/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/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 13:06:16,774 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 13:06:16,829 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-21 13:06:16,834 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 13:06:16,835 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 13:06:16,860 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 13:06:16,860 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 13:06:16,860 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 13:06:16,861 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 13:06:16,863 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 13:06:16,864 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 13:06:16,864 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 13:06:16,864 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 13:06:16,865 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 13:06:16,865 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 13:06:16,865 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 13:06:16,865 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 13:06:16,865 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 13:06:16,866 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 13:06:16,866 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 13:06:16,866 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 13:06:16,866 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 13:06:16,866 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 13:06:16,866 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 13:06:16,867 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 13:06:16,867 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 13:06:16,867 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 13:06:16,867 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 13:06:16,867 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 13:06:16,868 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 13:06:16,868 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 13:06:16,868 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 13:06:16,868 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 13:06:16,869 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 13:06:16,869 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 13:06:16,869 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 13:06:16,869 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 13:06:16,869 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 13:06:16,869 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 13:06:16,869 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 13:06:16,869 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 13:06:16,869 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 13:06:16,869 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 13:06:16,870 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 13:06:17,052 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 13:06:17,069 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 13:06:17,071 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 13:06:17,072 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 13:06:17,072 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 13:06:17,073 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2023-12-21 13:06:18,006 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 13:06:18,187 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 13:06:18,187 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2023-12-21 13:06:18,204 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5818fa7ca/47f59f70dd4547b1879dfc65b7459601/FLAGe999f054e [2023-12-21 13:06:18,217 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5818fa7ca/47f59f70dd4547b1879dfc65b7459601 [2023-12-21 13:06:18,221 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 13:06:18,222 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 13:06:18,223 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 13:06:18,223 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 13:06:18,228 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 13:06:18,228 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:06:18" (1/1) ... [2023-12-21 13:06:18,229 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39204ac4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:06:18, skipping insertion in model container [2023-12-21 13:06:18,229 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:06:18" (1/1) ... [2023-12-21 13:06:18,269 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 13:06:18,459 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[12650,12663] [2023-12-21 13:06:18,520 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 13:06:18,540 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 13:06:18,591 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[12650,12663] [2023-12-21 13:06:18,651 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 13:06:18,664 INFO L206 MainTranslator]: Completed translation [2023-12-21 13:06:18,664 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:06:18 WrapperNode [2023-12-21 13:06:18,664 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 13:06:18,665 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 13:06:18,665 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 13:06:18,665 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 13:06:18,670 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:06:18" (1/1) ... [2023-12-21 13:06:18,684 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:06:18" (1/1) ... [2023-12-21 13:06:18,731 INFO L138 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1315 [2023-12-21 13:06:18,732 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 13:06:18,732 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 13:06:18,732 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 13:06:18,732 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 13:06:18,740 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:06:18" (1/1) ... [2023-12-21 13:06:18,740 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:06:18" (1/1) ... [2023-12-21 13:06:18,745 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:06:18" (1/1) ... [2023-12-21 13:06:18,761 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]. [2023-12-21 13:06:18,761 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:06:18" (1/1) ... [2023-12-21 13:06:18,762 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:06:18" (1/1) ... [2023-12-21 13:06:18,775 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:06:18" (1/1) ... [2023-12-21 13:06:18,780 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:06:18" (1/1) ... [2023-12-21 13:06:18,784 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:06:18" (1/1) ... [2023-12-21 13:06:18,787 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:06:18" (1/1) ... [2023-12-21 13:06:18,809 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 13:06:18,810 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 13:06:18,810 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 13:06:18,810 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 13:06:18,811 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:06:18" (1/1) ... [2023-12-21 13:06:18,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 13:06:18,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:06:18,841 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) [2023-12-21 13:06:18,860 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 [2023-12-21 13:06:18,863 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 13:06:18,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 13:06:18,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 13:06:18,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 13:06:19,006 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 13:06:19,007 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 13:06:19,749 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 13:06:19,793 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 13:06:19,793 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-21 13:06:19,794 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:06:19 BoogieIcfgContainer [2023-12-21 13:06:19,794 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 13:06:19,795 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 13:06:19,795 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 13:06:19,797 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 13:06:19,797 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 01:06:18" (1/3) ... [2023-12-21 13:06:19,798 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6161eac6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:06:19, skipping insertion in model container [2023-12-21 13:06:19,798 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:06:18" (2/3) ... [2023-12-21 13:06:19,798 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6161eac6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:06:19, skipping insertion in model container [2023-12-21 13:06:19,798 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:06:19" (3/3) ... [2023-12-21 13:06:19,799 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2023-12-21 13:06:19,810 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 13:06:19,810 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 13:06:19,850 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 13:06:19,854 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;@27ddc83f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 13:06:19,854 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 13:06:19,859 INFO L276 IsEmpty]: Start isEmpty. Operand has 312 states, 310 states have (on average 1.793548387096774) internal successors, (556), 311 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:06:19,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-21 13:06:19,868 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:06:19,869 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:06:19,869 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:06:19,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:06:19,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1927164114, now seen corresponding path program 1 times [2023-12-21 13:06:19,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:06:19,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396333126] [2023-12-21 13:06:19,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:06:19,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:06:20,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:06:20,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:06:20,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:06:20,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396333126] [2023-12-21 13:06:20,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396333126] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:06:20,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:06:20,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:06:20,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392896256] [2023-12-21 13:06:20,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:06:20,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:06:20,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:06:20,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:06:20,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:06:20,396 INFO L87 Difference]: Start difference. First operand has 312 states, 310 states have (on average 1.793548387096774) internal successors, (556), 311 states have internal predecessors, (556), 0 states have call successors, (0), 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 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:06:20,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:06:20,509 INFO L93 Difference]: Finished difference Result 573 states and 993 transitions. [2023-12-21 13:06:20,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:06:20,524 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2023-12-21 13:06:20,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:06:20,534 INFO L225 Difference]: With dead ends: 573 [2023-12-21 13:06:20,534 INFO L226 Difference]: Without dead ends: 433 [2023-12-21 13:06:20,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:06:20,542 INFO