/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.7.ufo.UNBOUNDED.pals+Problem12_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 14:35:17,675 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 14:35:17,741 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 14:35:17,744 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 14:35:17,744 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 14:35:17,769 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 14:35:17,769 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 14:35:17,769 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 14:35:17,770 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 14:35:17,773 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 14:35:17,773 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 14:35:17,773 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 14:35:17,774 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 14:35:17,775 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 14:35:17,775 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 14:35:17,775 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 14:35:17,775 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 14:35:17,775 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 14:35:17,776 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 14:35:17,776 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 14:35:17,776 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 14:35:17,777 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 14:35:17,777 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 14:35:17,777 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 14:35:17,777 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 14:35:17,777 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 14:35:17,777 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 14:35:17,777 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 14:35:17,778 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 14:35:17,778 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 14:35:17,779 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 14:35:17,779 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 14:35:17,779 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 14:35:17,779 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 14:35:17,779 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 14:35:17,779 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 14:35:17,779 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 14:35:17,779 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 14:35:17,779 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 14:35:17,780 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 14:35:17,780 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 14:35:17,780 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 14:35:17,780 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 14:35:17,780 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 14:35:17,937 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 14:35:17,950 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 14:35:17,951 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 14:35:17,952 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 14:35:17,952 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 14:35:17,953 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label05.c [2023-12-20 14:35:19,070 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 14:35:19,438 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 14:35:19,439 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label05.c [2023-12-20 14:35:19,471 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/202dcaf17/64f57e9b65784c878e673b4c5eedca60/FLAGb8c5f7584 [2023-12-20 14:35:19,486 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/202dcaf17/64f57e9b65784c878e673b4c5eedca60 [2023-12-20 14:35:19,488 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 14:35:19,489 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 14:35:19,490 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 14:35:19,491 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 14:35:19,494 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 14:35:19,495 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 02:35:19" (1/1) ... [2023-12-20 14:35:19,496 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52adeef9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:35:19, skipping insertion in model container [2023-12-20 14:35:19,496 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 02:35:19" (1/1) ... [2023-12-20 14:35:19,585 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 14:35:19,890 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.7.ufo.UNBOUNDED.pals+Problem12_label05.c[20454,20467] [2023-12-20 14:35:19,957 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.7.ufo.UNBOUNDED.pals+Problem12_label05.c[27390,27403] [2023-12-20 14:35:20,467 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 14:35:20,477 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 14:35:20,520 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.7.ufo.UNBOUNDED.pals+Problem12_label05.c[20454,20467] [2023-12-20 14:35:20,531 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.7.ufo.UNBOUNDED.pals+Problem12_label05.c[27390,27403] [2023-12-20 14:35:20,797 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 14:35:20,816 INFO L206 MainTranslator]: Completed translation [2023-12-20 14:35:20,816 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:35:20 WrapperNode [2023-12-20 14:35:20,816 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 14:35:20,817 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 14:35:20,817 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 14:35:20,818 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 14:35:20,822 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:35:20" (1/1) ... [2023-12-20 14:35:20,868 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:35:20" (1/1) ... [2023-12-20 14:35:21,179 INFO L138 Inliner]: procedures = 39, calls = 24, calls flagged for inlining = 19, calls inlined = 19, statements flattened = 5212 [2023-12-20 14:35:21,180 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 14:35:21,181 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 14:35:21,181 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 14:35:21,181 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 14:35:21,189 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:35:20" (1/1) ... [2023-12-20 14:35:21,189 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:35:20" (1/1) ... [2023-12-20 14:35:21,216 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:35:20" (1/1) ... [2023-12-20 14:35:21,374 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 14:35:21,374 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:35:20" (1/1) ... [2023-12-20 14:35:21,374 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:35:20" (1/1) ... [2023-12-20 14:35:21,484 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:35:20" (1/1) ... [2023-12-20 14:35:21,516 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:35:20" (1/1) ... [2023-12-20 14:35:21,547 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:35:20" (1/1) ... [2023-12-20 14:35:21,564 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:35:20" (1/1) ... [2023-12-20 14:35:21,611 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 14:35:21,612 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 14:35:21,613 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 14:35:21,613 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 14:35:21,613 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:35:20" (1/1) ... [2023-12-20 14:35:21,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 14:35:21,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:35:21,636 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-20 14:35:21,642 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 14:35:21,661 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 14:35:21,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 14:35:21,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 14:35:21,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 14:35:21,780 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 14:35:21,782 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 14:35:24,618 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 14:35:24,656 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 14:35:24,656 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-20 14:35:24,656 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 02:35:24 BoogieIcfgContainer [2023-12-20 14:35:24,656 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 14:35:24,658 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 14:35:24,658 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 14:35:24,660 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 14:35:24,660 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 02:35:19" (1/3) ... [2023-12-20 14:35:24,661 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58000f2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 02:35:24, skipping insertion in model container [2023-12-20 14:35:24,661 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:35:20" (2/3) ... [2023-12-20 14:35:24,661 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58000f2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 02:35:24, skipping insertion in model container [2023-12-20 14:35:24,661 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 02:35:24" (3/3) ... [2023-12-20 14:35:24,662 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label05.c [2023-12-20 14:35:24,673 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 14:35:24,674 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-20 14:35:24,741 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 14:35:24,745 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;@5adbe803, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 14:35:24,745 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-20 14:35:24,751 INFO L276 IsEmpty]: Start isEmpty. Operand has 867 states, 864 states have (on average 1.9710648148148149) internal successors, (1703), 866 states have internal predecessors, (1703), 0 states have call successors, (0), 0 states 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 14:35:24,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-20 14:35:24,757 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:35:24,757 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] [2023-12-20 14:35:24,758 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:35:24,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:35:24,761 INFO L85 PathProgramCache]: Analyzing trace with hash -2003734705, now seen corresponding path program 1 times [2023-12-20 14:35:24,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:35:24,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410668718] [2023-12-20 14:35:24,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:35:24,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:35:24,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:35:24,901 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 14:35:24,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:35:24,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410668718] [2023-12-20 14:35:24,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410668718] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:35:24,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:35:24,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 14:35:24,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201856369] [2023-12-20 14:35:24,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:35:24,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 14:35:24,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:35:24,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 14:35:24,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 14:35:24,926 INFO L87 Difference]: Start difference. First operand has 867 states, 864 states have (on average 1.9710648148148149) internal successors, (1703), 866 states have internal predecessors, (1703), 0 states have call successors, (0), 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 12.5) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states 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 14:35:24,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:35:24,987 INFO L93 Difference]: Finished difference Result 1679 states and 3299 transitions. [2023-12-20 14:35:24,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 14:35:24,989 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2023-12-20 14:35:24,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:35:25,017 INFO L225 Difference]: With dead ends: 1679 [2023-12-20 14:35:25,017 INFO L226 Difference]: Without dead ends: 863 [2023-12-20 14:35:25,022 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 14:35:25,024 INFO L413 NwaCegarLoop]: 1631 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1631 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:35:25,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1631 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:35:25,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2023-12-20 14:35:25,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 863. [2023-12-20 14:35:25,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 863 states, 861 states have (on average 1.8954703832752613) internal successors, (1632), 862 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states 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 14:35:25,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 863 states to 863 states and 1632 transitions. [2023-12-20 14:35:25,077 INFO L78 Accepts]: Start accepts. Automaton has 863 states and 1632 transitions. Word has length 25 [2023-12-20 14:35:25,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:35:25,078 INFO L495 AbstractCegarLoop]: Abstraction has 863 states and 1632 transitions. [2023-12-20 14:35:25,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states 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 14:35:25,078 INFO L276 IsEmpty]: Start isEmpty. Operand 863 states and 1632 transitions. [2023-12-20 14:35:25,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-20 14:35:25,079 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:35:25,079 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] [2023-12-20 14:35:25,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 14:35:25,079 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:35:25,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:35:25,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1581032879, now seen corresponding path program 1 times [2023-12-20 14:35:25,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:35:25,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441099788] [2023-12-20 14:35:25,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:35:25,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:35:25,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:35:25,306 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 14:35:25,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:35:25,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441099788] [2023-12-20 14:35:25,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441099788] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:35:25,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:35:25,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 14:35:25,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078601916] [2023-12-20 14:35:25,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:35:25,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 14:35:25,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:35:25,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 14:35:25,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 14:35:25,308 INFO L87 Difference]: Start difference. First operand 863 states and 1632 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states 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 14:35:25,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:35:25,370 INFO L93 Difference]: Finished difference Result 921 states and 1724 transitions. [2023-12-20 14:35:25,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 14:35:25,370 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2023-12-20 14:35:25,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:35:25,373 INFO L225 Difference]: With dead ends: 921 [2023-12-20 14:35:25,373 INFO L226 Difference]: Without dead ends: 863 [2023-12-20 14:35:25,374 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 14:35:25,374 INFO L413 NwaCegarLoop]: 1629 mSDtfsCounter, 0 mSDsluCounter, 3204 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4833 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:35:25,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4833 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:35:25,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2023-12-20 14:35:25,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 863. [2023-12-20 14:35:25,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 863 states, 861 states have (on average 1.8373983739837398) internal successors, (1582), 862 states have internal predecessors, (1582), 0 states have call successors, (0), 0 states 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 14:35:25,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 863 states to 863 states and 1582 transitions. [2023-12-20 14:35:25,389 INFO L78 Accepts]: Start accepts. Automaton has 863 states and 1582 transitions. Word has length 25 [2023-12-20 14:35:25,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:35:25,390 INFO L495 AbstractCegarLoop]: Abstraction has 863 states and 1582 transitions. [2023-12-20 14:35:25,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states 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 14:35:25,390 INFO L276 IsEmpty]: Start isEmpty. Operand 863 states and 1582 transitions. [2023-12-20 14:35:25,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-20 14:35:25,391 