/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.6.ufo.BOUNDED-12.pals+Problem12_label04.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 14:10:44,494 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 14:10:44,563 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 14:10:44,567 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 14:10:44,568 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 14:10:44,589 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 14:10:44,589 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 14:10:44,589 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 14:10:44,590 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 14:10:44,592 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 14:10:44,593 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 14:10:44,593 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 14:10:44,594 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 14:10:44,594 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 14:10:44,595 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 14:10:44,595 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 14:10:44,595 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 14:10:44,595 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 14:10:44,595 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 14:10:44,595 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 14:10:44,595 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 14:10:44,596 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 14:10:44,596 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 14:10:44,596 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 14:10:44,596 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 14:10:44,596 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 14:10:44,596 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 14:10:44,597 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 14:10:44,597 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 14:10:44,597 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 14:10:44,598 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 14:10:44,598 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 14:10:44,598 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 14:10:44,598 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 14:10:44,598 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 14:10:44,598 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 14:10:44,599 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 14:10:44,599 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 14:10:44,599 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 14:10:44,599 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 14:10:44,599 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 14:10:44,599 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 14:10:44,599 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 14:10:44,599 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 14:10:44,778 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 14:10:44,804 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 14:10:44,806 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 14:10:44,806 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 14:10:44,807 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 14:10:44,808 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label04.c [2023-12-20 14:10:46,018 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 14:10:46,363 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 14:10:46,364 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label04.c [2023-12-20 14:10:46,391 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d9aa18a1/e8efdd6bea754b47a462cb54c4536ff9/FLAGb531899e6 [2023-12-20 14:10:46,402 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d9aa18a1/e8efdd6bea754b47a462cb54c4536ff9 [2023-12-20 14:10:46,404 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 14:10:46,405 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 14:10:46,407 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 14:10:46,407 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 14:10:46,411 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 14:10:46,411 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 02:10:46" (1/1) ... [2023-12-20 14:10:46,412 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ffc98d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:10:46, skipping insertion in model container [2023-12-20 14:10:46,412 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 02:10:46" (1/1) ... [2023-12-20 14:10:46,502 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 14:10:46,818 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.6.ufo.BOUNDED-12.pals+Problem12_label04.c[15482,15495] [2023-12-20 14:10:46,890 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.6.ufo.BOUNDED-12.pals+Problem12_label04.c[22543,22556] [2023-12-20 14:10:47,408 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 14:10:47,417 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 14:10:47,447 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.6.ufo.BOUNDED-12.pals+Problem12_label04.c[15482,15495] [2023-12-20 14:10:47,455 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.6.ufo.BOUNDED-12.pals+Problem12_label04.c[22543,22556] [2023-12-20 14:10:47,735 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 14:10:47,755 INFO L206 MainTranslator]: Completed translation [2023-12-20 14:10:47,755 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:10:47 WrapperNode [2023-12-20 14:10:47,755 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 14:10:47,757 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 14:10:47,757 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 14:10:47,757 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 14:10:47,761 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:10:47" (1/1) ... [2023-12-20 14:10:47,793 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:10:47" (1/1) ... [2023-12-20 14:10:48,072 INFO L138 Inliner]: procedures = 37, calls = 23, calls flagged for inlining = 18, calls inlined = 18, statements flattened = 5153 [2023-12-20 14:10:48,073 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 14:10:48,073 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 14:10:48,074 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 14:10:48,074 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 14:10:48,084 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:10:47" (1/1) ... [2023-12-20 14:10:48,084 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:10:47" (1/1) ... [2023-12-20 14:10:48,121 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:10:47" (1/1) ... [2023-12-20 14:10:48,192 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 14:10:48,192 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:10:47" (1/1) ... [2023-12-20 14:10:48,192 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:10:47" (1/1) ... [2023-12-20 14:10:48,411 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:10:47" (1/1) ... [2023-12-20 14:10:48,464 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:10:47" (1/1) ... [2023-12-20 14:10:48,483 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:10:47" (1/1) ... [2023-12-20 14:10:48,498 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:10:47" (1/1) ... [2023-12-20 14:10:48,546 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 14:10:48,548 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 14:10:48,548 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 14:10:48,548 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 14:10:48,549 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:10:47" (1/1) ... [2023-12-20 14:10:48,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 14:10:48,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:10:48,591 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 14:10:48,610 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 14:10:48,619 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 14:10:48,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 14:10:48,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 14:10:48,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 14:10:48,701 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 14:10:48,703 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 14:10:51,748 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 14:10:51,788 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 14:10:51,788 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-20 14:10:51,788 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 02:10:51 BoogieIcfgContainer [2023-12-20 14:10:51,788 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 14:10:51,790 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 14:10:51,790 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 14:10:51,792 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 14:10:51,792 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 02:10:46" (1/3) ... [2023-12-20 14:10:51,793 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74e68406 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 02:10:51, skipping insertion in model container [2023-12-20 14:10:51,793 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:10:47" (2/3) ... [2023-12-20 14:10:51,793 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74e68406 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 02:10:51, skipping insertion in model container [2023-12-20 14:10:51,793 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 02:10:51" (3/3) ... [2023-12-20 14:10:51,794 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label04.c [2023-12-20 14:10:51,805 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 14:10:51,805 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-20 14:10:51,846 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 14:10:51,851 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;@2b58fbb3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 14:10:51,851 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-20 14:10:51,858 INFO L276 IsEmpty]: Start isEmpty. Operand has 849 states, 846 states have (on average 1.9739952718676124) internal successors, (1670), 848 states have internal predecessors, (1670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:10:51,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-20 14:10:51,863 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:10:51,864 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] [2023-12-20 14:10:51,864 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:10:51,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:10:51,926 INFO L85 PathProgramCache]: Analyzing trace with hash -713532304, now seen corresponding path program 1 times [2023-12-20 14:10:51,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:10:51,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905228252] [2023-12-20 14:10:51,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:10:51,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:10:52,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:10:52,076 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 14:10:52,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:10:52,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905228252] [2023-12-20 14:10:52,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905228252] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:10:52,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:10:52,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 14:10:52,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872250045] [2023-12-20 14:10:52,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:10:52,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 14:10:52,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:10:52,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 14:10:52,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 14:10:52,103 INFO L87 Difference]: Start difference. First operand has 849 states, 846 states have (on average 1.9739952718676124) internal successors, (1670), 848 states have internal predecessors, (1670), 0 states have call successors, (0), 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 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:10:52,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:10:52,173 INFO L93 Difference]: Finished difference Result 1654 states and 3254 transitions. [2023-12-20 14:10:52,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 14:10:52,181 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2023-12-20 14:10:52,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:10:52,193 INFO L225 Difference]: With dead ends: 1654 [2023-12-20 14:10:52,193 INFO L226 Difference]: Without dead ends: 845 [2023-12-20 14:10:52,204 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 14:10:52,206 INFO L413 NwaCegarLoop]: 1599 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1599 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:10:52,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1599 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:10:52,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2023-12-20 14:10:52,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 845. [2023-12-20 14:10:52,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 843 states have (on average 1.896797153024911) internal successors, (1599), 844 states have internal predecessors, (1599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:10:52,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 1599 transitions. [2023-12-20 14:10:52,277 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 1599 transitions. Word has length 23 [2023-12-20 14:10:52,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:10:52,277 INFO L495 AbstractCegarLoop]: Abstraction has 845 states and 1599 transitions. [2023-12-20 14:10:52,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:10:52,277 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 1599 transitions. [2023-12-20 14:10:52,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-20 14:10:52,279 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:10:52,279 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] [2023-12-20 14:10:52,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 14:10:52,279 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:10:52,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:10:52,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1892491250, now seen corresponding path program 1 times [2023-12-20 14:10:52,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:10:52,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744500147] [2023-12-20 14:10:52,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:10:52,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:10:52,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:10:52,537 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 14:10:52,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:10:52,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744500147] [2023-12-20 14:10:52,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744500147] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:10:52,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:10:52,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 14:10:52,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377442558] [2023-12-20 14:10:52,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:10:52,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 14:10:52,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:10:52,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 14:10:52,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 14:10:52,540 INFO L87 Difference]: Start difference. First operand 845 states and 1599 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:10:52,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:10:52,606 INFO L93 Difference]: Finished difference Result 895 states and 1678 transitions. [2023-12-20 14:10:52,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 14:10:52,607 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2023-12-20 14:10:52,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:10:52,610 INFO L225 Difference]: With dead ends: 895 [2023-12-20 14:10:52,610 INFO L226 Difference]: Without dead ends: 845 [2023-12-20 14:10:52,610 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 14:10:52,611 INFO L413 NwaCegarLoop]: 1596 mSDtfsCounter, 0 mSDsluCounter, 3148 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4744 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:10:52,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4744 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:10:52,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2023-12-20 14:10:52,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 845. [2023-12-20 14:10:52,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 843 states have (on average 1.849347568208778) internal successors, (1559), 844 states have internal predecessors, (1559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:10:52,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 1559 transitions. [2023-12-20 14:10:52,622 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 1559 transitions. Word has length 23 [2023-12-20 14:10:52,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:10:52,622 INFO L495 AbstractCegarLoop]: Abstraction has 845 states and 1559 transitions. [2023-12-20 14:10:52,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:10:52,622 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 1559 transitions. [2023-12-20 14:10:52,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-20 14:10:52,623 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:10:52,623 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] [2023-12-20 14:10:52,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 14:10:52,624 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:10:52,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:10:52,624 INFO L85 PathProgramCache]: Analyzing trace with hash 902394301, now seen corresponding path program 1 times [2023-12-20 14:10:52,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:10:52,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244281992] [2023-12-20 14:10:52,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:10:52,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:10:52,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:10:52,689 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 14:10:52,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:10:52,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244281992] [2023-12-20 14:10:52,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244281992] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:10:52,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:10:52,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 14:10:52,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987320204] [2023-12-20 14:10:52,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:10:52,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:10:52,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:10:52,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:10:52,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:10:52,691 INFO L87 Difference]: Start difference. First operand 845 states and 1559 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:10:55,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:10:55,640 INFO L93 Difference]: Finished difference Result 2349 states and 4432 transitions. [2023-12-20 14:10:55,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:10:55,641 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2023-12-20 14:10:55,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:10:55,646 INFO L225 Difference]: With dead ends: 2349 [2023-12-20 14:10:55,647 INFO L226 Difference]: Without dead ends: 1596 [2023-12-20 14:10:55,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:10:55,650 INFO L413 NwaCegarLoop]: 585 mSDtfsCounter, 861 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2264 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 861 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 2916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 2264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-20 14:10:55,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [861 Valid, 592 Invalid, 2916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 2264 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-20 14:10:55,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1596 states. [2023-12-20 14:10:55,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1596 to 1596. [2023-12-20 14:10:55,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1596 states, 1594 states have (on average 1.5922208281053953) internal successors, (2538), 1595 states have internal predecessors, (2538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:10:55,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1596 states to 1596 states and 2538 transitions. [2023-12-20 14:10:55,753 INFO L78 Accepts]: Start accepts. Automaton has 1596 states and 2538 transitions. Word has length 60 [2023-12-20 14:10:55,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:10:55,753 INFO L495 AbstractCegarLoop]: Abstraction has 1596 states and 2538 transitions. [2023-12-20 14:10:55,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:10:55,754 INFO L276 IsEmpty]: Start isEmpty. Operand 1596 states and 2538 transitions. [2023-12-20 14:10:55,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-20 14:10:55,755 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:10:55,755 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:10:55,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 14:10:55,756 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:10:55,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:10:55,756 INFO L85 PathProgramCache]: Analyzing trace with hash -808348940, now seen corresponding path program 1 times [2023-12-20 14:10:55,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:10:55,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107199409] [2023-12-20 14:10:55,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:10:55,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:10:55,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:10:55,943 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 14:10:55,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:10:55,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107199409] [2023-12-20 14:10:55,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107199409] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:10:55,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:10:55,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 14:10:55,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558720922] [2023-12-20 14:10:55,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:10:55,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 14:10:55,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:10:55,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 14:10:55,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-20 14:10:55,945 INFO L87 Difference]: Start difference. First operand 1596 states and 2538 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:10:56,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:10:56,204 INFO L93 Difference]: Finished difference Result 2160 states and 3450 transitions. [2023-12-20 14:10:56,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-20 14:10:56,205 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-12-20 14:10:56,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:10:56,211 INFO L225 Difference]: With dead ends: 2160 [2023-12-20 14:10:56,211 INFO L226 Difference]: Without dead ends: 2113 [2023-12-20 14:10:56,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2023-12-20 14:10:56,213 INFO L413 NwaCegarLoop]: 1552 mSDtfsCounter, 9675 mSDsluCounter, 2072 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9675 SdHoareTripleChecker+Valid, 3624 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:10:56,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9675 Valid, 3624 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 14:10:56,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2113 states. [2023-12-20 14:10:56,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2113 to 1641. [2023-12-20 14:10:56,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1641 states, 1639 states have (on average 1.5930445393532642) internal successors, (2611), 1640 states have internal