L413 NwaCegarLoop]: 546 mSDtfsCounter, 219 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 1042 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:06:20,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 1042 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:06:20,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2023-12-21 13:06:20,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 430. [2023-12-21 13:06:20,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 429 states have (on average 1.6806526806526807) internal successors, (721), 429 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:06:20,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 721 transitions. [2023-12-21 13:06:20,588 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 721 transitions. Word has length 97 [2023-12-21 13:06:20,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:06:20,589 INFO L495 AbstractCegarLoop]: Abstraction has 430 states and 721 transitions. [2023-12-21 13:06:20,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:06:20,589 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 721 transitions. [2023-12-21 13:06:20,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-21 13:06:20,592 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:06:20,592 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:06:20,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-21 13:06:20,592 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:06:20,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:06:20,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1467173299, now seen corresponding path program 1 times [2023-12-21 13:06:20,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:06:20,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545131890] [2023-12-21 13:06:20,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:06:20,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:06:20,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:06:20,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:06:20,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:06:20,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545131890] [2023-12-21 13:06:20,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545131890] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:06:20,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:06:20,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:06:20,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718143964] [2023-12-21 13:06:20,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:06:20,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:06:20,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:06:20,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:06:20,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:06:20,771 INFO L87 Difference]: Start difference. First operand 430 states and 721 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:06:20,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:06:20,800 INFO L93 Difference]: Finished difference Result 920 states and 1537 transitions. [2023-12-21 13:06:20,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:06:20,800 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 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 [2023-12-21 13:06:20,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:06:20,807 INFO L225 Difference]: With dead ends: 920 [2023-12-21 13:06:20,808 INFO L226 Difference]: Without dead ends: 666 [2023-12-21 13:06:20,811 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 [2023-12-21 13:06:20,812 INFO L413 NwaCegarLoop]: 519 mSDtfsCounter, 200 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 1014 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:06:20,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 1014 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:06:20,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2023-12-21 13:06:20,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 662. [2023-12-21 13:06:20,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 661 states have (on average 1.6717095310136156) internal successors, (1105), 661 states have internal predecessors, (1105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:06:20,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 1105 transitions. [2023-12-21 13:06:20,855 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 1105 transitions. Word has length 100 [2023-12-21 13:06:20,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:06:20,855 INFO L495 AbstractCegarLoop]: Abstraction has 662 states and 1105 transitions. [2023-12-21 13:06:20,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:06:20,855 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 1105 transitions. [2023-12-21 13:06:20,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-21 13:06:20,858 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:06:20,859 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:06:20,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-21 13:06:20,859 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:06:20,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:06:20,859 INFO L85 PathProgramCache]: Analyzing trace with hash 696229554, now seen corresponding path program 1 times [2023-12-21 13:06:20,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:06:20,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517168172] [2023-12-21 13:06:20,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:06:20,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:06:20,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:06:20,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:06:20,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:06:20,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517168172] [2023-12-21 13:06:20,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517168172] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:06:20,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:06:20,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:06:20,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765589579] [2023-12-21 13:06:20,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:06:20,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:06:20,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:06:20,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:06:20,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:06:20,990 INFO L87 Difference]: Start difference. First operand 662 states and 1105 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:06:21,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:06:21,021 INFO L93 Difference]: Finished difference Result 1598 states and 2655 transitions. [2023-12-21 13:06:21,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:06:21,021 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2023-12-21 13:06:21,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:06:21,026 INFO L225 Difference]: With dead ends: 1598 [2023-12-21 13:06:21,026 INFO L226 Difference]: Without dead ends: 1112 [2023-12-21 13:06:21,028 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 [2023-12-21 13:06:21,031 INFO L413 NwaCegarLoop]: 519 mSDtfsCounter, 194 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 1015 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:06:21,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 1015 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:06:21,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1112 states. [2023-12-21 13:06:21,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1112 to 1106. [2023-12-21 13:06:21,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1106 states, 1105 states have (on average 1.6588235294117648) internal successors, (1833), 1105 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:06:21,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1106 states to 1106 states and 1833 transitions. [2023-12-21 13:06:21,055 INFO L78 Accepts]: Start accepts. Automaton has 1106 states and 1833 transitions. Word has length 103 [2023-12-21 13:06:21,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:06:21,058 INFO L495 AbstractCegarLoop]: Abstraction has 1106 states and 1833 transitions. [2023-12-21 13:06:21,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:06:21,062 INFO L276 IsEmpty]: Start isEmpty. Operand 1106 states and 1833 transitions. [2023-12-21 13:06:21,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-21 13:06:21,065 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:06:21,065 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:06:21,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-21 13:06:21,065 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:06:21,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:06:21,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1560949449, now seen corresponding path program 1 times [2023-12-21 13:06:21,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:06:21,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99674223] [2023-12-21 13:06:21,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:06:21,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:06:21,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:06:21,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:06:21,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:06:21,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99674223] [2023-12-21 13:06:21,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99674223] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:06:21,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:06:21,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:06:21,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920348133] [2023-12-21 13:06:21,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:06:21,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:06:21,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:06:21,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:06:21,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:06:21,170 INFO L87 Difference]: Start difference. First operand 1106 states and 1833 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:06:21,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:06:21,230 INFO L93 Difference]: Finished difference Result 2894 states and 4771 transitions. [2023-12-21 13:06:21,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:06:21,230 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2023-12-21 13:06:21,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:06:21,236 INFO L225 Difference]: With dead ends: 2894 [2023-12-21 13:06:21,236 INFO L226 Difference]: Without dead ends: 1964 [2023-12-21 13:06:21,239 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 [2023-12-21 13:06:21,243 INFO L413 NwaCegarLoop]: 519 mSDtfsCounter, 188 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 1016 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:06:21,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 1016 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:06:21,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1964 states. [2023-12-21 13:06:21,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1964 to 1954. [2023-12-21 13:06:21,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1954 states, 1953 states have (on average 1.6431131592421915) internal successors, (3209), 1953 states have internal predecessors, (3209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:06:21,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1954 states to 1954 states and 3209 transitions. [2023-12-21 13:06:21,278 INFO L78 Accepts]: Start accepts. Automaton has 1954 states and 3209 transitions. Word has length 106 [2023-12-21 13:06:21,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:06:21,278 INFO L495 AbstractCegarLoop]: Abstraction has 1954 states and 3209 transitions. [2023-12-21 13:06:21,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:06:21,278 INFO L276 IsEmpty]: Start isEmpty. Operand 1954 states and 3209 transitions. [2023-12-21 13:06:21,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-21 13:06:21,281 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:06:21,281 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:06:21,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-21 13:06:21,281 