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:35:25,391 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] [2023-12-20 14:35:25,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 14:35:25,391 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:35:25,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:35:25,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1720831264, now seen corresponding path program 1 times [2023-12-20 14:35:25,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:35:25,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120551461] [2023-12-20 14:35:25,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:35:25,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:35:25,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:35:25,572 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 14:35:25,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:35:25,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120551461] [2023-12-20 14:35:25,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120551461] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:35:25,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:35:25,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:35:25,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370755176] [2023-12-20 14:35:25,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:35:25,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 14:35:25,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:35:25,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 14:35:25,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 14:35:25,574 INFO L87 Difference]: Start difference. First operand 863 states and 1582 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states 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 14:35:30,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:35:30,874 INFO L93 Difference]: Finished difference Result 3118 states and 5891 transitions. [2023-12-20 14:35:30,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 14:35:30,874 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2023-12-20 14:35:30,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:35:30,883 INFO L225 Difference]: With dead ends: 3118 [2023-12-20 14:35:30,883 INFO L226 Difference]: Without dead ends: 2365 [2023-12-20 14:35:30,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 14:35:30,885 INFO L413 NwaCegarLoop]: 815 mSDtfsCounter, 2480 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5357 mSolverCounterSat, 1153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2480 SdHoareTripleChecker+Valid, 833 SdHoareTripleChecker+Invalid, 6510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1153 IncrementalHoareTripleChecker+Valid, 5357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:35:30,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2480 Valid, 833 Invalid, 6510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1153 Valid, 5357 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-12-20 14:35:30,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2365 states. [2023-12-20 14:35:30,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2365 to 2365. [2023-12-20 14:35:30,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2365 states, 2363 states have (on average 1.5641134151502327) internal successors, (3696), 2364 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states 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 14:35:30,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2365 states to 2365 states and 3696 transitions. [2023-12-20 14:35:30,945 INFO L78 Accepts]: Start accepts. Automaton has 2365 states and 3696 transitions. Word has length 59 [2023-12-20 14:35:30,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:35:30,945 INFO L495 AbstractCegarLoop]: Abstraction has 2365 states and 3696 transitions. [2023-12-20 14:35:30,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states 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 14:35:30,945 INFO L276 IsEmpty]: Start isEmpty. Operand 2365 states and 3696 transitions. [2023-12-20 14:35:30,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-20 14:35:30,946 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:35:30,946 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:35:30,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 14:35:30,947 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:35:30,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:35:30,947 INFO L85 PathProgramCache]: Analyzing trace with hash -363781862, now seen corresponding path program 1 times [2023-12-20 14:35:30,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:35:30,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624724370] [2023-12-20 14:35:30,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:35:30,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:35:30,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:35:31,141 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 14:35:31,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:35:31,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624724370] [2023-12-20 14:35:31,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624724370] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:35:31,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:35:31,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-20 14:35:31,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940369611] [2023-12-20 14:35:31,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:35:31,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 14:35:31,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:35:31,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 14:35:31,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-20 14:35:31,146 INFO L87 Difference]: Start difference. First operand 2365 states and 3696 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 9 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 14:35:31,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:35:31,440 INFO L93 Difference]: Finished difference Result 3135 states and 4942 transitions. [2023-12-20 14:35:31,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 14:35:31,440 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 9 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 14:35:31,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:35:31,449 INFO L225 Difference]: With dead ends: 3135 [2023-12-20 14:35:31,449 INFO L226 Difference]: Without dead ends: 3080 [2023-12-20 14:35:31,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2023-12-20 14:35:31,455 INFO L413 NwaCegarLoop]: 1573 mSDtfsCounter, 11585 mSDsluCounter, 2680 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11585 SdHoareTripleChecker+Valid, 4253 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:35:31,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11585 Valid, 4253 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 14:35:31,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3080 states. [2023-12-20 14:35:31,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3080 to 2418. [2023-12-20 14:35:31,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2418 states, 2416 states have (on average 1.5653973509933774) internal successors, (3782), 2417 states have internal predecessors, (3782), 0 states have call successors, (0), 0 states 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 14:35:31,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2418 states to 2418 states and 3782 transitions. [2023-12-20 14:35:31,494 INFO L78 Accepts]: Start accepts. Automaton has 2418 states and 3782 transitions. Word has length 74 [2023-12-20 14:35:31,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:35:31,496 INFO L495 AbstractCegarLoop]: Abstraction has 2418 states and 3782 transitions. [2023-12-20 14:35:31,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 9 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 14:35:31,496 INFO L276 IsEmpty]: Start isEmpty. Operand 2418 states and 3782 transitions. [2023-12-20 14:35:31,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-20 14:35:31,500 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:35:31,501 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:35:31,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 14:35:31,501 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:35:31,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:35:31,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1825621238, now seen corresponding path program 1 times [2023-12-20 14:35:31,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:35:31,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367943388] [2023-12-20 14:35:31,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:35:31,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:35:31,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:35:31,596 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 14:35:31,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:35:31,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367943388] [2023-12-20 14:35:31,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367943388] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:35:31,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:35:31,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:35:31,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791960149] [2023-12-20 14:35:31,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:35:31,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:35:31,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:35:31,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:35:31,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:35:31,599 INFO L87 Difference]: Start difference. First operand 2418 states and 3782 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 14:35:31,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:35:31,640 INFO L93 Difference]: Finished difference Result 2623 states and 4113 transitions. [2023-12-20 14:35:31,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:35:31,640 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 14:35:31,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:35:31,649 INFO L225 Difference]: With dead ends: 2623 [2023-12-20 14:35:31,649 INFO L226 Difference]: Without dead ends: 2515 [2023-12-20 14:35:31,651 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 14:35:31,652 INFO L413 NwaCegarLoop]: 1575 mSDtfsCounter, 1498 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1498 SdHoareTripleChecker+Valid, 1656 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:35:31,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1498 Valid, 1656 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:35:31,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2515 states. [2023-12-20 14:35:31,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2515 to 2511. [2023-12-20 14:35:31,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2511 states, 2509 states have (on average 1.5663611000398565) internal successors, (3930), 2510 states have internal predecessors, (3930), 0 states have call successors, (0), 0 states 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 14:35:31,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2511 states to 2511 states and 3930 transitions. [2023-12-20 14:35:31,708 INFO L78 Accepts]: Start accepts. Automaton has 2511 states and 3930 transitions. Word has length 76 [2023-12-20 14:35:31,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:35:31,709 INFO L495 AbstractCegarLoop]: Abstraction has 2511 states and 3930 transitions. [2023-12-20 14:35:31,709 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 14:35:31,709 INFO L276 IsEmpty]: Start isEmpty. Operand 2511 states and 3930 transitions. [2023-12-20 14:35:31,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-20 14:35:31,710 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:35:31,710 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:35:31,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 14:35:31,710 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:35:31,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:35:31,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1823476286, now seen corresponding path program 1 times [2023-12-20 14:35:31,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:35:31,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296919941] [2023-12-20 14:35:31,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:35:31,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:35:31,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:35:32,078 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 14:35:32,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:35:32,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296919941] [2023-12-20 14:35:32,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296919941] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:35:32,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:35:32,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-20 14:35:32,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048723109] [2023-12-20 14:35:32,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:35:32,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 14:35:32,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:35:32,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 14:35:32,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-20 14:35:32,080 INFO L87 Difference]: Start difference. First operand 2511 states and 3930 transitions. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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 14:35:32,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:35:32,392 INFO L93 Difference]: Finished difference Result 2714 states and 4254 transitions. [2023-12-20 14:35:32,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-20 14:35:32,392 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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 14:35:32,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:35:32,403 INFO L225 Difference]: With dead ends: 2714 [2023-12-20 14:35:32,403 INFO L226 Difference]: Without dead ends: 2513 [2023-12-20 14:35:32,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2023-12-20 14:35:32,405 INFO L413 NwaCegarLoop]: 1571 mSDtfsCounter, 9060 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9060 SdHoareTripleChecker+Valid, 2081 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:35:32,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9060 Valid, 2081 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 14:35:32,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2513 states. [2023-12-20 14:35:32,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2513 to 2511. [2023-12-20 14:35:32,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2511 states, 2509 states have (on average 1.5655639697090473) internal successors, (3928), 2510 states have internal predecessors, (3928), 0 states have call successors, (0), 0 states 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 14:35:32,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2511 states to 2511 states and 3928 transitions. [2023-12-20 14:35:32,457 INFO L78 Accepts]: Start accepts. Automaton has 2511 states and 3928 transitions. Word has length 76 [2023-12-20 14:35:32,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:35:32,458 INFO L495 AbstractCegarLoop]: Abstraction has 2511 states and 3928 transitions. [2023-12-20 14:35:32,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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 14:35:32,458 INFO L276 IsEmpty]: Start isEmpty. Operand 2511 states and 3928 transitions. [2023-12-20 14:35:32,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-20 14:35:32,459 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:35:32,459 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:35:32,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 14:35:32,460 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:35:32,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:35:32,461 INFO L85 PathProgramCache]: Analyzing trace with hash -821573364, now seen corresponding path program 1 times [2023-12-20 14:35:32,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:35:32,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673783456] [2023-12-20 14:35:32,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:35:32,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:35:32,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:35:32,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:35:32,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:35:32,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673783456] [2023-12-20 14:35:32,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673783456] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:35:32,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:35:32,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 14:35:32,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459500306] [2023-12-20 14:35:32,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:35:32,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 14:35:32,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:35:32,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 14:35:32,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 14:35:32,631 INFO L87 Difference]: Start difference. First operand 2511 states and 3928 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states 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 14:35:32,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:35:32,667 INFO L93 Difference]: Finished difference Result 2519 states and 3937 transitions. [2023-12-20 14:35:32,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 14:35:32,667 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2023-12-20 14:35:32,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:35:32,673 INFO L225 Difference]: With dead ends: 2519 [2023-12-20 14:35:32,673 INFO L226 Difference]: Without dead ends: 2517 [2023-12-20 14:35:32,676 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 14:35:32,676 INFO L413 NwaCegarLoop]: 1578 mSDtfsCounter, 1 mSDsluCounter, 3148 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4726 