13:36:44,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36401 Valid, 45945 Invalid, 7532 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [242 Valid, 7290 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2023-12-20 13:36:44,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122983 states. [2023-12-20 13:36:55,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122983 to 104781. [2023-12-20 13:36:55,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104781 states, 104779 states have (on average 1.2005936304030387) internal successors, (125797), 104780 states have internal predecessors, (125797), 0 states have call successors, (0), 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 13:36:55,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104781 states to 104781 states and 125797 transitions. [2023-12-20 13:36:55,760 INFO L78 Accepts]: Start accepts. Automaton has 104781 states and 125797 transitions. Word has length 138 [2023-12-20 13:36:55,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:36:55,760 INFO L495 AbstractCegarLoop]: Abstraction has 104781 states and 125797 transitions. [2023-12-20 13:36:55,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 5.859375) internal successors, (375), 64 states have internal predecessors, (375), 0 states have call successors, (0), 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 13:36:55,760 INFO L276 IsEmpty]: Start isEmpty. Operand 104781 states and 125797 transitions. [2023-12-20 13:36:55,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-20 13:36:55,769 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:36:55,769 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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, 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 13:36:55,774 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 13:36:55,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:36:55,970 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:36:55,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:36:55,971 INFO L85 PathProgramCache]: Analyzing trace with hash -2045930824, now seen corresponding path program 1 times [2023-12-20 13:36:55,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:36:55,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107672999] [2023-12-20 13:36:55,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:36:55,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:36:56,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:36:58,220 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 13 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:36:58,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:36:58,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107672999] [2023-12-20 13:36:58,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107672999] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:36:58,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941643640] [2023-12-20 13:36:58,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:36:58,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:36:58,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:36:58,222 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 13:36:58,223 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 13:36:58,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:36:58,362 INFO L262 TraceCheckSpWp]: Trace formula consists of 613 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-20 13:36:58,364 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:36:59,886 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 50 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:36:59,886 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:37:02,533 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 50 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:37:02,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [941643640] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:37:02,533 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:37:02,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 18, 17] total 62 [2023-12-20 13:37:02,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317771260] [2023-12-20 13:37:02,533 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:37:02,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2023-12-20 13:37:02,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:37:02,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2023-12-20 13:37:02,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=283, Invalid=3499, Unknown=0, NotChecked=0, Total=3782 [2023-12-20 13:37:02,535 INFO L87 Difference]: Start difference. First operand 104781 states and 125797 transitions. Second operand has 62 states, 62 states have (on average 6.145161290322581) internal successors, (381), 62 states have internal predecessors, (381), 0 states have call successors, (0), 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 13:38:41,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:38:41,175 INFO L93 Difference]: Finished difference Result 373397 states and 444662 transitions. [2023-12-20 13:38:41,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 241 states. [2023-12-20 13:38:41,176 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 6.145161290322581) internal successors, (381), 62 states have internal predecessors, (381), 0 states have call successors, (0), 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 138 [2023-12-20 13:38:41,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:38:41,719 INFO L225 Difference]: With dead ends: 373397 [2023-12-20 13:38:41,719 INFO L226 Difference]: Without dead ends: 311824 [2023-12-20 13:38:41,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 544 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 299 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31810 ImplicationChecksByTransitivity, 56.7s TimeCoverageRelationStatistics Valid=12121, Invalid=78179, Unknown=0, NotChecked=0, Total=90300 [2023-12-20 13:38:41,783 INFO L413 NwaCegarLoop]: 1624 mSDtfsCounter, 27000 mSDsluCounter, 50710 mSDsCounter, 0 mSdLazyCounter, 6370 mSolverCounterSat, 256 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27000 SdHoareTripleChecker+Valid, 52334 SdHoareTripleChecker+Invalid, 6626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 256 IncrementalHoareTripleChecker+Valid, 6370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-12-20 13:38:41,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27000 Valid, 52334 Invalid, 6626 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [256 Valid, 6370 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-12-20 13:38:41,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311824 states. [2023-12-20 13:39:12,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311824 to 233705. [2023-12-20 13:39:12,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233705 states, 233703 states have (on average 1.1956928237977262) internal successors, (279437), 233704 states have internal predecessors, (279437), 0 states have call successors, (0), 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 13:39:13,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233705 states to 233705 states and 279437 transitions. [2023-12-20 13:39:13,374 INFO L78 Accepts]: Start accepts. Automaton has 233705 states and 279437 transitions. Word has length 138 [2023-12-20 13:39:13,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:39:13,374 INFO L495 AbstractCegarLoop]: Abstraction has 233705 states and 279437 transitions. [2023-12-20 13:39:13,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 6.145161290322581) internal successors, (381), 62 states have internal predecessors, (381), 0 states have call successors, (0), 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 13:39:13,374 INFO L276 IsEmpty]: Start isEmpty. Operand 233705 states and 279437 transitions. [2023-12-20 13:39:13,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-20 13:39:13,383 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:39:13,383 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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, 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 13:39:13,388 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 13:39:13,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-12-20 13:39:13,584 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:39:13,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:39:13,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1884809344, now seen corresponding path program 1 times [2023-12-20 13:39:13,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:39:13,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406469566] [2023-12-20 13:39:13,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:39:13,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:39:13,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:39:14,586 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 41 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:39:14,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:39:14,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406469566] [2023-12-20 13:39:14,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406469566] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:39:14,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766728718] [2023-12-20 13:39:14,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:39:14,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:39:14,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:39:14,588 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 13:39:14,591 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 13:39:14,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:39:14,777 INFO L262 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-20 13:39:14,780 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:39:15,726 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 65 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:39:15,726 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:39:16,490 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 65 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:39:16,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [766728718] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:39:16,491 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:39:16,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 11] total 29 [2023-12-20 13:39:16,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626960266] [2023-12-20 13:39:16,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:39:16,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-20 13:39:16,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:39:16,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-20 13:39:16,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=720, Unknown=0, NotChecked=0, Total=812 [2023-12-20 13:39:16,492 INFO L87 Difference]: Start difference. First operand 233705 states and 279437 transitions. Second operand has 29 states, 29 states have (on average 11.551724137931034) internal successors, (335), 29 states have internal predecessors, (335), 0 states have call successors, (0), 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 13:39:55,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:39:55,958 INFO L93 Difference]: Finished difference Result 487612 states and 582517 transitions. [2023-12-20 13:39:55,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-12-20 13:39:55,959 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 11.551724137931034) internal successors, (335), 29 states have internal predecessors, (335), 0 states have call successors, (0), 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 138 [2023-12-20 13:39:55,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:39:56,475 INFO L225 Difference]: With dead ends: 487612 [2023-12-20 13:39:56,476 INFO L226 Difference]: Without dead ends: 262028 [2023-12-20 13:39:56,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 272 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1030 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=913, Invalid=3779, Unknown=0, NotChecked=0, Total=4692 [2023-12-20 13:39:56,605 INFO L413 NwaCegarLoop]: 1566 mSDtfsCounter, 21470 mSDsluCounter, 9943 mSDsCounter, 0 mSdLazyCounter, 1455 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21470 SdHoareTripleChecker+Valid, 11509 SdHoareTripleChecker+Invalid, 1501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-20 13:39:56,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21470 Valid, 11509 Invalid, 1501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1455 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-20 13:39:56,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262028 states. Received shutdown request... [2023-12-20 13:40:03,379 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-20 13:40:03,386 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 13:40:04,387 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-20 13:40:04,464 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Cannot interrupt operation gracefully because timeout expired. Forcing shutdown