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:06:21,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:06:21,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1036556746, now seen corresponding path program 1 times [2023-12-21 13:06:21,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:06:21,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493499607] [2023-12-21 13:06:21,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:06:21,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:06:21,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:06:21,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:06:21,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:06:21,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493499607] [2023-12-21 13:06:21,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493499607] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:06:21,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:06:21,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:06:21,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234725313] [2023-12-21 13:06:21,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:06:21,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 13:06:21,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:06:21,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 13:06:21,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 13:06:21,420 INFO L87 Difference]: Start difference. First operand 1954 states and 3209 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:06:21,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:06:21,628 INFO L93 Difference]: Finished difference Result 10210 states and 16885 transitions. [2023-12-21 13:06:21,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 13:06:21,628 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2023-12-21 13:06:21,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:06:21,653 INFO L225 Difference]: With dead ends: 10210 [2023-12-21 13:06:21,653 INFO L226 Difference]: Without dead ends: 8432 [2023-12-21 13:06:21,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-21 13:06:21,658 INFO L413 NwaCegarLoop]: 513 mSDtfsCounter, 1935 mSDsluCounter, 3759 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1935 SdHoareTripleChecker+Valid, 4272 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:06:21,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1935 Valid, 4272 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:06:21,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8432 states. [2023-12-21 13:06:21,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8432 to 3612. [2023-12-21 13:06:21,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3612 states, 3611 states have (on average 1.6405427859318749) internal successors, (5924), 3611 states have internal predecessors, (5924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:06:21,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3612 states to 3612 states and 5924 transitions. [2023-12-21 13:06:21,747 INFO L78 Accepts]: Start accepts. Automaton has 3612 states and 5924 transitions. Word has length 109 [2023-12-21 13:06:21,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:06:21,747 INFO L495 AbstractCegarLoop]: Abstraction has 3612 states and 5924 transitions. [2023-12-21 13:06:21,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:06:21,748 INFO L276 IsEmpty]: Start isEmpty. Operand 3612 states and 5924 transitions. [2023-12-21 13:06:21,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-21 13:06:21,750 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:06:21,750 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:06:21,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-21 13:06:21,750 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:06:21,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:06:21,751 INFO L85 PathProgramCache]: Analyzing trace with hash -2135550104, now seen corresponding path program 1 times [2023-12-21 13:06:21,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:06:21,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671250339] [2023-12-21 13:06:21,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:06:21,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:06:21,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:06:21,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:06:21,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:06:21,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671250339] [2023-12-21 13:06:21,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671250339] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:06:21,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:06:21,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:06:21,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313957555] [2023-12-21 13:06:21,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:06:21,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 13:06:21,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:06:21,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 13:06:21,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 13:06:21,880 INFO L87 Difference]: Start difference. First operand 3612 states and 5924 transitions. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:06:21,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:06:21,960 INFO L93 Difference]: Finished difference Result 10592 states and 17462 transitions. [2023-12-21 13:06:21,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 13:06:21,961 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2023-12-21 13:06:21,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:06:21,981 INFO L225 Difference]: With dead ends: 10592 [2023-12-21 13:06:21,982 INFO L226 Difference]: Without dead ends: 7156 [2023-12-21 13:06:21,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:06:21,989 INFO L413 NwaCegarLoop]: 513 mSDtfsCounter, 658 mSDsluCounter, 1054 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 658 SdHoareTripleChecker+Valid, 1567 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:06:21,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [658 Valid, 1567 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:06:21,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7156 states. [2023-12-21 13:06:22,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7156 to 5367. [2023-12-21 13:06:22,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5367 states, 5366 states have (on average 1.6433097279165114) internal successors, (8818), 5366 states have internal predecessors, (8818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:06:22,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5367 states to 5367 states and 8818 transitions. [2023-12-21 13:06:22,114 INFO L78 Accepts]: Start accepts. Automaton has 5367 states and 8818 transitions. Word has length 110 [2023-12-21 13:06:22,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:06:22,114 INFO L495 AbstractCegarLoop]: Abstraction has 5367 states and 8818 transitions. [2023-12-21 13:06:22,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:06:22,115 INFO L276 IsEmpty]: Start isEmpty. Operand 5367 states and 8818 transitions. [2023-12-21 13:06:22,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-21 13:06:22,118 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:06:22,118 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:06:22,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-21 13:06:22,119 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:06:22,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:06:22,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1840047811, now seen corresponding path program 1 times [2023-12-21 13:06:22,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:06:22,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592466256] [2023-12-21 13:06:22,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:06:22,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:06:22,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:06:22,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:06:22,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:06:22,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592466256] [2023-12-21 13:06:22,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592466256] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:06:22,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:06:22,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:06:22,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220354441] [2023-12-21 13:06:22,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:06:22,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 13:06:22,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:06:22,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 13:06:22,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 13:06:22,208 INFO L87 Difference]: Start difference. First operand 5367 states and 8818 transitions. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:06:22,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:06:22,328 INFO L93 Difference]: Finished difference Result 15764 states and 25968 transitions. [2023-12-21 13:06:22,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 13:06:22,328 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2023-12-21 13:06:22,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:06:22,357 INFO L225 Difference]: With dead ends: 15764 [2023-12-21 13:06:22,357 INFO L226 Difference]: Without dead ends: 10573 [2023-12-21 13:06:22,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:06:22,369 INFO L413 NwaCegarLoop]: 518 mSDtfsCounter, 656 mSDsluCounter, 1213 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 656 SdHoareTripleChecker+Valid, 1731 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:06:22,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [656 Valid, 1731 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:06:22,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10573 states. [2023-12-21 13:06:22,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10573 to 7946. [2023-12-21 13:06:22,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7946 states, 7945 states have (on average 1.6416614222781625) internal successors, (13043), 7945 states have internal predecessors, (13043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:06:22,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7946 states to 7946 states and 13043 transitions. [2023-12-21 13:06:22,606 INFO L78 Accepts]: Start accepts. Automaton has 7946 states and 13043 transitions. Word has length 111 [2023-12-21 13:06:22,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:06:22,607 INFO L495 AbstractCegarLoop]: Abstraction has 7946 states and 13043 transitions. [2023-12-21 13:06:22,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:06:22,607 INFO L276 IsEmpty]: Start isEmpty. Operand 7946 states and 13043 transitions. [2023-12-21 13:06:22,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-21 13:06:22,610 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:06:22,610 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:06:22,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-21 13:06:22,610 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:06:22,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:06:22,611 INFO L85 PathProgramCache]: Analyzing trace with hash -236809664, now seen corresponding path program 1 times [2023-12-21 13:06:22,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:06:22,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810670714] [2023-12-21 13:06:22,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:06:22,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:06:22,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:06:22,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:06:22,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:06:22,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810670714] [2023-12-21 13:06:22,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810670714] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:06:22,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:06:22,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:06:22,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981092746] [2023-12-21 