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 14:35:32,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4726 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:35:32,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2517 states. [2023-12-20 14:35:32,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2517 to 2515. [2023-12-20 14:35:32,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2515 states, 2513 states have (on average 1.564265817747712) internal successors, (3931), 2514 states have internal predecessors, (3931), 0 states have call successors, (0), 0 states 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 14:35:32,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2515 states to 2515 states and 3931 transitions. [2023-12-20 14:35:32,714 INFO L78 Accepts]: Start accepts. Automaton has 2515 states and 3931 transitions. Word has length 77 [2023-12-20 14:35:32,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:35:32,715 INFO L495 AbstractCegarLoop]: Abstraction has 2515 states and 3931 transitions. [2023-12-20 14:35:32,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states 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 14:35:32,715 INFO L276 IsEmpty]: Start isEmpty. Operand 2515 states and 3931 transitions. [2023-12-20 14:35:32,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-20 14:35:32,718 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:35:32,719 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:35:32,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 14:35:32,719 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:35:32,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:35:32,719 INFO L85 PathProgramCache]: Analyzing trace with hash -361373662, now seen corresponding path program 1 times [2023-12-20 14:35:32,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:35:32,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338123755] [2023-12-20 14:35:32,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:35:32,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:35:32,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:35:32,757 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 14:35:32,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:35:32,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338123755] [2023-12-20 14:35:32,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338123755] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:35:32,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:35:32,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:35:32,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757436384] [2023-12-20 14:35:32,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:35:32,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:35:32,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:35:32,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:35:32,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:35:32,759 INFO L87 Difference]: Start difference. First operand 2515 states and 3931 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 14:35:32,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:35:32,790 INFO L93 Difference]: Finished difference Result 2909 states and 4551 transitions. [2023-12-20 14:35:32,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:35:32,790 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 14:35:32,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:35:32,796 INFO L225 Difference]: With dead ends: 2909 [2023-12-20 14:35:32,797 INFO L226 Difference]: Without dead ends: 2704 [2023-12-20 14:35:32,797 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 14:35:32,798 INFO L413 NwaCegarLoop]: 1644 mSDtfsCounter, 1515 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1515 SdHoareTripleChecker+Valid, 1737 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 14:35:32,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1515 Valid, 1737 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:35:32,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2704 states. [2023-12-20 14:35:32,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2704 to 2702. [2023-12-20 14:35:32,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2702 states, 2700 states have (on average 1.5637037037037036) internal successors, (4222), 2701 states have internal predecessors, (4222), 0 states have call successors, (0), 0 states 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 14:35:32,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2702 states to 2702 states and 4222 transitions. [2023-12-20 14:35:32,847 INFO L78 Accepts]: Start accepts. Automaton has 2702 states and 4222 transitions. Word has length 78 [2023-12-20 14:35:32,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:35:32,847 INFO L495 AbstractCegarLoop]: Abstraction has 2702 states and 4222 transitions. [2023-12-20 14:35:32,847 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 14:35:32,847 INFO L276 IsEmpty]: Start isEmpty. Operand 2702 states and 4222 transitions. [2023-12-20 14:35:32,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-20 14:35:32,848 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:35:32,848 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:35:32,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 14:35:32,848 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:35:32,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:35:32,849 INFO L85 PathProgramCache]: Analyzing trace with hash -771760350, now seen corresponding path program 1 times [2023-12-20 14:35:32,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:35:32,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449799148] [2023-12-20 14:35:32,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:35:32,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:35:32,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:35:32,889 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 14:35:32,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:35:32,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449799148] [2023-12-20 14:35:32,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449799148] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:35:32,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:35:32,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:35:32,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566547617] [2023-12-20 14:35:32,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:35:32,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:35:32,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:35:32,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:35:32,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:35:32,891 INFO L87 Difference]: Start difference. First operand 2702 states and 4222 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 14:35:32,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:35:32,929 INFO L93 Difference]: Finished difference Result 3454 states and 5396 transitions. [2023-12-20 14:35:32,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:35:32,930 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 14:35:32,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:35:32,939 INFO L225 Difference]: With dead ends: 3454 [2023-12-20 14:35:32,939 INFO L226 Difference]: Without dead ends: 3062 [2023-12-20 14:35:32,941 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 14:35:32,943 INFO L413 NwaCegarLoop]: 1642 mSDtfsCounter, 1513 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1513 SdHoareTripleChecker+Valid, 1739 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 14:35:32,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1513 Valid, 1739 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:35:32,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3062 states. [2023-12-20 14:35:32,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3062 to 3060. [2023-12-20 14:35:32,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3060 states, 3058 states have (on average 1.5604970568999346) internal successors, (4772), 3059 states have internal predecessors, (4772), 0 states have call successors, (0), 0 states 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 14:35:32,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3060 states to 3060 states and 4772 transitions. [2023-12-20 14:35:32,997 INFO L78 Accepts]: Start accepts. Automaton has 3060 states and 4772 transitions. Word has length 78 [2023-12-20 14:35:32,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:35:32,997 INFO L495 AbstractCegarLoop]: Abstraction has 3060 states and 4772 transitions. [2023-12-20 14:35:32,998 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 14:35:32,998 INFO L276 IsEmpty]: Start isEmpty. Operand 3060 states and 4772 transitions. [2023-12-20 14:35:32,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-20 14:35:32,998 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:35:32,999 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:35:32,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 14:35:32,999 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:35:33,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:35:33,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1000399582, now seen corresponding path program 1 times [2023-12-20 14:35:33,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:35:33,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326426683] [2023-12-20 14:35:33,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:35:33,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:35:33,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:35:33,056 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 14:35:33,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:35:33,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326426683] [2023-12-20 14:35:33,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326426683] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:35:33,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:35:33,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:35:33,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667039103] [2023-12-20 14:35:33,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:35:33,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:35:33,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:35:33,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:35:33,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:35:33,058 INFO L87 Difference]: Start difference. First operand 3060 states and 4772 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 14:35:33,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:35:33,109 INFO L93 Difference]: Finished difference Result 4496 states and 6990 transitions. [2023-12-20 14:35:33,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:35:33,109 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 14:35:33,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:35:33,130 INFO L225 Difference]: With dead ends: 4496 [2023-12-20 14:35:33,130 INFO L226 Difference]: Without dead ends: 3746 [2023-12-20 14:35:33,132 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 14:35:33,133 INFO L413 NwaCegarLoop]: 1630 mSDtfsCounter, 1509 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1509 SdHoareTripleChecker+Valid, 1735 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 14:35:33,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1509 Valid, 1735 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:35:33,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3746 states. [2023-12-20 14:35:33,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3746 to 3744. [2023-12-20 14:35:33,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3744 states, 3742 states have (on average 1.5521111704970605) internal successors, (5808), 3743 states have internal predecessors, (5808), 0 states have call successors, (0), 0 states 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 14:35:33,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3744 states to 3744 states and 5808 transitions. [2023-12-20 14:35:33,200 INFO L78 Accepts]: Start accepts. Automaton has 3744 states and 5808 transitions. Word has length 78 [2023-12-20 14:35:33,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:35:33,200 INFO L495 AbstractCegarLoop]: Abstraction has 3744 states and 5808 transitions. [2023-12-20 14:35:33,200 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 14:35:33,200 INFO L276 IsEmpty]: Start isEmpty. Operand 3744 states and 5808 transitions. [2023-12-20 14:35:33,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-20 14:35:33,201 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:35:33,201 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:35:33,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 14:35:33,201 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:35:33,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:35:33,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1626055646, now seen corresponding path program 1 times [2023-12-20 14:35:33,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:35:33,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023557084] [2023-12-20 14:35:33,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:35:33,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:35:33,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:35:33,239 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 14:35:33,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:35:33,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023557084] [2023-12-20 14:35:33,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023557084] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:35:33,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:35:33,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:35:33,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873697583] [2023-12-20 14:35:33,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:35:33,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:35:33,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:35:33,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:35:33,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:35:33,240 INFO L87 Difference]: Start difference. First operand 3744 states and 5808 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 14:35:33,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:35:33,354 INFO L93 Difference]: Finished difference Result 6484 states and 9986 transitions. [2023-12-20 14:35:33,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:35:33,355 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 14:35:33,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:35:33,361 INFO L225 Difference]: With dead ends: 6484 [2023-12-20 14:35:33,361 INFO L226 Difference]: Without dead ends: 5050 [2023-12-20 14:35:33,362 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 14:35:33,363 INFO L413 NwaCegarLoop]: 1628 mSDtfsCounter, 1507 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1507 SdHoareTripleChecker+Valid, 1737 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 14:35:33,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1507 Valid, 1737 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:35:33,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5050 states. [2023-12-20 14:35:33,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5050 to 5048. [2023-12-20 14:35:33,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5048 states, 5046 states have (on average 1.5362663495838287) internal successors, (7752), 5047 states have internal predecessors, (7752), 0 states have call successors, (0), 0 states 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 14:35:33,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5048 states to 5048 states and 7752 transitions. [2023-12-20 14:35:33,452 INFO L78 Accepts]: Start accepts. Automaton has 5048 states and 7752 transitions. Word has length 78 [2023-12-20 14:35:33,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:35:33,452 INFO L495 AbstractCegarLoop]: Abstraction has 5048 states and 7752 transitions. [2023-12-20 14:35:33,452 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 14:35:33,452 INFO L276 IsEmpty]: Start isEmpty. Operand 5048 states and 7752 transitions. [2023-12-20 14:35:33,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-20 14:35:33,453 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:35:33,453 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:35:33,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 14:35:33,453 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:35:33,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:35:33,454 INFO L85 PathProgramCache]: Analyzing trace with hash -737322206, now seen corresponding path program 1 times [2023-12-20 14:35:33,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:35:33,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340766425] [2023-12-20 14:35:33,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:35:33,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:35:33,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:35:33,490 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 14:35:33,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:35:33,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340766425] [2023-12-20 14:35:33,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340766425] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:35:33,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:35:33,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:35:33,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136663631] [2023-12-20 14:35:33,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:35:33,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:35:33,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:35:33,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:35:33,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:35:33,492 INFO L87 Difference]: Start difference. First operand 5048 states and 7752 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 14:35:33,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:35:33,579 INFO L93 Difference]: Finished difference Result 10268 states and 15594 transitions. [2023-12-20 