/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_lcr.6.1.ufo.UNBOUNDED.pals.c.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 14:09:00,928 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 14:09:00,992 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 14:09:00,997 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 14:09:00,998 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 14:09:01,019 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 14:09:01,019 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 14:09:01,019 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 14:09:01,020 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 14:09:01,023 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 14:09:01,023 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 14:09:01,023 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 14:09:01,024 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 14:09:01,025 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 14:09:01,025 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 14:09:01,025 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 14:09:01,025 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 14:09:01,025 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 14:09:01,025 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 14:09:01,026 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 14:09:01,026 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 14:09:01,026 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 14:09:01,026 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 14:09:01,026 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 14:09:01,026 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 14:09:01,026 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 14:09:01,027 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 14:09:01,027 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 14:09:01,027 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 14:09:01,027 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 14:09:01,028 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 14:09:01,028 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 14:09:01,028 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 14:09:01,029 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 14:09:01,029 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 14:09:01,029 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 14:09:01,029 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 14:09:01,029 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 14:09:01,029 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 14:09:01,029 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 14:09:01,029 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 14:09:01,029 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 14:09:01,030 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 14:09:01,030 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 14:09:01,222 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 14:09:01,238 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 14:09:01,240 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 14:09:01,241 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 14:09:01,241 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 14:09:01,242 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.p+lhb-reducer.c [2023-12-21 14:09:02,228 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 14:09:02,456 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 14:09:02,456 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.p+lhb-reducer.c [2023-12-21 14:09:02,470 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/672ed08d4/0b49ed4cddad406594b5a914efaeea7f/FLAG1a6e4f802 [2023-12-21 14:09:02,479 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/672ed08d4/0b49ed4cddad406594b5a914efaeea7f [2023-12-21 14:09:02,481 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 14:09:02,482 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 14:09:02,483 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 14:09:02,483 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 14:09:02,486 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 14:09:02,486 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 02:09:02" (1/1) ... [2023-12-21 14:09:02,487 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67aec4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:09:02, skipping insertion in model container [2023-12-21 14:09:02,487 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 02:09:02" (1/1) ... [2023-12-21 14:09:02,545 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 14:09:02,721 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_lcr.6.1.ufo.UNBOUNDED.pals.c.p+lhb-reducer.c[11714,11727] [2023-12-21 14:09:02,774 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 14:09:02,785 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 14:09:02,837 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_lcr.6.1.ufo.UNBOUNDED.pals.c.p+lhb-reducer.c[11714,11727] [2023-12-21 14:09:02,868 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 14:09:02,881 INFO L206 MainTranslator]: Completed translation [2023-12-21 14:09:02,882 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:09:02 WrapperNode [2023-12-21 14:09:02,882 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 14:09:02,882 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 14:09:02,883 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 14:09:02,883 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 14:09:02,892 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:09:02" (1/1) ... [2023-12-21 14:09:02,902 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:09:02" (1/1) ... [2023-12-21 14:09:02,937 INFO L138 Inliner]: procedures = 26, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1031 [2023-12-21 14:09:02,937 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 14:09:02,938 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 14:09:02,938 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 14:09:02,938 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 14:09:02,945 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:09:02" (1/1) ... [2023-12-21 14:09:02,945 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:09:02" (1/1) ... [2023-12-21 14:09:02,955 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:09:02" (1/1) ... [2023-12-21 14:09:02,968 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 14:09:02,969 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:09:02" (1/1) ... [2023-12-21 14:09:02,969 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:09:02" (1/1) ... [2023-12-21 14:09:02,986 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:09:02" (1/1) ... [2023-12-21 14:09:02,990 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:09:02" (1/1) ... [2023-12-21 14:09:02,992 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:09:02" (1/1) ... [2023-12-21 14:09:02,994 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:09:02" (1/1) ... [2023-12-21 14:09:03,018 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 14:09:03,018 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 14:09:03,019 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 14:09:03,019 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 14:09:03,019 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:09:02" (1/1) ... [2023-12-21 14:09:03,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 14:09:03,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 14:09:03,039 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 14:09:03,048 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 14:09:03,064 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 14:09:03,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 14:09:03,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 14:09:03,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 14:09:03,202 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 14:09:03,203 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 14:09:03,826 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 14:09:03,873 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 14:09:03,874 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-21 14:09:03,874 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:09:03 BoogieIcfgContainer [2023-12-21 14:09:03,874 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 14:09:03,876 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 14:09:03,876 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 14:09:03,878 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 14:09:03,878 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 02:09:02" (1/3) ... [2023-12-21 14:09:03,879 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@537d119b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 02:09:03, skipping insertion in model container [2023-12-21 14:09:03,879 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:09:02" (2/3) ... [2023-12-21 14:09:03,879 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@537d119b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 02:09:03, skipping insertion in model container [2023-12-21 14:09:03,880 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:09:03" (3/3) ... [2023-12-21 14:09:03,881 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.1.ufo.UNBOUNDED.pals.c.p+lhb-reducer.c [2023-12-21 14:09:03,893 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 14:09:03,893 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 14:09:03,947 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 14:09:03,951 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;@7386882c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 14:09:03,951 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 14:09:03,961 INFO L276 IsEmpty]: Start isEmpty. Operand has 255 states, 253 states have (on average 1.6758893280632412) internal successors, (424), 254 states have internal predecessors, (424), 0 states have call successors, (0), 0 states 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 14:09:03,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-21 14:09:03,974 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:09:03,976 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] [2023-12-21 14:09:03,977 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:09:03,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:09:03,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1308468385, now seen corresponding path program 1 times [2023-12-21 14:09:04,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:09:04,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812018285] [2023-12-21 14:09:04,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:09:04,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:09:04,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:09:04,369 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 14:09:04,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:09:04,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812018285] [2023-12-21 14:09:04,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812018285] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:09:04,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:09:04,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 14:09:04,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526959] [2023-12-21 14:09:04,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:09:04,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 14:09:04,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:09:04,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 14:09:04,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 14:09:04,402 INFO L87 Difference]: Start difference. First operand has 255 states, 253 states have (on average 1.6758893280632412) internal successors, (424), 254 states have internal predecessors, (424), 0 states have call successors, (0), 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 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states 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 14:09:04,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:09:04,511 INFO L93 Difference]: Finished difference Result 470 states and 768 transitions. [2023-12-21 14:09:04,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 14:09:04,513 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 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 90 [2023-12-21 14:09:04,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:09:04,523 INFO L225 Difference]: With dead ends: 470 [2023-12-21 14:09:04,524 INFO L226 Difference]: Without dead ends: 253 [2023-12-21 14:09:04,527 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 14:09:04,530 INFO L413 NwaCegarLoop]: 419 mSDtfsCounter, 341 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 878 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:09:04,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [341 Valid, 878 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:09:04,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2023-12-21 14:09:04,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2023-12-21 14:09:04,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 252 states have (on average 1.503968253968254) internal successors, (379), 252 states have internal predecessors, (379), 0 states have call successors, (0), 0 states 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 14:09:04,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 379 transitions. [2023-12-21 14:09:04,575 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 379 transitions. Word has length 90 [2023-12-21 14:09:04,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:09:04,576 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 379 transitions. [2023-12-21 14:09:04,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states 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 14:09:04,576 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 379 transitions. [2023-12-21 14:09:04,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-12-21 14:09:04,583 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:09:04,583 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:09:04,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-21 14:09:04,584 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:09:04,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:09:04,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1342012378, now seen corresponding path program 1 times [2023-12-21 14:09:04,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:09:04,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347919745] [2023-12-21 14:09:04,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:09:04,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:09:04,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:09:04,742 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 14:09:04,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:09:04,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347919745] [2023-12-21 14:09:04,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347919745] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:09:04,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:09:04,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:09:04,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572172370] [2023-12-21 14:09:04,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:09:04,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:09:04,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:09:04,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:09:04,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:09:04,744 INFO L87 Difference]: Start difference. First operand 253 states and 379 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states 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 14:09:04,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:09:04,776 INFO L93 Difference]: Finished difference Result 554 states and 859 transitions. [2023-12-21 14:09:04,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:09:04,793 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 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 129 [2023-12-21 14:09:04,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:09:04,795 INFO L225 Difference]: With dead ends: 554 [2023-12-21 14:09:04,795 INFO L226 Difference]: Without dead ends: 361 [2023-12-21 14:09:04,796 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 14:09:04,797 INFO L413 NwaCegarLoop]: 368 mSDtfsCounter, 207 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:09:04,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 660 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:09:04,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2023-12-21 14:09:04,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 359. [2023-12-21 14:09:04,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 358 states have (on average 1.5279329608938548) internal successors, (547), 358 states have internal predecessors, (547), 0 states have call successors, (0), 0 states 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 14:09:04,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 547 transitions. [2023-12-21 14:09:04,806 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 547 transitions. Word has length 129 [2023-12-21 14:09:04,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:09:04,807 INFO L495 AbstractCegarLoop]: Abstraction has 359 states and 547 transitions. [2023-12-21 14:09:04,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states 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 14:09:04,807 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 547 transitions. [2023-12-21 14:09:04,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-21 14:09:04,808 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:09:04,809 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:09:04,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-21 14:09:04,809 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:09:04,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:09:04,810 INFO L85 PathProgramCache]: Analyzing trace with hash -8242253, now seen corresponding path program 1 times [2023-12-21 14:09:04,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:09:04,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208896330] [2023-12-21 14:09:04,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:09:04,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:09:04,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:09:04,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:09:04,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:09:04,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208896330] [2023-12-21 14:09:04,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208896330] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:09:04,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:09:04,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:09:04,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796156822] [2023-12-21 14:09:04,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:09:04,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:09:04,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:09:04,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:09:04,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:09:04,943 INFO L87 Difference]: Start difference. First operand 359 states and 547 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states 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 14:09:04,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:09:04,962 INFO L93 Difference]: Finished difference Result 842 states and 1318 transitions. [2023-12-21 14:09:04,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:09:04,963 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2023-12-21 14:09:04,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:09:04,965 INFO L225 Difference]: With dead ends: 842 [2023-12-21 14:09:04,965 INFO L226 Difference]: Without dead ends: 549 [2023-12-21 14:09:04,968 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 14:09:04,970 INFO L413 NwaCegarLoop]: 423 mSDtfsCounter, 194 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:09:04,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 703 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:09:04,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2023-12-21 14:09:04,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 547. [2023-12-21 14:09:04,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 546 states have (on average 1.5476190476190477) internal successors, (845), 546 states have internal predecessors, (845), 0 states have call successors, (0), 0 states 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 14:09:04,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 845 transitions. [2023-12-21 14:09:04,996 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 845 transitions. Word has length 131 [2023-12-21 14:09:04,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:09:04,996 INFO L495 AbstractCegarLoop]: Abstraction has 547 states and 845 transitions. [2023-12-21 14:09:04,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states 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 14:09:04,996 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 845 transitions. [2023-12-21 14:09:04,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-21 14:09:04,997 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:09:04,997 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:09:04,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-21 14:09:04,998 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:09:04,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:09:04,998 INFO L85 PathProgramCache]: Analyzing trace with hash 628669703, now seen corresponding path program 1 times [2023-12-21 14:09:04,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:09:04,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960717735] [2023-12-21 14:09:04,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:09:04,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:09:05,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:09:05,080 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 14:09:05,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:09:05,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960717735] [2023-12-21 