13:06:22,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:06:22,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:06:22,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:06:22,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:06:22,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:06:22,669 INFO L87 Difference]: Start difference. First operand 7946 states and 13043 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:06:22,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:06:22,711 INFO L93 Difference]: Finished difference Result 17497 states and 28778 transitions. [2023-12-21 13:06:22,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:06:22,712 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 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 112 [2023-12-21 13:06:22,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:06:22,729 INFO L225 Difference]: With dead ends: 17497 [2023-12-21 13:06:22,729 INFO L226 Difference]: Without dead ends: 12104 [2023-12-21 13:06:22,738 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 [2023-12-21 13:06:22,740 INFO L413 NwaCegarLoop]: 651 mSDtfsCounter, 199 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 1139 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:06:22,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 1139 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:06:22,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12104 states. [2023-12-21 13:06:22,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12104 to 12102. [2023-12-21 13:06:22,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12102 states, 12101 states have (on average 1.6384596314354185) internal successors, (19827), 12101 states have internal predecessors, (19827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:06:22,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12102 states to 12102 states and 19827 transitions. [2023-12-21 13:06:22,900 INFO L78 Accepts]: Start accepts. Automaton has 12102 states and 19827 transitions. Word has length 112 [2023-12-21 13:06:22,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:06:22,901 INFO L495 AbstractCegarLoop]: Abstraction has 12102 states and 19827 transitions. [2023-12-21 13:06:22,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:06:22,901 INFO L276 IsEmpty]: Start isEmpty. Operand 12102 states and 19827 transitions. [2023-12-21 13:06:22,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-21 13:06:22,903 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:06:22,903 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:06:22,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-21 13:06:22,904 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:06:22,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:06:22,904 INFO L85 PathProgramCache]: Analyzing trace with hash 303435176, now seen corresponding path program 1 times [2023-12-21 13:06:22,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:06:22,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021759748] [2023-12-21 13:06:22,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:06:22,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:06:22,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:06:22,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:06:22,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:06:22,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021759748] [2023-12-21 13:06:22,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021759748] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:06:22,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:06:22,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:06:22,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885169332] [2023-12-21 13:06:22,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:06:22,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:06:22,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:06:22,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:06:22,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:06:22,973 INFO L87 Difference]: Start difference. First operand 12102 states and 19827 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:06:23,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:06:23,027 INFO L93 Difference]: Finished difference Result 23534 states and 38661 transitions. [2023-12-21 13:06:23,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:06:23,028 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 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 112 [2023-12-21 13:06:23,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:06:23,053 INFO L225 Difference]: With dead ends: 23534 [2023-12-21 13:06:23,054 INFO L226 Difference]: Without dead ends: 17012 [2023-12-21 13:06:23,064 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 [2023-12-21 13:06:23,066 INFO L413 NwaCegarLoop]: 625 mSDtfsCounter, 193 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 1114 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:06:23,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 1114 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:06:23,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17012 states. [2023-12-21 13:06:23,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17012 to 17010. [2023-12-21 13:06:23,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17010 states, 17009 states have (on average 1.6357810570874243) internal successors, (27823), 17009 states have internal predecessors, (27823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:06:23,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17010 states to 17010 states and 27823 transitions. [2023-12-21 13:06:23,327 INFO L78 Accepts]: Start accepts. Automaton has 17010 states and 27823 transitions. Word has length 112 [2023-12-21 13:06:23,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:06:23,327 INFO L495 AbstractCegarLoop]: Abstraction has 17010 states and 27823 transitions. [2023-12-21 13:06:23,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:06:23,327 INFO L276 IsEmpty]: Start isEmpty. Operand 17010 states and 27823 transitions. [2023-12-21 13:06:23,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-21 13:06:23,328 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:06:23,329 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:06:23,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-21 13:06:23,329 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:06:23,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:06:23,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1264853297, now seen corresponding path program 1 times [2023-12-21 13:06:23,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:06:23,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843060043] [2023-12-21 13:06:23,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:06:23,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:06:23,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:06:23,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:06:23,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:06:23,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843060043] [2023-12-21 13:06:23,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843060043] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:06:23,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:06:23,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:06:23,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074551669] [2023-12-21 13:06:23,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:06:23,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 13:06:23,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:06:23,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 13:06:23,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 13:06:23,406 INFO L87 Difference]: Start difference. First operand 17010 states and 27823 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:06:23,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:06:23,653 INFO L93 Difference]: Finished difference Result 54369 states and 89163 transitions. [2023-12-21 13:06:23,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 13:06:23,654 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 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 112 [2023-12-21 13:06:23,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:06:23,708 INFO L225 Difference]: With dead ends: 54369 [2023-12-21 13:06:23,708 INFO L226 Difference]: Without dead ends: 37642 [2023-12-21 13:06:23,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:06:23,720 INFO L413 NwaCegarLoop]: 510 mSDtfsCounter, 654 mSDsluCounter, 1002 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 654 SdHoareTripleChecker+Valid, 1512 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:06:23,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [654 Valid, 1512 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:06:23,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37642 states. [2023-12-21 13:06:24,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37642 to 27270. [2023-12-21 13:06:24,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27270 states, 27269 states have (on average 1.6333198870512304) internal successors, (44539), 27269 states have internal predecessors, (44539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:06:24,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27270 states to 27270 states and 44539 transitions. [2023-12-21 13:06:24,175 INFO L78 Accepts]: Start accepts. Automaton has 27270 states and 44539 transitions. Word has length 112 [2023-12-21 13:06:24,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:06:24,175 INFO L495 AbstractCegarLoop]: Abstraction has 27270 states and 44539 transitions. [2023-12-21 13:06:24,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:06:24,175 INFO L276 IsEmpty]: Start isEmpty. Operand 27270 states and 44539 transitions. [2023-12-21 13:06:24,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-21 13:06:24,176 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:06:24,177 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:06:24,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-21 13:06:24,177 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:06:24,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:06:24,177 INFO L85 PathProgramCache]: Analyzing trace with hash 594481168, now seen corresponding path program 1 times [2023-12-21 13:06:24,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:06:24,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256527365] [2023-12-21 13:06:24,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:06:24,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:06:24,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:06:24,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:06:24,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:06:24,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256527365] [2023-12-21 13:06:24,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256527365] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:06:24,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:06:24,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:06:24,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942920378] [2023-12-21 13:06:24,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:06:24,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:06:24,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:06:24,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:06:24,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:06:24,235 INFO L87 Difference]: Start difference. First operand 27270 states and 44539 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:06:24,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:06:24,530 INFO L93 Difference]: Finished difference Result 53210 states and 87187 transitions. [2023-12-21 13:06:24,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:06:24,531 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 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 112 [2023-12-21 13:06:24,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:06:24,597 INFO L225 Difference]: With dead ends: 53210 [2023-12-21 13:06:24,597 INFO L226 Difference]: Without dead ends: 38174 [2023-12-21 13:06:24,613 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 [2023-12-21 13:06:24,614 INFO L413 NwaCegarLoop]: 598 mSDtfsCounter, 187 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 