predecessors, (2611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:10:56,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1641 states to 1641 states and 2611 transitions. [2023-12-20 14:10:56,240 INFO L78 Accepts]: Start accepts. Automaton has 1641 states and 2611 transitions. Word has length 62 [2023-12-20 14:10:56,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:10:56,240 INFO L495 AbstractCegarLoop]: Abstraction has 1641 states and 2611 transitions. [2023-12-20 14:10:56,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:10:56,240 INFO L276 IsEmpty]: Start isEmpty. Operand 1641 states and 2611 transitions. [2023-12-20 14:10:56,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-20 14:10:56,242 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:10:56,242 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] [2023-12-20 14:10:56,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 14:10:56,242 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:10:56,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:10:56,242 INFO L85 PathProgramCache]: Analyzing trace with hash 431995268, now seen corresponding path program 1 times [2023-12-20 14:10:56,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:10:56,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643746913] [2023-12-20 14:10:56,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:10:56,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:10:56,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:10:56,287 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 14:10:56,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:10:56,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643746913] [2023-12-20 14:10:56,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643746913] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:10:56,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:10:56,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:10:56,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320739949] [2023-12-20 14:10:56,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:10:56,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:10:56,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:10:56,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:10:56,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:10:56,289 INFO L87 Difference]: Start difference. First operand 1641 states and 2611 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:10:56,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:10:56,315 INFO L93 Difference]: Finished difference Result 1814 states and 2890 transitions. [2023-12-20 14:10:56,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:10:56,316 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2023-12-20 14:10:56,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:10:56,320 INFO L225 Difference]: With dead ends: 1814 [2023-12-20 14:10:56,320 INFO L226 Difference]: Without dead ends: 1722 [2023-12-20 14:10:56,321 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 14:10:56,321 INFO L413 NwaCegarLoop]: 1554 mSDtfsCounter, 1488 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1488 SdHoareTripleChecker+Valid, 1624 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:10:56,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1488 Valid, 1624 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:10:56,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1722 states. [2023-12-20 14:10:56,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1722 to 1720. [2023-12-20 14:10:56,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1720 states, 1718 states have (on average 1.5931315483119908) internal successors, (2737), 1719 states have internal predecessors, (2737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:10:56,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1720 states to 1720 states and 2737 transitions. [2023-12-20 14:10:56,347 INFO L78 Accepts]: Start accepts. Automaton has 1720 states and 2737 transitions. Word has length 64 [2023-12-20 14:10:56,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:10:56,347 INFO L495 AbstractCegarLoop]: Abstraction has 1720 states and 2737 transitions. [2023-12-20 14:10:56,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:10:56,347 INFO L276 IsEmpty]: Start isEmpty. Operand 1720 states and 2737 transitions. [2023-12-20 14:10:56,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-20 14:10:56,348 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:10:56,348 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] [2023-12-20 14:10:56,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 14:10:56,349 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:10:56,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:10:56,349 INFO L85 PathProgramCache]: Analyzing trace with hash 434140220, now seen corresponding path program 1 times [2023-12-20 14:10:56,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:10:56,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687497705] [2023-12-20 14:10:56,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:10:56,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:10:56,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:10:56,542 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 14:10:56,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:10:56,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687497705] [2023-12-20 14:10:56,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687497705] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:10:56,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:10:56,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 14:10:56,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382489029] [2023-12-20 14:10:56,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:10:56,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 14:10:56,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:10:56,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 14:10:56,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-20 14:10:56,544 INFO L87 Difference]: Start difference. First operand 1720 states and 2737 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:10:56,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:10:56,725 INFO L93 Difference]: Finished difference Result 1893 states and 3013 transitions. [2023-12-20 14:10:56,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 14:10:56,726 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2023-12-20 14:10:56,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:10:56,730 INFO L225 Difference]: With dead ends: 1893 [2023-12-20 14:10:56,730 INFO L226 Difference]: Without dead ends: 1722 [2023-12-20 14:10:56,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2023-12-20 14:10:56,731 INFO L413 NwaCegarLoop]: 1548 mSDtfsCounter, 1530 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1530 SdHoareTripleChecker+Valid, 1983 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:10:56,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1530 Valid, 1983 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 14:10:56,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1722 states. [2023-12-20 14:10:56,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1722 to 1720. [2023-12-20 14:10:56,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1720 states, 1718 states have (on average 1.5919674039580909) internal successors, (2735), 1719 states have internal predecessors, (2735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:10:56,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1720 states to 1720 states and 2735 transitions. [2023-12-20 14:10:56,757 INFO L78 Accepts]: Start accepts. Automaton has 1720 states and 2735 transitions. Word has length 64 [2023-12-20 14:10:56,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:10:56,758 INFO L495 AbstractCegarLoop]: Abstraction has 1720 states and 2735 transitions. [2023-12-20 14:10:56,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:10:56,758 INFO L276 IsEmpty]: Start isEmpty. Operand 1720 states and 2735 transitions. [2023-12-20 14:10:56,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-20 14:10:56,759 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:10:56,759 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:10:56,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 14:10:56,759 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:10:56,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:10:56,759 INFO L85 PathProgramCache]: Analyzing trace with hash 444744363, now seen corresponding path program 1 times [2023-12-20 14:10:56,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:10:56,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131118168] [2023-12-20 14:10:56,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:10:56,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:10:56,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:10:56,864 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 14:10:56,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:10:56,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131118168] [2023-12-20 14:10:56,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131118168] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:10:56,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:10:56,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 14:10:56,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436989539] [2023-12-20 14:10:56,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:10:56,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 14:10:56,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:10:56,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 14:10:56,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 14:10:56,866 INFO L87 Difference]: Start difference. First operand 1720 states and 2735 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:10:56,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:10:56,897 INFO L93 Difference]: Finished difference Result 1728 states and 2744 transitions. [2023-12-20 14:10:56,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 14:10:56,898 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2023-12-20 14:10:56,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:10:56,903 INFO L225 Difference]: With dead ends: 1728 [2023-12-20 14:10:56,903 INFO L226 Difference]: Without dead ends: 1726 [2023-12-20 14:10:56,903 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 14:10:56,903 INFO L413 NwaCegarLoop]: 1555 mSDtfsCounter, 1 mSDsluCounter, 3102 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4657 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 14:10:56,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4657 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:10:56,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1726 states. [2023-12-20 14:10:56,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1726 to 1724. [2023-12-20 14:10:56,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1724 states, 1722 states have (on average 1.5900116144018583) internal successors, (2738), 1723 states have internal predecessors, (2738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:10:56,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1724 states to 1724 states and 2738 transitions. [2023-12-20 14:10:56,927 INFO L78 Accepts]: Start accepts. Automaton has 1724 states and 2738 transitions. Word has length 65 [2023-12-20 14:10:56,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:10:56,927 INFO L495 AbstractCegarLoop]: Abstraction has 1724 states and 2738 transitions. [2023-12-20 14:10:56,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:10:56,928 INFO L276 IsEmpty]: Start isEmpty. Operand 1724 states and 2738 transitions. [2023-12-20 14:10:56,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-20 14:10:56,928 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:10:56,928 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] [2023-12-20 14:10:56,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 14:10:56,929 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:10:56,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:10:56,929 INFO L85 PathProgramCache]: Analyzing trace with hash 239452988, now seen corresponding path program 1 times [2023-12-20 14:10:56,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:10:56,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840774148] [2023-12-20 14:10:56,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:10:56,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:10:56,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:10:56,962 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 14:10:56,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:10:56,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840774148] [2023-12-20 14:10:56,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840774148] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:10:56,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:10:56,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:10:56,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876494244] [2023-12-20 14:10:56,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:10:56,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:10:56,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:10:56,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:10:56,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:10:56,964 INFO L87 Difference]: Start difference. First operand 1724 states and 2738 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:10:56,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:10:56,989 INFO L93 Difference]: Finished difference Result 1910 states and 3031 transitions. [2023-12-20 14:10:56,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:10:56,989 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-12-20 14:10:56,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:10:56,994 INFO L225 Difference]: With dead ends: 1910 [2023-12-20 14:10:56,995 INFO L226 Difference]: Without dead ends: 1814 [2023-12-20 14:10:56,995 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 14:10:56,996 INFO L413 NwaCegarLoop]: 1616 mSDtfsCounter, 1504 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1504 SdHoareTripleChecker+Valid, 1692 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 14:10:56,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1504 Valid, 1692 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:10:56,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1814 states. [2023-12-20 14:10:57,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1814 to 1812. [2023-12-20 14:10:57,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1812 states, 1810 states have (on average 1.5883977900552486) internal successors, (2875), 1811 states have internal predecessors, (2875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:10:57,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1812 states to 1812 states and 2875 transitions. [2023-12-20 14:10:57,027 INFO L78 Accepts]: Start accepts. Automaton has 1812 states and 2875 transitions. Word has length 66 [2023-12-20 14:10:57,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:10:57,027 INFO L495 AbstractCegarLoop]: Abstraction has 1812 states and 2875 transitions. [2023-12-20 14:10:57,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:10:57,028 INFO L276 IsEmpty]: Start isEmpty. Operand 1812 states and 2875 transitions. [2023-12-20 14:10:57,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-20 14:10:57,028 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:10:57,028 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] [2023-12-20 14:10:57,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 14:10:57,029 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:10:57,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:10:57,029 INFO L85 PathProgramCache]: Analyzing trace with hash -170933700, now seen corresponding path program 1 times [2023-12-20 14:10:57,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:10:57,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274560675] [2023-12-20 14:10:57,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:10:57,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:10:57,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:10:57,072 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 14:10:57,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:10:57,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274560675] [2023-12-20 14:10:57,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274560675] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:10:57,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:10:57,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:10:57,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410842942] [2023-12-20 14:10:57,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:10:57,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:10:57,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:10:57,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:10:57,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:10:57,075 INFO L87 Difference]: Start difference. First operand 1812 states and 2875 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:10:57,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:10:57,103 INFO L93 Difference]: Finished difference Result 2310 states and 3655 transitions. [2023-12-20 14:10:57,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:10:57,104 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-12-20 14:10:57,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:10:57,110 INFO L225 Difference]: With dead ends: 2310 [2023-12-20 14:10:57,111 INFO L226 Difference]: Without dead ends: 2049 [2023-12-20 14:10:57,112 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 14:10:57,115 INFO L413 NwaCegarLoop]: 1618 mSDtfsCounter, 1502 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1502 SdHoareTripleChecker+Valid, 1698 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 14:10:57,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1502 Valid, 1698 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:10:57,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2049 states. [2023-12-20 14:10:57,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2049 to 2047. [2023-12-20 14:10:57,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2047 states, 2045 states have (on average 1.5828850855745722) internal successors, (3237), 2046 states have internal predecessors, (3237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:10:57,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2047 states to 2047 states and 3237 transitions. [2023-12-20 14:10:57,198 INFO L78 Accepts]: Start accepts. Automaton has 2047 states and 3237 transitions. Word has length 66 [2023-12-20 14:10:57,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:10:57,198 INFO L495 AbstractCegarLoop]: Abstraction has 2047 states and 3237 transitions. [2023-12-20 14:10:57,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:10:57,199 INFO L276 IsEmpty]: Start isEmpty. Operand 2047 states and 3237 transitions. [2023-12-20 14:10:57,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-20 14:10:57,199 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:10:57,199 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] [2023-12-20 14:10:57,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 14:10:57,199 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:10:57,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:10:57,200 INFO L85 PathProgramCache]: Analyzing trace with hash -399572932, now seen corresponding path program 1 times [2023-12-20 14:10:57,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:10:57,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110711929] [2023-12-20 14:10:57,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:10:57,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:10:57,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:10:57,246 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 14:10:57,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:10:57,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110711929] [2023-12-20 14:10:57,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110711929] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:10:57,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:10:57,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:10:57,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723040977] [2023-12-20 14:10:57,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:10:57,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:10:57,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:10:57,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:10:57,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:10:57,248 INFO L87 Difference]: Start difference. First operand 2047 states and 3237 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:10:57,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:10:57,284 INFO L93 Difference]: Finished difference Result 2991 states and 4699 transitions. [2023-12-20 14:10:57,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:10:57,285 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-12-20 14:10:57,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:10:57,291 INFO L225 Difference]: With dead ends: 2991 [2023-12-20 14:10:57,291 INFO L226 Difference]: Without dead ends: 2495 [2023-12-20 14:10:57,292 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 14:10:57,293 INFO L413 NwaCegarLoop]: 1606 mSDtfsCounter, 1498 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1498 SdHoareTripleChecker+Valid, 1694 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 14:10:57,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1498 Valid, 1694 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:10:57,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2495 states. [2023-12-20 14:10:57,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2495 to 2493. [2023-12-20 14:10:57,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2493 states, 2491 states have (on average 1.5708550782818145) internal successors, (3913), 2492 states have internal predecessors, (3913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:10:57,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2493 states to 2493 states and 3913 transitions. [2023-12-20 14:10:57,344 INFO L78 Accepts]: Start accepts. Automaton has 2493 states and 3913 transitions. Word has length 66 [2023-12-20 14:10:57,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:10:57,344 INFO L495 AbstractCegarLoop]: Abstraction has 2493 states and 3913 transitions. [2023-12-20 14:10:57,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:10:57,344 INFO L276 IsEmpty]: Start isEmpty. Operand 2493 states and 3913 transitions. [2023-12-20 14:10:57,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-20 14:10:57,345 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:10:57,345 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] [2023-12-20 14:10:57,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 14:10:57,345 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:10:57,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:10:57,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1025228996, now seen corresponding path program 1 times [2023-12-20 14:10:57,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:10:57,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845188300] [2023-12-20 14:10:57,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:10:57,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:10:57,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:10:57,386 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 14:10:57,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:10:57,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845188300] [2023-12-20 14:10:57,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845188300] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:10:57,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:10:57,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:10:57,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611445747] [2023-12-20 14:10:57,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:10:57,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:10:57,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:10:57,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:10:57,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:10:57,388 INFO L87 Difference]: Start difference. First operand 2493 states and 3913 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:10:57,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:10:57,437 INFO L93 Difference]: Finished difference