14:09:05,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960717735] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:09:05,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:09:05,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:09:05,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711171442] [2023-12-21 14:09:05,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:09:05,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:09:05,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:09:05,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:09:05,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:09:05,084 INFO L87 Difference]: Start difference. First operand 547 states and 845 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states 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 14:09:05,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:09:05,105 INFO L93 Difference]: Finished difference Result 1348 states and 2122 transitions. [2023-12-21 14:09:05,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:09:05,105 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 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 133 [2023-12-21 14:09:05,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:09:05,109 INFO L225 Difference]: With dead ends: 1348 [2023-12-21 14:09:05,109 INFO L226 Difference]: Without dead ends: 873 [2023-12-21 14:09:05,111 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 14:09:05,117 INFO L413 NwaCegarLoop]: 399 mSDtfsCounter, 181 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 667 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:09:05,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 667 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:09:05,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 873 states. [2023-12-21 14:09:05,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 873 to 871. [2023-12-21 14:09:05,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 871 states, 870 states have (on average 1.5597701149425287) internal successors, (1357), 870 states have internal predecessors, (1357), 0 states have call successors, (0), 0 states 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 14:09:05,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 871 states to 871 states and 1357 transitions. [2023-12-21 14:09:05,134 INFO L78 Accepts]: Start accepts. Automaton has 871 states and 1357 transitions. Word has length 133 [2023-12-21 14:09:05,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:09:05,135 INFO L495 AbstractCegarLoop]: Abstraction has 871 states and 1357 transitions. [2023-12-21 14:09:05,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states 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 14:09:05,135 INFO L276 IsEmpty]: Start isEmpty. Operand 871 states and 1357 transitions. [2023-12-21 14:09:05,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-21 14:09:05,137 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:09:05,137 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:09:05,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-21 14:09:05,137 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:09:05,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:09:05,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1081027651, now seen corresponding path program 1 times [2023-12-21 14:09:05,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:09:05,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707980650] [2023-12-21 14:09:05,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:09:05,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:09:05,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:09:05,210 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 14:09:05,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:09:05,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707980650] [2023-12-21 14:09:05,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707980650] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:09:05,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:09:05,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:09:05,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29382293] [2023-12-21 14:09:05,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:09:05,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:09:05,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:09:05,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:09:05,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:09:05,212 INFO L87 Difference]: Start difference. First operand 871 states and 1357 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:05,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:09:05,235 INFO L93 Difference]: Finished difference Result 2206 states and 3478 transitions. [2023-12-21 14:09:05,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:09:05,236 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2023-12-21 14:09:05,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:09:05,241 INFO L225 Difference]: With dead ends: 2206 [2023-12-21 14:09:05,241 INFO L226 Difference]: Without dead ends: 1413 [2023-12-21 14:09:05,242 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 14:09:05,242 INFO L413 NwaCegarLoop]: 344 mSDtfsCounter, 168 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:09:05,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 600 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:09:05,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1413 states. [2023-12-21 14:09:05,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1413 to 1411. [2023-12-21 14:09:05,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1411 states, 1410 states have (on average 1.5638297872340425) internal successors, (2205), 1410 states have internal predecessors, (2205), 0 states have call successors, (0), 0 states 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 14:09:05,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1411 states to 1411 states and 2205 transitions. [2023-12-21 14:09:05,261 INFO L78 Accepts]: Start accepts. Automaton has 1411 states and 2205 transitions. Word has length 135 [2023-12-21 14:09:05,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:09:05,262 INFO L495 AbstractCegarLoop]: Abstraction has 1411 states and 2205 transitions. [2023-12-21 14:09:05,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:05,263 INFO L276 IsEmpty]: Start isEmpty. Operand 1411 states and 2205 transitions. [2023-12-21 14:09:05,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-12-21 14:09:05,265 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:09:05,266 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:09:05,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-21 14:09:05,266 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:09:05,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:09:05,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1714411201, now seen corresponding path program 1 times [2023-12-21 14:09:05,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:09:05,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912368599] [2023-12-21 14:09:05,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:09:05,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:09:05,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:09:05,376 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 14:09:05,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:09:05,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912368599] [2023-12-21 14:09:05,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912368599] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:09:05,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:09:05,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:09:05,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772625205] [2023-12-21 14:09:05,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:09:05,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:09:05,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:09:05,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:09:05,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:09:05,378 INFO L87 Difference]: Start difference. First operand 1411 states and 2205 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:05,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:09:05,407 INFO L93 Difference]: Finished difference Result 3600 states and 5662 transitions. [2023-12-21 14:09:05,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:09:05,408 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2023-12-21 14:09:05,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:09:05,415 INFO L225 Difference]: With dead ends: 3600 [2023-12-21 14:09:05,415 INFO L226 Difference]: Without dead ends: 2273 [2023-12-21 14:09:05,416 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 14:09:05,418 INFO L413 NwaCegarLoop]: 336 mSDtfsCounter, 155 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:09:05,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 580 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:09:05,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2273 states. [2023-12-21 14:09:05,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2273 to 2271. [2023-12-21 14:09:05,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2271 states, 2270 states have (on average 1.5599118942731278) internal successors, (3541), 2270 states have internal predecessors, (3541), 0 states have call successors, (0), 0 states 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 14:09:05,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2271 states to 2271 states and 3541 transitions. [2023-12-21 14:09:05,459 INFO L78 Accepts]: Start accepts. Automaton has 2271 states and 3541 transitions. Word has length 137 [2023-12-21 14:09:05,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:09:05,460 INFO L495 AbstractCegarLoop]: Abstraction has 2271 states and 3541 transitions. [2023-12-21 14:09:05,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:05,460 INFO L276 IsEmpty]: Start isEmpty. Operand 2271 states and 3541 transitions. [2023-12-21 14:09:05,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-21 14:09:05,464 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:09:05,464 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:09:05,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-21 14:09:05,464 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:09:05,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:09:05,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1743858821, now seen corresponding path program 1 times [2023-12-21 14:09:05,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:09:05,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408913026] [2023-12-21 14:09:05,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:09:05,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:09:05,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:09:05,634 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 14:09:05,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:09:05,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408913026] [2023-12-21 14:09:05,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408913026] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:09:05,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:09:05,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 14:09:05,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933298502] [2023-12-21 14:09:05,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:09:05,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 14:09:05,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:09:05,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 14:09:05,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-21 14:09:05,636 INFO L87 Difference]: Start difference. First operand 2271 states and 3541 transitions. Second operand has 8 states, 8 states have (on average 17.375) internal successors, (139), 8 states have internal predecessors, (139), 0 states have call successors, (0), 0 states 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 14:09:06,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:09:06,116 INFO L93 Difference]: Finished difference Result 24688 states and 38596 transitions. [2023-12-21 14:09:06,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-21 14:09:06,117 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.375) internal successors, (139), 8 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2023-12-21 14:09:06,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:09:06,187 INFO L225 Difference]: With dead ends: 24688 [2023-12-21 14:09:06,187 INFO L226 Difference]: Without dead ends: 22507 [2023-12-21 14:09:06,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2023-12-21 14:09:06,198 INFO L413 NwaCegarLoop]: 629 mSDtfsCounter, 2801 mSDsluCounter, 4660 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2801 SdHoareTripleChecker+Valid, 5289 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 14:09:06,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2801 Valid, 5289 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 14:09:06,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22507 states. [2023-12-21 14:09:06,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22507 to 4487. [2023-12-21 14:09:06,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4487 states, 4486 states have (on average 1.536112349531877) internal successors, (6891), 4486 states have internal predecessors, (6891), 0 states have call successors, (0), 0 states 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 14:09:06,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4487 states to 4487 states and 6891 transitions. [2023-12-21 14:09:06,393 INFO L78 Accepts]: Start accepts. Automaton has 4487 states and 6891 transitions. Word has length 139 [2023-12-21 14:09:06,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:09:06,393 INFO L495 AbstractCegarLoop]: Abstraction has 4487 states and 6891 transitions. [2023-12-21 14:09:06,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.375) internal successors, (139), 8 states have internal predecessors, (139), 0 states have call successors, (0), 0 states 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 14:09:06,393 INFO L276 IsEmpty]: Start isEmpty. Operand 4487 states and 6891 transitions. [2023-12-21 14:09:06,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-21 14:09:06,401 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:09:06,401 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, 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 14:09:06,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-21 14:09:06,401 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:09:06,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:09:06,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1681033387, now seen corresponding path program 1 times [2023-12-21 14:09:06,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:09:06,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416877984] [2023-12-21 14:09:06,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:09:06,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:09:06,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:09:06,474 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 14:09:06,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:09:06,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416877984] [2023-12-21 14:09:06,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416877984] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:09:06,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:09:06,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:09:06,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336167544] [2023-12-21 14:09:06,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:09:06,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:09:06,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:09:06,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:09:06,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:09:06,476 INFO L87 Difference]: Start difference. First operand 4487 states and 6891 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:06,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:09:06,529 INFO L93 Difference]: Finished difference Result 12512 states and 19227 transitions. [2023-12-21 14:09:06,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:09:06,529 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 142 [2023-12-21 14:09:06,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:09:06,541 INFO L225 Difference]: With dead ends: 12512 [2023-12-21 14:09:06,542 INFO L226 Difference]: Without dead ends: 8073 [2023-12-21 14:09:06,548 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 14:09:06,549 INFO L413 NwaCegarLoop]: 513 mSDtfsCounter, 205 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 775 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:09:06,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 775 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:09:06,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8073 states. [2023-12-21 14:09:06,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8073 to 8071. [2023-12-21 14:09:06,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8071 states, 8070 states have (on average 1.5267657992565056) internal successors, (12321), 8070 states have internal predecessors, (12321), 0 states have call successors, (0), 0 states 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 14:09:06,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8071 states to 8071 states and 12321 transitions. [2023-12-21 14:09:06,681 INFO L78 Accepts]: Start accepts. Automaton has 8071 states and 12321 transitions. Word has length 142 [2023-12-21 14:09:06,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:09:06,681 INFO L495 AbstractCegarLoop]: Abstraction has 8071 states and 12321 transitions. [2023-12-21 14:09:06,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:06,682 INFO L276 IsEmpty]: Start isEmpty. Operand 8071 states and 12321 transitions. [2023-12-21 14:09:06,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-21 14:09:06,694 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:09:06,694 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, 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 14:09:06,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-21 14:09:06,694 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:09:06,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:09:06,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1846731307, now seen corresponding path program 1 times [2023-12-21 14:09:06,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:09:06,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089025186] [2023-12-21 14:09:06,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:09:06,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:09:06,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:09:06,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:09:06,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:09:06,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089025186] [2023-12-21 14:09:06,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089025186] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:09:06,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:09:06,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:09:06,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291813048] [2023-12-21 14:09:06,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:09:06,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:09:06,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:09:06,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:09:06,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:09:06,791 INFO L87 Difference]: Start difference. First operand 8071 states and 12321 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states 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 14:09:06,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:09:06,864 INFO L93 Difference]: Finished difference Result 18815 states and 28710 transitions. [2023-12-21 14:09:06,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:09:06,865 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2023-12-21 14:09:06,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:09:06,881 INFO L225 Difference]: With dead ends: 18815 [2023-12-21 14:09:06,882 INFO L226 Difference]: Without dead ends: 10826 [2023-12-21 14:09:06,892 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 14:09:06,894 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 223 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 514 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:09:06,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 514 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:09:06,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10826 states. [2023-12-21 14:09:07,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10826 to 10760. [2023-12-21 14:09:07,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10760 states, 10759 states have (on average 1.5021842178641138) internal successors, (16162), 10759 states have internal predecessors, (16162), 0 states have call successors, (0), 0 states 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 14:09:07,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10760 states to 10760 states and 16162 transitions. [2023-12-21 14:09:07,070 INFO L78 Accepts]: Start accepts. Automaton has 10760 states and 16162 transitions. Word has length 143 [2023-12-21 14:09:07,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:09:07,070 INFO L495 AbstractCegarLoop]: Abstraction has 10760 states and 16162 transitions. [2023-12-21 14:09:07,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states 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 14:09:07,071 INFO L276 IsEmpty]: Start isEmpty. Operand 10760 states and 16162 transitions. [2023-12-21 14:09:07,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-21 14:09:07,087 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:09:07,087 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, 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 14:09:07,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-21 14:09:07,087 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:09:07,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:09:07,088 INFO L85 PathProgramCache]: Analyzing trace with hash 495114378, now seen corresponding path program 1 times [2023-12-21 