1088 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:06:24,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 1088 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:06:24,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38174 states. [2023-12-21 13:06:24,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38174 to 38172. [2023-12-21 13:06:24,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38172 states, 38171 states have (on average 1.6304786356134238) internal successors, (62237), 38171 states have internal predecessors, (62237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:06:25,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38172 states to 38172 states and 62237 transitions. [2023-12-21 13:06:25,137 INFO L78 Accepts]: Start accepts. Automaton has 38172 states and 62237 transitions. Word has length 112 [2023-12-21 13:06:25,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:06:25,137 INFO L495 AbstractCegarLoop]: Abstraction has 38172 states and 62237 transitions. [2023-12-21 13:06:25,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:06:25,137 INFO L276 IsEmpty]: Start isEmpty. Operand 38172 states and 62237 transitions. [2023-12-21 13:06:25,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-21 13:06:25,138 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:06:25,138 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:06:25,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-21 13:06:25,139 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:06:25,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:06:25,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1659068968, now seen corresponding path program 1 times [2023-12-21 13:06:25,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:06:25,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833655156] [2023-12-21 13:06:25,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:06:25,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:06:25,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:06:25,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:06:25,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:06:25,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833655156] [2023-12-21 13:06:25,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833655156] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:06:25,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:06:25,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:06:25,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513531465] [2023-12-21 13:06:25,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:06:25,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:06:25,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:06:25,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:06:25,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:06:25,195 INFO L87 Difference]: Start difference. First operand 38172 states and 62237 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:06:25,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:06:25,505 INFO L93 Difference]: Finished difference Result 83679 states and 137526 transitions. [2023-12-21 13:06:25,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:06:25,508 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 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 112 [2023-12-21 13:06:25,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:06:25,627 INFO L225 Difference]: With dead ends: 83679 [2023-12-21 13:06:25,628 INFO L226 Difference]: Without dead ends: 56798 [2023-12-21 13:06:25,648 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 [2023-12-21 13:06:25,648 INFO L413 NwaCegarLoop]: 690 mSDtfsCounter, 205 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 1177 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:06:25,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 1177 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:06:25,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56798 states. [2023-12-21 13:06:26,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56798 to 56796. [2023-12-21 13:06:26,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56796 states, 56795 states have (on average 1.6322739677788538) internal successors, (92705), 56795 states have internal predecessors, (92705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:06:26,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56796 states to 56796 states and 92705 transitions. [2023-12-21 13:06:26,457 INFO L78 Accepts]: Start accepts. Automaton has 56796 states and 92705 transitions. Word has length 112 [2023-12-21 13:06:26,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:06:26,458 INFO L495 AbstractCegarLoop]: Abstraction has 56796 states and 92705 transitions. [2023-12-21 13:06:26,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:06:26,458 INFO L276 IsEmpty]: Start isEmpty. Operand 56796 states and 92705 transitions. [2023-12-21 13:06:26,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-21 13:06:26,459 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:06:26,459 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:06:26,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-21 13:06:26,459 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:06:26,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:06:26,460 INFO L85 PathProgramCache]: Analyzing trace with hash -609134524, now seen corresponding path program 1 times [2023-12-21 13:06:26,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:06:26,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538855033] [2023-12-21 13:06:26,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:06:26,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:06:26,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:06:26,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:06:26,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:06:26,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538855033] [2023-12-21 13:06:26,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538855033] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:06:26,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:06:26,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:06:26,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809090924] [2023-12-21 13:06:26,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:06:26,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 13:06:26,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:06:26,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 13:06:26,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 13:06:26,555 INFO L87 Difference]: Start difference. First operand 56796 states and 92705 transitions. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:06:27,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:06:27,110 INFO L93 Difference]: Finished difference Result 182049 states and 297970 transitions. [2023-12-21 13:06:27,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 13:06:27,111 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2023-12-21 13:06:27,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:06:27,429 INFO L225 Difference]: With dead ends: 182049 [2023-12-21 13:06:27,429 INFO L226 Difference]: Without dead ends: 125484 [2023-12-21 13:06:27,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:06:27,475 INFO L413 NwaCegarLoop]: 510 mSDtfsCounter, 652 mSDsluCounter, 1201 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 652 SdHoareTripleChecker+Valid, 1711 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:06:27,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [652 Valid, 1711 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:06:27,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125484 states. [2023-12-21 13:06:28,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125484 to 90915. [2023-12-21 13:06:28,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90915 states, 90914 states have (on average 1.628550058296852) internal successors, (148058), 90914 states have internal predecessors, (148058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:06:28,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90915 states to 90915 states and 148058 transitions. [2023-12-21 13:06:28,731 INFO L78 Accepts]: Start accepts. Automaton has 90915 states and 148058 transitions. Word has length 113 [2023-12-21 13:06:28,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:06:28,732 INFO L495 AbstractCegarLoop]: Abstraction has 90915 states and 148058 transitions. [2023-12-21 13:06:28,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:06:28,732 INFO L276 IsEmpty]: Start isEmpty. Operand 90915 states and 148058 transitions. [2023-12-21 13:06:28,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-21 13:06:28,753 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:06:28,753 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:06:28,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-21 13:06:28,753 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:06:28,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:06:28,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1514935861, now seen corresponding path program 1 times [2023-12-21 13:06:28,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:06:28,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239053311] [2023-12-21 13:06:28,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:06:28,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:06:28,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:06:29,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:06:29,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:06:29,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239053311] [2023-12-21 13:06:29,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239053311] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:06:29,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:06:29,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:06:29,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955167291] [2023-12-21 13:06:29,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:06:29,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 13:06:29,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:06:29,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 13:06:29,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-21 13:06:29,215 INFO L87 Difference]: Start difference. First operand 90915 states and 148058 transitions. Second operand has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:06:29,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:06:29,862 INFO L93 Difference]: Finished difference Result 181601 states and 295739 transitions. [2023-12-21 13:06:29,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 13:06:29,862 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2023-12-21 13:06:29,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:06:30,024 INFO L225 Difference]: With dead ends: 181601 [2023-12-21 13:06:30,024 INFO L226 Difference]: Without dead ends: 90917 [2023-12-21 13:06:30,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-12-21 13:06:30,075 INFO L413 NwaCegarLoop]: 517 mSDtfsCounter, 759 mSDsluCounter, 1473 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 759 SdHoareTripleChecker+Valid, 1990 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:06:30,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [759 Valid, 1990 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:06:30,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90917 states. [2023-12-21 13:06:30,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90917 to 90915. [2023-12-21 13:06:31,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90915 states, 90914 states have (on average 1.6216754295268057) internal successors, (147433), 90914 states have internal predecessors, (147433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:06:31,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90915 states to 90915 states and 147433 transitions. [2023-12-21 13:06:31,187 INFO L78 Accepts]: Start accepts. Automaton has 90915 states and 147433 transitions. Word has length 115 [2023-12-21 13:06:31,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:06:31,188 INFO L495 AbstractCegarLoop]: Abstraction has 90915 states and 147433 transitions. [2023-12-21 