Result 4281 states and 6643 transitions. [2023-12-20 14:10:57,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:10:57,438 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-12-20 14:10:57,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:10:57,446 INFO L225 Difference]: With dead ends: 4281 [2023-12-20 14:10:57,446 INFO L226 Difference]: Without dead ends: 3339 [2023-12-20 14:10:57,448 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 14:10:57,448 INFO L413 NwaCegarLoop]: 1604 mSDtfsCounter, 1496 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1496 SdHoareTripleChecker+Valid, 1696 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 14:10:57,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1496 Valid, 1696 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:10:57,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3339 states. [2023-12-20 14:10:57,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3339 to 3337. [2023-12-20 14:10:57,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3337 states, 3335 states have (on average 1.5499250374812594) internal successors, (5169), 3336 states have internal predecessors, (5169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:10:57,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3337 states to 3337 states and 5169 transitions. [2023-12-20 14:10:57,514 INFO L78 Accepts]: Start accepts. Automaton has 3337 states and 5169 transitions. Word has length 66 [2023-12-20 14:10:57,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:10:57,514 INFO L495 AbstractCegarLoop]: Abstraction has 3337 states and 5169 transitions. [2023-12-20 14:10:57,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:10:57,515 INFO L276 IsEmpty]: Start isEmpty. Operand 3337 states and 5169 transitions. [2023-12-20 14:10:57,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-20 14:10:57,528 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:10:57,528 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] [2023-12-20 14:10:57,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 14:10:57,528 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:10:57,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:10:57,528 INFO L85 PathProgramCache]: Analyzing trace with hash -136495556, now seen corresponding path program 1 times [2023-12-20 14:10:57,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:10:57,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449230887] [2023-12-20 14:10:57,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:10:57,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:10:57,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:10:57,566 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 14:10:57,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:10:57,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449230887] [2023-12-20 14:10:57,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449230887] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:10:57,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:10:57,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:10:57,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570152493] [2023-12-20 14:10:57,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:10:57,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:10:57,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:10:57,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:10:57,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:10:57,568 INFO L87 Difference]: Start difference. First operand 3337 states and 5169 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:10:57,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:10:57,642 INFO L93 Difference]: Finished difference Result 6717 states and 10243 transitions. [2023-12-20 14:10:57,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:10:57,643 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-12-20 14:10:57,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:10:57,666 INFO L225 Difference]: With dead ends: 6717 [2023-12-20 14:10:57,666 INFO L226 Difference]: Without dead ends: 4931 [2023-12-20 14:10:57,670 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 14:10:57,670 INFO L413 NwaCegarLoop]: 1602 mSDtfsCounter, 1494 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1494 SdHoareTripleChecker+Valid, 1698 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 14:10:57,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1494 Valid, 1698 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:10:57,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4931 states. [2023-12-20 14:10:57,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4931 to 4929. [2023-12-20 14:10:57,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4929 states, 4927 states have (on average 1.519991881469454) internal successors, (7489), 4928 states have internal predecessors, (7489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:10:57,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4929 states to 4929 states and 7489 transitions. [2023-12-20 14:10:57,795 INFO L78 Accepts]: Start accepts. Automaton has 4929 states and 7489 transitions. Word has length 66 [2023-12-20 14:10:57,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:10:57,796 INFO L495 AbstractCegarLoop]: Abstraction has 4929 states and 7489 transitions. [2023-12-20 14:10:57,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:10:57,796 INFO L276 IsEmpty]: Start isEmpty. Operand 4929 states and 7489 transitions. [2023-12-20 14:10:57,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-20 14:10:57,796 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:10:57,797 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] [2023-12-20 14:10:57,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 14:10:57,797 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:10:57,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:10:57,797 INFO L85 PathProgramCache]: Analyzing trace with hash -439516868, now seen corresponding path program 1 times [2023-12-20 14:10:57,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:10:57,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201753536] [2023-12-20 14:10:57,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:10:57,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:10:57,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:10:57,832 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 14:10:57,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:10:57,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201753536] [2023-12-20 14:10:57,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201753536] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:10:57,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:10:57,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:10:57,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707092144] [2023-12-20 14:10:57,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:10:57,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:10:57,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:10:57,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:10:57,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:10:57,834 INFO L87 Difference]: Start difference. First operand 4929 states and 7489 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:10:57,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:10:57,969 INFO L93 Difference]: Finished difference Result 11301 states and 16867 transitions. [2023-12-20 14:10:57,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:10:57,970 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-12-20 14:10:57,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:10:57,982 INFO L225 Difference]: With dead ends: 11301 [2023-12-20 14:10:57,982 INFO L226 Difference]: Without dead ends: 7923 [2023-12-20 14:10:57,987 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 14:10:57,987 INFO L413 NwaCegarLoop]: 1616 mSDtfsCounter, 1500 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1500 SdHoareTripleChecker+Valid, 1700 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 14:10:57,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1500 Valid, 1700 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:10:57,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7923 states. [2023-12-20 14:10:58,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7923 to 7921. [2023-12-20 14:10:58,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7921 states, 7919 states have (on average 1.4831418108347014) internal successors, (11745), 7920 states have internal predecessors, (11745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:10:58,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7921 states to 7921 states and 11745 transitions. [2023-12-20 14:10:58,300 INFO L78 Accepts]: Start accepts. Automaton has 7921 states and 11745 transitions. Word has length 66 [2023-12-20 14:10:58,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:10:58,300 INFO L495 AbstractCegarLoop]: Abstraction has 7921 states and 11745 transitions. [2023-12-20 14:10:58,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:10:58,300 INFO L276 IsEmpty]: Start isEmpty. Operand 7921 states and 11745 transitions. [2023-12-20 14:10:58,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-20 14:10:58,302 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:10:58,302 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] [2023-12-20 14:10:58,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 14:10:58,302 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:10:58,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:10:58,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1981614661, now seen corresponding path program 1 times [2023-12-20 14:10:58,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:10:58,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172618244] [2023-12-20 14:10:58,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:10:58,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:10:58,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:10:58,428 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 14:10:58,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:10:58,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172618244] [2023-12-20 14:10:58,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172618244] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:10:58,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:10:58,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 14:10:58,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253610042] [2023-12-20 14:10:58,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:10:58,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 14:10:58,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:10:58,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 14:10:58,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-20 14:10:58,429 INFO L87 Difference]: Start difference. First operand 7921 states and 11745 transitions. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:10:59,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:10:59,062 INFO L93 Difference]: Finished difference Result 45567 states and 66568 transitions. [2023-12-20 14:10:59,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 14:10:59,062 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2023-12-20 14:10:59,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:10:59,124 INFO L225 Difference]: With dead ends: 45567 [2023-12-20 14:10:59,124 INFO L226 Difference]: Without dead ends: 41085 [2023-12-20 14:10:59,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-20 14:10:59,143 INFO L413 NwaCegarLoop]: 1628 mSDtfsCounter, 8059 mSDsluCounter, 2361 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8059 SdHoareTripleChecker+Valid, 3989 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:10:59,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8059 Valid, 3989 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 14:10:59,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41085 states. [2023-12-20 14:10:59,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41085 to 13361. [2023-12-20 14:10:59,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13361 states, 13359 states have (on average 1.4660528482670858) internal successors, (19585), 13360 states have internal predecessors, (19585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:10:59,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13361 states to 13361 states and 19585 transitions. [2023-12-20 14:10:59,745 INFO L78 Accepts]: Start accepts. Automaton has 13361 states and 19585 transitions. Word has length 86 [2023-12-20 14:10:59,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:10:59,746 INFO L495 AbstractCegarLoop]: Abstraction has 13361 states and 19585 transitions. [2023-12-20 14:10:59,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:10:59,746 INFO L276 IsEmpty]: Start isEmpty. Operand 13361 states and 19585 transitions. [2023-12-20 14:10:59,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-20 14:10:59,748 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:10:59,748 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] [2023-12-20 14:10:59,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 14:10:59,749 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:10:59,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:10:59,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1902965947, now seen corresponding path program 1 times [2023-12-20 14:10:59,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:10:59,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729771284] [2023-12-20 14:10:59,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:10:59,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:10:59,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:10:59,882 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-20 14:10:59,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:10:59,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729771284] [2023-12-20 14:10:59,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729771284] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:10:59,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:10:59,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 14:10:59,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197943176] [2023-12-20 14:10:59,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:10:59,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 14:10:59,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:10:59,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 14:10:59,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-20 14:10:59,884 INFO L87 Difference]: Start difference. First operand 13361 states and 19585 transitions. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:11:00,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:11:00,698 INFO L93 Difference]: Finished difference Result 51935 states and 75784 transitions. [2023-12-20 14:11:00,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 14:11:00,698 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2023-12-20 14:11:00,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:11:00,761 INFO L225 Difference]: With dead ends: 51935 [2023-12-20 14:11:00,761 INFO L226 Difference]: Without dead ends: 45565 [2023-12-20 14:11:00,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-20 14:11:00,775 INFO L413 NwaCegarLoop]: 1627 mSDtfsCounter, 8063 mSDsluCounter, 2308 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8063 SdHoareTripleChecker+Valid, 3935 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:11:00,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8063 Valid, 3935 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 14:11:00,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45565 states. [2023-12-20 14:11:01,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45565 to 21969. [2023-12-20 14:11:01,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21969 states, 21967 states have (on average 1.4553193426503392) internal successors, (31969), 21968 states have internal predecessors, (31969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:11:01,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21969 states to 21969 states and 31969 transitions. [2023-12-20 14:11:01,407 INFO L78 Accepts]: Start accepts. Automaton has 21969 states and 31969 transitions. Word has length 86 [2023-12-20 14:11:01,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:11:01,407 INFO L495 AbstractCegarLoop]: Abstraction has 21969 states and 31969 transitions. [2023-12-20 14:11:01,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:11:01,408 INFO L276 IsEmpty]: Start isEmpty. Operand 21969 states and 31969 transitions. [2023-12-20 14:11:01,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-20 14:11:01,410 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:11:01,410 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] [2023-12-20 14:11:01,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 14:11:01,411 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:11:01,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:11:01,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1674326715, now seen corresponding path program 1 times [2023-12-20 14:11:01,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:11:01,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303797792] [2023-12-20 14:11:01,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:11:01,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:11:01,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:11:01,521 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-20 14:11:01,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:11:01,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303797792] [2023-12-20 14:11:01,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303797792] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:11:01,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:11:01,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 14:11:01,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073606433] [2023-12-20 14:11:01,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:11:01,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 14:11:01,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:11:01,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 14:11:01,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-20 14:11:01,523 INFO L87 Difference]: Start difference. First operand 21969 states and 31969 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:11:02,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:11:02,838 INFO L93 Difference]: Finished difference Result 58303 states and 84968 transitions. [2023-12-20 14:11:02,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 14:11:02,850 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2023-12-20 14:11:02,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:11:02,933 INFO L225 Difference]: With dead ends: 58303 [2023-12-20 14:11:02,934 INFO L226 Difference]: Without dead ends: 51933 [2023-12-20 14:11:02,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-20 14:11:02,941 INFO L413 NwaCegarLoop]: 1625 mSDtfsCounter, 8103 mSDsluCounter, 2329 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8103 SdHoareTripleChecker+Valid, 3954 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:11:02,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8103 Valid, 3954 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 14:11:02,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51933 states. [2023-12-20 14:11:03,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51933 to 28337. [2023-12-20 14:11:03,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28337 states, 28335 states have (on average 1.4523733898006) internal successors, (41153), 28336 states have internal predecessors, (41153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:11:03,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28337 states to 28337 states and 41153 transitions. [2023-12-20 14:11:03,769 INFO L78 Accepts]: Start accepts. Automaton has 28337 states and 41153 transitions. Word has length 86 [2023-12-20 14:11:03,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:11:03,769 INFO L495 AbstractCegarLoop]: Abstraction has 28337 states and 41153 transitions. [2023-12-20 14:11:03,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:11:03,769 INFO L276 IsEmpty]: Start isEmpty. Operand 28337 states and 41153 transitions. [2023-12-20 14:11:03,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-20 14:11:03,776 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:11:03,776 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] [2023-12-20 14:11:03,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 14:11:03,777 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:11:03,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:11:03,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1048670651, now seen corresponding path program 1 times [2023-12-20 14:11:03,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:11:03,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761976271] [2023-12-20 14:11:03,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:11:03,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:11:03,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:11:03,916 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-20 14:11:03,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:11:03,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761976271] [2023-12-20 14:11:03,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761976271] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:11:03,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:11:03,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 14:11:03,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213788214] [2023-12-20 14:11:03,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:11:03,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 14:11:03,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:11:03,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 14:11:03,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-20 14:11:03,918 INFO L87 Difference]: Start difference. First operand 28337 states and 41153 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 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 14:11:05,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:11:05,036 INFO L93 Difference]: Finished difference Result 64671 states and 94152 transitions. [2023-12-20 14:11:05,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 14:11:05,037 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 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 86 [2023-12-20 14:11:05,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:11:05,119 INFO L225 Difference]: With dead ends: 64671 [2023-12-20 14:11:05,119 INFO L226 Difference]: Without dead ends: 58301 [2023-12-20 14:11:05,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-20 14:11:05,142 INFO L413 NwaCegarLoop]: 1623 mSDtfsCounter, 8157 mSDsluCounter, 2296 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8157 SdHoareTripleChecker+Valid, 3919 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:11:05,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8157 Valid, 3919 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 14:11:05,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58301 states. [2023-12-20 14:11:06,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58301 to 34705. [2023-12-20 14:11:06,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34705 states, 34703 states have (on average 1.4505086015618247) internal successors, (50337), 34704 states have internal predecessors, (50337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:11:06,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34705 states to 34705 states and 50337 transitions. [2023-12-20 14:11:06,406 INFO L78 Accepts]: Start accepts. Automaton has 34705 states and 50337 transitions. Word has length 86 [2023-12-20 14:11:06,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:11:06,408 INFO L495 AbstractCegarLoop]: Abstraction has 34705 states and 50337 transitions. [2023-12-20 14:11:06,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 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 14:11:06,409 INFO L276 IsEmpty]: Start isEmpty. Operand 34705 states and 50337 transitions. [2023-12-20 14:11:06,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-20 14:11:06,412 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:11:06,412 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] [2023-12-20 14:11:06,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-20 14:11:06,412 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:11:06,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:11:06,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1937404091, now seen corresponding path program 1 times [2023-12-20 14:11:06,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:11:06,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797495326] [2023-12-20 14:11:06,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:11:06,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:11:06,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:11:06,577 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-20 14:11:06,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:11:06,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797495326] [2023-12-20 14:11:06,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797495326] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:11:06,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:11:06,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 14:11:06,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245504231] [2023-12-20 14:11:06,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:11:06,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 14:11:06,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:11:06,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 14:11:06,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-20 14:11:06,579 INFO L87 Difference]: Start difference. First operand 34705 states and 50337 transitions. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:11:08,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:11:08,135 INFO L93 Difference]: Finished difference Result 71039 states and 103336 transitions. [2023-12-20 14:11:08,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 14:11:08,135 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2023-12-20 14:11:08,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:11:08,210 INFO L225 Difference]: With dead ends: 71039 [2023-12-20 14:11:08,210 INFO L226 Difference]: Without dead ends: 64669 [2023-12-20 14:11:08,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-20 14:11:08,226 INFO L413 NwaCegarLoop]: 1623 mSDtfsCounter, 8073 mSDsluCounter, 2352 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8073 SdHoareTripleChecker+Valid, 3975 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:11:08,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8073 Valid, 3975 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 14:11:08,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64669 states. [2023-12-20 14:11:09,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64669 to 41073. [2023-12-20 14:11:09,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41073 states, 41071 states have (on average 1.4492220788390835) internal successors, (59521), 41072 states have internal predecessors, (59521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:11:09,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41073 states to 41073 states and 59521 transitions. [2023-12-20 14:11:09,314 INFO L78 Accepts]: Start accepts. Automaton has 41073 states and 59521 transitions. Word has length 86 [2023-12-20 14:11:09,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:11:09,314 INFO L495 AbstractCegarLoop]: Abstraction has 41073 states and 59521 transitions. [2023-12-20 14:11:09,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:11:09,314 INFO L276 IsEmpty]: Start isEmpty. Operand 41073 states and 59521 transitions. [2023-12-20 14:11:09,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-20 14:11:09,318 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:11:09,318 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] [2023-12-20 14:11:09,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-20 14:11:09,318 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:11:09,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:11:09,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1634382779, now seen corresponding path program 1 times [2023-12-20 14:11:09,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:11:09,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774108699] [2023-12-20 14:11:09,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:11:09,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:11:09,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:11:09,433 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-20 14:11:09,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:11:09,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774108699] [2023-12-20 14:11:09,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774108699] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:11:09,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:11:09,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 14:11:09,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085772498] [2023-12-20 14:11:09,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:11:09,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 14:11:09,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:11:09,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 14:11:09,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-20 14:11:09,436 INFO L87 Difference]: Start difference. First operand 41073 states and 59521 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:11:11,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:11:11,199 INFO L93 Difference]: Finished difference Result 77407 states and 112520 transitions. [2023-12-20 14:11:11,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 14:11:11,200 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2023-12-20 14:11:11,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:11:11,278 INFO L225 Difference]: With dead ends: 77407 [2023-12-20 14:11:11,278 INFO L226 Difference]: Without dead ends: 71037 [2023-12-20 14:11:11,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-20 14:11:11,296 INFO L413 NwaCegarLoop]: 1622 mSDtfsCounter, 8010 mSDsluCounter, 2489 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8010 SdHoareTripleChecker+Valid, 4111 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 14:11:11,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8010 Valid, 4111 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 14:11:11,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71037 states. [2023-12-20 14:11:12,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71037 to 47441. [2023-12-20 14:11:12,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47441 states, 47439 states have (on average 1.448280950272982) internal successors, (68705), 47440 states have internal predecessors, (68705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:11:12,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47441 states to 47441 states and 68705 transitions. [2023-12-20 14:11:12,669 INFO L78 Accepts]: Start accepts. Automaton has 47441 states and 68705 transitions. Word has length 86 [2023-12-20 14:11:12,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:11:12,669 INFO L495 AbstractCegarLoop]: Abstraction has 47441 states and 68705 transitions. [2023-12-20 14:11:12,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:11:12,669 INFO L276 IsEmpty]: Start isEmpty. Operand 47441 states and 68705 transitions. [2023-12-20 14:11:12,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-20 14:11:12,673 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:11:12,673 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] [2023-12-20 14:11:12,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-20 14:11:12,673 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:11:12,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:11:12,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1298476795, now seen corresponding path program 1 times [2023-12-20 14:11:12,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:11:12,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491495541] [2023-12-20 14:11:12,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:11:12,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:11:12,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:11:12,729 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:11:12,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:11:12,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491495541] [2023-12-20 14:11:12,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491495541] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:11:12,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:11:12,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:11:12,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147063988] [2023-12-20 14:11:12,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:11:12,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:11:12,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:11:12,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:11:12,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:11:12,730 INFO L87 Difference]: Start difference. First operand 47441 states and 68705 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 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 14:11:13,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:11:13,900 INFO L93 Difference]: Finished difference Result 93333 states and 134947 transitions. [2023-12-20 14:11:13,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:11:13,900 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 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 87 [2023-12-20 14:11:13,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:11:13,949 INFO L225 Difference]: With dead ends: 93333 [2023-12-20 14:11:13,949 INFO L226 Difference]: Without dead ends: 47443 [2023-12-20 14:11:13,976 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 14:11:13,976 INFO L413 NwaCegarLoop]: 1598 mSDtfsCounter, 53 mSDsluCounter, 1545 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 3143 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 14:11:13,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 3143 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:11:14,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47443 states. [2023-12-20 14:11:15,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47443 to 47441. [2023-12-20 14:11:15,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47441 states, 47439 states have (on average 1.4337781150530156) internal successors, (68017), 47440 states have internal predecessors, (68017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:11:15,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47441 states to 47441 states and 68017 transitions. [2023-12-20 14:11:15,268 INFO L78 Accepts]: Start accepts. Automaton has 47441 states and 68017 transitions. Word has length 87 [2023-12-20 14:11:15,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:11:15,268 INFO L495 AbstractCegarLoop]: Abstraction has 47441 states and 68017 transitions. [2023-12-20 14:11:15,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 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 14:11:15,269 INFO L276 IsEmpty]: Start isEmpty. Operand 47441 states and 68017 transitions. [2023-12-20 14:11:15,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-20 14:11:15,271 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:11:15,271 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] [2023-12-20 14:11:15,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-20 14:11:15,272 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:11:15,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:11:15,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1037402045, now seen corresponding path program 1 times [2023-12-20 14:11:15,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:11:15,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380104609] [2023-12-20 14:11:15,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:11:15,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:11:15,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:11:15,332 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:11:15,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:11:15,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380104609] [2023-12-20 14:11:15,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380104609] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:11:15,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:11:15,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:11:15,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977328378] [2023-12-20 14:11:15,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:11:15,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:11:15,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:11:15,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:11:15,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:11:15,333 INFO L87 Difference]: Start difference. First operand 47441 states and 68017 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:11:15,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:11:15,712 INFO L93 Difference]: Finished difference Result 64265 states and 92280 transitions. [2023-12-20 14:11:15,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:11:15,712 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2023-12-20 14:11:15,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:11:15,731 INFO L225 Difference]: With dead ends: 64265 [2023-12-20 14:11:15,731 INFO L226 Difference]: Without dead ends: 18375 [2023-12-20 14:11:15,756 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 14:11:15,757 INFO L413 NwaCegarLoop]: 1596 mSDtfsCounter, 47 mSDsluCounter, 1544 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 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 14:11:15,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 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 14:11:15,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18375 states. [2023-12-20 14:11:16,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18375 to 18368. [2023-12-20 14:11:16,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18368 states, 18366 states have (on average 1.4417946204943919) internal successors, (26480), 18367 states have internal predecessors, (26480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:11:16,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18368 states to 18368 states and 26480 transitions. [2023-12-20 14:11:16,314 INFO L78 Accepts]: Start accepts. Automaton has 18368 states and 26480 transitions. Word has length 88 [2023-12-20 14:11:16,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:11:16,314 INFO L495 AbstractCegarLoop]: Abstraction has 18368 states and 26480 transitions. [2023-12-20 14:11:16,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:11:16,314 INFO L276 IsEmpty]: Start isEmpty. Operand 18368 states and 26480 transitions. [2023-12-20 14:11:16,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-20 14:11:16,316 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:11:16,316 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] [2023-12-20 14:11:16,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-20 14:11:16,316 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:11:16,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:11:16,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1781311287, now seen corresponding path program 1 times [2023-12-20 14:11:16,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:11:16,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467868503] [2023-12-20 14:11:16,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:11:16,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:11:16,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:11:16,373 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:11:16,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:11:16,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467868503] [2023-12-20 14:11:16,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467868503] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:11:16,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:11:16,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:11:16,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840485950] [2023-12-20 14:11:16,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:11:16,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:11:16,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:11:16,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:11:16,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:11:16,374 INFO L87 Difference]: Start difference. First operand 18368 states and 26480 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 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 14:11:16,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:11:16,559 INFO L93 Difference]: Finished difference Result 26772 states and 38482 transitions. [2023-12-20 14:11:16,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:11:16,559 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 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 89 [2023-12-20 14:11:16,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:11:16,568 INFO L225 Difference]: With dead ends: 26772 [2023-12-20 14:11:16,569 INFO L226 Difference]: Without dead ends: 9970 [2023-12-20 14:11:16,578 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 14:11:16,578 INFO L413 NwaCegarLoop]: 1590 mSDtfsCounter, 49 mSDsluCounter, 1529 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 3119 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 14:11:16,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 3119 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:11:16,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9970 states. [2023-12-20 14:11:16,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9970 to 9968. [2023-12-20 14:11:16,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9968 states, 9966 states have (on average 1.4408990567930966) internal successors, (14360), 9967 states have internal predecessors, (14360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:11:16,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9968 states to 9968 states and 14360 transitions. [2023-12-20 14:11:16,781 INFO L78 Accepts]: Start accepts. Automaton has 9968 states and 14360 transitions. Word has length 89 [2023-12-20 14:11:16,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:11:16,782 INFO L495 AbstractCegarLoop]: Abstraction has 9968 states and 14360 transitions. [2023-12-20 14:11:16,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 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 14:11:16,782 INFO L276 IsEmpty]: Start isEmpty. Operand 9968 states and 14360 transitions. [2023-12-20 14:11:16,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-20 14:11:16,783 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:11:16,783 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] [2023-12-20 14:11:16,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-20 14:11:16,784 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:11:16,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:11:16,784 INFO L85 PathProgramCache]: Analyzing trace with hash 2081860631, now seen corresponding path program 1 times [2023-12-20 14:11:16,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:11:16,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591755776] [2023-12-20 14:11:16,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:11:16,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:11:16,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:11:16,834 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:11:16,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:11:16,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591755776] [2023-12-20 14:11:16,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591755776] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:11:16,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:11:16,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:11:16,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449243398] [2023-12-20 14:11:16,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:11:16,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:11:16,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:11:16,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:11:16,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:11:16,835 INFO L87 Difference]: Start difference. First operand 9968 states and 14360 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 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 14:11:17,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:11:17,070 INFO L93 Difference]: Finished difference Result 14172 states and 20302 transitions. [2023-12-20 14:11:17,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:11:17,071 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 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 91 [2023-12-20 14:11:17,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:11:17,075 INFO L225 Difference]: With dead ends: 14172 [2023-12-20 14:11:17,076 INFO L226 Difference]: Without dead ends: 5770 [2023-12-20 14:11:17,078 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 14:11:17,079 INFO L413 NwaCegarLoop]: 1583 mSDtfsCounter, 46 mSDsluCounter, 1521 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 3104 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 14:11:17,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 3104 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:11:17,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5770 states. [2023-12-20 14:11:17,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5770 to 5768. [2023-12-20 14:11:17,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5768 states, 5766 states have (on average 1.4498785986819285) internal successors, (8360), 5767 states have internal predecessors, (8360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:11:17,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5768 states to 5768 states and 8360 transitions. [2023-12-20 14:11:17,224 INFO L78 Accepts]: Start accepts. Automaton has 5768 states and 8360 transitions. Word has length 91 [2023-12-20 14:11:17,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:11:17,224 INFO L495 AbstractCegarLoop]: Abstraction has 5768 states and 8360 transitions. [2023-12-20 14:11:17,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 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 14:11:17,224 INFO L276 IsEmpty]: Start isEmpty. Operand 5768 states and 8360 transitions. [2023-12-20 14:11:17,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-20 14:11:17,225 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:11:17,226 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] [2023-12-20 14:11:17,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-20 14:11:17,226 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:11:17,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:11:17,226 INFO L85 PathProgramCache]: Analyzing trace with hash 207620325, now seen corresponding path program 1 times [2023-12-20 14:11:17,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:11:17,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21301561] [2023-12-20 14:11:17,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:11:17,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:11:17,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:11:17,295 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:11:17,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:11:17,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21301561] [2023-12-20 14:11:17,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21301561] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:11:17,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:11:17,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:11:17,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758859659] [2023-12-20 14:11:17,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:11:17,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:11:17,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:11:17,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:11:17,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:11:17,296 INFO L87 Difference]: Start difference. First operand 5768 states and 8360 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 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 14:11:17,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:11:17,368 INFO L93 Difference]: Finished difference Result 7872 states and 11302 transitions. [2023-12-20 14:11:17,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:11:17,369 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 