14:09:07,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:09:07,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830221564] [2023-12-21 14:09:07,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:09:07,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:09:07,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:09:07,361 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 14:09:07,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:09:07,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830221564] [2023-12-21 14:09:07,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830221564] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:09:07,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:09:07,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 14:09:07,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448324838] [2023-12-21 14:09:07,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:09:07,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 14:09:07,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:09:07,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 14:09:07,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-21 14:09:07,363 INFO L87 Difference]: Start difference. First operand 10760 states and 16162 transitions. Second operand has 8 states, 8 states have (on average 17.875) internal successors, (143), 8 states have internal predecessors, (143), 0 states have call successors, (0), 0 states 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 14:09:07,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:09:07,664 INFO L93 Difference]: Finished difference Result 21439 states and 32229 transitions. [2023-12-21 14:09:07,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 14:09:07,665 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.875) internal successors, (143), 8 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2023-12-21 14:09:07,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:09:07,679 INFO L225 Difference]: With dead ends: 21439 [2023-12-21 14:09:07,680 INFO L226 Difference]: Without dead ends: 10762 [2023-12-21 14:09:07,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2023-12-21 14:09:07,691 INFO L413 NwaCegarLoop]: 419 mSDtfsCounter, 1402 mSDsluCounter, 968 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1402 SdHoareTripleChecker+Valid, 1387 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:09:07,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1402 Valid, 1387 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:09:07,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10762 states. [2023-12-21 14:09:07,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10762 to 10760. [2023-12-21 14:09:07,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10760 states, 10759 states have (on average 1.4872200018589088) internal successors, (16001), 10759 states have internal predecessors, (16001), 0 states have call successors, (0), 0 states 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 14:09:07,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10760 states to 10760 states and 16001 transitions. [2023-12-21 14:09:07,839 INFO L78 Accepts]: Start accepts. Automaton has 10760 states and 16001 transitions. Word has length 143 [2023-12-21 14:09:07,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:09:07,839 INFO L495 AbstractCegarLoop]: Abstraction has 10760 states and 16001 transitions. [2023-12-21 14:09:07,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.875) internal successors, (143), 8 states have internal predecessors, (143), 0 states have call successors, (0), 0 states 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 14:09:07,840 INFO L276 IsEmpty]: Start isEmpty. Operand 10760 states and 16001 transitions. [2023-12-21 14:09:07,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-21 14:09:07,855 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:09:07,856 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, 1, 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 14:09:07,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-21 14:09:07,856 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:09:07,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:09:07,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1071008754, now seen corresponding path program 1 times [2023-12-21 14:09:07,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:09:07,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30226902] [2023-12-21 14:09:07,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:09:07,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:09:07,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:09:07,920 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 14:09:07,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:09:07,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30226902] [2023-12-21 14:09:07,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30226902] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:09:07,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:09:07,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:09:07,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262757468] [2023-12-21 14:09:07,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:09:07,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:09:07,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:09:07,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:09:07,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:09:07,922 INFO L87 Difference]: Start difference. First operand 10760 states and 16001 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 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 14:09:08,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:09:08,154 INFO L93 Difference]: Finished difference Result 30879 states and 45858 transitions. [2023-12-21 14:09:08,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:09:08,154 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 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 144 [2023-12-21 14:09:08,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:09:08,186 INFO L225 Difference]: With dead ends: 30879 [2023-12-21 14:09:08,186 INFO L226 Difference]: Without dead ends: 21345 [2023-12-21 14:09:08,201 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 14:09:08,202 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 228 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 14:09:08,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 388 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 14:09:08,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21345 states. [2023-12-21 14:09:08,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21345 to 21343. [2023-12-21 14:09:08,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21343 states, 21342 states have (on average 1.4790553837503515) internal successors, (31566), 21342 states have internal predecessors, (31566), 0 states have call successors, (0), 0 states 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 14:09:08,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21343 states to 21343 states and 31566 transitions. [2023-12-21 14:09:08,551 INFO L78 Accepts]: Start accepts. Automaton has 21343 states and 31566 transitions. Word has length 144 [2023-12-21 14:09:08,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:09:08,551 INFO L495 AbstractCegarLoop]: Abstraction has 21343 states and 31566 transitions. [2023-12-21 14:09:08,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 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 14:09:08,551 INFO L276 IsEmpty]: Start isEmpty. Operand 21343 states and 31566 transitions. [2023-12-21 14:09:08,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-21 14:09:08,584 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:09:08,584 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, 1, 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 14:09:08,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-21 14:09:08,585 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:09:08,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:09:08,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1667141645, now seen corresponding path program 1 times [2023-12-21 14:09:08,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:09:08,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945949750] [2023-12-21 14:09:08,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:09:08,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:09:08,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:09:08,644 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 14:09:08,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:09:08,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945949750] [2023-12-21 14:09:08,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945949750] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:09:08,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:09:08,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:09:08,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008823875] [2023-12-21 14:09:08,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:09:08,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:09:08,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:09:08,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:09:08,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:09:08,646 INFO L87 Difference]: Start difference. First operand 21343 states and 31566 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 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 14:09:08,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:09:08,998 INFO L93 Difference]: Finished difference Result 61448 states and 90837 transitions. [2023-12-21 14:09:08,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:09:08,999 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 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 144 [2023-12-21 14:09:08,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:09:09,063 INFO L225 Difference]: With dead ends: 61448 [2023-12-21 14:09:09,063 INFO L226 Difference]: Without dead ends: 42430 [2023-12-21 14:09:09,091 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 14:09:09,092 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 228 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 14:09:09,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 392 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 14:09:09,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42430 states. [2023-12-21 14:09:09,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42430 to 42428. [2023-12-21 14:09:09,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42428 states, 42427 states have (on average 1.4724821458033799) internal successors, (62473), 42427 states have internal predecessors, (62473), 0 states have call successors, (0), 0 states 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 14:09:09,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42428 states to 42428 states and 62473 transitions. [2023-12-21 14:09:09,760 INFO L78 Accepts]: Start accepts. Automaton has 42428 states and 62473 transitions. Word has length 144 [2023-12-21 14:09:09,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:09:09,760 INFO L495 AbstractCegarLoop]: Abstraction has 42428 states and 62473 transitions. [2023-12-21 14:09:09,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 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 14:09:09,761 INFO L276 IsEmpty]: Start isEmpty. Operand 42428 states and 62473 transitions. [2023-12-21 14:09:09,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-21 14:09:09,822 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:09:09,822 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, 1, 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 14:09:09,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-21 14:09:09,823 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:09:09,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:09:09,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1577072904, now seen corresponding path program 1 times [2023-12-21 14:09:09,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:09:09,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522715612] [2023-12-21 14:09:09,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:09:09,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:09:09,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:09:10,172 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 14:09:10,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:09:10,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522715612] [2023-12-21 14:09:10,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522715612] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:09:10,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:09:10,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 14:09:10,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843958500] [2023-12-21 14:09:10,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:09:10,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 14:09:10,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:09:10,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 14:09:10,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-21 14:09:10,175 INFO L87 Difference]: Start difference. First operand 42428 states and 62473 transitions. Second operand has 8 states, 8 states have (on average 18.0) internal successors, (144), 8 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 14:09:11,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:09:11,173 INFO L93 Difference]: Finished difference Result 260646 states and 383604 transitions. [2023-12-21 14:09:11,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 14:09:11,174 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.0) internal successors, (144), 8 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 144 [2023-12-21 14:09:11,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:09:11,748 INFO L225 Difference]: With dead ends: 260646 [2023-12-21 14:09:11,748 INFO L226 Difference]: Without dead ends: 226660 [2023-12-21 14:09:11,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-21 14:09:11,795 INFO L413 NwaCegarLoop]: 656 mSDtfsCounter, 2245 mSDsluCounter, 1385 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2245 SdHoareTripleChecker+Valid, 2041 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 14:09:11,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2245 Valid, 2041 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 14:09:11,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226660 states. [2023-12-21 14:09:13,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226660 to 78924. [2023-12-21 14:09:13,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78924 states, 78923 states have (on average 1.4650355409703129) internal successors, (115625), 78923 states have internal predecessors, (115625), 0 states have call successors, (0), 0 states 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 14:09:13,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78924 states to 78924 states and 115625 transitions. [2023-12-21 14:09:13,874 INFO L78 Accepts]: Start accepts. Automaton has 78924 states and 115625 transitions. Word has length 144 [2023-12-21 14:09:13,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:09:13,883 INFO L495 AbstractCegarLoop]: Abstraction has 78924 states and 115625 transitions. [2023-12-21 14:09:13,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.0) internal successors, (144), 8 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 14:09:13,883 INFO L276 IsEmpty]: Start isEmpty. Operand 78924 states and 115625 transitions. [2023-12-21 14:09:13,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-21 14:09:13,976 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:09:13,976 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, 1, 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 14:09:13,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-21 14:09:13,976 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:09:13,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:09:13,977 INFO L85 PathProgramCache]: Analyzing trace with hash -739985976, now seen corresponding path program 1 times [2023-12-21 14:09:13,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:09:13,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373699602] [2023-12-21 14:09:13,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:09:13,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:09:14,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:09:14,172 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 14:09:14,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:09:14,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373699602] [2023-12-21 14:09:14,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373699602] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:09:14,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:09:14,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 14:09:14,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753718164] [2023-12-21 14:09:14,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:09:14,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 14:09:14,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:09:14,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 14:09:14,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-21 14:09:14,174 INFO L87 Difference]: Start difference. First operand 78924 states and 115625 transitions. Second operand has 8 states, 8 states have (on average 18.0) internal successors, (144), 8 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 14:09:15,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:09:15,318 INFO L93 Difference]: Finished difference Result 296238 states and 435516 transitions. [2023-12-21 14:09:15,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 14:09:15,319 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.0) internal successors, (144), 8 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 144 [2023-12-21 14:09:15,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:09:15,836 INFO L225 Difference]: With dead ends: 296238 [2023-12-21 14:09:15,837 INFO L226 Difference]: Without dead ends: 262252 [2023-12-21 14:09:15,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-21 14:09:15,896 INFO L413 NwaCegarLoop]: 532 mSDtfsCounter, 2367 mSDsluCounter, 1479 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2367 SdHoareTripleChecker+Valid, 2011 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:09:15,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2367 Valid, 2011 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:09:16,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262252 states. [2023-12-21 14:09:18,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262252 to 131460. [2023-12-21 14:09:18,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131460 states, 131459 states have (on average 1.4582873747708411) internal successors, (191705), 131459 states have internal predecessors, (191705), 0 states have call successors, (0), 0 states 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 14:09:18,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131460 states to 131460 states and 191705 transitions. [2023-12-21 14:09:18,326 INFO L78 Accepts]: Start accepts. Automaton has 131460 states and 191705 transitions. Word has length 144 [2023-12-21 14:09:18,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:09:18,326 INFO L495 AbstractCegarLoop]: Abstraction has 131460 states and 191705 transitions. [2023-12-21 14:09:18,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.0) internal successors, (144), 8 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 14:09:18,326 INFO L276 IsEmpty]: Start isEmpty. Operand 131460 states and 191705 transitions. [2023-12-21 14:09:18,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-21 14:09:18,755 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:09:18,755 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:09:18,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-21 14:09:18,755 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:09:18,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:09:18,755 INFO L85 PathProgramCache]: Analyzing trace with hash 939177966, now seen corresponding path program 1 times [2023-12-21 14:09:18,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:09:18,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153915864] [2023-12-21 14:09:18,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:09:18,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:09:18,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:09:18,946 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 14:09:18,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:09:18,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153915864] [2023-12-21 14:09:18,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153915864] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:09:18,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:09:18,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 14:09:18,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57140327] [2023-12-21 14:09:18,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:09:18,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 14:09:18,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:09:18,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 14:09:18,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-21 14:09:18,948 INFO L87 Difference]: Start difference. First operand 131460 states and 191705 transitions. Second operand has 8 states, 8 states have (on average 18.0) internal successors, (144), 8 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 14:09:20,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:09:20,104 INFO L93 Difference]: Finished difference Result 330702 states and 485724 transitions. [2023-12-21 14:09:20,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 14:09:20,105 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.0) internal successors, (144), 8 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 144 [2023-12-21 14:09:20,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:09:20,744 INFO L225 Difference]: With dead ends: 330702 [2023-12-21 14:09:20,744 INFO L226 Difference]: Without dead ends: 296716 [2023-12-21 14:09:20,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-21 14:09:20,810 INFO L413 NwaCegarLoop]: 552 mSDtfsCounter, 2150 