14:35:33,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:35:33,580 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 14:35:33,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:35:33,589 INFO L225 Difference]: With dead ends: 10268 [2023-12-20 14:35:33,590 INFO L226 Difference]: Without dead ends: 7530 [2023-12-20 14:35:33,593 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 14:35:33,594 INFO L413 NwaCegarLoop]: 1626 mSDtfsCounter, 1505 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1505 SdHoareTripleChecker+Valid, 1739 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 14:35:33,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1505 Valid, 1739 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:35:33,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7530 states. [2023-12-20 14:35:33,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7530 to 7528. [2023-12-20 14:35:33,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7528 states, 7526 states have (on average 1.5126229072548498) internal successors, (11384), 7527 states have internal predecessors, (11384), 0 states have call successors, (0), 0 states 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 14:35:33,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7528 states to 7528 states and 11384 transitions. [2023-12-20 14:35:33,740 INFO L78 Accepts]: Start accepts. Automaton has 7528 states and 11384 transitions. Word has length 78 [2023-12-20 14:35:33,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:35:33,740 INFO L495 AbstractCegarLoop]: Abstraction has 7528 states and 11384 transitions. [2023-12-20 14:35:33,740 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 14:35:33,740 INFO L276 IsEmpty]: Start isEmpty. Operand 7528 states and 11384 transitions. [2023-12-20 14:35:33,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-20 14:35:33,741 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:35:33,741 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:35:33,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 14:35:33,741 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:35:33,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:35:33,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1040343518, now seen corresponding path program 1 times [2023-12-20 14:35:33,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:35:33,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604779599] [2023-12-20 14:35:33,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:35:33,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:35:33,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:35:33,775 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 14:35:33,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:35:33,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604779599] [2023-12-20 14:35:33,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604779599] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:35:33,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:35:33,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:35:33,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990687739] [2023-12-20 14:35:33,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:35:33,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:35:33,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:35:33,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:35:33,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:35:33,777 INFO L87 Difference]: Start difference. First operand 7528 states and 11384 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 14:35:33,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:35:33,935 INFO L93 Difference]: Finished difference Result 17452 states and 26042 transitions. [2023-12-20 14:35:33,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:35:33,936 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 14:35:33,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:35:33,953 INFO L225 Difference]: With dead ends: 17452 [2023-12-20 14:35:33,954 INFO L226 Difference]: Without dead ends: 12234 [2023-12-20 14:35:33,963 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 14:35:33,964 INFO L413 NwaCegarLoop]: 1640 mSDtfsCounter, 1511 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1511 SdHoareTripleChecker+Valid, 1741 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 14:35:33,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1511 Valid, 1741 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:35:33,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12234 states. [2023-12-20 14:35:34,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12234 to 12232. [2023-12-20 14:35:34,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12232 states, 12230 states have (on average 1.4829108748977924) internal successors, (18136), 12231 states have internal predecessors, (18136), 0 states have call successors, (0), 0 states 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 14:35:34,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12232 states to 12232 states and 18136 transitions. [2023-12-20 14:35:34,272 INFO L78 Accepts]: Start accepts. Automaton has 12232 states and 18136 transitions. Word has length 78 [2023-12-20 14:35:34,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:35:34,272 INFO L495 AbstractCegarLoop]: Abstraction has 12232 states and 18136 transitions. [2023-12-20 14:35:34,272 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 14:35:34,272 INFO L276 IsEmpty]: Start isEmpty. Operand 12232 states and 18136 transitions. [2023-12-20 14:35:34,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-20 14:35:34,273 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:35:34,273 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:35:34,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 14:35:34,273 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:35:34,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:35:34,274 INFO L85 PathProgramCache]: Analyzing trace with hash -674710201, now seen corresponding path program 1 times [2023-12-20 14:35:34,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:35:34,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456238397] [2023-12-20 14:35:34,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:35:34,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:35:34,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:35:34,308 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 14:35:34,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:35:34,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456238397] [2023-12-20 14:35:34,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456238397] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:35:34,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:35:34,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:35:34,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013599189] [2023-12-20 14:35:34,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:35:34,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:35:34,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:35:34,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:35:34,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:35:34,309 INFO L87 Difference]: Start difference. First operand 12232 states and 18136 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 14:35:34,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:35:34,528 INFO L93 Difference]: Finished difference Result 22479 states and 33374 transitions. [2023-12-20 14:35:34,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:35:34,529 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 14:35:34,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:35:34,553 INFO L225 Difference]: With dead ends: 22479 [2023-12-20 14:35:34,553 INFO L226 Difference]: Without dead ends: 16972 [2023-12-20 14:35:34,563 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 14:35:34,563 INFO L413 NwaCegarLoop]: 1649 mSDtfsCounter, 1514 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1514 SdHoareTripleChecker+Valid, 1738 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 14:35:34,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1514 Valid, 1738 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:35:34,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16972 states. [2023-12-20 14:35:34,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16972 to 16970. [2023-12-20 14:35:34,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16970 states, 16968 states have (on average 1.4725365393682226) internal successors, (24986), 16969 states have internal predecessors, (24986), 0 states have call successors, (0), 0 states 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 14:35:34,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16970 states to 16970 states and 24986 transitions. [2023-12-20 14:35:34,932 INFO L78 Accepts]: Start accepts. Automaton has 16970 states and 24986 transitions. Word has length 80 [2023-12-20 14:35:34,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:35:34,932 INFO L495 AbstractCegarLoop]: Abstraction has 16970 states and 24986 transitions. [2023-12-20 14:35:34,933 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 14:35:34,933 INFO L276 IsEmpty]: Start isEmpty. Operand 16970 states and 24986 transitions. [2023-12-20 14:35:34,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-20 14:35:34,935 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:35:34,936 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:35:34,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 14:35:34,936 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:35:34,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:35:34,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1821309422, now seen corresponding path program 1 times [2023-12-20 14:35:34,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:35:34,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628476119] [2023-12-20 14:35:34,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:35:34,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:35:34,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:35:35,109 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-20 14:35:35,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:35:35,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628476119] [2023-12-20 14:35:35,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628476119] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:35:35,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:35:35,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-20 14:35:35,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519934682] [2023-12-20 14:35:35,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:35:35,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 14:35:35,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:35:35,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 14:35:35,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-20 14:35:35,111 INFO L87 Difference]: Start difference. First operand 16970 states and 24986 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states 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 14:35:37,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:35:37,059 INFO L93 Difference]: Finished difference Result 122522 states and 178786 transitions. [2023-12-20 14:35:37,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-20 14:35:37,060 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-12-20 14:35:37,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:35:37,264 INFO L225 Difference]: With dead ends: 122522 [2023-12-20 14:35:37,264 INFO L226 Difference]: Without dead ends: 107864 [2023-12-20 14:35:37,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-12-20 14:35:37,298 INFO L413 NwaCegarLoop]: 1667 mSDtfsCounter, 9884 mSDsluCounter, 2706 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9884 SdHoareTripleChecker+Valid, 4373 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:35:37,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9884 Valid, 4373 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 14:35:37,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107864 states. [2023-12-20 14:35:38,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107864 to 31626. [2023-12-20 14:35:38,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31626 states, 31624 states have (on average 1.4599671135846193) internal successors, (46170), 31625 states have internal predecessors, (46170), 0 states have call successors, (0), 0 states 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 14:35:38,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31626 states to 31626 states and 46170 transitions. [2023-12-20 14:35:38,533 INFO L78 Accepts]: Start accepts. Automaton has 31626 states and 46170 transitions. Word has length 100 [2023-12-20 14:35:38,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:35:38,533 INFO L495 AbstractCegarLoop]: Abstraction has 31626 states and 46170 transitions. [2023-12-20 14:35:38,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states 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 14:35:38,533 INFO L276 IsEmpty]: Start isEmpty. Operand 31626 states and 46170 transitions. [2023-12-20 14:35:38,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-20 14:35:38,536 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:35:38,537 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:35:38,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 14:35:38,537 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:35:38,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:35:38,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1410922734, now seen corresponding path program 1 times [2023-12-20 14:35:38,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:35:38,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775116449] [2023-12-20 14:35:38,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:35:38,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:35:38,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:35:38,669 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-20 14:35:38,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:35:38,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775116449] [2023-12-20 14:35:38,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775116449] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:35:38,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:35:38,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-20 14:35:38,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219868834] [2023-12-20 14:35:38,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:35:38,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 14:35:38,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:35:38,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 14:35:38,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-20 14:35:38,671 INFO L87 Difference]: Start difference. First operand 31626 states and 46170 transitions. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states 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 14:35:41,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:35:41,169 INFO L93 Difference]: Finished difference Result 137178 states and 199970 transitions. [2023-12-20 14:35:41,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-20 14:35:41,169 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-12-20 14:35:41,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:35:41,368 INFO L225 Difference]: With dead ends: 137178 [2023-12-20 14:35:41,368 INFO L226 Difference]: Without dead ends: 122520 [2023-12-20 14:35:41,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-12-20 14:35:41,411 INFO L413 NwaCegarLoop]: 1664 mSDtfsCounter, 9928 mSDsluCounter, 2580 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9928 SdHoareTripleChecker+Valid, 4244 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:35:41,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9928 Valid, 4244 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 14:35:41,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122520 states. [2023-12-20 14:35:43,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122520 to 53642. [2023-12-20 14:35:43,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53642 states, 53640 states have (on average 1.4501491424310216) internal successors, (77786), 53641 states have internal predecessors, (77786), 0 states have call successors, (0), 0 states 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 14:35:43,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53642 states to 53642 states and 77786 transitions. [2023-12-20 14:35:43,310 INFO L78 Accepts]: Start accepts. Automaton has 53642 states and 77786 transitions. Word has length 100 [2023-12-20 14:35:43,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:35:43,310 INFO L495 AbstractCegarLoop]: Abstraction has 53642 states and 77786 transitions. [2023-12-20 14:35:43,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states 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 14:35:43,311 INFO L276 IsEmpty]: Start isEmpty. Operand 53642 states and 77786 transitions. [2023-12-20 14:35:43,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-20 14:35:43,315 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:35:43,315 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:35:43,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 14:35:43,315 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:35:43,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:35:43,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1182283502, now seen corresponding path program 1 times [2023-12-20 14:35:43,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:35:43,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547833945] [2023-12-20 14:35:43,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:35:43,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:35:43,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:35:43,462 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-20 14:35:43,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:35:43,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547833945] [2023-12-20 