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 93 [2023-12-20 14:11:17,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:11:17,372 INFO L225 Difference]: With dead ends: 7872 [2023-12-20 14:11:17,372 INFO L226 Difference]: Without dead ends: 3670 [2023-12-20 14:11:17,375 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 14:11:17,375 INFO L413 NwaCegarLoop]: 1576 mSDtfsCounter, 43 mSDsluCounter, 1513 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 3089 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 14:11:17,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 3089 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:11:17,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3670 states. [2023-12-20 14:11:17,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3670 to 3668. [2023-12-20 14:11:17,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3668 states, 3666 states have (on average 1.470267321331151) internal successors, (5390), 3667 states have internal predecessors, (5390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:11:17,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3668 states to 3668 states and 5390 transitions. [2023-12-20 14:11:17,456 INFO L78 Accepts]: Start accepts. Automaton has 3668 states and 5390 transitions. Word has length 93 [2023-12-20 14:11:17,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:11:17,456 INFO L495 AbstractCegarLoop]: Abstraction has 3668 states and 5390 transitions. [2023-12-20 14:11:17,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 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 14:11:17,456 INFO L276 IsEmpty]: Start isEmpty. Operand 3668 states and 5390 transitions. [2023-12-20 14:11:17,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-20 14:11:17,457 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:11:17,457 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] [2023-12-20 14:11:17,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-20 14:11:17,457 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:11:17,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:11:17,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1099411661, now seen corresponding path program 1 times [2023-12-20 14:11:17,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:11:17,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884297842] [2023-12-20 14:11:17,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:11:17,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:11:17,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:11:17,521 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:11:17,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:11:17,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884297842] [2023-12-20 14:11:17,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884297842] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:11:17,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:11:17,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:11:17,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723127776] [2023-12-20 14:11:17,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:11:17,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:11:17,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:11:17,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:11:17,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:11:17,522 INFO L87 Difference]: Start difference. First operand 3668 states and 5390 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 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 14:11:17,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:11:17,568 INFO L93 Difference]: Finished difference Result 4722 states and 6847 transitions. [2023-12-20 14:11:17,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:11:17,568 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 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 95 [2023-12-20 14:11:17,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:11:17,571 INFO L225 Difference]: With dead ends: 4722 [2023-12-20 14:11:17,571 INFO L226 Difference]: Without dead ends: 2620 [2023-12-20 14:11:17,572 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 14:11:17,573 INFO L413 NwaCegarLoop]: 1569 mSDtfsCounter, 40 mSDsluCounter, 1505 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 3074 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 14:11:17,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 3074 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:11:17,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2620 states. [2023-12-20 14:11:17,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2620 to 2618. [2023-12-20 14:11:17,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2618 states, 2616 states have (on average 1.4984709480122325) internal successors, (3920), 2617 states have internal predecessors, (3920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:11:17,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2618 states to 2618 states and 3920 transitions. [2023-12-20 14:11:17,624 INFO L78 Accepts]: Start accepts. Automaton has 2618 states and 3920 transitions. Word has length 95 [2023-12-20 14:11:17,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:11:17,625 INFO L495 AbstractCegarLoop]: Abstraction has 2618 states and 3920 transitions. [2023-12-20 14:11:17,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 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 14:11:17,625 INFO L276 IsEmpty]: Start isEmpty. Operand 2618 states and 3920 transitions. [2023-12-20 14:11:17,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-20 14:11:17,626 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:11:17,626 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] [2023-12-20 14:11:17,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-20 14:11:17,626 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:11:17,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:11:17,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1010802943, now seen corresponding path program 1 times [2023-12-20 14:11:17,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:11:17,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804846805] [2023-12-20 14:11:17,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:11:17,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:11:17,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:11:17,744 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 14:11:17,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:11:17,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804846805] [2023-12-20 14:11:17,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804846805] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:11:17,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580088246] [2023-12-20 14:11:17,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:11:17,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:11:17,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:11:17,762 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 14:11:17,780 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 14:11:17,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:11:17,894 INFO L262 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-20 14:11:17,899 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:11:18,034 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 14:11:18,034 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:11:18,327 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 14:11:18,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [580088246] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 14:11:18,327 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 14:11:18,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 8 [2023-12-20 14:11:18,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804618881] [2023-12-20 14:11:18,328 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 14:11:18,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 14:11:18,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:11:18,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 14:11:18,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2023-12-20 14:11:18,329 INFO L87 Difference]: Start difference. First operand 2618 states and 3920 transitions. Second operand has 8 states, 8 states have (on average 31.125) internal successors, (249), 8 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:11:18,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:11:18,471 INFO L93 Difference]: Finished difference Result 5154 states and 7319 transitions. [2023-12-20 14:11:18,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 14:11:18,471 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 31.125) internal successors, (249), 8 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2023-12-20 14:11:18,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:11:18,475 INFO L225 Difference]: With dead ends: 5154 [2023-12-20 14:11:18,475 INFO L226 Difference]: Without dead ends: 4102 [2023-12-20 14:11:18,476 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=38, Unknown=0, NotChecked=0, Total=72 [2023-12-20 14:11:18,477 INFO L413 NwaCegarLoop]: 1553 mSDtfsCounter, 1583 mSDsluCounter, 1892 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1583 SdHoareTripleChecker+Valid, 3445 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:11:18,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1583 Valid, 3445 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:11:18,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4102 states. [2023-12-20 14:11:18,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4102 to 4025. [2023-12-20 14:11:18,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4025 states, 4023 states have (on average 1.4195873726075068) internal successors, (5711), 4024 states have internal predecessors, (5711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:11:18,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4025 states to 4025 states and 5711 transitions. [2023-12-20 14:11:18,579 INFO L78 Accepts]: Start accepts. Automaton has 4025 states and 5711 transitions. Word has length 97 [2023-12-20 14:11:18,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:11:18,579 INFO L495 AbstractCegarLoop]: Abstraction has 4025 states and 5711 transitions. [2023-12-20 14:11:18,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 31.125) internal successors, (249), 8 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:11:18,579 INFO L276 IsEmpty]: Start isEmpty. Operand 4025 states and 5711 transitions. [2023-12-20 14:11:18,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-20 14:11:18,580 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:11:18,580 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:11:18,601 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 14:11:18,786 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,SelfDestructingSolverStorable25 [2023-12-20 14:11:18,786 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:11:18,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:11:18,786 INFO L85 PathProgramCache]: Analyzing trace with hash 806498379, now seen corresponding path program 1 times [2023-12-20 14:11:18,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:11:18,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911596035] [2023-12-20 14:11:18,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:11:18,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:11:18,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:11:19,388 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:11:19,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:11:19,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911596035] [2023-12-20 14:11:19,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911596035] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:11:19,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [977935160] [2023-12-20 14:11:19,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:11:19,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:11:19,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:11:19,390 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 14:11:19,443 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 14:11:19,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:11:19,535 INFO L262 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-20 14:11:19,537 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:11:19,922 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:11:19,922 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:11:20,540 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:11:20,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [977935160] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 14:11:20,540 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 14:11:20,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 28 [2023-12-20 14:11:20,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438274764] [2023-12-20 14:11:20,541 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 14:11:20,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-20 14:11:20,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:11:20,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-20 14:11:20,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=711, Unknown=0, NotChecked=0, Total=812 [2023-12-20 14:11:20,542 INFO L87 Difference]: Start difference. First operand 4025 states and 5711 transitions. Second operand has 29 states, 29 states have (on average 8.827586206896552) internal successors, (256), 28 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:11:22,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:11:22,840 INFO L93 Difference]: Finished difference Result 15869 states and 21272 transitions. [2023-12-20 14:11:22,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-12-20 14:11:22,841 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 8.827586206896552) internal successors, (256), 28 states have internal predecessors, (256), 0 states have call successors, (0), 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 98 [2023-12-20 14:11:22,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:11:22,853 INFO L225 Difference]: With dead ends: 15869 [2023-12-20 14:11:22,854 INFO L226 Difference]: Without dead ends: 13454 [2023-12-20 14:11:22,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1078 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1004, Invalid=3966, Unknown=0, NotChecked=0, Total=4970 [2023-12-20 14:11:22,859 INFO L413 NwaCegarLoop]: 1523 mSDtfsCounter, 27530 mSDsluCounter, 8140 mSDsCounter, 0 mSdLazyCounter, 1061 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27530 SdHoareTripleChecker+Valid, 9663 SdHoareTripleChecker+Invalid, 1102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1061 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 14:11:22,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27530 Valid, 9663 Invalid, 1102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1061 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 14:11:22,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13454 states. [2023-12-20 14:11:23,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13454 to 12662. [2023-12-20 14:11:23,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12662 states, 12660 states have (on average 1.3374407582938388) internal successors, (16932), 12661 states have internal predecessors, (16932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:11:23,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12662 states to 12662 states and 16932 transitions. [2023-12-20 14:11:23,156 INFO L78 Accepts]: Start accepts. Automaton has 12662 states and 16932 transitions. Word has length 98 [2023-12-20 14:11:23,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:11:23,156 INFO L495 AbstractCegarLoop]: Abstraction has 12662 states and 16932 transitions. [2023-12-20 14:11:23,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 8.827586206896552) internal successors, (256), 28 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:11:23,157 INFO L276 IsEmpty]: Start isEmpty. Operand 12662 states and 16932 transitions. [2023-12-20 14:11:23,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-20 14:11:23,158 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:11:23,158 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:11:23,165 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 14:11:23,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-20 14:11:23,364 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:11:23,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:11:23,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1190406581, now seen corresponding path program 1 times [2023-12-20 14:11:23,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:11:23,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367788751] [2023-12-20 14:11:23,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:11:23,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:11:23,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:11:23,960 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:11:23,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:11:23,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367788751] [2023-12-20 14:11:23,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367788751] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:11:23,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234476791] [2023-12-20 14:11:23,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:11:23,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:11:23,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:11:23,962 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 14:11:23,984 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 14:11:24,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:11:24,095 INFO L262 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 14:11:24,103 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:11:24,675 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:11:24,675 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:11:25,504 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:11:25,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1234476791] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 14:11:25,505 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 14:11:25,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 34 [2023-12-20 14:11:25,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002385086] [2023-12-20 14:11:25,505 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 14:11:25,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-20 14:11:25,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:11:25,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-20 14:11:25,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=980, Unknown=0, NotChecked=0, Total=1122 [2023-12-20 14:11:25,507 INFO L87 Difference]: Start difference. First operand 12662 states and 16932 transitions. Second operand has 34 states, 34 states have (on average 7.882352941176471) internal successors, (268), 34 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:11:30,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:11:30,737 INFO L93 Difference]: Finished difference Result 64774 states and 84651 transitions. [2023-12-20 14:11:30,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2023-12-20 14:11:30,738 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 7.882352941176471) internal successors, (268), 34 states have internal predecessors, (268), 0 states have call successors, (0), 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 98 [2023-12-20 14:11:30,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:11:30,791 INFO L225 Difference]: With dead ends: 64774 [2023-12-20 14:11:30,792 INFO L226 Difference]: Without dead ends: 54016 [2023-12-20 14:11:30,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2233 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1531, Invalid=7025, Unknown=0, NotChecked=0, Total=8556 [2023-12-20 14:11:30,806 INFO L413 NwaCegarLoop]: 1525 mSDtfsCounter, 23781 mSDsluCounter, 9846 mSDsCounter, 0 mSdLazyCounter, 1931 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23781 SdHoareTripleChecker+Valid, 11371 SdHoareTripleChecker+Invalid, 1979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1931 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:11:30,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23781 Valid, 11371 Invalid, 1979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1931 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-20 14:11:30,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54016 states. [2023-12-20 14:11:32,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54016 to 49672. [2023-12-20 14:11:32,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49672 states, 49670 states have (on average 1.2938997382725992) internal successors, (64268), 49671 states have internal predecessors, (64268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:11:32,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49672 states to 49672 states and 64268 transitions. [2023-12-20 14:11:32,213 INFO L78 Accepts]: Start accepts. Automaton has 49672 states and 64268 transitions. Word has length 98 [2023-12-20 14:11:32,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:11:32,214 INFO L495 AbstractCegarLoop]: Abstraction has 49672 states and 64268 transitions. [2023-12-20 14:11:32,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 7.882352941176471) internal successors, (268), 34 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:11:32,214 INFO L276 IsEmpty]: Start isEmpty. Operand 49672 states and 64268 transitions. [2023-12-20 14:11:32,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-20 14:11:32,217 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:11:32,218 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:11:32,235 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 14:11:32,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:11:32,424 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:11:32,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:11:32,424 INFO L85 PathProgramCache]: Analyzing trace with hash 545897423, now seen corresponding path program 1 times [2023-12-20 14:11:32,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:11:32,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632664078] [2023-12-20 14:11:32,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:11:32,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:11:32,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:11:32,698 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:11:32,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:11:32,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632664078] [2023-12-20 14:11:32,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632664078] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:11:32,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405303100] [2023-12-20 14:11:32,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:11:32,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:11:32,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:11:32,700 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 14:11:32,702 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 14:11:32,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:11:32,804 INFO L262 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-20 14:11:32,808 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:11:33,205 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:11:33,205 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:11:33,894 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:11:33,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1405303100] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 14:11:33,894 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 14:11:33,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2023-12-20 14:11:33,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593230965] [2023-12-20 14:11:33,894 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 14:11:33,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-20 14:11:33,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:11:33,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-20 14:11:33,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2023-12-20 14:11:33,896 INFO L87 Difference]: Start difference. First operand 49672 states and 64268 transitions. Second operand has 25 states, 25 states have (on average 11.36) internal successors, (284), 24 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:11:36,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:11:36,735 INFO L93 Difference]: Finished difference Result 99519 states and 128014 transitions. [2023-12-20 14:11:36,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-12-20 14:11:36,735 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 11.36) internal successors, (284), 24 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2023-12-20 14:11:36,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:11:36,808 INFO L225 Difference]: With dead ends: 99519 [2023-12-20 14:11:36,808 INFO L226 Difference]: Without dead ends: 53572 [2023-12-20 14:11:36,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 657 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=690, Invalid=2616, Unknown=0, NotChecked=0, Total=3306 [2023-12-20 14:11:36,851 INFO L413 NwaCegarLoop]: 1530 mSDtfsCounter, 22606 mSDsluCounter, 8046 mSDsCounter, 0 mSdLazyCounter, 785 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22606 SdHoareTripleChecker+Valid, 9576 SdHoareTripleChecker+Invalid, 816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 14:11:36,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22606 Valid, 9576 Invalid, 816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 785 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 14:11:36,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53572 states. [2023-12-20 14:11:38,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53572 to 40102. [2023-12-20 14:11:38,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40102 states, 40100 states have (on average 1.268079800498753) internal successors, (50850), 40101 states have internal predecessors, (50850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:11:38,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40102 states to 40102 states and 50850 transitions. [2023-12-20 14:11:38,364 INFO L78 Accepts]: Start accepts. Automaton has 40102 states and 50850 transitions. Word has length 99 [2023-12-20 14:11:38,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:11:38,365 INFO L495 AbstractCegarLoop]: Abstraction has 40102 states and 50850 transitions. [2023-12-20 14:11:38,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 11.36) internal successors, (284), 24 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:11:38,365 INFO L276 IsEmpty]: Start isEmpty. Operand 40102 states and 50850 transitions. [2023-12-20 14:11:38,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-20 14:11:38,383 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:11:38,383 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:11:38,390 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 14:11:38,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-20 14:11:38,588 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:11:38,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:11:38,589 INFO L85 PathProgramCache]: Analyzing trace with hash -773157797, now seen corresponding path program 1 times [2023-12-20 14:11:38,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:11:38,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860362162] [2023-12-20 14:11:38,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:11:38,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:11:38,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:11:38,853 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:11:38,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:11:38,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860362162] [2023-12-20 14:11:38,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860362162] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:11:38,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535708504] [2023-12-20 14:11:38,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:11:38,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:11:38,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:11:38,855 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 14:11:38,882 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 14:11:38,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:11:38,964 INFO L262 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-20 14:11:38,967 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:11:39,810 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:11:39,810 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:11:40,909 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:11:40,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1535708504] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 14:11:40,910 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 14:11:40,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 14, 15] total 35 [2023-12-20 14:11:40,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28872016] [2023-12-20 14:11:40,910 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 14:11:40,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-20 14:11:40,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:11:40,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-20 14:11:40,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=1042, Unknown=0, NotChecked=0, Total=1190 [2023-12-20 14:11:40,913 INFO L87 Difference]: Start difference. First operand 40102 states and 50850 transitions. Second operand has 35 states, 35 states have (on average 8.2) internal successors, (287), 35 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:11:44,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:11:44,755 INFO L93 Difference]: Finished difference Result 91459 states and 114326 transitions. [2023-12-20 14:11:44,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-12-20 14:11:44,756 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 8.2) internal successors, (287), 35 states have internal predecessors, (287), 0 states have call successors, (0), 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 14:11:44,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:11:44,813 INFO L225 Difference]: With dead ends: 91459 [2023-12-20 14:11:44,813 INFO L226 Difference]: Without dead ends: 56069 [2023-12-20 14:11:44,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1359 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1152, Invalid=4398, Unknown=0, NotChecked=0, Total=5550 [2023-12-20 14:11:44,826 INFO L413 NwaCegarLoop]: 1523 mSDtfsCounter, 13479 mSDsluCounter, 14014 mSDsCounter, 0 mSdLazyCounter, 1074 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13479 SdHoareTripleChecker+Valid, 15537 SdHoareTripleChecker+Invalid, 1158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1074 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-20 14:11:44,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13479 Valid, 15537 Invalid, 1158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1074 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-20 14:11:44,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56069 states. [2023-12-20 14:11:46,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56069 to 48341. [2023-12-20 14:11:46,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48341 states, 48339 states have (on average 1.255011481412524) internal successors, (60666), 48340 states have internal predecessors, (60666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:11:46,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48341 states to 48341 states and 60666 transitions. [2023-12-20 14:11:46,409 INFO L78 Accepts]: Start accepts. Automaton has 48341 states and 60666 transitions. Word has length 100 [2023-12-20 14:11:46,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:11:46,409 INFO L495 AbstractCegarLoop]: Abstraction has 48341 states and 60666 transitions. [2023-12-20 14:11:46,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 8.2) internal successors, (287), 35 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:11:46,409 INFO L276 IsEmpty]: Start isEmpty. Operand 48341 states and 60666 transitions. [2023-12-20 14:11:46,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-20 14:11:46,411 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:11:46,411 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:11:46,418 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-20 14:11:46,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:11:46,616 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:11:46,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:11:46,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1322403255, now seen corresponding path program 1 times [2023-12-20 14:11:46,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:11:46,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464694186] [2023-12-20 14:11:46,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:11:46,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:11:46,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:11:47,193 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:11:47,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:11:47,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464694186] [2023-12-20 14:11:47,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464694186] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:11:47,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [278419467] [2023-12-20 14:11:47,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:11:47,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:11:47,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:11:47,195 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:11:47,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-20 14:11:47,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:11:47,310 INFO L262 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 14:11:47,312 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:11:48,086 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:11:48,087 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:11:48,932 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:11:48,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [278419467] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 14:11:48,932 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 14:11:48,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 28 [2023-12-20 14:11:48,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761219758] [2023-12-20 14:11:48,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 14:11:48,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-20 14:11:48,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:11:48,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-20 14:11:48,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=604, Unknown=0, NotChecked=0, Total=756 [2023-12-20 14:11:48,934 INFO L87 Difference]: Start difference. First operand 48341 states and 60666 transitions. Second operand has 28 states, 28 states have (on average 9.428571428571429) internal successors, (264), 28 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:11:51,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:11:51,926 INFO L93 Difference]: Finished difference Result 141081 states and 176018 transitions. [2023-12-20 14:11:51,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-20 14:11:51,928 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 9.428571428571429) internal successors, (264), 28 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2023-12-20 14:11:51,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:11:52,045 INFO L225 Difference]: With dead ends: 141081 [2023-12-20 14:11:52,046 INFO L226 Difference]: Without dead ends: 99712 [2023-12-20 14:11:52,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=449, Invalid=1357, Unknown=0, NotChecked=0, Total=1806 [2023-12-20 14:11:52,062 INFO L413 NwaCegarLoop]: 1536 mSDtfsCounter, 19667 mSDsluCounter, 7966 mSDsCounter, 0 mSdLazyCounter, 641 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19667 SdHoareTripleChecker+Valid, 9502 SdHoareTripleChecker+Invalid, 668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 14:11:52,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19667 Valid, 9502 Invalid, 668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 641 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 14:11:52,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99712 states. [2023-12-20 14:11:55,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99712 to 95048. [2023-12-20 14:11:55,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95048 states, 95046 states have (on average 1.2393788270942492) internal successors, (117798), 95047 states have internal predecessors, (117798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:11:55,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95048 states to 95048 states and 117798 transitions. [2023-12-20 14:11:55,534 INFO L78 Accepts]: Start accepts. Automaton has 95048 states and 117798 transitions. Word has length 101 [2023-12-20 14:11:55,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:11:55,535 INFO L495 AbstractCegarLoop]: Abstraction has 95048 states and 117798 transitions. [2023-12-20 14:11:55,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 9.428571428571429) internal successors, (264), 28 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:11:55,535 INFO L276 IsEmpty]: Start isEmpty. Operand 95048 states and 117798 transitions. [2023-12-20 14:11:55,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-20 14:11:55,538 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:11:55,538 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:11:55,554 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-20 14:11:55,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:11:55,745 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:11:55,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:11:55,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1425391795, now seen corresponding path program 1 times [2023-12-20 14:11:55,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:11:55,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125632825] [2023-12-20 14:11:55,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:11:55,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:11:55,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:11:56,526 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:11:56,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:11:56,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125632825] [2023-12-20 14:11:56,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125632825] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:11:56,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60864534] [2023-12-20 14:11:56,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:11:56,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:11:56,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:11:56,528 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:11:56,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-20 14:11:56,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:11:56,648 INFO L262 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-20 14:11:56,650 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:11:57,627 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:11:57,627 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:11:58,746 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:11:58,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [60864534] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 14:11:58,746 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 14:11:58,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 13] total 34 [2023-12-20 14:11:58,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853822528] [2023-12-20 14:11:58,746 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 14:11:58,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-20 14:11:58,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:11:58,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-20 14:11:58,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1011, Unknown=0, NotChecked=0, Total=1122 [2023-12-20 14:11:58,748 INFO L87 Difference]: Start difference. First operand 95048 states and 117798 transitions. Second operand has 34 states, 34 states have (on average 8.147058823529411) internal successors, (277), 34 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:12:11,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:12:11,326 INFO L93 Difference]: Finished difference Result 263906 states and 324989 transitions. [2023-12-20 14:12:11,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2023-12-20 14:12:11,327 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 8.147058823529411) internal successors, (277), 34 states have internal predecessors, (277), 0 states have call successors, (0), 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 14:12:11,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:12:11,778 INFO L225 Difference]: With dead ends: 263906 [2023-12-20 14:12:11,778 INFO L226 Difference]: Without dead ends: 225100 [2023-12-20 14:12:11,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4969 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=2836, Invalid=12664, Unknown=0, NotChecked=0, Total=15500 [2023-12-20 14:12:11,822 INFO L413 NwaCegarLoop]: 1569 mSDtfsCounter, 18223 mSDsluCounter, 24115 mSDsCounter, 0 mSdLazyCounter, 2719 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18223 SdHoareTripleChecker+Valid, 25684 SdHoareTripleChecker+Invalid, 2817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 2719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-20 14:12:11,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18223 Valid, 25684 Invalid, 2817 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [98 Valid, 2719 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-20 14:12:11,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225100 states. [2023-12-20 14:12:15,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225100 to 80496. [2023-12-20 14:12:15,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80496 states, 80494 states have (on average 1.2373841528561136) internal successors, (99602), 80495 states have internal predecessors, (99602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:12:15,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80496 states to 80496 states and 99602 transitions. [2023-12-20 14:12:15,904 INFO L78 Accepts]: Start accepts. Automaton has 80496 states and 99602 transitions. Word has length 102 [2023-12-20 14:12:15,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:12:15,904 INFO L495 AbstractCegarLoop]: Abstraction has 80496 states and 99602 transitions. [2023-12-20 14:12:15,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 8.147058823529411) internal successors, (277), 34 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:12:15,904 INFO L276 IsEmpty]: Start isEmpty. Operand 80496 states and 99602 transitions. [2023-12-20 14:12:15,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-20 14:12:15,906 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:12:15,906 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:12:15,912 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-20 14:12:16,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:12:16,112 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:12:16,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:12:16,112 INFO L85 PathProgramCache]: Analyzing trace with hash 578499507, now seen corresponding path program 1 times [2023-12-20 14:12:16,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:12:16,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119148275] [2023-12-20 14:12:16,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:12:16,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:12:16,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:12:16,859 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:12:16,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:12:16,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119148275] [2023-12-20 14:12:16,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119148275] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:12:16,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654730983] [2023-12-20 14:12:16,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:12:16,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:12:16,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:12:16,864 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:12:16,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-20 14:12:16,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:12:16,992 INFO L262 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-20 14:12:16,994 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:12:17,817 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:12:17,817 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:12:18,520 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:12:18,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1654730983] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 14:12:18,520 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 14:12:18,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 35 [2023-12-20 14:12:18,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513047255] [2023-12-20 14:12:18,521 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 14:12:18,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-20 14:12:18,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:12:18,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-20 14:12:18,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=1076, Unknown=0, NotChecked=0, Total=1190 [2023-12-20 14:12:18,522 INFO L87 Difference]: Start difference. First operand 80496 states and 99602 transitions. Second operand has 35 states, 35 states have (on average 7.3428571428571425) internal successors, (257), 35 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:12:29,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:12:29,255 INFO L93 Difference]: Finished difference Result 179543 states and 221158 transitions. [2023-12-20 14:12:29,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2023-12-20 14:12:29,255 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 7.3428571428571425) internal successors, (257), 35 states have internal predecessors, (257), 0 states have call successors, (0), 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 14:12:29,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:12:29,411 INFO L225 Difference]: With dead ends: 179543 [2023-12-20 14:12:29,411 INFO L226 Difference]: Without dead ends: 138715 [2023-12-20 14:12:29,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3677 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=2474, Invalid=10182, Unknown=0, NotChecked=0, Total=12656 [2023-12-20 14:12:29,452 INFO L413 NwaCegarLoop]: 1611 mSDtfsCounter, 14917 mSDsluCounter, 20961 mSDsCounter, 0 mSdLazyCounter, 2431 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14917 SdHoareTripleChecker+Valid, 22572 SdHoareTripleChecker+Invalid, 2515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 2431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-20 14:12:29,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14917 Valid, 22572 Invalid, 2515 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [84 Valid, 2431 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-20 14:12:29,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138715 states. [2023-12-20 14:12:32,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138715 to 61768. [2023-12-20 14:12:32,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61768 states, 61766 states have (on average 1.2389826117928957) internal successors, (76527), 61767 states have internal predecessors, (76527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:12:32,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61768 states to 61768 states and 76527 transitions. [2023-12-20 14:12:32,768 INFO L78 Accepts]: Start accepts. Automaton has 61768 states and 76527 transitions. Word has length 102 [2023-12-20 14:12:32,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:12:32,769 INFO L495 AbstractCegarLoop]: Abstraction has 61768 states and 76527 transitions. [2023-12-20 14:12:32,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 7.3428571428571425) internal successors, (257), 35 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:12:32,769 INFO L276 IsEmpty]: Start isEmpty. Operand 61768 states and 76527 transitions. [2023-12-20 14:12:32,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-20 14:12:32,770 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:12:32,770 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] [2023-12-20 14:12:32,776 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-20 14:12:32,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-12-20 14:12:32,971 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:12:32,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:12:32,972 