mSDsluCounter, 1585 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2150 SdHoareTripleChecker+Valid, 2137 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:09:20,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2150 Valid, 2137 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:09:21,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296716 states. [2023-12-21 14:09:23,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296716 to 167160. [2023-12-21 14:09:23,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167160 states, 167159 states have (on average 1.4582343756543172) internal successors, (243757), 167159 states have internal predecessors, (243757), 0 states have call successors, (0), 0 states 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 14:09:24,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167160 states to 167160 states and 243757 transitions. [2023-12-21 14:09:24,015 INFO L78 Accepts]: Start accepts. Automaton has 167160 states and 243757 transitions. Word has length 144 [2023-12-21 14:09:24,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:09:24,016 INFO L495 AbstractCegarLoop]: Abstraction has 167160 states and 243757 transitions. [2023-12-21 14:09:24,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.0) internal successors, (144), 8 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 14:09:24,016 INFO L276 IsEmpty]: Start isEmpty. Operand 167160 states and 243757 transitions. [2023-12-21 14:09:24,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-21 14:09:24,176 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:09:24,176 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, 1, 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 14:09:24,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-21 14:09:24,176 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:09:24,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:09:24,177 INFO L85 PathProgramCache]: Analyzing trace with hash -826161854, now seen corresponding path program 1 times [2023-12-21 14:09:24,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:09:24,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517624300] [2023-12-21 14:09:24,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:09:24,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:09:24,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:09:24,637 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 14:09:24,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:09:24,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517624300] [2023-12-21 14:09:24,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517624300] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:09:24,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:09:24,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 14:09:24,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670657445] [2023-12-21 14:09:24,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:09:24,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 14:09:24,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:09:24,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 14:09:24,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-21 14:09:24,640 INFO L87 Difference]: Start difference. First operand 167160 states and 243757 transitions. Second operand has 8 states, 8 states have (on average 18.0) internal successors, (144), 8 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 14:09:25,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:09:25,862 INFO L93 Difference]: Finished difference Result 365822 states and 536908 transitions. [2023-12-21 14:09:25,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 14:09:25,864 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.0) internal successors, (144), 8 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 144 [2023-12-21 14:09:25,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:09:26,435 INFO L225 Difference]: With dead ends: 365822 [2023-12-21 14:09:26,436 INFO L226 Difference]: Without dead ends: 331836 [2023-12-21 14:09:26,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-21 14:09:26,528 INFO L413 NwaCegarLoop]: 569 mSDtfsCounter, 2139 mSDsluCounter, 2057 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2139 SdHoareTripleChecker+Valid, 2626 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:09:26,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2139 Valid, 2626 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:09:26,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331836 states. [2023-12-21 14:09:29,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331836 to 203112. [2023-12-21 14:09:29,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203112 states, 203111 states have (on average 1.458458675305621) internal successors, (296229), 203111 states have internal predecessors, (296229), 0 states have call successors, (0), 0 states 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 14:09:30,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203112 states to 203112 states and 296229 transitions. [2023-12-21 14:09:30,552 INFO L78 Accepts]: Start accepts. Automaton has 203112 states and 296229 transitions. Word has length 144 [2023-12-21 14:09:30,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:09:30,553 INFO L495 AbstractCegarLoop]: Abstraction has 203112 states and 296229 transitions. [2023-12-21 14:09:30,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.0) internal successors, (144), 8 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 14:09:30,553 INFO L276 IsEmpty]: Start isEmpty. Operand 203112 states and 296229 transitions. [2023-12-21 14:09:30,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-21 14:09:30,693 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:09:30,693 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, 1, 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 14:09:30,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-21 14:09:30,694 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:09:30,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:09:30,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1536595626, now seen corresponding path program 1 times [2023-12-21 14:09:30,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:09:30,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202987143] [2023-12-21 14:09:30,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:09:30,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:09:30,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:09:30,853 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 14:09:30,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:09:30,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202987143] [2023-12-21 14:09:30,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202987143] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:09:30,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:09:30,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 14:09:30,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925929721] [2023-12-21 14:09:30,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:09:30,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 14:09:30,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:09:30,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 14:09:30,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-21 14:09:30,854 INFO L87 Difference]: Start difference. First operand 203112 states and 296229 transitions. Second operand has 8 states, 8 states have (on average 18.0) internal successors, (144), 8 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 14:09:32,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:09:32,503 INFO L93 Difference]: Finished difference Result 401722 states and 589304 transitions. [2023-12-21 14:09:32,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 14:09:32,504 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.0) internal successors, (144), 8 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 144 [2023-12-21 14:09:32,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:09:33,002 INFO L225 Difference]: With dead ends: 401722 [2023-12-21 14:09:33,002 INFO L226 Difference]: Without dead ends: 367736 [2023-12-21 14:09:33,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-21 14:09:33,098 INFO L413 NwaCegarLoop]: 508 mSDtfsCounter, 2331 mSDsluCounter, 2213 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2331 SdHoareTripleChecker+Valid, 2721 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 14:09:33,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2331 Valid, 2721 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 14:09:33,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367736 states. [2023-12-21 14:09:36,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367736 to 239208. [2023-12-21 14:09:36,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239208 states, 239207 states have (on average 1.4587407559143337) internal successors, (348941), 239207 states have internal predecessors, (348941), 0 states have call successors, (0), 0 states 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 14:09:37,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239208 states to 239208 states and 348941 transitions. [2023-12-21 14:09:37,355 INFO L78 Accepts]: Start accepts. Automaton has 239208 states and 348941 transitions. Word has length 144 [2023-12-21 14:09:37,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:09:37,356 INFO L495 AbstractCegarLoop]: Abstraction has 239208 states and 348941 transitions. [2023-12-21 14:09:37,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.0) internal successors, (144), 8 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 14:09:37,356 INFO L276 IsEmpty]: Start isEmpty. Operand 239208 states and 348941 transitions. [2023-12-21 14:09:37,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-21 14:09:37,892 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:09:37,892 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, 1, 1, 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 14:09:37,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-21 14:09:37,896 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:09:37,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:09:37,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1400878562, now seen corresponding path program 1 times [2023-12-21 14:09:37,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:09:37,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729873072] [2023-12-21 14:09:37,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:09:37,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:09:37,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:09:38,039 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 14:09:38,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:09:38,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729873072] [2023-12-21 14:09:38,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729873072] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:09:38,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:09:38,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 14:09:38,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628088804] [2023-12-21 14:09:38,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:09:38,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 14:09:38,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:09:38,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 14:09:38,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-21 14:09:38,040 INFO L87 Difference]: Start difference. First operand 239208 states and 348941 transitions. Second operand has 8 states, 8 states have (on average 18.125) internal successors, (145), 8 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:39,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:09:39,574 INFO L93 Difference]: Finished difference Result 416110 states and 611076 transitions. [2023-12-21 14:09:39,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 14:09:39,574 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.125) internal successors, (145), 8 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2023-12-21 14:09:39,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:09:40,521 INFO L225 Difference]: With dead ends: 416110 [2023-12-21 14:09:40,522 INFO L226 Difference]: Without dead ends: 393068 [2023-12-21 14:09:40,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-21 14:09:40,586 INFO L413 NwaCegarLoop]: 511 mSDtfsCounter, 2348 mSDsluCounter, 1745 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2348 SdHoareTripleChecker+Valid, 2256 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:09:40,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2348 Valid, 2256 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:09:40,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393068 states. [2023-12-21 14:09:43,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393068 to 264540. [2023-12-21 14:09:44,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264540 states, 264539 states have (on average 1.4611115941316781) internal successors, (386521), 264539 states have internal predecessors, (386521), 0 states have call successors, (0), 0 states 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 14:09:44,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264540 states to 264540 states and 386521 transitions. [2023-12-21 14:09:44,820 INFO L78 Accepts]: Start accepts. Automaton has 264540 states and 386521 transitions. Word has length 145 [2023-12-21 14:09:44,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:09:44,820 INFO L495 AbstractCegarLoop]: Abstraction has 264540 states and 386521 transitions. [2023-12-21 14:09:44,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.125) internal successors, (145), 8 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:44,820 INFO L276 IsEmpty]: Start isEmpty. Operand 264540 states and 386521 transitions. [2023-12-21 14:09:45,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-21 14:09:45,009 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:09:45,009 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, 1, 1, 1, 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 14:09:45,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-21 14:09:45,009 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:09:45,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:09:45,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1495103432, now seen corresponding path program 1 times [2023-12-21 14:09:45,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:09:45,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737759684] [2023-12-21 14:09:45,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:09:45,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:09:45,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:09:45,451 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 14:09:45,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:09:45,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737759684] [2023-12-21 14:09:45,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737759684] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:09:45,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:09:45,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 14:09:45,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011668676] [2023-12-21 14:09:45,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:09:45,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 14:09:45,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:09:45,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 14:09:45,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:09:45,452 INFO L87 Difference]: Start difference. First operand 264540 states and 386521 transitions. Second operand has 5 states, 5 states have (on average 29.2) 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 14:09:46,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:09:46,862 INFO L93 Difference]: Finished difference Result 528950 states and 772882 transitions. [2023-12-21 14:09:46,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 14:09:46,862 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) 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 146 [2023-12-21 14:09:46,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:09:47,555 INFO L225 Difference]: With dead ends: 528950 [2023-12-21 14:09:47,556 INFO L226 Difference]: Without dead ends: 264540 [2023-12-21 14:09:47,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 14:09:47,637 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 850 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 850 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:09:47,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [850 Valid, 213 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:09:47,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264540 states. [2023-12-21 14:09:50,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264540 to 264540. [2023-12-21 14:09:50,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264540 states, 264539 states have (on average 1.4498013525415911) internal successors, (383529), 264539 states have internal predecessors, (383529), 0 states have call successors, (0), 0 states 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 14:09:51,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264540 states to 264540 states and 383529 transitions. [2023-12-21 14:09:51,059 INFO L78 Accepts]: Start accepts. Automaton has 264540 states and 383529 transitions. Word has length 146 [2023-12-21 14:09:51,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:09:51,059 INFO L495 AbstractCegarLoop]: Abstraction has 264540 states and 383529 transitions. [2023-12-21 14:09:51,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) 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 14:09:51,059 INFO L276 IsEmpty]: Start isEmpty. Operand 264540 states and 383529 transitions. [2023-12-21 14:09:51,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-21 14:09:51,276 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:09:51,276 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, 1, 1, 1, 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 14:09:51,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-21 14:09:51,276 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:09:51,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:09:51,277 INFO L85 PathProgramCache]: Analyzing trace with hash -897363966, now seen corresponding path program 1 times [2023-12-21 14:09:51,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:09:51,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426249868] [2023-12-21 14:09:51,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:09:51,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:09:51,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:09:51,371 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 14:09:51,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:09:51,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426249868] [2023-12-21 14:09:51,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426249868] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:09:51,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:09:51,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 14:09:51,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006580370] [2023-12-21 14:09:51,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:09:51,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 14:09:51,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:09:51,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 14:09:51,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:09:51,372 INFO L87 Difference]: Start difference. First operand 264540 states and 383529 transitions. Second operand has 5 states, 5 states have (on average 29.2) 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 14:09:53,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:09:53,366 INFO L93 Difference]: Finished difference Result 531462 states and 777053 transitions. [2023-12-21 14:09:53,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 14:09:53,366 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) 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 146 [2023-12-21 14:09:53,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:09:54,116 INFO L225 Difference]: With dead ends: 531462 [2023-12-21 14:09:54,117 INFO L226 Difference]: Without dead ends: 309132 [2023-12-21 14:09:54,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 14:09:54,196 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 1303 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1303 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 14:09:54,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1303 Valid, 295 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 14:09:54,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309132 states. [2023-12-21 14:09:57,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309132 to 309130. [2023-12-21 14:09:57,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309130 states, 309129 states have (on average 1.4608982010746323) internal successors, (451606), 309129 states have internal predecessors, (451606), 0 states have call successors, (0), 0 states 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 14:09:58,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309130 states to 309130 states and 451606 transitions. [2023-12-21 14:09:58,337 INFO L78 Accepts]: Start accepts. Automaton has 309130 states and 451606 transitions. Word has length 146 [2023-12-21 14:09:58,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:09:58,338 INFO L495 AbstractCegarLoop]: Abstraction has 309130 states and 451606 transitions. [2023-12-21 14:09:58,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) 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 14:09:58,338 INFO L276 IsEmpty]: Start isEmpty. Operand 309130 states and 451606 transitions. [2023-12-21 14:09:58,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-21 14:09:58,504 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:09:58,505 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, 1, 1, 1, 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 14:09:58,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-21 14:09:58,505 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:09:58,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:09:58,505 INFO L85 PathProgramCache]: Analyzing trace with hash -878727609, now