14:35:43,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547833945] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:35:43,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:35:43,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-20 14:35:43,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701789823] [2023-12-20 14:35:43,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:35:43,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 14:35:43,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:35:43,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 14:35:43,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-20 14:35:43,464 INFO L87 Difference]: Start difference. First operand 53642 states and 77786 transitions. Second operand has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states 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 14:35:46,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:35:46,620 INFO L93 Difference]: Finished difference Result 151834 states and 221154 transitions. [2023-12-20 14:35:46,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-20 14:35:46,621 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-12-20 14:35:46,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:35:46,795 INFO L225 Difference]: With dead ends: 151834 [2023-12-20 14:35:46,795 INFO L226 Difference]: Without dead ends: 137176 [2023-12-20 14:35:46,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-12-20 14:35:46,826 INFO L413 NwaCegarLoop]: 1661 mSDtfsCounter, 9995 mSDsluCounter, 2616 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9995 SdHoareTripleChecker+Valid, 4277 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:35:46,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9995 Valid, 4277 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 14:35:46,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137176 states. [2023-12-20 14:35:49,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137176 to 68298. [2023-12-20 14:35:49,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68298 states, 68296 states have (on average 1.4491331849595877) internal successors, (98970), 68297 states have internal predecessors, (98970), 0 states have call successors, (0), 0 states 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 14:35:49,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68298 states to 68298 states and 98970 transitions. [2023-12-20 14:35:49,583 INFO L78 Accepts]: Start accepts. Automaton has 68298 states and 98970 transitions. Word has length 100 [2023-12-20 14:35:49,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:35:49,591 INFO L495 AbstractCegarLoop]: Abstraction has 68298 states and 98970 transitions. [2023-12-20 14:35:49,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states 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 14:35:49,591 INFO L276 IsEmpty]: Start isEmpty. Operand 68298 states and 98970 transitions. [2023-12-20 14:35:49,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-20 14:35:49,612 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:35:49,612 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:35:49,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-20 14:35:49,612 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:35:49,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:35:49,612 INFO L85 PathProgramCache]: Analyzing trace with hash 556627438, now seen corresponding path program 1 times [2023-12-20 14:35:49,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:35:49,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450310390] [2023-12-20 14:35:49,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:35:49,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:35:49,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:35:49,792 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-20 14:35:49,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:35:49,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450310390] [2023-12-20 14:35:49,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450310390] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:35:49,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:35:49,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-20 14:35:49,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831082660] [2023-12-20 14:35:49,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:35:49,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 14:35:49,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:35:49,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 14:35:49,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-20 14:35:49,793 INFO L87 Difference]: Start difference. First operand 68298 states and 98970 transitions. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states 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 14:35:53,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:35:53,370 INFO L93 Difference]: Finished difference Result 166490 states and 242338 transitions. [2023-12-20 14:35:53,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-20 14:35:53,370 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-12-20 14:35:53,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:35:53,555 INFO L225 Difference]: With dead ends: 166490 [2023-12-20 14:35:53,555 INFO L226 Difference]: Without dead ends: 151832 [2023-12-20 14:35:53,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-12-20 14:35:53,583 INFO L413 NwaCegarLoop]: 1658 mSDtfsCounter, 10061 mSDsluCounter, 2580 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10061 SdHoareTripleChecker+Valid, 4238 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:35:53,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10061 Valid, 4238 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 14:35:53,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151832 states. [2023-12-20 14:35:56,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151832 to 82954. [2023-12-20 14:35:56,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82954 states, 82952 states have (on average 1.4484762272157392) internal successors, (120154), 82953 states have internal predecessors, (120154), 0 states have call successors, (0), 0 states 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 14:35:56,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82954 states to 82954 states and 120154 transitions. [2023-12-20 14:35:56,414 INFO L78 Accepts]: Start accepts. Automaton has 82954 states and 120154 transitions. Word has length 100 [2023-12-20 14:35:56,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:35:56,414 INFO L495 AbstractCegarLoop]: Abstraction has 82954 states and 120154 transitions. [2023-12-20 14:35:56,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states 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 14:35:56,414 INFO L276 IsEmpty]: Start isEmpty. Operand 82954 states and 120154 transitions. [2023-12-20 14:35:56,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-20 14:35:56,420 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:35:56,420 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:35:56,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-20 14:35:56,420 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:35:56,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:35:56,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1445360878, now seen corresponding path program 1 times [2023-12-20 14:35:56,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:35:56,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475044429] [2023-12-20 14:35:56,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:35:56,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:35:56,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:35:56,545 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-20 14:35:56,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:35:56,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475044429] [2023-12-20 14:35:56,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475044429] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:35:56,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:35:56,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-20 14:35:56,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996999762] [2023-12-20 14:35:56,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:35:56,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 14:35:56,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:35:56,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 14:35:56,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-20 14:35:56,546 INFO L87 Difference]: Start difference. First operand 82954 states and 120154 transitions. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states 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 14:36:00,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:36:00,336 INFO L93 Difference]: Finished difference Result 181146 states and 263522 transitions. [2023-12-20 14:36:00,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-20 14:36:00,336 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-12-20 14:36:00,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:36:00,588 INFO L225 Difference]: With dead ends: 181146 [2023-12-20 14:36:00,588 INFO L226 Difference]: Without dead ends: 166488 [2023-12-20 14:36:00,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-12-20 14:36:00,636 INFO L413 NwaCegarLoop]: 1661 mSDtfsCounter, 9919 mSDsluCounter, 2636 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9919 SdHoareTripleChecker+Valid, 4297 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:36:00,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9919 Valid, 4297 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 14:36:00,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166488 states. [2023-12-20 14:36:03,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166488 to 97610. [2023-12-20 14:36:03,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97610 states, 97608 states have (on average 1.4480165560199985) internal successors, (141338), 97609 states have internal predecessors, (141338), 0 states have call successors, (0), 0 states 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 14:36:04,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97610 states to 97610 states and 141338 transitions. [2023-12-20 14:36:04,135 INFO L78 Accepts]: Start accepts. Automaton has 97610 states and 141338 transitions. Word has length 100 [2023-12-20 14:36:04,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:36:04,135 INFO L495 AbstractCegarLoop]: Abstraction has 97610 states and 141338 transitions. [2023-12-20 14:36:04,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states 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 14:36:04,135 INFO L276 IsEmpty]: Start isEmpty. Operand 97610 states and 141338 transitions. [2023-12-20 14:36:04,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-20 14:36:04,140 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:36:04,140 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:36:04,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-20 14:36:04,140 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:36:04,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:36:04,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1142339566, now seen corresponding path program 1 times [2023-12-20 14:36:04,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:36:04,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790933762] [2023-12-20 14:36:04,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:36:04,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:36:04,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:36:04,265 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-20 14:36:04,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:36:04,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790933762] [2023-12-20 14:36:04,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790933762] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:36:04,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:36:04,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-20 14:36:04,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184756020] [2023-12-20 14:36:04,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:36:04,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 14:36:04,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:36:04,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 14:36:04,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-20 14:36:04,267 INFO L87 Difference]: Start difference. First operand 97610 states and 141338 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states 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 14:36:08,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:36:08,705 INFO L93 Difference]: Finished difference Result 195802 states and 284706 transitions. [2023-12-20 14:36:08,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-20 14:36:08,705 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-12-20 14:36:08,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:36:09,037 INFO L225 Difference]: With dead ends: 195802 [2023-12-20 14:36:09,037 INFO L226 Difference]: Without dead ends: 181144 [2023-12-20 14:36:09,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-12-20 14:36:09,085 INFO L413 NwaCegarLoop]: 1666 mSDtfsCounter, 9815 mSDsluCounter, 2828 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9815 SdHoareTripleChecker+Valid, 4494 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:36:09,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9815 Valid, 4494 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 14:36:09,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181144 states. [2023-12-20 14:36:12,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181144 to 112266. [2023-12-20 14:36:12,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112266 states, 112264 states have (on average 1.4476769044395355) internal successors, (162522), 112265 states have internal predecessors, (162522), 0 states have call successors, (0), 0 states 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 14:36:13,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112266 states to 112266 states and 162522 transitions. [2023-12-20 14:36:13,141 INFO L78 Accepts]: Start accepts. Automaton has 112266 states and 162522 transitions. Word has length 100 [2023-12-20 14:36:13,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:36:13,142 INFO L495 AbstractCegarLoop]: Abstraction has 112266 states and 162522 transitions. [2023-12-20 14:36:13,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states 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 14:36:13,142 INFO L276 IsEmpty]: Start isEmpty. Operand 112266 states and 162522 transitions. [2023-12-20 14:36:13,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-20 14:36:13,148 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:36:13,148 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:36:13,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-20 14:36:13,149 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:36:13,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:36:13,149 INFO L85 PathProgramCache]: Analyzing trace with hash 2105207190, now seen corresponding path program 1 times [2023-12-20 14:36:13,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:36:13,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925478948] [2023-12-20 14:36:13,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:36:13,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:36:13,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:36:13,247 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:36:13,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:36:13,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925478948] [2023-12-20 14:36:13,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925478948] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:36:13,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:36:13,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:36:13,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556485685] [2023-12-20 14:36:13,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:36:13,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:36:13,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:36:13,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:36:13,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:36:13,248 INFO L87 Difference]: Start difference. First operand 112266 states and 162522 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states 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 14:36:15,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:36:15,544 INFO L93 Difference]: Finished difference Result 189093 states and 274868 transitions. [2023-12-20 14:36:15,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:36:15,544 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2023-12-20 14:36:15,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:36:15,641 INFO L225 Difference]: With dead ends: 189093 [2023-12-20 14:36:15,641 INFO L226 Difference]: Without dead ends: 79139 [2023-12-20 14:36:15,670 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 14:36:15,670 INFO L413 NwaCegarLoop]: 1635 mSDtfsCounter, 66 mSDsluCounter, 1565 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 3200 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 14:36:15,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 3200 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:36:15,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79139 states. [2023-12-20 14:36:18,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79139 to 79137. [2023-12-20 14:36:18,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79137 states, 79135 states have (on average 1.4531244076578) internal successors, (114993), 79136 states have internal predecessors, (114993), 0 states have call successors, (0), 0 states 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 14:36:18,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79137 states to 79137 states and 114993 transitions. [2023-12-20 14:36:18,177 INFO L78 Accepts]: Start accepts. Automaton has 79137 states and 114993 transitions. Word