13:06:31,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:06:31,188 INFO L276 IsEmpty]: Start isEmpty. Operand 90915 states and 147433 transitions. [2023-12-21 13:06:31,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-21 13:06:31,189 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:06:31,189 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:06:31,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-21 13:06:31,189 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:06:31,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:06:31,189 INFO L85 PathProgramCache]: Analyzing trace with hash -2110499679, now seen corresponding path program 1 times [2023-12-21 13:06:31,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:06:31,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694497466] [2023-12-21 13:06:31,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:06:31,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:06:31,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:06:31,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:06:31,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:06:31,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694497466] [2023-12-21 13:06:31,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694497466] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:06:31,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:06:31,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:06:31,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977993907] [2023-12-21 13:06:31,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:06:31,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 13:06:31,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:06:31,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 13:06:31,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-21 13:06:31,674 INFO L87 Difference]: Start difference. First operand 90915 states and 147433 transitions. Second operand has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:06:32,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:06:32,523 INFO L93 Difference]: Finished difference Result 265759 states and 431455 transitions. [2023-12-21 13:06:32,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 13:06:32,524 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2023-12-21 13:06:32,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:06:32,736 INFO L225 Difference]: With dead ends: 265759 [2023-12-21 13:06:32,736 INFO L226 Difference]: Without dead ends: 175075 [2023-12-21 13:06:32,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-12-21 13:06:32,786 INFO L413 NwaCegarLoop]: 512 mSDtfsCounter, 751 mSDsluCounter, 1491 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 751 SdHoareTripleChecker+Valid, 2003 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:06:32,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [751 Valid, 2003 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:06:32,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175075 states. [2023-12-21 13:06:34,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175075 to 175073. [2023-12-21 13:06:34,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175073 states, 175072 states have (on average 1.6129478157558033) internal successors, (282382), 175072 states have internal predecessors, (282382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:06:35,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175073 states to 175073 states and 282382 transitions. [2023-12-21 13:06:35,119 INFO L78 Accepts]: Start accepts. Automaton has 175073 states and 282382 transitions. Word has length 118 [2023-12-21 13:06:35,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:06:35,119 INFO L495 AbstractCegarLoop]: Abstraction has 175073 states and 282382 transitions. [2023-12-21 13:06:35,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:06:35,120 INFO L276 IsEmpty]: Start isEmpty. Operand 175073 states and 282382 transitions. [2023-12-21 13:06:35,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-12-21 13:06:35,120 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:06:35,120 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:06:35,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-21 13:06:35,121 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:06:35,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:06:35,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1002889742, now seen corresponding path program 1 times [2023-12-21 13:06:35,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:06:35,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185322583] [2023-12-21 13:06:35,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:06:35,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:06:35,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:06:35,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:06:35,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:06:35,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185322583] [2023-12-21 13:06:35,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185322583] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:06:35,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:06:35,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 13:06:35,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050414953] [2023-12-21 13:06:35,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:06:35,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:06:35,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:06:35,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:06:35,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:06:35,611 INFO L87 Difference]: Start difference. First operand 175073 states and 282382 transitions. Second operand has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:06:36,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:06:36,798 INFO L93 Difference]: Finished difference Result 332943 states and 535357 transitions. [2023-12-21 13:06:36,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 13:06:36,799 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 0 states have call successors, (0), 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 119 [2023-12-21 13:06:36,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:06:37,415 INFO L225 Difference]: With dead ends: 332943 [2023-12-21 13:06:37,415 INFO L226 Difference]: Without dead ends: 332941 [2023-12-21 13:06:37,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 13:06:37,495 INFO L413 NwaCegarLoop]: 648 mSDtfsCounter, 422 mSDsluCounter, 1683 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 2331 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:06:37,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [422 Valid, 2331 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:06:37,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332941 states. [2023-12-21 13:06:40,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332941 to 178945. [2023-12-21 13:06:40,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178945 states, 178944 states have (on average 1.5995339324034334) internal successors, (286227), 178944 states have internal predecessors, (286227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:06:40,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178945 states to 178945 states and 286227 transitions. [2023-12-21 13:06:40,788 INFO L78 Accepts]: Start accepts. Automaton has 178945 states and 286227 transitions. Word has length 119 [2023-12-21 13:06:40,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:06:40,788 INFO L495 AbstractCegarLoop]: Abstraction has 178945 states and 286227 transitions. [2023-12-21 13:06:40,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:06:40,789 INFO L276 IsEmpty]: Start isEmpty. Operand 178945 states and 286227 transitions. [2023-12-21 13:06:40,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-21 13:06:40,793 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:06:40,793 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:06:40,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-21 13:06:40,793 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:06:40,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:06:40,794 INFO L85 PathProgramCache]: Analyzing trace with hash 144456868, now seen corresponding path program 1 times [2023-12-21 13:06:40,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:06:40,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713289281] [2023-12-21 13:06:40,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:06:40,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:06:40,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:06:40,946 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-21 13:06:40,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:06:40,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713289281] [2023-12-21 13:06:40,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713289281] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:06:40,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:06:40,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:06:40,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739120598] [2023-12-21 13:06:40,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:06:40,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 13:06:40,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:06:40,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 13:06:40,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-21 13:06:40,948 INFO L87 Difference]: Start difference. First operand 178945 states and 286227 transitions. Second operand has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:06:42,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:06:42,885 INFO L93 Difference]: Finished difference Result 487707 states and 782932 transitions. [2023-12-21 13:06:42,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 13:06:42,887 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 0 states have call successors, (0), 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 150 [2023-12-21 13:06:42,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:06:43,998 INFO L225 Difference]: With dead ends: 487707 [2023-12-21 13:06:43,998 INFO L226 Difference]: Without dead ends: 409055 [2023-12-21 13:06:44,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-21 13:06:44,053 INFO L413 NwaCegarLoop]: 740 mSDtfsCounter, 1315 mSDsluCounter, 2114 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1315 SdHoareTripleChecker+Valid, 2854 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 13:06:44,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1315 Valid, 2854 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 13:06:44,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409055 states. [2023-12-21 13:06:47,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409055 to 287493. [2023-12-21 13:06:47,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287493 states, 287492 states have (on average 1.5982183852072405) internal successors, (459475), 287492 states have internal predecessors, (459475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:06:48,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287493 states to 287493 states and 459475 transitions. [2023-12-21 13:06:48,908 INFO L78 Accepts]: Start accepts. Automaton has 287493 states and 459475 transitions. Word has length 150 [2023-12-21 13:06:48,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:06:48,908 INFO L495 AbstractCegarLoop]: Abstraction has 287493 states and 459475 transitions. [2023-12-21 13:06:48,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:06:48,908 INFO L276 IsEmpty]: Start isEmpty. Operand 287493 states and 459475 transitions. [2023-12-21 13:06:48,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-21 13:06:48,912 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:06:48,912 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:06:48,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-21 13:06:48,912 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:06:48,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:06:48,912 INFO L85 PathProgramCache]: Analyzing trace with hash 684701708, now seen corresponding path program 1 times [2023-12-21 13:06:48,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:06:48,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309855868] [2023-12-21 