INFO L85 PathProgramCache]: Analyzing trace with hash -652250555, now seen corresponding path program 1 times [2023-12-20 14:12:32,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:12:32,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895781794] [2023-12-20 14:12:32,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:12:32,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:12:33,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:12:35,388 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 14:12:35,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:12:35,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895781794] [2023-12-20 14:12:35,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895781794] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:12:35,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1671118900] [2023-12-20 14:12:35,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:12:35,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:12:35,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:12:35,390 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:12:35,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-20 14:12:35,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:12:35,533 INFO L262 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-20 14:12:35,535 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:12:37,239 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 14:12:37,239 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:12:39,698 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 14:12:39,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1671118900] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 14:12:39,699 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 14:12:39,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 17, 18] total 66 [2023-12-20 14:12:39,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004628815] [2023-12-20 14:12:39,699 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 14:12:39,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2023-12-20 14:12:39,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:12:39,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2023-12-20 14:12:39,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=3985, Unknown=0, NotChecked=0, Total=4290 [2023-12-20 14:12:39,701 INFO L87 Difference]: Start difference. First operand 61768 states and 76527 transitions. Second operand has 66 states, 66 states have (on average 4.136363636363637) internal successors, (273), 66 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:13:41,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:13:41,171 INFO L93 Difference]: Finished difference Result 181596 states and 222554 transitions. [2023-12-20 14:13:41,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 353 states. [2023-12-20 14:13:41,172 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 4.136363636363637) internal successors, (273), 66 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2023-12-20 14:13:41,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:13:41,330 INFO L225 Difference]: With dead ends: 181596 [2023-12-20 14:13:41,330 INFO L226 Difference]: Without dead ends: 154982 [2023-12-20 14:13:41,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 590 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 415 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65418 ImplicationChecksByTransitivity, 45.8s TimeCoverageRelationStatistics Valid=28073, Invalid=145399, Unknown=0, NotChecked=0, Total=173472 [2023-12-20 14:13:41,357 INFO L413 NwaCegarLoop]: 1749 mSDtfsCounter, 32655 mSDsluCounter, 41826 mSDsCounter, 0 mSdLazyCounter, 19388 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32655 SdHoareTripleChecker+Valid, 43575 SdHoareTripleChecker+Invalid, 19564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 19388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2023-12-20 14:13:41,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32655 Valid, 43575 Invalid, 19564 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [176 Valid, 19388 Invalid, 0 Unknown, 0 Unchecked, 10.5s Time] [2023-12-20 14:13:41,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154982 states. [2023-12-20 14:13:46,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154982 to 92956. [2023-12-20 14:13:46,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92956 states, 92954 states have (on average 1.2352776642210126) internal successors, (114824), 92955 states have internal predecessors, (114824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:13:46,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92956 states to 92956 states and 114824 transitions. [2023-12-20 14:13:46,476 INFO L78 Accepts]: Start accepts. Automaton has 92956 states and 114824 transitions. Word has length 103 [2023-12-20 14:13:46,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:13:46,476 INFO L495 AbstractCegarLoop]: Abstraction has 92956 states and 114824 transitions. [2023-12-20 14:13:46,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 4.136363636363637) internal successors, (273), 66 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:13:46,476 INFO L276 IsEmpty]: Start isEmpty. Operand 92956 states and 114824 transitions. [2023-12-20 14:13:46,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-20 14:13:46,480 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:13:46,480 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 14:13:46,487 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-20 14:13:46,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:13:46,690 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:13:46,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:13:46,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1960053824, now seen corresponding path program 1 times [2023-12-20 14:13:46,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:13:46,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447661421] [2023-12-20 14:13:46,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:13:46,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:13:46,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:13:46,942 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:13:46,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:13:46,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447661421] [2023-12-20 14:13:46,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447661421] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:13:46,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:13:46,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 14:13:46,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557562241] [2023-12-20 14:13:46,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:13:46,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 14:13:46,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:13:46,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 14:13:46,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 14:13:46,943 INFO L87 Difference]: Start difference. First operand 92956 states and 114824 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:13:53,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:13:53,639 INFO L93 Difference]: Finished difference Result 95215 states and 118223 transitions. [2023-12-20 14:13:53,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 14:13:53,640 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2023-12-20 14:13:53,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:13:53,732 INFO L225 Difference]: With dead ends: 95215 [2023-12-20 14:13:53,732 INFO L226 Difference]: Without dead ends: 93711 [2023-12-20 14:13:53,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-20 14:13:53,742 INFO L413 NwaCegarLoop]: 810 mSDtfsCounter, 2291 mSDsluCounter, 1062 mSDsCounter, 0 mSdLazyCounter, 2507 mSolverCounterSat, 406 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2291 SdHoareTripleChecker+Valid, 1872 SdHoareTripleChecker+Invalid, 2913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 406 IncrementalHoareTripleChecker+Valid, 2507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-20 14:13:53,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2291 Valid, 1872 Invalid, 2913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [406 Valid, 2507 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-20 14:13:53,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93711 states. [2023-12-20 14:13:58,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93711 to 93707. [2023-12-20 14:13:58,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93707 states, 93705 states have (on average 1.233456058908276) internal successors, (115581), 93706 states have internal predecessors, (115581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:13:58,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93707 states to 93707 states and 115581 transitions. [2023-12-20 14:13:58,587 INFO L78 Accepts]: Start accepts. Automaton has 93707 states and 115581 transitions. Word has length 135 [2023-12-20 14:13:58,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:13:58,587 INFO L495 AbstractCegarLoop]: Abstraction has 93707 states and 115581 transitions. [2023-12-20 14:13:58,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:13:58,587 INFO L276 IsEmpty]: Start isEmpty. Operand 93707 states and 115581 transitions. [2023-12-20 14:13:58,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-20 14:13:58,603 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:13:58,603 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:13:58,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-12-20 14:13:58,603 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:13:58,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:13:58,616 INFO L85 PathProgramCache]: Analyzing trace with hash -206892047, now seen corresponding path program 1 times [2023-12-20 14:13:58,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:13:58,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451815944] [2023-12-20 14:13:58,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:13:58,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:13:58,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:13:59,190 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 29 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:13:59,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:13:59,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451815944] [2023-12-20 14:13:59,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451815944] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:13:59,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321149641] [2023-12-20 14:13:59,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:13:59,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:13:59,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:13:59,192 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:13:59,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-20 14:13:59,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:13:59,349 INFO L262 TraceCheckSpWp]: Trace formula consists of 699 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-20 14:13:59,362 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:13:59,975 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 76 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:13:59,976 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:14:01,165 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 55 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:14:01,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [321149641] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 14:14:01,165 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 14:14:01,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2023-12-20 14:14:01,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133170757] [2023-12-20 14:14:01,166 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 14:14:01,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-20 14:14:01,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:14:01,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-20 14:14:01,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=958, Unknown=0, NotChecked=0, Total=1056 [2023-12-20 14:14:01,167 INFO L87 Difference]: Start difference. First operand 93707 states and 115581 transitions. Second operand has 33 states, 33 states have (on average 12.909090909090908) internal successors, (426), 33 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:14:13,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:14:13,443 INFO L93 Difference]: Finished difference Result 233247 states and 288142 transitions. [2023-12-20 14:14:13,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2023-12-20 14:14:13,444 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 12.909090909090908) internal successors, (426), 33 states have internal predecessors, (426), 0 states have call successors, (0), 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 157 [2023-12-20 14:14:13,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:14:13,635 INFO L225 Difference]: With dead ends: 233247 [2023-12-20 14:14:13,636 INFO L226 Difference]: Without dead ends: 164495 [2023-12-20 14:14:13,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 425 GetRequests, 295 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4876 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=3083, Invalid=14209, Unknown=0, NotChecked=0, Total=17292 [2023-12-20 14:14:13,682 INFO L413 NwaCegarLoop]: 1578 mSDtfsCounter, 20839 mSDsluCounter, 22211 mSDsCounter, 0 mSdLazyCounter, 2395 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20839 SdHoareTripleChecker+Valid, 23789 SdHoareTripleChecker+Invalid, 2477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 2395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:14:13,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20839 Valid, 23789 Invalid, 2477 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [82 Valid, 2395 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-20 14:14:13,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164495 states. [2023-12-20 14:14:19,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164495 to 91179. [2023-12-20 14:14:19,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91179 states, 91177 states have (on average 1.2244096647180758) internal successors, (111638), 91178 states have internal predecessors, (111638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:14:19,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91179 states to 91179 states and 111638 transitions. [2023-12-20 14:14:19,189 INFO L78 Accepts]: Start accepts. Automaton has 91179 states and 111638 transitions. Word has length 157 [2023-12-20 14:14:19,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:14:19,189 INFO L495 AbstractCegarLoop]: Abstraction has 91179 states and 111638 transitions. [2023-12-20 14:14:19,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 12.909090909090908) internal successors, (426), 33 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:14:19,189 INFO L276 IsEmpty]: Start isEmpty. Operand 91179 states and 111638 transitions. [2023-12-20 14:14:19,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-12-20 14:14:19,202 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:14:19,202 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:14:19,210 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-20 14:14:19,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-12-20 14:14:19,408 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:14:19,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:14:19,409 INFO L85 PathProgramCache]: Analyzing trace with hash -131074223, now seen corresponding path program 1 times [2023-12-20 14:14:19,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:14:19,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306307152] [2023-12-20 14:14:19,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:14:19,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:14:19,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:14:19,997 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 40 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:14:19,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:14:19,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306307152] [2023-12-20 14:14:19,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306307152] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:14:19,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754158049] [2023-12-20 14:14:19,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:14:19,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:14:19,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:14:19,998 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:14:19,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-20 14:14:20,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:14:20,143 INFO L262 TraceCheckSpWp]: Trace formula consists of 701 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-20 14:14:20,145 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:14:20,886 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 42 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:14:20,886 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:14:22,468 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 40 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:14:22,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754158049] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 14:14:22,468 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 14:14:22,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 26 [2023-12-20 14:14:22,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164663638] [2023-12-20 14:14:22,468 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 14:14:22,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-20 14:14:22,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:14:22,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-20 14:14:22,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=594, Unknown=0, NotChecked=0, Total=702 [2023-12-20 14:14:22,470 INFO L87 Difference]: Start difference. First operand 91179 states and 111638 transitions. Second operand has 27 states, 27 states have (on average 12.814814814814815) internal successors, (346), 26 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:14:28,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:14:28,186 INFO L93 Difference]: Finished difference Result 148217 states and 182013 transitions. [2023-12-20 14:14:28,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-20 14:14:28,186 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 12.814814814814815) internal successors, (346), 26 states have internal predecessors, (346), 0 states have call successors, (0), 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 158 [2023-12-20 14:14:28,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:14:28,318 INFO L225 Difference]: With dead ends: 148217 [2023-12-20 14:14:28,319 INFO L226 Difference]: Without dead ends: 103531 [2023-12-20 14:14:28,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 300 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=456, Invalid=1524, Unknown=0, NotChecked=0, Total=1980 [2023-12-20 14:14:28,353 INFO L413 NwaCegarLoop]: 1549 mSDtfsCounter, 10686 mSDsluCounter, 12513 mSDsCounter, 0 mSdLazyCounter, 792 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10686 SdHoareTripleChecker+Valid, 14062 SdHoareTripleChecker+Invalid, 809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 14:14:28,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10686 Valid, 14062 Invalid, 809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 792 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 14:14:28,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103531 states. [2023-12-20 14:14:33,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103531 to 91179. [2023-12-20 14:14:33,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91179 states, 91177 states have (on average 1.218947760948485) internal successors, (111140), 91178 states have internal predecessors, (111140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:14:33,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91179 states to 91179 states and 111140 transitions. [2023-12-20 14:14:33,840 INFO L78 Accepts]: Start accepts. Automaton has 91179 states and 111140 transitions. Word has length 158 [2023-12-20 14:14:33,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:14:33,841 INFO L495 AbstractCegarLoop]: Abstraction has 91179 states and 111140 transitions. [2023-12-20 14:14:33,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 12.814814814814815) internal successors, (346), 26 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:14:33,841 INFO L276 IsEmpty]: Start isEmpty. Operand 91179 states and 111140 transitions. [2023-12-20 14:14:33,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-12-20 14:14:33,852 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:14:33,852 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:14:33,857 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-12-20 14:14:34,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-12-20 14:14:34,057 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:14:34,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:14:34,058 INFO L85 PathProgramCache]: Analyzing trace with hash -2022996503, now seen corresponding path program 1 times [2023-12-20 14:14:34,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:14:34,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974726766] [2023-12-20 14:14:34,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:14:34,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:14:34,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:14:34,721 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 47 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:14:34,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:14:34,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974726766] [2023-12-20 14:14:34,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974726766] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:14:34,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377669128] [2023-12-20 14:14:34,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:14:34,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:14:34,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:14:34,722 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:14:34,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-20 14:14:34,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:14:34,872 INFO L262 TraceCheckSpWp]: Trace formula consists of 701 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-20 14:14:34,874 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:14:35,783 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 27 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:14:35,783 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:14:37,370 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 21 proven. 