seen corresponding path program 1 times [2023-12-21 14:09:58,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:09:58,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147730776] [2023-12-21 14:09:58,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:09:58,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:09:58,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:09:58,599 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 14:09:58,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:09:58,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147730776] [2023-12-21 14:09:58,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147730776] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:09:58,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:09:58,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 14:09:58,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497526840] [2023-12-21 14:09:58,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:09:58,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 14:09:58,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:09:58,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 14:09:58,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:09:58,601 INFO L87 Difference]: Start difference. First operand 309130 states and 451606 transitions. Second operand has 5 states, 5 states have (on average 29.2) 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 14:10:00,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:10:00,785 INFO L93 Difference]: Finished difference Result 618196 states and 903141 transitions. [2023-12-21 14:10:00,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 14:10:00,786 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) 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 146 [2023-12-21 14:10:00,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:10:01,346 INFO L225 Difference]: With dead ends: 618196 [2023-12-21 14:10:01,346 INFO L226 Difference]: Without dead ends: 309130 [2023-12-21 14:10:01,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 14:10:01,842 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 861 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 861 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:10:01,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [861 Valid, 197 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:10:02,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309130 states. [2023-12-21 14:10:05,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309130 to 309130. [2023-12-21 14:10:05,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309130 states, 309129 states have (on average 1.4501518783420513) internal successors, (448284), 309129 states have internal predecessors, (448284), 0 states have call successors, (0), 0 states 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 14:10:06,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309130 states to 309130 states and 448284 transitions. [2023-12-21 14:10:06,292 INFO L78 Accepts]: Start accepts. Automaton has 309130 states and 448284 transitions. Word has length 146 [2023-12-21 14:10:06,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:10:06,292 INFO L495 AbstractCegarLoop]: Abstraction has 309130 states and 448284 transitions. [2023-12-21 14:10:06,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) 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 14:10:06,292 INFO L276 IsEmpty]: Start isEmpty. Operand 309130 states and 448284 transitions. [2023-12-21 14:10:06,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-21 14:10:06,455 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:10:06,456 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, 1, 1, 1, 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 14:10:06,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-21 14:10:06,456 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:10:06,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:10:06,456 INFO L85 PathProgramCache]: Analyzing trace with hash 480479953, now seen corresponding path program 1 times [2023-12-21 14:10:06,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:10:06,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056287971] [2023-12-21 14:10:06,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:10:06,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:10:06,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:10:06,548 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 14:10:06,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:10:06,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056287971] [2023-12-21 14:10:06,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056287971] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:10:06,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:10:06,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 14:10:06,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049740490] [2023-12-21 14:10:06,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:10:06,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 14:10:06,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:10:06,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 14:10:06,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:10:06,549 INFO L87 Difference]: Start difference. First operand 309130 states and 448284 transitions. Second operand has 5 states, 5 states have (on average 29.2) 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 14:10:08,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:10:08,503 INFO L93 Difference]: Finished difference Result 618160 states and 896453 transitions. [2023-12-21 14:10:08,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 14:10:08,504 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) 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 146 [2023-12-21 14:10:08,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:10:08,915 INFO L225 Difference]: With dead ends: 618160 [2023-12-21 14:10:08,915 INFO L226 Difference]: Without dead ends: 309130 [2023-12-21 14:10:09,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 14:10:09,347 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 813 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 813 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:10:09,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [813 Valid, 221 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:10:09,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309130 states. [2023-12-21 14:10:12,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309130 to 309130. [2023-12-21 14:10:12,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309130 states, 309129 states have (on average 1.4382086442876598) internal successors, (444592), 309129 states have internal predecessors, (444592), 0 states have call successors, (0), 0 states 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 14:10:13,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309130 states to 309130 states and 444592 transitions. [2023-12-21 14:10:13,649 INFO L78 Accepts]: Start accepts. Automaton has 309130 states and 444592 transitions. Word has length 146 [2023-12-21 14:10:13,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:10:13,650 INFO L495 AbstractCegarLoop]: Abstraction has 309130 states and 444592 transitions. [2023-12-21 14:10:13,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) 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 14:10:13,650 INFO L276 IsEmpty]: Start isEmpty. Operand 309130 states and 444592 transitions. [2023-12-21 14:10:13,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-21 14:10:13,817 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:10:13,818 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, 1, 1, 1, 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 14:10:13,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-21 14:10:13,818 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:10:13,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:10:13,818 INFO L85 PathProgramCache]: Analyzing trace with hash -752436751, now seen corresponding path program 1 times [2023-12-21 14:10:13,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:10:13,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661271919] [2023-12-21 14:10:13,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:10:13,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:10:13,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:10:13,885 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 14:10:13,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:10:13,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661271919] [2023-12-21 14:10:13,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661271919] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:10:13,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:10:13,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 14:10:13,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382029012] [2023-12-21 14:10:13,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:10:13,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 14:10:13,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:10:13,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 14:10:13,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:10:13,886 INFO L87 Difference]: Start difference. First operand 309130 states and 444592 transitions. Second operand has 5 states, 5 states have (on average 29.2) 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 14:10:15,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:10:15,755 INFO L93 Difference]: Finished difference Result 618184 states and 889099 transitions. [2023-12-21 14:10:15,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 14:10:15,755 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) 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 146 [2023-12-21 14:10:15,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:10:16,480 INFO L225 Difference]: With dead ends: 618184 [2023-12-21 14:10:16,480 INFO L226 Difference]: Without dead ends: 309130 [2023-12-21 14:10:16,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 14:10:16,585 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 830 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 830 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:10:16,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [830 Valid, 205 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:10:16,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309130 states. [2023-12-21 14:10:19,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309130 to 309130. [2023-12-21 14:10:19,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309130 states, 309129 states have (on average 1.427326455945576) internal successors, (441228), 309129 states have internal predecessors, (441228), 0 states have call successors, (0), 0 states 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 14:10:20,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309130 states to 309130 states and 441228 transitions. [2023-12-21 14:10:20,983 INFO L78 Accepts]: Start accepts. Automaton has 309130 states and 441228 transitions. Word has length 146 [2023-12-21 14:10:20,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:10:20,983 INFO L495 AbstractCegarLoop]: Abstraction has 309130 states and 441228 transitions. [2023-12-21 14:10:20,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) 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 14:10:20,983 INFO L276 IsEmpty]: Start isEmpty. Operand 309130 states and 441228 transitions. [2023-12-21 14:10:21,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-21 14:10:21,212 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:10:21,212 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, 1, 1, 1, 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 14:10:21,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-21 14:10:21,213 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:10:21,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:10:21,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1327911129, now seen corresponding path program 1 times [2023-12-21 14:10:21,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:10:21,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819572443] [2023-12-21 14:10:21,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:10:21,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:10:21,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:10:21,385 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 14:10:21,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:10:21,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819572443] [2023-12-21 14:10:21,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819572443] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:10:21,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:10:21,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:10:21,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504626562] [2023-12-21 14:10:21,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:10:21,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:10:21,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:10:21,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:10:21,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:10:21,387 INFO L87 Difference]: Start difference. First operand 309130 states and 441228 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) [2023-12-21 14:10:23,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:10:23,524 INFO L93 Difference]: Finished difference Result 565934 states and 810350 transitions. [2023-12-21 14:10:23,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:10:23,524 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 146 [2023-12-21 14:10:23,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:10:24,048 INFO L225 Difference]: With dead ends: 565934 [2023-12-21 14:10:24,048 INFO L226 Difference]: Without dead ends: 268751 [2023-12-21 14:10:24,272 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 14:10:24,273 INFO L413 NwaCegarLoop]: 299 mSDtfsCounter, 122 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:10:24,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 530 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:10:24,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268751 states. [2023-12-21 14:10:27,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268751 to 268749. [2023-12-21 14:10:27,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268749 states, 268748 states have (on average 1.4265966630449343) internal successors, (383395), 268748 states have internal predecessors, (383395), 0 states have call successors, (0), 0 states 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 14:10:28,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268749 states to 268749 states and 383395 transitions. [2023-12-21 14:10:28,170 INFO L78 Accepts]: Start accepts. Automaton has 268749 states and 383395 transitions. Word has length 146 [2023-12-21 14:10:28,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:10:28,170 INFO L495 AbstractCegarLoop]: Abstraction has 268749 states and 383395 transitions. [2023-12-21 14:10:28,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2023-12-21 14:10:28,171 INFO L276 IsEmpty]: Start isEmpty. Operand 268749 states and 383395 transitions. [2023-12-21 14:10:28,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-21 14:10:28,249 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:10:28,249 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, 1, 1, 1, 1, 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 14:10:28,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-21 14:10:28,249 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:10:28,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:10:28,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1395159578, now seen corresponding path program 1 times [2023-12-21 14:10:28,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:10:28,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155384856] [2023-12-21 14:10:28,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:10:28,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:10:28,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:10:28,321 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 14:10:28,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:10:28,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155384856] [2023-12-21 14:10:28,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155384856] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:10:28,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:10:28,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:10:28,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402037184] [2023-12-21 14:10:28,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:10:28,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:10:28,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:10:28,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:10:28,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:10:28,323 INFO L87 Difference]: Start difference. First operand 268749 states and 383395 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 states 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 14:10:29,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:10:29,368 INFO L93 Difference]: Finished difference Result 397153 states and 566517 transitions. [2023-12-21 14:10:29,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:10:29,368 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 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 147 [2023-12-21 14:10:29,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:10:29,523 INFO L225 Difference]: With dead ends: 397153 [2023-12-21 14:10:29,523 INFO L226 Difference]: Without dead ends: 135294 [2023-12-21 14:10:29,620 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 14:10:29,620 INFO L413 NwaCegarLoop]: 293 mSDtfsCounter, 115 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:10:29,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 508 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:10:29,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135294 states. [2023-12-21 14:10:31,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135294 to 135292. [2023-12-21 14:10:31,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135292 states, 135291 states have (on average 1.4160291519761108) internal successors, (191576), 135291 states have internal predecessors, (191576), 0 states have call successors, (0), 0 states 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 14:10:31,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135292 states to 135292 states and 191576 transitions. [2023-12-21 14:10:31,431 INFO L78 Accepts]: Start accepts. Automaton has 135292 states and 191576 transitions. Word has length 147 [2023-12-21 14:10:31,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:10:31,431 INFO L495 AbstractCegarLoop]: Abstraction has 135292 states and 191576 transitions. [2023-12-21 14:10:31,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 states 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 14:10:31,432 INFO L276 IsEmpty]: Start isEmpty. Operand 135292 states and 191576 transitions. [2023-12-21 14:10:31,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-21 14:10:31,479 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:10:31,479 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:10:31,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-21 14:10:31,479 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:10:31,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:10:31,480 INFO L85 PathProgramCache]: Analyzing trace with hash -37716976, now seen corresponding path program 1 times [2023-12-21 14:10:31,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:10:31,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849332904] [2023-12-21 14:10:31,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:10:31,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:10:31,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:10:31,548 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 14:10:31,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:10:31,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849332904] [2023-12-21 14:10:31,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849332904] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:10:31,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:10:31,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:10:31,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899878010] [2023-12-21 14:10:31,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:10:31,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:10:31,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:10:31,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:10:31,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:10:31,550 INFO L87 Difference]: Start difference. First operand 135292 states and 191576 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 states 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 14:10:32,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:10:32,233 INFO L93 Difference]: Finished difference Result 199496 states and 282418 transitions. [2023-12-21 14:10:32,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:10:32,233 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 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 147 [2023-12-21 14:10:32,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:10:32,308 INFO L225 Difference]: With dead ends: 199496 [2023-12-21 14:10:32,308 INFO L226 Difference]: Without dead ends: 68328 [2023-12-21 14:10:32,359 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 14:10:32,359 INFO L413 NwaCegarLoop]: 318 mSDtfsCounter, 128 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:10:32,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 501 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:10:32,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68328 states. [2023-12-21 14:10:33,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68328 to 68326. [2023-12-21 14:10:33,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68326 states, 68325 states have (on average 1.405576289791438) internal successors, (96036), 68325 states have internal predecessors, (96036), 0 states have call successors, (0), 0 states 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 14:10:33,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68326 