13:06:48,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:06:48,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:06:48,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:06:49,034 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-21 13:06:49,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:06:49,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309855868] [2023-12-21 13:06:49,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309855868] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:06:49,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:06:49,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:06:49,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956173169] [2023-12-21 13:06:49,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:06:49,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 13:06:49,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:06:49,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 13:06:49,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-21 13:06:49,036 INFO L87 Difference]: Start difference. First operand 287493 states and 459475 transitions. Second operand has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:06:51,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:06:51,071 INFO L93 Difference]: Finished difference Result 537755 states and 863616 transitions. [2023-12-21 13:06:51,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 13:06:51,072 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 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 150 [2023-12-21 13:06:51,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:06:52,247 INFO L225 Difference]: With dead ends: 537755 [2023-12-21 13:06:52,247 INFO L226 Difference]: Without dead ends: 459103 [2023-12-21 13:06:52,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-21 13:06:52,326 INFO L413 NwaCegarLoop]: 736 mSDtfsCounter, 1399 mSDsluCounter, 2265 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1399 SdHoareTripleChecker+Valid, 3001 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:06:52,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1399 Valid, 3001 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:06:52,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459103 states. [2023-12-21 13:06:56,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459103 to 388611. [2023-12-21 13:06:57,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388611 states, 388610 states have (on average 1.5995754097938808) internal successors, (621611), 388610 states have internal predecessors, (621611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:06:58,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388611 states to 388611 states and 621611 transitions. [2023-12-21 13:06:58,444 INFO L78 Accepts]: Start accepts. Automaton has 388611 states and 621611 transitions. Word has length 150 [2023-12-21 13:06:58,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:06:58,444 INFO L495 AbstractCegarLoop]: Abstraction has 388611 states and 621611 transitions. [2023-12-21 13:06:58,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:06:58,445 INFO L276 IsEmpty]: Start isEmpty. Operand 388611 states and 621611 transitions. [2023-12-21 13:06:58,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-21 13:06:58,448 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:06:58,449 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:06:58,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-21 13:06:58,449 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:06:58,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:06:58,449 INFO L85 PathProgramCache]: Analyzing trace with hash 975747700, now seen corresponding path program 1 times [2023-12-21 13:06:58,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:06:58,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50257444] [2023-12-21 13:06:58,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:06:58,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:06:58,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:06:58,601 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-21 13:06:58,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:06:58,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50257444] [2023-12-21 13:06:58,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50257444] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:06:58,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:06:58,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:06:58,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886147525] [2023-12-21 13:06:58,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:06:58,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 13:06:58,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:06:58,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 13:06:58,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-21 13:06:58,603 INFO L87 Difference]: Start difference. First operand 388611 states and 621611 transitions. Second operand has 6 states, 6 states have (on average 22.0) internal successors, (132), 6 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:07:00,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:07:00,627 INFO L93 Difference]: Finished difference Result 568975 states and 913876 transitions. [2023-12-21 13:07:00,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 13:07:00,628 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.0) internal successors, (132), 6 states have internal predecessors, (132), 0 states have call successors, (0), 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 150 [2023-12-21 13:07:00,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:07:01,580 INFO L225 Difference]: With dead ends: 568975 [2023-12-21 13:07:01,580 INFO L226 Difference]: Without dead ends: 490323 [2023-12-21 13:07:01,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-21 13:07:01,719 INFO L413 NwaCegarLoop]: 742 mSDtfsCounter, 1328 mSDsluCounter, 2383 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1328 SdHoareTripleChecker+Valid, 3125 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:07:01,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1328 Valid, 3125 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:07:02,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490323 states. [2023-12-21 13:07:06,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490323 to 450179. [2023-12-21 13:07:07,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450179 states, 450178 states have (on average 1.6012488393479913) internal successors, (720847), 450178 states have internal predecessors, (720847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:07:08,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450179 states to 450179 states and 720847 transitions. [2023-12-21 13:07:08,799 INFO L78 Accepts]: Start accepts. Automaton has 450179 states and 720847 transitions. Word has length 150 [2023-12-21 13:07:08,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:07:08,799 INFO L495 AbstractCegarLoop]: Abstraction has 450179 states and 720847 transitions. [2023-12-21 13:07:08,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.0) internal successors, (132), 6 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:07:08,799 INFO L276 IsEmpty]: Start isEmpty. Operand 450179 states and 720847 transitions. [2023-12-21 13:07:08,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-21 13:07:08,804 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:07:08,804 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:07:08,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-21 13:07:08,804 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:07:08,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:07:08,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1277802436, now seen corresponding path program 1 times [2023-12-21 13:07:08,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:07:08,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462963333] [2023-12-21 13:07:08,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:07:08,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:07:08,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:07:08,994 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-21 13:07:08,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:07:08,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462963333] [2023-12-21 13:07:08,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462963333] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:07:08,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:07:08,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:07:08,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887521410] [2023-12-21 13:07:08,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:07:08,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 13:07:08,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:07:08,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 13:07:08,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-21 13:07:08,996 INFO L87 Difference]: Start difference. First operand 450179 states and 720847 transitions. Second operand has 6 states, 6 states have (on average 25.0) internal successors, (150), 6 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:07:11,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:07:11,415 INFO L93 Difference]: Finished difference Result 632429 states and 1016720 transitions. [2023-12-21 13:07:11,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 13:07:11,416 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.0) internal successors, (150), 6 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2023-12-21 13:07:11,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:07:12,807 INFO L225 Difference]: With dead ends: 632429 [2023-12-21 13:07:12,807 INFO L226 Difference]: Without dead ends: 552627 [2023-12-21 13:07:12,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-21 13:07:12,897 INFO L413 NwaCegarLoop]: 736 mSDtfsCounter, 1308 mSDsluCounter, 2575 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1308 SdHoareTripleChecker+Valid, 3311 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:07:12,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1308 Valid, 3311 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:07:13,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552627 states. [2023-12-21 13:07:18,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552627 to 512483. [2023-12-21 13:07:19,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512483 states, 512482 states have (on average 1.6029655675711538) internal successors, (821491), 512482 states have internal predecessors, (821491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:07:21,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512483 states to 512483 states and 821491 transitions. [2023-12-21 13:07:21,264 INFO L78 Accepts]: Start accepts. Automaton has 512483 states and 821491 transitions. Word has length 150 [2023-12-21 13:07:21,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:07:21,264 INFO L495 AbstractCegarLoop]: Abstraction has 512483 states and 821491 transitions. [2023-12-21 13:07:21,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.0) internal successors, (150), 6 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:07:21,264 INFO L276 IsEmpty]: Start isEmpty. Operand 512483 states and 821491 transitions. [2023-12-21 13:07:21,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-21 13:07:21,268 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:07:21,268 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:07:21,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-21 13:07:21,269 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:07:21,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:07:21,269 INFO L85 PathProgramCache]: Analyzing trace with hash 204878395, now seen corresponding path program 1 times [2023-12-21 13:07:21,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:07:21,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567143199] [2023-12-21 13:07:21,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:07:21,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:07:21,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:07:21,327 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-21 