102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:14:37,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1377669128] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 14:14:37,371 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 14:14:37,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 31 [2023-12-20 14:14:37,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071317141] [2023-12-20 14:14:37,371 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 14:14:37,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-20 14:14:37,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:14:37,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-20 14:14:37,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=891, Unknown=0, NotChecked=0, Total=992 [2023-12-20 14:14:37,373 INFO L87 Difference]: Start difference. First operand 91179 states and 111140 transitions. Second operand has 32 states, 32 states have (on average 14.09375) internal successors, (451), 31 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:14:47,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:14:47,047 INFO L93 Difference]: Finished difference Result 170681 states and 208350 transitions. [2023-12-20 14:14:47,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2023-12-20 14:14:47,048 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 14.09375) internal successors, (451), 31 states have internal predecessors, (451), 0 states have call successors, (0), 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 158 [2023-12-20 14:14:47,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:14:47,203 INFO L225 Difference]: With dead ends: 170681 [2023-12-20 14:14:47,203 INFO L226 Difference]: Without dead ends: 103971 [2023-12-20 14:14:47,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2153 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1750, Invalid=7756, Unknown=0, NotChecked=0, Total=9506 [2023-12-20 14:14:47,243 INFO L413 NwaCegarLoop]: 1565 mSDtfsCounter, 21970 mSDsluCounter, 17663 mSDsCounter, 0 mSdLazyCounter, 2317 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21970 SdHoareTripleChecker+Valid, 19228 SdHoareTripleChecker+Invalid, 2357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 2317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:14:47,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21970 Valid, 19228 Invalid, 2357 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [40 Valid, 2317 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-20 14:14:47,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103971 states. [2023-12-20 14:14:53,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103971 to 91179. [2023-12-20 14:14:53,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91179 states, 91177 states have (on average 1.2075304078879543) internal successors, (110099), 91178 states have internal predecessors, (110099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:14:53,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91179 states to 91179 states and 110099 transitions. [2023-12-20 14:14:53,296 INFO L78 Accepts]: Start accepts. Automaton has 91179 states and 110099 transitions. Word has length 158 [2023-12-20 14:14:53,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:14:53,296 INFO L495 AbstractCegarLoop]: Abstraction has 91179 states and 110099 transitions. [2023-12-20 14:14:53,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 14.09375) internal successors, (451), 31 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:14:53,296 INFO L276 IsEmpty]: Start isEmpty. Operand 91179 states and 110099 transitions. [2023-12-20 14:14:53,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-12-20 14:14:53,308 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:14:53,308 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 14:14:53,316 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-20 14:14:53,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-12-20 14:14:53,513 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:14:53,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:14:53,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1219131585, now seen corresponding path program 1 times [2023-12-20 14:14:53,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:14:53,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587226206] [2023-12-20 14:14:53,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:14:53,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:14:53,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:14:54,081 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 13 proven. 113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:14:54,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:14:54,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587226206] [2023-12-20 14:14:54,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587226206] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:14:54,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471603651] [2023-12-20 14:14:54,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:14:54,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:14:54,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:14:54,083 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:14:54,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-20 14:14:54,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:14:54,250 INFO L262 TraceCheckSpWp]: Trace formula consists of 705 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-20 14:14:54,252 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:14:55,181 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 21 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:14:55,181 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:14:56,844 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 13 proven. 113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:14:56,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [471603651] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 14:14:56,844 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 14:14:56,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 28 [2023-12-20 14:14:56,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39221196] [2023-12-20 14:14:56,844 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 14:14:56,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-20 14:14:56,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:14:56,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-20 14:14:56,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=684, Unknown=0, NotChecked=0, Total=812 [2023-12-20 14:14:56,845 INFO L87 Difference]: Start difference. First operand 91179 states and 110099 transitions. Second operand has 29 states, 29 states have (on average 14.172413793103448) internal successors, (411), 28 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:15:02,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:15:02,966 INFO L93 Difference]: Finished difference Result 142363 states and 172072 transitions. [2023-12-20 14:15:02,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-20 14:15:02,967 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 14.172413793103448) internal successors, (411), 28 states have internal predecessors, (411), 0 states have call successors, (0), 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 160 [2023-12-20 14:15:02,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:15:03,065 INFO L225 Difference]: With dead ends: 142363 [2023-12-20 14:15:03,065 INFO L226 Difference]: Without dead ends: 91943 [2023-12-20 14:15:03,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 303 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=474, Invalid=1506, Unknown=0, NotChecked=0, Total=1980 [2023-12-20 14:15:03,098 INFO L413 NwaCegarLoop]: 1548 mSDtfsCounter, 16639 mSDsluCounter, 11012 mSDsCounter, 0 mSdLazyCounter, 691 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16639 SdHoareTripleChecker+Valid, 12560 SdHoareTripleChecker+Invalid, 714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 14:15:03,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16639 Valid, 12560 Invalid, 714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 691 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 14:15:03,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91943 states. [2023-12-20 14:15:09,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91943 to 91179. [2023-12-20 14:15:09,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91179 states, 91177 states have (on average 1.2004233523805345) internal successors, (109451), 91178 states have internal predecessors, (109451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:15:09,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91179 states to 91179 states and 109451 transitions. [2023-12-20 14:15:09,350 INFO L78 Accepts]: Start accepts. Automaton has 91179 states and 109451 transitions. Word has length 160 [2023-12-20 14:15:09,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:15:09,350 INFO L495 AbstractCegarLoop]: Abstraction has 91179 states and 109451 transitions. [2023-12-20 14:15:09,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 14.172413793103448) internal successors, (411), 28 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:15:09,350 INFO L276 IsEmpty]: Start isEmpty. Operand 91179 states and 109451 transitions. [2023-12-20 14:15:09,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-20 14:15:09,361 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:15:09,361 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 14:15:09,372 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-20 14:15:09,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-12-20 14:15:09,566 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:15:09,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:15:09,567 INFO L85 PathProgramCache]: Analyzing trace with hash -491598411, now seen corresponding path program 1 times [2023-12-20 14:15:09,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:15:09,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439571881] [2023-12-20 14:15:09,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:15:09,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:15:09,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:15:10,454 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 13 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:15:10,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:15:10,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439571881] [2023-12-20 14:15:10,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439571881] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:15:10,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2110001716] [2023-12-20 14:15:10,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:15:10,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:15:10,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:15:10,459 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:15:10,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-20 14:15:10,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:15:10,621 INFO L262 TraceCheckSpWp]: Trace formula consists of 707 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-20 14:15:10,623 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:15:13,216 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 13 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:15:13,216 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:15:16,291 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 13 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:15:16,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2110001716] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 14:15:16,291 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 14:15:16,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 23, 22] total 62 [2023-12-20 14:15:16,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485322349] [2023-12-20 14:15:16,291 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 14:15:16,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2023-12-20 14:15:16,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:15:16,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2023-12-20 14:15:16,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=3431, Unknown=0, NotChecked=0, Total=3782 [2023-12-20 14:15:16,293 INFO L87 Difference]: Start difference. First operand 91179 states and 109451 transitions. Second operand has 62 states, 62 states have (on average 7.580645161290323) internal successors, (470), 62 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:16:24,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:16:24,198 INFO L93 Difference]: Finished difference Result 419090 states and 501062 transitions. [2023-12-20 14:16:24,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 290 states. [2023-12-20 14:16:24,199 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 7.580645161290323) internal successors, (470), 62 states have internal predecessors, (470), 0 states have call successors, (0), 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 161 [2023-12-20 14:16:24,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:16:24,791 INFO L225 Difference]: With dead ends: 419090 [2023-12-20 14:16:24,791 INFO L226 Difference]: Without dead ends: 368970 [2023-12-20 14:16:24,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 626 GetRequests, 280 SyntacticMatches, 1 SemanticMatches, 345 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47846 ImplicationChecksByTransitivity, 38.2s TimeCoverageRelationStatistics Valid=17043, Invalid=103019, Unknown=0, NotChecked=0, Total=120062 [2023-12-20 14:16:24,849 INFO L413 NwaCegarLoop]: 1637 mSDtfsCounter, 24228 mSDsluCounter, 40234 mSDsCounter, 0 mSdLazyCounter, 6834 mSolverCounterSat, 235 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24228 SdHoareTripleChecker+Valid, 41871 SdHoareTripleChecker+Invalid, 7069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 235 IncrementalHoareTripleChecker+Valid, 6834 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:16:24,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24228 Valid, 41871 Invalid, 7069 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [235 Valid, 6834 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-12-20 14:16:25,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368970 states. [2023-12-20 14:16:46,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368970 to 274523. [2023-12-20 14:16:47,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274523 states, 274521 states have (on average 1.197361950451878) internal successors, (328701), 274522 states have internal predecessors, (328701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:16:47,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274523 states to 274523 states and 328701 transitions. [2023-12-20 14:16:47,663 INFO L78 Accepts]: Start accepts. Automaton has 274523 states and 328701 transitions. Word has length 161 [2023-12-20 14:16:47,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:16:47,664 INFO L495 AbstractCegarLoop]: Abstraction has 274523 states and 328701 transitions. [2023-12-20 14:16:47,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 7.580645161290323) internal successors, (470), 62 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:16:47,664 INFO L276 IsEmpty]: Start isEmpty. Operand 274523 states and 328701 transitions. [2023-12-20 14:16:47,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-20 14:16:47,694 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:16:47,694 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 14:16:47,699 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-12-20 14:16:47,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:16:47,898 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:16:47,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:16:47,898 INFO L85 PathProgramCache]: Analyzing trace with hash -92855023, now seen corresponding path program 1 times [2023-12-20 14:16:47,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:16:47,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003074988] [2023-12-20 14:16:47,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:16:47,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:16:47,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:16:48,911 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 41 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:16:48,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:16:48,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003074988] [2023-12-20 14:16:48,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003074988] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:16:48,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192010543] [2023-12-20 14:16:48,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:16:48,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:16:48,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:16:48,924 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:16:48,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-20 14:16:49,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:16:49,103 INFO L262 TraceCheckSpWp]: Trace formula consists of 707 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-20 14:16:49,106 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:16:50,362 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 41 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:16:50,362 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:16:52,639 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 41 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:16:52,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [192010543] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 14:16:52,640 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 14:16:52,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 19] total 53 [2023-12-20 14:16:52,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394081700] [2023-12-20 14:16:52,640 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 14:16:52,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-12-20 14:16:52,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:16:52,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-12-20 14:16:52,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=258, Invalid=2498, Unknown=0, NotChecked=0, Total=2756 [2023-12-20 14:16:52,643 INFO L87 Difference]: Start difference. First operand 274523 states and 328701 transitions. Second operand has 53 states, 53 states have (on average 8.264150943396226) internal successors, (438), 53 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:17:29,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:17:29,377 INFO L93 Difference]: Finished difference Result 554700 states and 663452 transitions. [2023-12-20 14:17:29,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2023-12-20 14:17:29,378 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 8.264150943396226) internal successors, (438), 53 states have internal predecessors, (438), 0 states have call successors, (0), 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 161 [2023-12-20 14:17:29,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:17:30,264 INFO L225 Difference]: With dead ends: 554700 [2023-12-20 14:17:30,264 INFO L226 Difference]: Without dead ends: 476523 [2023-12-20 14:17:30,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3435 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=2410, Invalid=11870, Unknown=0, NotChecked=0, Total=14280 [2023-12-20 14:17:30,359 INFO L413 NwaCegarLoop]: 1599 mSDtfsCounter, 20501 mSDsluCounter, 25787 mSDsCounter, 0 mSdLazyCounter, 2337 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20501 SdHoareTripleChecker+Valid, 27386 SdHoareTripleChecker+Invalid, 2480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 2337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-20 14:17:30,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20501 Valid, 27386 Invalid, 2480 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [143 Valid, 2337 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-20 14:17:30,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476523 states. [2023-12-20 14:17:59,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476523 to 342939. [2023-12-20 14:17:59,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342939 states, 342937 states have (on average 1.1935545012640805) internal successors, (409314), 342938 states have internal predecessors, (409314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:18:00,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342939 states to 342939 states and 409314 transitions. [2023-12-20 14:18:00,652 INFO L78 Accepts]: Start accepts. Automaton has 342939 states and 409314 transitions. Word has length 161 [2023-12-20 14:18:00,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:18:00,652 INFO L495 AbstractCegarLoop]: Abstraction has 342939 states and 409314 transitions. [2023-12-20 14:18:00,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 8.264150943396226) internal successors, (438), 53 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:18:00,652 INFO L276 IsEmpty]: Start isEmpty. Operand 342939 states and 409314 transitions. [2023-12-20 14:18:00,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-20 14:18:00,668 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:18:00,668 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 14:18:00,686 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-20 14:18:00,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:18:00,873 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:18:00,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:18:00,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1481785931, now seen corresponding path program 1 times [2023-12-20 14:18:00,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:18:00,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813701264] [2023-12-20 14:18:00,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:18:00,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:18:00,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:18:02,361 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 50 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:18:02,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:18:02,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813701264] [2023-12-20 14:18:02,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813701264] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:18:02,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265989638] [2023-12-20 14:18:02,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:18:02,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:18:02,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:18:02,363 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:18:02,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-20 14:18:02,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:18:02,548 INFO L262 TraceCheckSpWp]: Trace formula consists of 707 conjuncts, 39 conjunts are in the unsatisfiable core [2023-12-20 14:18:02,550 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:18:04,732 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 50 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:18:04,732 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:18:09,396 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 50 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:18:09,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265989638] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 14:18:09,396 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 14:18:09,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 69 [2023-12-20 14:18:09,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529527964] [2023-12-20 14:18:09,396 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 14:18:09,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2023-12-20 14:18:09,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:18:09,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2023-12-20 14:18:09,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=372, Invalid=4320, Unknown=0, NotChecked=0, Total=4692 [2023-12-20 14:18:09,402 INFO L87 Difference]: Start difference. First operand 342939 states and 409314 transitions. Second operand has 69 states, 69 states have (on average 6.202898550724638) internal successors, (428), 69 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:22:58,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:22:58,379 INFO L93 Difference]: Finished difference Result 1187768 states and 1411819 transitions. [2023-12-20 14:22:58,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 490 states. [2023-12-20 14:22:58,380 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 6.202898550724638) internal successors, (428), 69 states have internal predecessors, (428), 0 states have call successors, (0), 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 161 [2023-12-20 14:22:58,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:23:01,027 INFO L225 Difference]: With dead ends: 1187768 [2023-12-20 14:23:01,027 INFO L226 Difference]: Without dead ends: 1086912 [2023-12-20 14:23:01,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 829 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 550 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132046 ImplicationChecksByTransitivity, 171.6s TimeCoverageRelationStatistics Valid=33987, Invalid=270165, Unknown=0, NotChecked=0, Total=304152 [2023-12-20 14:23:01,361 INFO L413 NwaCegarLoop]: 1793 mSDtfsCounter, 34647 mSDsluCounter, 35811 mSDsCounter, 0 mSdLazyCounter, 11332 mSolverCounterSat, 623 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34647 SdHoareTripleChecker+Valid, 37604 SdHoareTripleChecker+Invalid, 11955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 623 IncrementalHoareTripleChecker+Valid, 11332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.9s IncrementalHoareTripleChecker+Time [2023-12-20 14:23:01,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34647 Valid, 37604 Invalid, 11955 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [623 Valid, 11332 Invalid, 0 Unknown, 0 Unchecked, 12.9s Time] [2023-12-20 14:23:02,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1086912 states.