states to 68326 states and 96036 transitions. [2023-12-21 14:10:33,220 INFO L78 Accepts]: Start accepts. Automaton has 68326 states and 96036 transitions. Word has length 147 [2023-12-21 14:10:33,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:10:33,220 INFO L495 AbstractCegarLoop]: Abstraction has 68326 states and 96036 transitions. [2023-12-21 14:10:33,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 states 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 14:10:33,220 INFO L276 IsEmpty]: Start isEmpty. Operand 68326 states and 96036 transitions. [2023-12-21 14:10:33,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-21 14:10:33,248 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:10:33,248 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, 1, 1, 1, 1, 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 14:10:33,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-21 14:10:33,248 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:10:33,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:10:33,249 INFO L85 PathProgramCache]: Analyzing trace with hash 471755484, now seen corresponding path program 1 times [2023-12-21 14:10:33,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:10:33,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181886529] [2023-12-21 14:10:33,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:10:33,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:10:33,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:10:33,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:10:33,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:10:33,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181886529] [2023-12-21 14:10:33,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181886529] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:10:33,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:10:33,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:10:33,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407408313] [2023-12-21 14:10:33,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:10:33,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:10:33,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:10:33,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:10:33,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:10:33,543 INFO L87 Difference]: Start difference. First operand 68326 states and 96036 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 states 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 14:10:33,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:10:33,762 INFO L93 Difference]: Finished difference Result 100430 states and 141098 transitions. [2023-12-21 14:10:33,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:10:33,763 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 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 147 [2023-12-21 14:10:33,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:10:33,801 INFO L225 Difference]: With dead ends: 100430 [2023-12-21 14:10:33,801 INFO L226 Difference]: Without dead ends: 34884 [2023-12-21 14:10:33,836 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 14:10:33,837 INFO L413 NwaCegarLoop]: 313 mSDtfsCounter, 123 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:10:33,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 480 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:10:33,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34884 states. [2023-12-21 14:10:34,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34884 to 34882. [2023-12-21 14:10:34,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34882 states, 34881 states have (on average 1.3958315415269058) internal successors, (48688), 34881 states have internal predecessors, (48688), 0 states have call successors, (0), 0 states 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 14:10:34,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34882 states to 34882 states and 48688 transitions. [2023-12-21 14:10:34,304 INFO L78 Accepts]: Start accepts. Automaton has 34882 states and 48688 transitions. Word has length 147 [2023-12-21 14:10:34,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:10:34,304 INFO L495 AbstractCegarLoop]: Abstraction has 34882 states and 48688 transitions. [2023-12-21 14:10:34,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 states 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 14:10:34,304 INFO L276 IsEmpty]: Start isEmpty. Operand 34882 states and 48688 transitions. [2023-12-21 14:10:34,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-21 14:10:34,317 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:10:34,317 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, 1, 1, 1, 1, 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 14:10:34,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-21 14:10:34,317 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:10:34,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:10:34,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1594226188, now seen corresponding path program 1 times [2023-12-21 14:10:34,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:10:34,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655000626] [2023-12-21 14:10:34,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:10:34,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:10:34,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:10:34,737 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 14:10:34,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:10:34,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655000626] [2023-12-21 14:10:34,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655000626] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:10:34,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:10:34,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-21 14:10:34,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962612999] [2023-12-21 14:10:34,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:10:34,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-21 14:10:34,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:10:34,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-21 14:10:34,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-12-21 14:10:34,739 INFO L87 Difference]: Start difference. First operand 34882 states and 48688 transitions. Second operand has 13 states, 13 states have (on average 11.307692307692308) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states 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 14:10:36,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:10:36,886 INFO L93 Difference]: Finished difference Result 305376 states and 423408 transitions. [2023-12-21 14:10:36,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-12-21 14:10:36,887 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 11.307692307692308) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 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 147 [2023-12-21 14:10:36,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:10:37,415 INFO L225 Difference]: With dead ends: 305376 [2023-12-21 14:10:37,415 INFO L226 Difference]: Without dead ends: 272262 [2023-12-21 14:10:37,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 545 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=439, Invalid=1631, Unknown=0, NotChecked=0, Total=2070 [2023-12-21 14:10:37,461 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 3073 mSDsluCounter, 1304 mSDsCounter, 0 mSdLazyCounter, 1342 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3073 SdHoareTripleChecker+Valid, 1491 SdHoareTripleChecker+Invalid, 1372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 14:10:37,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3073 Valid, 1491 Invalid, 1372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1342 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 14:10:37,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272262 states. [2023-12-21 14:10:38,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272262 to 35210. [2023-12-21 14:10:38,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35210 states, 35209 states have (on average 1.3955522735664176) internal successors, (49136), 35209 states have internal predecessors, (49136), 0 states have call successors, (0), 0 states 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 14:10:38,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35210 states to 35210 states and 49136 transitions. [2023-12-21 14:10:38,870 INFO L78 Accepts]: Start accepts. Automaton has 35210 states and 49136 transitions. Word has length 147 [2023-12-21 14:10:38,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:10:38,870 INFO L495 AbstractCegarLoop]: Abstraction has 35210 states and 49136 transitions. [2023-12-21 14:10:38,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.307692307692308) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states 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 14:10:38,871 INFO L276 IsEmpty]: Start isEmpty. Operand 35210 states and 49136 transitions. [2023-12-21 14:10:38,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-21 14:10:38,884 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:10:38,884 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, 1, 1, 1, 1, 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 14:10:38,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-21 14:10:38,884 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:10:38,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:10:38,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1244826746, now seen corresponding path program 1 times [2023-12-21 14:10:38,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:10:38,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352873008] [2023-12-21 14:10:38,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:10:38,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:10:38,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:10:39,195 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 14:10:39,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:10:39,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352873008] [2023-12-21 14:10:39,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352873008] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:10:39,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:10:39,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-21 14:10:39,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261362160] [2023-12-21 14:10:39,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:10:39,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-21 14:10:39,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:10:39,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-21 14:10:39,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-12-21 14:10:39,197 INFO L87 Difference]: Start difference. First operand 35210 states and 49136 transitions. Second operand has 13 states, 13 states have (on average 11.307692307692308) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states 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 14:10:40,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:10:40,918 INFO L93 Difference]: Finished difference Result 241306 states and 334646 transitions. [2023-12-21 14:10:40,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-21 14:10:40,919 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 11.307692307692308) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 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 147 [2023-12-21 14:10:40,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:10:41,429 INFO L225 Difference]: With dead ends: 241306 [2023-12-21 14:10:41,429 INFO L226 Difference]: Without dead ends: 207704 [2023-12-21 14:10:41,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=356, Invalid=1284, Unknown=0, NotChecked=0, Total=1640 [2023-12-21 14:10:41,475 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 2715 mSDsluCounter, 1422 mSDsCounter, 0 mSdLazyCounter, 1497 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2715 SdHoareTripleChecker+Valid, 1616 SdHoareTripleChecker+Invalid, 1518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 14:10:41,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2715 Valid, 1616 Invalid, 1518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1497 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 14:10:41,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207704 states. [2023-12-21 14:10:42,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207704 to 36272. [2023-12-21 14:10:42,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36272 states, 36271 states have (on average 1.3937856689917565) internal successors, (50554), 36271 states have internal predecessors, (50554), 0 states have call successors, (0), 0 states 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 14:10:42,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36272 states to 36272 states and 50554 transitions. [2023-12-21 14:10:42,562 INFO L78 Accepts]: Start accepts. Automaton has 36272 states and 50554 transitions. Word has length 147 [2023-12-21 14:10:42,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:10:42,562 INFO L495 AbstractCegarLoop]: Abstraction has 36272 states and 50554 transitions. [2023-12-21 14:10:42,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.307692307692308) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states 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 14:10:42,562 INFO L276 IsEmpty]: Start isEmpty. Operand 36272 states and 50554 transitions. [2023-12-21 14:10:42,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-21 14:10:42,698 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:10:42,698 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, 1, 1, 1, 1, 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 14:10:42,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-21 14:10:42,698 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:10:42,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:10:42,698 INFO L85 PathProgramCache]: Analyzing trace with hash 302729274, now seen corresponding path program 1 times [2023-12-21 14:10:42,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:10:42,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842879892] [2023-12-21 14:10:42,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:10:42,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:10:42,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:10:42,773 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 14:10:42,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:10:42,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842879892] [2023-12-21 14:10:42,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842879892] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:10:42,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:10:42,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:10:42,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821598739] [2023-12-21 14:10:42,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:10:42,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:10:42,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:10:42,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:10:42,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:10:42,774 INFO L87 Difference]: Start difference. First operand 36272 states and 50554 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 states 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 14:10:42,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:10:42,880 INFO L93 Difference]: Finished difference Result 52326 states and 72906 transitions. [2023-12-21 14:10:42,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:10:42,880 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 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 147 [2023-12-21 14:10:42,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:10:42,901 INFO L225 Difference]: With dead ends: 52326 [2023-12-21 14:10:42,902 INFO L226 Difference]: Without dead ends: 18912 [2023-12-21 14:10:42,921 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 14:10:42,921 INFO L413 NwaCegarLoop]: 291 mSDtfsCounter, 103 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:10:42,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 458 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:10:42,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18912 states. [2023-12-21 14:10:43,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18912 to 18910. [2023-12-21 14:10:43,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18910 states, 18909 states have (on average 1.3801893278333068) internal successors, (26098), 18909 states have internal predecessors, (26098), 0 states have call successors, (0), 0 states 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 14:10:43,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18910 states to 18910 states and 26098 transitions. [2023-12-21 14:10:43,107 INFO L78 Accepts]: Start accepts. Automaton has 18910 states and 26098 transitions. Word has length 147 [2023-12-21 14:10:43,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:10:43,107 INFO L495 AbstractCegarLoop]: Abstraction has 18910 states and 26098 transitions. [2023-12-21 14:10:43,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 states 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 14:10:43,107 INFO L276 IsEmpty]: Start isEmpty. Operand 18910 states and 26098 transitions. [2023-12-21 14:10:43,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-21 14:10:43,115 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:10:43,115 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, 1, 1, 1, 1, 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 14:10:43,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-21 14:10:43,115 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:10:43,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:10:43,115 INFO L85 PathProgramCache]: Analyzing trace with hash -362592366, now seen corresponding path program 1 times [2023-12-21 14:10:43,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:10:43,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025963244] [2023-12-21 14:10:43,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:10:43,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:10:43,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:10:43,554 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 14:10:43,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:10:43,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025963244] [2023-12-21 14:10:43,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025963244] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:10:43,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:10:43,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-21 14:10:43,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903013709] [2023-12-21 14:10:43,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:10:43,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-21 14:10:43,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:10:43,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-21 14:10:43,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-12-21 14:10:43,555 INFO L87 Difference]: Start difference. First operand 18910 states and 26098 transitions. Second operand has 13 states, 13 states have (on average 11.307692307692308) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states 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 14:10:44,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:10:44,804 INFO L93 Difference]: Finished difference Result 93499 states and 128657 transitions. [2023-12-21 14:10:44,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-21 14:10:44,805 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 11.307692307692308) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 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 147 [2023-12-21 14:10:44,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:10:44,969 INFO L225 Difference]: With dead ends: 93499 [2023-12-21 14:10:44,969 INFO L226 Difference]: Without dead ends: 75739 [2023-12-21 14:10:44,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=318, Invalid=1164, Unknown=0, NotChecked=0, Total=1482 [2023-12-21 14:10:44,982 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 2062 mSDsluCounter, 1682 mSDsCounter, 0 mSdLazyCounter, 1612 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2062 SdHoareTripleChecker+Valid, 1935 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 14:10:44,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2062 Valid, 1935 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1612 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 14:10:45,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75739 states. [2023-12-21 14:10:45,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75739 to 19257. [2023-12-21 14:10:45,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19257 states, 19256 states have (on average 1.3758309098462818) internal successors, (26493), 19256 states have internal predecessors, (26493), 0 states have call successors, (0), 0 states 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 14:10:45,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19257 states to 19257 states and 26493 transitions. [2023-12-21 14:10:45,338 INFO L78 Accepts]: Start accepts. Automaton has 19257 states and 26493 transitions. Word has length 147 [2023-12-21 14:10:45,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:10:45,338 INFO L495 AbstractCegarLoop]: Abstraction has 19257 states and 26493 transitions. [2023-12-21 14:10:45,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.307692307692308) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states 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 14:10:45,338 INFO L276 IsEmpty]: Start isEmpty. Operand 19257 states and 26493 transitions. [2023-12-21 14:10:45,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-21 14:10:45,346 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:10:45,346 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, 1, 1, 1, 1, 1, 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 14:10:45,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-12-21 14:10:45,346 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:10:45,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:10:45,346 INFO L85 PathProgramCache]: Analyzing trace with hash -742808589, now