has length 102 [2023-12-20 14:36:18,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:36:18,177 INFO L495 AbstractCegarLoop]: Abstraction has 79137 states and 114993 transitions. [2023-12-20 14:36:18,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states 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 14:36:18,177 INFO L276 IsEmpty]: Start isEmpty. Operand 79137 states and 114993 transitions. [2023-12-20 14:36:18,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-20 14:36:18,194 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:36:18,195 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:36:18,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-20 14:36:18,195 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:36:18,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:36:18,195 INFO L85 PathProgramCache]: Analyzing trace with hash 939693075, now seen corresponding path program 1 times [2023-12-20 14:36:18,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:36:18,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511803398] [2023-12-20 14:36:18,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:36:18,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:36:18,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:36:18,448 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 14:36:18,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:36:18,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511803398] [2023-12-20 14:36:18,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511803398] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:36:18,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:36:18,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-20 14:36:18,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055535654] [2023-12-20 14:36:18,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:36:18,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 14:36:18,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:36:18,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 14:36:18,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-20 14:36:18,450 INFO L87 Difference]: Start difference. First operand 79137 states and 114993 transitions. Second operand has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 9 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 14:36:21,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:36:21,850 INFO L93 Difference]: Finished difference Result 150833 states and 219833 transitions. [2023-12-20 14:36:21,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-20 14:36:21,852 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 9 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2023-12-20 14:36:21,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:36:22,056 INFO L225 Difference]: With dead ends: 150833 [2023-12-20 14:36:22,056 INFO L226 Difference]: Without dead ends: 140591 [2023-12-20 14:36:22,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-12-20 14:36:22,089 INFO L413 NwaCegarLoop]: 1656 mSDtfsCounter, 9893 mSDsluCounter, 2945 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9893 SdHoareTripleChecker+Valid, 4601 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:36:22,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9893 Valid, 4601 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 14:36:22,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140591 states. [2023-12-20 14:36:25,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140591 to 89377. [2023-12-20 14:36:25,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89377 states, 89375 states have (on average 1.4527664335664336) internal successors, (129841), 89376 states have internal predecessors, (129841), 0 states have call successors, (0), 0 states 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 14:36:25,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89377 states to 89377 states and 129841 transitions. [2023-12-20 14:36:25,495 INFO L78 Accepts]: Start accepts. Automaton has 89377 states and 129841 transitions. Word has length 102 [2023-12-20 14:36:25,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:36:25,495 INFO L495 AbstractCegarLoop]: Abstraction has 89377 states and 129841 transitions. [2023-12-20 14:36:25,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 9 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 14:36:25,495 INFO L276 IsEmpty]: Start isEmpty. Operand 89377 states and 129841 transitions. [2023-12-20 14:36:25,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-20 14:36:25,498 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:36:25,498 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:36:25,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-20 14:36:25,499 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:36:25,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:36:25,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1661071050, now seen corresponding path program 1 times [2023-12-20 14:36:25,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:36:25,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513440515] [2023-12-20 14:36:25,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:36:25,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:36:25,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:36:25,559 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:36:25,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:36:25,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513440515] [2023-12-20 14:36:25,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513440515] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:36:25,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:36:25,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:36:25,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807626224] [2023-12-20 14:36:25,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:36:25,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:36:25,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:36:25,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:36:25,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:36:25,560 INFO L87 Difference]: Start difference. First operand 89377 states and 129841 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 14:36:27,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:36:27,010 INFO L93 Difference]: Finished difference Result 132901 states and 192947 transitions. [2023-12-20 14:36:27,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:36:27,010 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 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 103 [2023-12-20 14:36:27,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:36:27,056 INFO L225 Difference]: With dead ends: 132901 [2023-12-20 14:36:27,056 INFO L226 Difference]: Without dead ends: 45859 [2023-12-20 14:36:27,088 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 14:36:27,088 INFO L413 NwaCegarLoop]: 1628 mSDtfsCounter, 61 mSDsluCounter, 1557 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 3185 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 14:36:27,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 3185 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:36:27,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45859 states. [2023-12-20 14:36:28,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45859 to 45857. [2023-12-20 14:36:28,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45857 states, 45855 states have (on average 1.4435285137934795) internal successors, (66193), 45856 states have internal predecessors, (66193), 0 states have call successors, (0), 0 states 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 14:36:28,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45857 states to 45857 states and 66193 transitions. [2023-12-20 14:36:28,635 INFO L78 Accepts]: Start accepts. Automaton has 45857 states and 66193 transitions. Word has length 103 [2023-12-20 14:36:28,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:36:28,635 INFO L495 AbstractCegarLoop]: Abstraction has 45857 states and 66193 transitions. [2023-12-20 14:36:28,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 14:36:28,635 INFO L276 IsEmpty]: Start isEmpty. Operand 45857 states and 66193 transitions. [2023-12-20 14:36:28,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-20 14:36:28,638 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:36:28,638 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:36:28,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-20 14:36:28,638 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:36:28,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:36:28,638 INFO L85 PathProgramCache]: Analyzing trace with hash 61284536, now seen corresponding path program 1 times [2023-12-20 14:36:28,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:36:28,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972450873] [2023-12-20 14:36:28,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:36:28,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:36:28,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:36:28,713 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:36:28,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:36:28,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972450873] [2023-12-20 14:36:28,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972450873] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:36:28,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:36:28,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:36:28,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117142133] [2023-12-20 14:36:28,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:36:28,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:36:28,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:36:28,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:36:28,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:36:28,714 INFO L87 Difference]: Start difference. First operand 45857 states and 66193 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states 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 14:36:29,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:36:29,361 INFO L93 Difference]: Finished difference Result 67621 states and 97475 transitions. [2023-12-20 14:36:29,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:36:29,361 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 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 105 [2023-12-20 14:36:29,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:36:29,384 INFO L225 Difference]: With dead ends: 67621 [2023-12-20 14:36:29,384 INFO L226 Difference]: Without dead ends: 24099 [2023-12-20 14:36:29,400 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 14:36:29,401 INFO L413 NwaCegarLoop]: 1621 mSDtfsCounter, 58 mSDsluCounter, 1549 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 3170 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 14:36:29,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 3170 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:36:29,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24099 states. [2023-12-20 14:36:30,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24099 to 24097. [2023-12-20 14:36:30,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24097 states, 24095 states have (on average 1.4376841668395932) internal successors, (34641), 24096 states have internal predecessors, (34641), 0 states have call successors, (0), 0 states 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 14:36:30,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24097 states to 24097 states and 34641 transitions. [2023-12-20 14:36:30,185 INFO L78 Accepts]: Start accepts. Automaton has 24097 states and 34641 transitions. Word has length 105 [2023-12-20 14:36:30,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:36:30,185 INFO L495 AbstractCegarLoop]: Abstraction has 24097 states and 34641 transitions. [2023-12-20 14:36:30,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states 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 14:36:30,185 INFO L276 IsEmpty]: Start isEmpty. Operand 24097 states and 34641 transitions. [2023-12-20 14:36:30,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-20 14:36:30,187 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:36:30,187 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:36:30,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-20 14:36:30,188 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:36:30,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:36:30,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1006980058, now seen corresponding path program 1 times [2023-12-20 14:36:30,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:36:30,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191486242] [2023-12-20 14:36:30,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:36:30,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:36:30,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:36:30,255 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:36:30,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:36:30,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191486242] [2023-12-20 14:36:30,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191486242] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:36:30,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:36:30,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:36:30,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694011021] [2023-12-20 14:36:30,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:36:30,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:36:30,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:36:30,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:36:30,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:36:30,256 INFO L87 Difference]: Start difference. First operand 24097 states and 34641 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states 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 14:36:30,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:36:30,550 INFO L93 Difference]: Finished difference Result 34981 states and 50147 transitions. [2023-12-20 14:36:30,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:36:30,551 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 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 107 [2023-12-20 14:36:30,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:36:30,564 INFO L225 Difference]: With dead ends: 34981 [2023-12-20 14:36:30,564 INFO L226 Difference]: Without dead ends: 13219 [2023-12-20 14:36:30,577 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 14:36:30,577 INFO L413 NwaCegarLoop]: 1614 mSDtfsCounter, 55 mSDsluCounter, 1541 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 3155 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 14:36:30,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 3155 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:36:30,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13219 states. [2023-12-20 14:36:31,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13219 to 13217. [2023-12-20 14:36:31,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13217 states, 13215 states have (on average 1.4378357926598562) internal successors, (19001), 13216 states have internal predecessors, (19001), 0 states have call successors, (0), 0 states 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 14:36:31,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13217 states to 13217 states and 19001 transitions. [2023-12-20 14:36:31,043 INFO L78 Accepts]: Start accepts. Automaton has 13217 states and 19001 transitions. Word has length 107 [2023-12-20 14:36:31,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:36:31,043 INFO L495 AbstractCegarLoop]: Abstraction has 13217 states and 19001 transitions. [2023-12-20 14:36:31,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states 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 14:36:31,043 INFO L276 IsEmpty]: Start isEmpty. Operand 13217 states and 19001 transitions. [2023-12-20 14:36:31,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-20 14:36:31,044 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:36:31,045 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:36:31,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-20 14:36:31,045 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:36:31,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:36:31,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1099986668, now seen corresponding path program 1 times [2023-12-20 14:36:31,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:36:31,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765773445] [2023-12-20 14:36:31,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:36:31,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:36:31,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:36:31,113 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:36:31,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:36:31,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765773445] [2023-12-20 14:36:31,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765773445] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:36:31,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:36:31,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:36:31,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747881883] [2023-12-20 14:36:31,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:36:31,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:36:31,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:36:31,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:36:31,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:36:31,117 INFO L87 Difference]: Start difference. First operand 13217 states and 19001 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 14:36:31,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:36:31,285 INFO L93 Difference]: Finished difference Result 18661 states and 26687 transitions. [2023-12-20 14:36:31,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:36:31,286 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2023-12-20 