13:07:21,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:07:21,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567143199] [2023-12-21 13:07:21,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567143199] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:07:21,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:07:21,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:07:21,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183985957] [2023-12-21 13:07:21,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:07:21,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:07:21,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:07:21,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:07:21,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:07:21,328 INFO L87 Difference]: Start difference. First operand 512483 states and 821491 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:07:25,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:07:25,665 INFO L93 Difference]: Finished difference Result 1089769 states and 1752847 transitions. [2023-12-21 13:07:25,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:07:25,665 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 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 151 [2023-12-21 13:07:25,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:07:27,455 INFO L225 Difference]: With dead ends: 1089769 [2023-12-21 13:07:27,455 INFO L226 Difference]: Without dead ends: 812723 [2023-12-21 13:07:27,673 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 [2023-12-21 13:07:27,673 INFO L413 NwaCegarLoop]: 507 mSDtfsCounter, 178 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 991 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:07:27,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 991 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:07:28,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812723 states. [2023-12-21 13:07:37,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812723 to 811452. [2023-12-21 13:07:38,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 811452 states, 811451 states have (on average 1.6048991251474212) internal successors, (1302297), 811451 states have internal predecessors, (1302297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:07:42,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 811452 states to 811452 states and 1302297 transitions. [2023-12-21 13:07:42,527 INFO L78 Accepts]: Start accepts. Automaton has 811452 states and 1302297 transitions. Word has length 151 [2023-12-21 13:07:42,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:07:42,528 INFO L495 AbstractCegarLoop]: Abstraction has 811452 states and 1302297 transitions. [2023-12-21 13:07:42,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:07:42,528 INFO L276 IsEmpty]: Start isEmpty. Operand 811452 states and 1302297 transitions. [2023-12-21 13:07:42,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-21 13:07:42,535 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:07:42,536 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:07:42,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-21 13:07:42,536 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:07:42,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:07:42,537 INFO L85 PathProgramCache]: Analyzing trace with hash -1024231902, now seen corresponding path program 1 times [2023-12-21 13:07:42,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:07:42,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616449097] [2023-12-21 13:07:42,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:07:42,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:07:42,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:07:42,959 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-21 13:07:42,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:07:42,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616449097] [2023-12-21 13:07:42,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616449097] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:07:42,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:07:42,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:07:42,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875040151] [2023-12-21 13:07:42,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:07:42,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 13:07:42,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:07:42,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 13:07:42,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-21 13:07:42,961 INFO L87 Difference]: Start difference. First operand 811452 states and 1302297 transitions. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:07:48,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:07:48,637 INFO L93 Difference]: Finished difference Result 1362931 states and 2192434 transitions. [2023-12-21 13:07:48,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 13:07:48,640 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 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 151 [2023-12-21 13:07:48,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:07:52,058 INFO L225 Difference]: With dead ends: 1362931 [2023-12-21 13:07:52,059 INFO L226 Difference]: Without dead ends: 1079167 [2023-12-21 13:07:52,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-21 13:07:52,375 INFO L413 NwaCegarLoop]: 731 mSDtfsCounter, 385 mSDsluCounter, 727 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 1458 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:07:52,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [385 Valid, 1458 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:07:53,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079167 states. [2023-12-21 13:08:04,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079167 to 1023432. [2023-12-21 13:08:05,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1023432 states, 1023431 states have (on average 1.6034202598905056) internal successors, (1640990), 1023431 states have internal predecessors, (1640990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:08:10,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023432 states to 1023432 states and 1640990 transitions. [2023-12-21 13:08:10,849 INFO L78 Accepts]: Start accepts. Automaton has 1023432 states and 1640990 transitions. Word has length 151 [2023-12-21 13:08:10,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:08:10,850 INFO L495 AbstractCegarLoop]: Abstraction has 1023432 states and 1640990 transitions. [2023-12-21 13:08:10,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:08:10,850 INFO L276 IsEmpty]: Start isEmpty. Operand 1023432 states and 1640990 transitions. [2023-12-21 13:08:10,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-21 13:08:10,855 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:08:10,855 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:08:10,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-21 13:08:10,855 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:08:10,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:08:10,856 INFO L85 PathProgramCache]: Analyzing trace with hash -757330901, now seen corresponding path program 1 times [2023-12-21 13:08:10,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:08:10,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133415066] [2023-12-21 13:08:10,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:08:10,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:08:10,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:08:11,348 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-21 13:08:11,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:08:11,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133415066] [2023-12-21 13:08:11,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133415066] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:08:11,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:08:11,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:08:11,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745060197] [2023-12-21 13:08:11,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:08:11,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 13:08:11,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:08:11,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 13:08:11,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-21 13:08:11,349 INFO L87 Difference]: Start difference. First operand 1023432 states and 1640990 transitions. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:08:17,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:08:17,711 INFO L93 Difference]: Finished difference Result 1493159 states and 2399801 transitions. [2023-12-21 13:08:17,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 13:08:17,711 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 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 152 [2023-12-21 13:08:17,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:08:22,240 INFO L225 Difference]: With dead ends: 1493159 [2023-12-21 13:08:22,241 INFO L226 Difference]: Without dead ends: 1246451 [2023-12-21 13:08:22,684 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-21 13:08:22,685 INFO L413 NwaCegarLoop]: 731 mSDtfsCounter, 391 mSDsluCounter, 727 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 1458 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:08:22,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [391 Valid, 1458 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:08:23,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1246451 states. [2023-12-21 13:08:36,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1246451 to 1163495. [2023-12-21 13:08:37,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1163495 states, 1163494 states have (on average 1.6027465547738107) internal successors, (1864786), 1163494 states have internal predecessors, (1864786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:08:43,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1163495 states to 1163495 states and 1864786 transitions. [2023-12-21 13:08:43,528 INFO L78 Accepts]: Start accepts. Automaton has 1163495 states and 1864786 transitions. Word has length 152 [2023-12-21 13:08:43,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:08:43,528 INFO L495 AbstractCegarLoop]: Abstraction has 1163495 states and 1864786 transitions. [2023-12-21 13:08:43,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:08:43,529 INFO L276 IsEmpty]: Start isEmpty. Operand 1163495 states and 1864786 transitions. [2023-12-21 13:08:43,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-21 13:08:43,534 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:08:43,534 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:08:43,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-21 13:08:43,534 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:08:43,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:08:43,534 INFO L85 PathProgramCache]: Analyzing trace with hash 480344566, now seen corresponding path program 1 times [2023-12-21 13:08:43,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:08:43,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847841337] [2023-12-21 13:08:43,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:08:43,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:08:43,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:08:43,663 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-21 13:08:43,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:08:43,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847841337] [2023-12-21 13:08:43,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847841337] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:08:43,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:08:43,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:08:43,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616909806] [2023-12-21 13:08:43,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:08:43,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:08:43,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:08:43,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:08:43,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:08:43,667 INFO L87 Difference]: Start difference. First operand 1163495 states and 1864786 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)