seen corresponding path program 1 times [2023-12-21 14:10:45,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:10:45,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649244717] [2023-12-21 14:10:45,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:10:45,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:10:45,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:10:45,376 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 14:10:45,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:10:45,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649244717] [2023-12-21 14:10:45,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649244717] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:10:45,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:10:45,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:10:45,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047066563] [2023-12-21 14:10:45,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:10:45,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:10:45,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:10:45,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:10:45,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:10:45,377 INFO L87 Difference]: Start difference. First operand 19257 states and 26493 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states 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 14:10:45,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:10:45,603 INFO L93 Difference]: Finished difference Result 37653 states and 52004 transitions. [2023-12-21 14:10:45,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:10:45,604 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 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 148 [2023-12-21 14:10:45,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:10:45,620 INFO L225 Difference]: With dead ends: 37653 [2023-12-21 14:10:45,620 INFO L226 Difference]: Without dead ends: 18789 [2023-12-21 14:10:45,629 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 14:10:45,629 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 161 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:10:45,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 306 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:10:45,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18789 states. [2023-12-21 14:10:45,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18789 to 18789. [2023-12-21 14:10:45,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18789 states, 18788 states have (on average 1.3749201618054077) internal successors, (25832), 18788 states have internal predecessors, (25832), 0 states have call successors, (0), 0 states 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 14:10:45,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18789 states to 18789 states and 25832 transitions. [2023-12-21 14:10:45,785 INFO L78 Accepts]: Start accepts. Automaton has 18789 states and 25832 transitions. Word has length 148 [2023-12-21 14:10:45,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:10:45,785 INFO L495 AbstractCegarLoop]: Abstraction has 18789 states and 25832 transitions. [2023-12-21 14:10:45,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states 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 14:10:45,785 INFO L276 IsEmpty]: Start isEmpty. Operand 18789 states and 25832 transitions. [2023-12-21 14:10:45,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-21 14:10:45,792 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:10:45,792 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, 1, 1, 1, 1, 1, 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 14:10:45,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-12-21 14:10:45,793 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:10:45,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:10:45,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1062244421, now seen corresponding path program 1 times [2023-12-21 14:10:45,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:10:45,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295702863] [2023-12-21 14:10:45,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:10:45,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:10:45,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:10:46,232 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 14:10:46,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:10:46,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295702863] [2023-12-21 14:10:46,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295702863] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:10:46,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:10:46,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-21 14:10:46,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503239781] [2023-12-21 14:10:46,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:10:46,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-21 14:10:46,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:10:46,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-21 14:10:46,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-12-21 14:10:46,234 INFO L87 Difference]: Start difference. First operand 18789 states and 25832 transitions. Second operand has 13 states, 13 states have (on average 11.384615384615385) internal successors, (148), 12 states have internal predecessors, (148), 0 states have call successors, (0), 0 states 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 14:10:48,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:10:48,033 INFO L93 Difference]: Finished difference Result 144718 states and 198487 transitions. [2023-12-21 14:10:48,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-12-21 14:10:48,034 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 11.384615384615385) internal successors, (148), 12 states have internal predecessors, (148), 0 states have call successors, (0), 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 148 [2023-12-21 14:10:48,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:10:48,157 INFO L225 Difference]: With dead ends: 144718 [2023-12-21 14:10:48,157 INFO L226 Difference]: Without dead ends: 126946 [2023-12-21 14:10:48,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 551 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=397, Invalid=1673, Unknown=0, NotChecked=0, Total=2070 [2023-12-21 14:10:48,170 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 2948 mSDsluCounter, 2133 mSDsCounter, 0 mSdLazyCounter, 2012 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2948 SdHoareTripleChecker+Valid, 2385 SdHoareTripleChecker+Invalid, 2039 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 2012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-21 14:10:48,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2948 Valid, 2385 Invalid, 2039 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 2012 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-21 14:10:48,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126946 states. [2023-12-21 14:10:48,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126946 to 18578. [2023-12-21 14:10:48,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18578 states, 18577 states have (on average 1.3733649136028423) internal successors, (25513), 18577 states have internal predecessors, (25513), 0 states have call successors, (0), 0 states 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 14:10:48,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18578 states to 18578 states and 25513 transitions. [2023-12-21 14:10:48,782 INFO L78 Accepts]: Start accepts. Automaton has 18578 states and 25513 transitions. Word has length 148 [2023-12-21 14:10:48,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:10:48,782 INFO L495 AbstractCegarLoop]: Abstraction has 18578 states and 25513 transitions. [2023-12-21 14:10:48,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.384615384615385) internal successors, (148), 12 states have internal predecessors, (148), 0 states have call successors, (0), 0 states 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 14:10:48,782 INFO L276 IsEmpty]: Start isEmpty. Operand 18578 states and 25513 transitions. [2023-12-21 14:10:48,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-21 14:10:48,789 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:10:48,789 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, 1, 1, 1, 1, 1, 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 14:10:48,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-12-21 14:10:48,789 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:10:48,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:10:48,790 INFO L85 PathProgramCache]: Analyzing trace with hash 696474373, now seen corresponding path program 1 times [2023-12-21 14:10:48,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:10:48,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893676074] [2023-12-21 14:10:48,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:10:48,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:10:48,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:10:48,851 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 14:10:48,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:10:48,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893676074] [2023-12-21 14:10:48,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893676074] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:10:48,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:10:48,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:10:48,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400299694] [2023-12-21 14:10:48,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:10:48,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:10:48,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:10:48,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:10:48,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:10:48,853 INFO L87 Difference]: Start difference. First operand 18578 states and 25513 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states 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 14:10:48,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:10:48,910 INFO L93 Difference]: Finished difference Result 26547 states and 36480 transitions. [2023-12-21 14:10:48,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:10:48,911 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 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 148 [2023-12-21 14:10:48,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:10:48,920 INFO L225 Difference]: With dead ends: 26547 [2023-12-21 14:10:48,920 INFO L226 Difference]: Without dead ends: 9761 [2023-12-21 14:10:48,929 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 14:10:48,929 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 85 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:10:48,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 424 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:10:48,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9761 states. [2023-12-21 14:10:48,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9761 to 9759. [2023-12-21 14:10:49,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9759 states, 9758 states have (on average 1.3552982168477148) internal successors, (13225), 9758 states have internal predecessors, (13225), 0 states have call successors, (0), 0 states 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 14:10:49,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9759 states to 9759 states and 13225 transitions. [2023-12-21 14:10:49,010 INFO L78 Accepts]: Start accepts. Automaton has 9759 states and 13225 transitions. Word has length 148 [2023-12-21 14:10:49,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:10:49,010 INFO L495 AbstractCegarLoop]: Abstraction has 9759 states and 13225 transitions. [2023-12-21 14:10:49,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states 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 14:10:49,010 INFO L276 IsEmpty]: Start isEmpty. Operand 9759 states and 13225 transitions. [2023-12-21 14:10:49,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-21 14:10:49,014 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:10:49,014 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, 1, 1, 1, 1, 1, 1, 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 14:10:49,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-12-21 14:10:49,014 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:10:49,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:10:49,014 INFO L85 PathProgramCache]: Analyzing trace with hash 753819433, now seen corresponding path program 1 times [2023-12-21 14:10:49,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:10:49,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051878462] [2023-12-21 14:10:49,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:10:49,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:10:49,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:10:49,220 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 14:10:49,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:10:49,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051878462] [2023-12-21 14:10:49,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051878462] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:10:49,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:10:49,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 14:10:49,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139626916] [2023-12-21 14:10:49,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:10:49,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 14:10:49,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:10:49,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 14:10:49,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-21 14:10:49,221 INFO L87 Difference]: Start difference. First operand 9759 states and 13225 transitions. Second operand has 9 states, 9 states have (on average 16.555555555555557) internal successors, (149), 8 states have internal predecessors, (149), 0 states have call successors, (0), 0 states 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 14:10:49,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:10:49,904 INFO L93 Difference]: Finished difference Result 61646 states and 83793 transitions. [2023-12-21 14:10:49,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-21 14:10:49,904 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 16.555555555555557) internal successors, (149), 8 states have internal predecessors, (149), 0 states have call successors, (0), 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 149 [2023-12-21 14:10:49,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:10:49,960 INFO L225 Difference]: With dead ends: 61646 [2023-12-21 14:10:49,960 INFO L226 Difference]: Without dead ends: 53074 [2023-12-21 14:10:49,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=170, Invalid=480, Unknown=0, NotChecked=0, Total=650 [2023-12-21 14:10:49,979 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 2706 mSDsluCounter, 746 mSDsCounter, 0 mSdLazyCounter, 678 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2706 SdHoareTripleChecker+Valid, 898 SdHoareTripleChecker+Invalid, 686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 14:10:49,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2706 Valid, 898 Invalid, 686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 678 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 14:10:50,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53074 states. [2023-12-21 14:10:50,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53074 to 9855. [2023-12-21 14:10:50,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9855 states, 9854 states have (on average 1.351836817536026) internal successors, (13321), 9854 states have internal predecessors, (13321), 0 states have call successors, (0), 0 states 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 14:10:50,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9855 states to 9855 states and 13321 transitions. [2023-12-21 14:10:50,239 INFO L78 Accepts]: Start accepts. Automaton has 9855 states and 13321 transitions. Word has length 149 [2023-12-21 14:10:50,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:10:50,239 INFO L495 AbstractCegarLoop]: Abstraction has 9855 states and 13321 transitions. [2023-12-21 14:10:50,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.555555555555557) internal successors, (149), 8 states have internal predecessors, (149), 0 states have call successors, (0), 0 states 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 14:10:50,240 INFO L276 IsEmpty]: Start isEmpty. Operand 9855 states and 13321 transitions. [2023-12-21 14:10:50,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-21 14:10:50,243 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:10:50,243 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, 1, 1, 1, 1, 1, 1, 1, 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 14:10:50,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-12-21 14:10:50,244 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:10:50,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:10:50,244 INFO L85 PathProgramCache]: Analyzing trace with hash -2002736115, now seen corresponding path program 1 times [2023-12-21 14:10:50,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:10:50,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244970722] [2023-12-21 14:10:50,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:10:50,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:10:50,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:10:50,726 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 14:10:50,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:10:50,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244970722] [2023-12-21 14:10:50,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244970722] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:10:50,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:10:50,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-21 14:10:50,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124438174] [2023-12-21 14:10:50,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:10:50,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 14:10:50,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:10:50,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 14:10:50,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-12-21 14:10:50,727 INFO L87 Difference]: Start difference. First operand 9855 states and 13321 transitions. Second operand has 12 states, 12 states have (on average 12.5) internal successors, (150), 11 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 14:10:52,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:10:52,060 INFO L93 Difference]: Finished difference Result 50162 states and 67230 transitions. [2023-12-21 14:10:52,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-21 14:10:52,060 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 12.5) internal successors, (150), 11 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 14:10:52,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:10:52,100 INFO L225 Difference]: With dead ends: 50162 [2023-12-21 14:10:52,100 INFO L226 Difference]: Without dead ends: 41951 [2023-12-21 14:10:52,115 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=336, Invalid=1070, Unknown=0, NotChecked=0, Total=1406 [2023-12-21 14:10:52,116 INFO L413 NwaCegarLoop]: 338 mSDtfsCounter, 3076 mSDsluCounter, 1239 mSDsCounter, 0 mSdLazyCounter, 1109 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3076 SdHoareTripleChecker+Valid, 1577 SdHoareTripleChecker+Invalid, 1158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 14:10:52,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3076 Valid, 1577 Invalid, 1158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1109 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 14:10:52,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41951 states. [2023-12-21 14:10:52,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41951 to 11175. [2023-12-21 14:10:52,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11175 states, 11174 states have (on average 1.338732772507607) internal successors, (14959), 11174 states have internal predecessors, (14959), 0 states have call successors, (0), 0 states 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 14:10:52,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11175 states to 11175 states and 14959 transitions. [2023-12-21 14:10:52,382 INFO L78 Accepts]: Start accepts. Automaton has 11175 states and 14959 transitions. Word has length 150 [2023-12-21 14:10:52,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:10:52,382 INFO L495 AbstractCegarLoop]: Abstraction has 11175 states and 14959 transitions. [2023-12-21 14:10:52,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.5) internal successors, (150), 11 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 14:10:52,383 INFO L276 IsEmpty]: Start isEmpty. Operand 11175 states and 14959 transitions. [2023-12-21 14:10:52,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-21 14:10:52,387 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:10:52,387 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, 1, 1, 1, 1, 1, 1, 1, 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 14:10:52,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-12-21 14:10:52,387 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:10:52,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:10:52,387 INFO L85 PathProgramCache]: Analyzing trace with hash -2133821331, now seen corresponding path program 1 times [2023-12-21 14:10:52,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:10:52,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108132563] [2023-12-21 14:10:52,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:10:52,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:10:52,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:10:52,616 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 14:10:52,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:10:52,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108132563] [2023-12-21 14:10:52,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108132563] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:10:52,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:10:52,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 