14:36:31,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:36:31,295 INFO L225 Difference]: With dead ends: 18661 [2023-12-20 14:36:31,295 INFO L226 Difference]: Without dead ends: 7779 [2023-12-20 14:36:31,302 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 14:36:31,302 INFO L413 NwaCegarLoop]: 1607 mSDtfsCounter, 52 mSDsluCounter, 1533 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 3140 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 14:36:31,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 3140 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:36:31,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7779 states. [2023-12-20 14:36:31,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7779 to 7777. [2023-12-20 14:36:31,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7777 states, 7775 states have (on average 1.4468167202572346) internal successors, (11249), 7776 states have internal predecessors, (11249), 0 states have call successors, (0), 0 states 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 14:36:31,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7777 states to 7777 states and 11249 transitions. [2023-12-20 14:36:31,483 INFO L78 Accepts]: Start accepts. Automaton has 7777 states and 11249 transitions. Word has length 109 [2023-12-20 14:36:31,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:36:31,484 INFO L495 AbstractCegarLoop]: Abstraction has 7777 states and 11249 transitions. [2023-12-20 14:36:31,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 14:36:31,484 INFO L276 IsEmpty]: Start isEmpty. Operand 7777 states and 11249 transitions. [2023-12-20 14:36:31,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-20 14:36:31,485 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:36:31,485 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:36:31,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-20 14:36:31,485 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:36:31,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:36:31,485 INFO L85 PathProgramCache]: Analyzing trace with hash 479231874, now seen corresponding path program 1 times [2023-12-20 14:36:31,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:36:31,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389387952] [2023-12-20 14:36:31,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:36:31,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:36:31,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:36:31,541 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:36:31,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:36:31,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389387952] [2023-12-20 14:36:31,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389387952] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:36:31,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:36:31,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:36:31,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275077334] [2023-12-20 14:36:31,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:36:31,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:36:31,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:36:31,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:36:31,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:36:31,542 INFO L87 Difference]: Start difference. First operand 7777 states and 11249 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states 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 14:36:31,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:36:31,630 INFO L93 Difference]: Finished difference Result 10501 states and 15059 transitions. [2023-12-20 14:36:31,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:36:31,630 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2023-12-20 14:36:31,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:36:31,635 INFO L225 Difference]: With dead ends: 10501 [2023-12-20 14:36:31,635 INFO L226 Difference]: Without dead ends: 5059 [2023-12-20 14:36:31,638 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 14:36:31,638 INFO L413 NwaCegarLoop]: 1600 mSDtfsCounter, 49 mSDsluCounter, 1525 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 3125 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 14:36:31,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 3125 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:36:31,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5059 states. [2023-12-20 14:36:31,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5059 to 5057. [2023-12-20 14:36:31,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5057 states, 5055 states have (on average 1.4652818991097922) internal successors, (7407), 5056 states have internal predecessors, (7407), 0 states have call successors, (0), 0 states 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 14:36:31,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5057 states to 5057 states and 7407 transitions. [2023-12-20 14:36:31,741 INFO L78 Accepts]: Start accepts. Automaton has 5057 states and 7407 transitions. Word has length 111 [2023-12-20 14:36:31,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:36:31,742 INFO L495 AbstractCegarLoop]: Abstraction has 5057 states and 7407 transitions. [2023-12-20 14:36:31,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states 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 14:36:31,742 INFO L276 IsEmpty]: Start isEmpty. Operand 5057 states and 7407 transitions. [2023-12-20 14:36:31,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-20 14:36:31,743 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:36:31,743 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:36:31,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-20 14:36:31,743 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:36:31,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:36:31,743 INFO L85 PathProgramCache]: Analyzing trace with hash -2063566992, now seen corresponding path program 1 times [2023-12-20 14:36:31,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:36:31,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922579268] [2023-12-20 14:36:31,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:36:31,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:36:31,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:36:31,802 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:36:31,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:36:31,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922579268] [2023-12-20 14:36:31,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922579268] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:36:31,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:36:31,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:36:31,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788803623] [2023-12-20 14:36:31,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:36:31,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:36:31,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:36:31,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:36:31,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:36:31,804 INFO L87 Difference]: Start difference. First operand 5057 states and 7407 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states 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 14:36:31,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:36:31,900 INFO L93 Difference]: Finished difference Result 6421 states and 9296 transitions. [2023-12-20 14:36:31,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:36:31,900 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2023-12-20 14:36:31,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:36:31,903 INFO L225 Difference]: With dead ends: 6421 [2023-12-20 14:36:31,903 INFO L226 Difference]: Without dead ends: 3699 [2023-12-20 14:36:31,905 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 14:36:31,905 INFO L413 NwaCegarLoop]: 1593 mSDtfsCounter, 46 mSDsluCounter, 1517 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 3110 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 14:36:31,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 3110 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:36:31,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3699 states. [2023-12-20 14:36:31,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3699 to 3697. [2023-12-20 14:36:31,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3697 states, 3695 states have (on average 1.4893098782138023) internal successors, (5503), 3696 states have internal predecessors, (5503), 0 states have call successors, (0), 0 states 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 14:36:31,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3697 states to 3697 states and 5503 transitions. [2023-12-20 14:36:31,964 INFO L78 Accepts]: Start accepts. Automaton has 3697 states and 5503 transitions. Word has length 113 [2023-12-20 14:36:31,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:36:31,964 INFO L495 AbstractCegarLoop]: Abstraction has 3697 states and 5503 transitions. [2023-12-20 14:36:31,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states 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 14:36:31,965 INFO L276 IsEmpty]: Start isEmpty. Operand 3697 states and 5503 transitions. [2023-12-20 14:36:31,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-20 14:36:31,965 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:36:31,965 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:36:31,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-20 14:36:31,966 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:36:31,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:36:31,966 INFO L85 PathProgramCache]: Analyzing trace with hash 159011038, now seen corresponding path program 1 times [2023-12-20 14:36:31,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:36:31,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116402536] [2023-12-20 14:36:31,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:36:31,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:36:31,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:36:32,521 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:36:32,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:36:32,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116402536] [2023-12-20 14:36:32,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116402536] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:36:32,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199455897] [2023-12-20 14:36:32,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:36:32,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:36:32,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:36:32,552 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 14:36:32,555 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 14:36:32,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:36:32,675 INFO L262 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-20 14:36:32,679 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:36:32,814 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 14:36:32,815 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:36:32,958 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 14:36:32,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1199455897] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 14:36:32,959 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 14:36:32,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 4, 4] total 17 [2023-12-20 14:36:32,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59416942] [2023-12-20 14:36:32,959 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 14:36:32,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-20 14:36:32,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:36:32,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-20 14:36:32,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2023-12-20 14:36:32,960 INFO L87 Difference]: Start difference. First operand 3697 states and 5503 transitions. Second operand has 17 states, 17 states have (on average 19.470588235294116) internal successors, (331), 17 states have internal predecessors, (331), 0 states have call successors, (0), 0 states 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 14:36:34,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:36:34,908 INFO L93 Difference]: Finished difference Result 14950 states and 20769 transitions. [2023-12-20 14:36:34,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-20 14:36:34,909 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 19.470588235294116) internal successors, (331), 17 states have internal predecessors, (331), 0 states have call successors, (0), 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 115 [2023-12-20 14:36:34,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:36:34,921 INFO L225 Difference]: With dead ends: 14950 [2023-12-20 14:36:34,921 INFO L226 Difference]: Without dead ends: 13588 [2023-12-20 14:36:34,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1091 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=720, Invalid=3062, Unknown=0, NotChecked=0, Total=3782 [2023-12-20 14:36:34,924 INFO L413 NwaCegarLoop]: 1542 mSDtfsCounter, 18311 mSDsluCounter, 5054 mSDsCounter, 0 mSdLazyCounter, 930 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18311 SdHoareTripleChecker+Valid, 6596 SdHoareTripleChecker+Invalid, 984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 14:36:34,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18311 Valid, 6596 Invalid, 984 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 930 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 14:36:34,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13588 states. [2023-12-20 14:36:35,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13588 to 13200. [2023-12-20 14:36:35,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13200 states, 13198 states have (on average 1.3649795423549023) internal successors, (18015), 13199 states have internal predecessors, (18015), 0 states have call successors, (0), 0 states 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 14:36:35,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13200 states to 13200 states and 18015 transitions. [2023-12-20 14:36:35,269 INFO L78 Accepts]: Start accepts. Automaton has 13200 states and 18015 transitions. Word has length 115 [2023-12-20 14:36:35,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:36:35,269 INFO L495 AbstractCegarLoop]: Abstraction has 13200 states and 18015 transitions. [2023-12-20 14:36:35,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 19.470588235294116) internal successors, (331), 17 states have internal predecessors, (331), 0 states have call successors, (0), 0 states 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 14:36:35,269 INFO L276 IsEmpty]: Start isEmpty. Operand 13200 states and 18015 transitions. [2023-12-20 14:36:35,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-20 14:36:35,270 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:36:35,271 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:36:35,277 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-20 14:36:35,476 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,SelfDestructingSolverStorable28 [2023-12-20 14:36:35,477 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:36:35,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:36:35,477 INFO L85 PathProgramCache]: Analyzing trace with hash 700168423, now seen corresponding path program 1 times [2023-12-20 14:36:35,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:36:35,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922740236] [2023-12-20 14:36:35,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:36:35,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:36:35,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:36:36,007 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:36:36,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:36:36,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922740236] [2023-12-20 14:36:36,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922740236] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:36:36,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1695996477] [2023-12-20 14:36:36,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:36:36,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:36:36,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:36:36,025 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 14:36:36,049 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 14:36:36,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:36:36,173 INFO L262 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-20 14:36:36,176 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:36:36,670 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:36:36,671 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:36:37,305 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:36:37,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1695996477] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 14:36:37,306 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 14:36:37,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 27 [2023-12-20 14:36:37,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250353439] [2023-12-20 14:36:37,306 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 14:36:37,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-20 14:36:37,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:36:37,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-20 14:36:37,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=650, Unknown=0, NotChecked=0, Total=756 [2023-12-20 14:36:37,308 INFO L87 Difference]: Start difference. First operand 13200 states and 18015 transitions. Second operand has 28 states, 28 states have (on average 11.285714285714286) internal successors, (316), 27 states have internal predecessors, (316), 0 states have call successors, (0), 0 states 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 14:36:39,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:36:39,490 INFO L93 Difference]: Finished difference Result 43546 states and 58393 transitions. [2023-12-20 14:36:39,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-12-20 14:36:39,491 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 11.285714285714286) internal successors, (316), 27 states have internal predecessors, (316), 0 states have call successors, (0), 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 116 [2023-12-20 14:36:39,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:36:39,526 INFO L225 Difference]: With dead ends: 43546 [2023-12-20 14:36:39,526 INFO L226 Difference]: Without dead ends: 32801 [2023-12-20 14:36:39,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1115 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=926, Invalid=3904, Unknown=0, NotChecked=0, Total=4830 [2023-12-20 14:36:39,540 INFO L413 NwaCegarLoop]: 1543 mSDtfsCounter, 22085 mSDsluCounter, 8510 mSDsCounter, 0 mSdLazyCounter, 1326 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22085 SdHoareTripleChecker+Valid, 10053 SdHoareTripleChecker+Invalid, 1363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 14:36:39,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22085 Valid, 10053 Invalid, 1363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1326 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 14:36:39,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32801 states. [2023-12-20 14:36:40,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32801 to 24411. [2023-12-20 14:36:40,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24411 states, 24409 states have (on average 1.331762874349625) internal successors, (32507), 24410 states have internal predecessors, (32507), 0 states have call successors, (0), 0 states 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 14:36:40,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24411 states to 24411 states and 32507 transitions. [2023-12-20 14:36:40,271 INFO L78 Accepts]: Start accepts. Automaton has 24411 states and 32507 transitions. Word has length 116 [2023-12-20 14:36:40,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:36:40,272 INFO L495 AbstractCegarLoop]: Abstraction has 24411 states and 32507 transitions. [2023-12-20 14:36:40,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 11.285714285714286) internal successors, (316), 27 states have internal predecessors, (316), 0 states have call successors, (0), 0 states 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 14:36:40,272 INFO L276 IsEmpty]: Start isEmpty. Operand 24411 states and 32507 transitions. [2023-12-20 14:36:40,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-20 14:36:40,273 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:36:40,274 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:36:40,281 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 14:36:40,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:36:40,479 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:36:40,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:36:40,480 INFO L85 PathProgramCache]: Analyzing trace with hash -514489291, now seen corresponding path program 1 times [2023-12-20 14:36:40,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:36:40,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456088930] [2023-12-20 14:36:40,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:36:40,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:36:40,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:36:40,739 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:36:40,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:36:40,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456088930] [2023-12-20 14:36:40,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456088930] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:36:40,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1087529214] [2023-12-20 14:36:40,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:36:40,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:36:40,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:36:40,740 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 14:36:40,770 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 14:36:40,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:36:40,863 INFO L262 TraceCheckSpWp]: Trace formula consists of 542 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 14:36:40,869 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:36:41,254 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:36:41,255 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:36:42,428 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:36:42,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1087529214] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 14:36:42,428 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 14:36:42,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 12] total 27 [2023-12-20 14:36:42,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648398847] [2023-12-20 14:36:42,429 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 14:36:42,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-20 14:36:42,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:36:42,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-20 14:36:42,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=587, Unknown=0, NotChecked=0, Total=702 [2023-12-20 14:36:42,430 INFO L87 Difference]: Start difference. First operand 24411 states and 32507 transitions. Second operand has 27 states, 27 states have (on average 11.37037037037037) internal successors, (307), 27 states have internal predecessors, (307), 0 states have call successors, (0), 0 states 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 14:36:44,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:36:44,173 INFO L93 Difference]: Finished difference Result 66435 states and 86978 transitions. [2023-12-20 14:36:44,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 14:36:44,173 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 11.37037037037037) internal successors, (307), 27 states have internal predecessors, (307), 0 states have call successors, (0), 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 116 [2023-12-20 14:36:44,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:36:44,220 INFO L225 Difference]: With dead ends: 66435 [2023-12-20 14:36:44,220 INFO L226 Difference]: Without dead ends: 45109 [2023-12-20 14:36:44,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=313, Invalid=1169, Unknown=0, NotChecked=0, Total=1482 [2023-12-20 14:36:44,241 INFO L413 NwaCegarLoop]: 1540 mSDtfsCounter, 13894 mSDsluCounter, 6709 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13894 SdHoareTripleChecker+Valid, 8249 SdHoareTripleChecker+Invalid, 734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 14:36:44,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13894 Valid, 8249 Invalid, 734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 14:36:44,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45109 states. [2023-12-20 14:36:45,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45109 to 44001. [2023-12-20 14:36:45,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44001 states, 43999 states have (on average 1.3133934862155958) internal successors, (57788), 44000 states have internal predecessors, (57788), 0 states have call successors, (0), 0 states 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 14:36:45,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44001 states to 44001 states and 57788 transitions. [2023-12-20 14:36:45,737 INFO L78 Accepts]: Start accepts. Automaton has 44001 states and 57788 transitions. Word has length 116 [2023-12-20 14:36:45,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:36:45,737 INFO L495 AbstractCegarLoop]: Abstraction has 44001 states and 57788 transitions. [2023-12-20 14:36:45,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 11.37037037037037) internal successors, (307), 27 states have internal predecessors, (307), 0 states have call successors, (0), 0 states 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 14:36:45,737 INFO L276 IsEmpty]: Start isEmpty. Operand 44001 states and 57788 transitions. [2023-12-20 14:36:45,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-20 14:36:45,738 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:36:45,739 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:36:45,764 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 14:36:45,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:36:45,945 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:36:45,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:36:45,945 INFO L85 PathProgramCache]: Analyzing trace with hash 746710716, now seen corresponding path program 1 times [2023-12-20 14:36:45,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:36:45,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505261927] [2023-12-20 14:36:45,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:36:45,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:36:45,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:36:46,182 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:36:46,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:36:46,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505261927] [2023-12-20 14:36:46,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505261927] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:36:46,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082576666] [2023-12-20 14:36:46,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:36:46,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:36:46,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:36:46,196 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 14:36:46,279 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 14:36:46,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:36:46,377 INFO L262 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-20 14:36:46,379 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:36:46,833 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:36:46,833 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:36:47,735 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:36:47,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082576666] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 14:36:47,735 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 14:36:47,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2023-12-20 14:36:47,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208499609] [2023-12-20 14:36:47,735 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 14:36:47,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-20 14:36:47,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:36:47,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-20 14:36:47,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=550, Unknown=0, NotChecked=0, Total=650 [2023-12-20 14:36:47,738 INFO L87 Difference]: Start difference. First operand 44001 states and 57788 transitions. Second operand has 26 states, 26 states have (on average 12.26923076923077) internal successors, (319), 25 states have internal predecessors, (319), 0 states have call successors, (0), 0 states 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 14:36:53,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:36:53,530 INFO L93 Difference]: Finished difference Result 213831 states and 277836 transitions. [2023-12-20 14:36:53,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-20 14:36:53,531 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 12.26923076923077) internal successors, (319), 25 states have internal predecessors, (319), 0 states have call successors, (0), 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 117 [2023-12-20 14:36:53,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:36:53,727 INFO L225 Difference]: With dead ends: 213831 [2023-12-20 14:36:53,727 INFO L226 Difference]: Without dead ends: 172721 [2023-12-20 14:36:53,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 659 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=656, Invalid=2536, Unknown=0, NotChecked=0, Total=3192 [2023-12-20 14:36:53,784 INFO L413 NwaCegarLoop]: 1570 mSDtfsCounter, 20767 mSDsluCounter, 7067 mSDsCounter, 0 mSdLazyCounter, 1474 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20767 SdHoareTripleChecker+Valid, 8637 SdHoareTripleChecker+Invalid, 1501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 14:36:53,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20767 Valid, 8637 Invalid, 1501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1474 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 14:36:53,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172721 states. [2023-12-20 14:36:59,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172721 to 165305. [2023-12-20 14:36:59,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165305 states, 165303 states have (on average 1.276443863692734) internal successors, (211000), 165304 states have internal predecessors, (211000), 0 states have call successors, (0), 0 states 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 14:37:00,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165305 states to 165305 states and 211000 transitions. [2023-12-20 14:37:00,300 INFO L78 Accepts]: Start accepts. Automaton has 165305 states and 211000 transitions. Word has length 117 [2023-12-20 14:37:00,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:37:00,300 INFO L495 AbstractCegarLoop]: Abstraction has 165305 states and 211000 transitions. [2023-12-20 14:37:00,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 12.26923076923077) internal successors, (319), 25 states have internal predecessors, (319), 0 states have call successors, (0), 0 states 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 14:37:00,300 INFO L276 IsEmpty]: Start isEmpty. Operand 165305 states and 211000 transitions. [2023-12-20 14:37:00,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-20 14:37:00,303 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:37:00,303 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:37:00,314 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 14:37:00,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:37:00,510 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:37:00,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:37:00,510 INFO L85 PathProgramCache]: Analyzing trace with hash -597685687, now seen corresponding path program 1 times [2023-12-20 14:37:00,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:37:00,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324024245] [2023-12-20 14:37:00,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:37:00,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:37:00,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:37:00,770 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:37:00,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:37:00,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324024245] [2023-12-20 14:37:00,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324024245] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:37:00,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616741351] [2023-12-20 14:37:00,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:37:00,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:37:00,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:37:00,772 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 14:37:00,773 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 14:37:00,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:37:00,940 INFO L262 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 14:37:00,943 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:37:01,818 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:37:01,818 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:37:02,894 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:37:02,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1616741351] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 14:37:02,894 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 14:37:02,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 28 [2023-12-20 14:37:02,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27630168] [2023-12-20 14:37:02,894 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 14:37:02,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-20 14:37:02,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:37:02,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-20 14:37:02,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=617, Unknown=0, NotChecked=0, Total=756 [2023-12-20 14:37:02,896 INFO L87 Difference]: Start difference. First operand 165305 states and 211000 transitions. Second operand has 28 states, 28 states have (on average 11.75) internal successors, (329), 28 states have internal predecessors, (329), 0 states have call successors, (0), 0 states 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 14:37:13,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:37:13,492 INFO L93 Difference]: Finished difference Result 492562 states and 626355 transitions. [2023-12-20 14:37:13,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-20 14:37:13,493 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 11.75) internal successors, (329), 28 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2023-12-20 14:37:13,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:37:14,191 INFO L225 Difference]: With dead ends: 492562 [2023-12-20 14:37:14,191 INFO L226 Difference]: Without dead ends: 349792 [2023-12-20 14:37:14,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 400 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=428, Invalid=1378, Unknown=0, NotChecked=0, Total=1806 [2023-12-20 14:37:14,360 INFO L413 NwaCegarLoop]: 1550 mSDtfsCounter, 13806 mSDsluCounter, 5189 mSDsCounter, 0 mSdLazyCounter, 742 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13806 SdHoareTripleChecker+Valid, 6739 SdHoareTripleChecker+Invalid, 766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 14:37:14,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13806 Valid, 6739 Invalid, 766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 742 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 14:37:14,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349792 states.