14:10:52,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092743242] [2023-12-21 14:10:52,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:10:52,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 14:10:52,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:10:52,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 14:10:52,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-21 14:10:52,618 INFO L87 Difference]: Start difference. First operand 11175 states and 14959 transitions. Second operand has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 8 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 14:10:53,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:10:53,481 INFO L93 Difference]: Finished difference Result 61617 states and 83719 transitions. [2023-12-21 14:10:53,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-21 14:10:53,481 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 8 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 14:10:53,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:10:53,539 INFO L225 Difference]: With dead ends: 61617 [2023-12-21 14:10:53,539 INFO L226 Difference]: Without dead ends: 53354 [2023-12-21 14:10:53,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=143, Invalid=457, Unknown=0, NotChecked=0, Total=600 [2023-12-21 14:10:53,558 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 1805 mSDsluCounter, 1259 mSDsCounter, 0 mSdLazyCounter, 1086 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1805 SdHoareTripleChecker+Valid, 1490 SdHoareTripleChecker+Invalid, 1092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1086 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 14:10:53,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1805 Valid, 1490 Invalid, 1092 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1086 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 14:10:53,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53354 states. [2023-12-21 14:10:53,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53354 to 11211. [2023-12-21 14:10:53,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11211 states, 11210 states have (on average 1.33942908117752) internal successors, (15015), 11210 states have internal predecessors, (15015), 0 states have call successors, (0), 0 states 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 14:10:53,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11211 states to 11211 states and 15015 transitions. [2023-12-21 14:10:53,820 INFO L78 Accepts]: Start accepts. Automaton has 11211 states and 15015 transitions. Word has length 150 [2023-12-21 14:10:53,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:10:53,820 INFO L495 AbstractCegarLoop]: Abstraction has 11211 states and 15015 transitions. [2023-12-21 14:10:53,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 8 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 14:10:53,820 INFO L276 IsEmpty]: Start isEmpty. Operand 11211 states and 15015 transitions. [2023-12-21 14:10:53,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-21 14:10:53,825 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:10:53,825 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:10:53,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-12-21 14:10:53,826 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:10:53,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:10:53,826 INFO L85 PathProgramCache]: Analyzing trace with hash 173038150, now seen corresponding path program 1 times [2023-12-21 14:10:53,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:10:53,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417904994] [2023-12-21 14:10:53,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:10:53,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:10:53,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:10:53,972 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 14:10:53,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:10:53,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417904994] [2023-12-21 14:10:53,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417904994] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:10:53,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:10:53,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 14:10:53,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504826711] [2023-12-21 14:10:53,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:10:53,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 14:10:53,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:10:53,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 14:10:53,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 14:10:53,975 INFO L87 Difference]: Start difference. First operand 11211 states and 15015 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 14:10:54,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:10:54,186 INFO L93 Difference]: Finished difference Result 19282 states and 25995 transitions. [2023-12-21 14:10:54,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 14:10:54,186 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 14:10:54,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:10:54,197 INFO L225 Difference]: With dead ends: 19282 [2023-12-21 14:10:54,197 INFO L226 Difference]: Without dead ends: 11183 [2023-12-21 14:10:54,201 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 14:10:54,202 INFO L413 NwaCegarLoop]: 263 mSDtfsCounter, 1 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 782 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:10:54,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 782 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:10:54,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11183 states. [2023-12-21 14:10:54,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11183 to 11183. [2023-12-21 14:10:54,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11183 states, 11182 states have (on average 1.3331246646395993) internal successors, (14907), 11182 states have internal predecessors, (14907), 0 states have call successors, (0), 0 states 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 14:10:54,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11183 states to 11183 states and 14907 transitions. [2023-12-21 14:10:54,297 INFO L78 Accepts]: Start accepts. Automaton has 11183 states and 14907 transitions. Word has length 151 [2023-12-21 14:10:54,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:10:54,298 INFO L495 AbstractCegarLoop]: Abstraction has 11183 states and 14907 transitions. [2023-12-21 14:10:54,298 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 14:10:54,298 INFO L276 IsEmpty]: Start isEmpty. Operand 11183 states and 14907 transitions. [2023-12-21 14:10:54,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-12-21 14:10:54,303 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:10:54,303 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:10:54,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-12-21 14:10:54,304 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:10:54,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:10:54,304 INFO L85 PathProgramCache]: Analyzing trace with hash -725938704, now seen corresponding path program 1 times [2023-12-21 14:10:54,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:10:54,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481457094] [2023-12-21 14:10:54,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:10:54,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:10:54,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:10:54,436 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 14:10:54,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:10:54,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481457094] [2023-12-21 14:10:54,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481457094] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:10:54,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:10:54,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 14:10:54,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747212890] [2023-12-21 14:10:54,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:10:54,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 14:10:54,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:10:54,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 14:10:54,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-21 14:10:54,438 INFO L87 Difference]: Start difference. First operand 11183 states and 14907 transitions. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states 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 14:10:54,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:10:54,592 INFO L93 Difference]: Finished difference Result 17356 states and 23332 transitions. [2023-12-21 14:10:54,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 14:10:54,592 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 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 153 [2023-12-21 14:10:54,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:10:54,608 INFO L225 Difference]: With dead ends: 17356 [2023-12-21 14:10:54,608 INFO L226 Difference]: Without dead ends: 16248 [2023-12-21 14:10:54,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2023-12-21 14:10:54,615 INFO L413 NwaCegarLoop]: 524 mSDtfsCounter, 1848 mSDsluCounter, 1019 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1848 SdHoareTripleChecker+Valid, 1543 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:10:54,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1848 Valid, 1543 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:10:54,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16248 states. [2023-12-21 14:10:54,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16248 to 16222. [2023-12-21 14:10:54,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16222 states, 16221 states have (on average 1.3420874175451576) internal successors, (21770), 16221 states have internal predecessors, (21770), 0 states have call successors, (0), 0 states 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 14:10:54,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16222 states to 16222 states and 21770 transitions. [2023-12-21 14:10:54,757 INFO L78 Accepts]: Start accepts. Automaton has 16222 states and 21770 transitions. Word has length 153 [2023-12-21 14:10:54,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:10:54,757 INFO L495 AbstractCegarLoop]: Abstraction has 16222 states and 21770 transitions. [2023-12-21 14:10:54,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states 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 14:10:54,757 INFO L276 IsEmpty]: Start isEmpty. Operand 16222 states and 21770 transitions. [2023-12-21 14:10:54,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-12-21 14:10:54,764 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:10:54,764 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:10:54,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-12-21 14:10:54,764 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:10:54,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:10:54,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1760336496, now seen corresponding path program 1 times [2023-12-21 14:10:54,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:10:54,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214548165] [2023-12-21 14:10:54,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:10:54,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:10:54,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:10:54,887 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 14:10:54,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:10:54,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214548165] [2023-12-21 14:10:54,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214548165] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:10:54,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:10:54,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 14:10:54,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661470869] [2023-12-21 14:10:54,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:10:54,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 14:10:54,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:10:54,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 14:10:54,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-21 14:10:54,888 INFO L87 Difference]: Start difference. First operand 16222 states and 21770 transitions. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states 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 14:10:55,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:10:55,083 INFO L93 Difference]: Finished difference Result 38852 states and 52776 transitions. [2023-12-21 14:10:55,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 14:10:55,083 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 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 153 [2023-12-21 14:10:55,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:10:55,119 INFO L225 Difference]: With dead ends: 38852 [2023-12-21 14:10:55,119 INFO L226 Difference]: Without dead ends: 32989 [2023-12-21 14:10:55,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2023-12-21 14:10:55,131 INFO L413 NwaCegarLoop]: 451 mSDtfsCounter, 1874 mSDsluCounter, 1101 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1874 SdHoareTripleChecker+Valid, 1552 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:10:55,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1874 Valid, 1552 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:10:55,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32989 states. [2023-12-21 14:10:55,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32989 to 32979. [2023-12-21 14:10:55,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32979 states, 32978 states have (on average 1.3553581175329008) internal successors, (44697), 32978 states have internal predecessors, (44697), 0 states have call successors, (0), 0 states 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 14:10:55,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32979 states to 32979 states and 44697 transitions. [2023-12-21 14:10:55,522 INFO L78 Accepts]: Start accepts. Automaton has 32979 states and 44697 transitions. Word has length 153 [2023-12-21 14:10:55,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:10:55,522 INFO L495 AbstractCegarLoop]: Abstraction has 32979 states and 44697 transitions. [2023-12-21 14:10:55,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states 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 14:10:55,522 INFO L276 IsEmpty]: Start isEmpty. Operand 32979 states and 44697 transitions. [2023-12-21 14:10:55,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-12-21 14:10:55,530 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:10:55,530 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:10:55,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-12-21 14:10:55,530 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:10:55,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:10:55,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1693153139, now seen corresponding path program 1 times [2023-12-21 14:10:55,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:10:55,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283767578] [2023-12-21 14:10:55,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:10:55,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:10:55,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:10:55,658 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 14:10:55,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:10:55,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283767578] [2023-12-21 14:10:55,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283767578] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:10:55,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:10:55,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 14:10:55,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352251209] [2023-12-21 14:10:55,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:10:55,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 14:10:55,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:10:55,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 14:10:55,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-21 14:10:55,660 INFO L87 Difference]: Start difference. First operand 32979 states and 44697 transitions. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states 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 14:10:55,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:10:55,900 INFO L93 Difference]: Finished difference Result 59448 states and 80874 transitions. [2023-12-21 14:10:55,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 14:10:55,901 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 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 153 [2023-12-21 14:10:55,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:10:55,946 INFO L225 Difference]: With dead ends: 59448 [2023-12-21 14:10:55,946 INFO L226 Difference]: Without dead ends: 37312 [2023-12-21 14:10:55,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2023-12-21 14:10:55,970 INFO L413 NwaCegarLoop]: 551 mSDtfsCounter, 1657 mSDsluCounter, 1136 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1657 SdHoareTripleChecker+Valid, 1687 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:10:55,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1657 Valid, 1687 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:10:55,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37312 states. [2023-12-21 14:10:56,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37312 to 32955. [2023-12-21 14:10:56,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32955 states, 32954 states have (on average 1.355434848576804) internal successors, (44667), 32954 states have internal predecessors, (44667), 0 states have call successors, (0), 0 states 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 14:10:56,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32955 states to 32955 states and 44667 transitions. [2023-12-21 14:10:56,301 INFO L78 Accepts]: Start accepts. Automaton has 32955 states and 44667 transitions. Word has length 153 [2023-12-21 14:10:56,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:10:56,302 INFO L495 AbstractCegarLoop]: Abstraction has 32955 states and 44667 transitions. [2023-12-21 14:10:56,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states 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 14:10:56,302 INFO L276 IsEmpty]: Start isEmpty. Operand 32955 states and 44667 transitions. [2023-12-21 14:10:56,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-12-21 14:10:56,310 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:10:56,310 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:10:56,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-12-21 14:10:56,310 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:10:56,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:10:56,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1282867987, now seen corresponding path program 1 times [2023-12-21 14:10:56,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:10:56,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395908073] [2023-12-21 14:10:56,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:10:56,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:10:56,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:10:56,430 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 14:10:56,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:10:56,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395908073] [2023-12-21 14:10:56,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395908073] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:10:56,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:10:56,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 14:10:56,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348118452] [2023-12-21 14:10:56,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:10:56,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 14:10:56,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:10:56,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 14:10:56,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-21 14:10:56,432 INFO L87 Difference]: Start difference. First operand 32955 states and 44667 transitions. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states 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 14:10:56,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:10:56,822 INFO L93 Difference]: Finished difference Result 69542 states and 94846 transitions. [2023-12-21 14:10:56,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 14:10:56,823 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 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 153 [2023-12-21 14:10:56,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:10:56,870 INFO L225 Difference]: With dead ends: 69542 [2023-12-21 14:10:56,871 INFO L226 Difference]: Without dead ends: 47362 [2023-12-21 14:10:56,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2023-12-21 14:10:56,892 INFO L413 NwaCegarLoop]: 568 mSDtfsCounter, 1653 mSDsluCounter, 914 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1653 SdHoareTripleChecker+Valid, 1482 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:10:56,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1653 Valid, 1482 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:10:56,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47362 states. [2023-12-21 14:10:57,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47362 to 47336. [2023-12-21 14:10:57,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47336 states, 47335 states have (on average 1.3595014260061264) internal successors, (64352), 47335 states have internal predecessors, (64352), 0 states have call successors, (0), 0 states 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 14:10:57,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47336 states to 47336 states and 64352 transitions. [2023-12-21 14:10:57,490 INFO L78 Accepts]: Start accepts. Automaton has 47336 states and 64352 transitions. Word has length 153 [2023-12-21 14:10:57,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:10:57,490 INFO L495 AbstractCegarLoop]: Abstraction has 47336 states and 64352 transitions. [2023-12-21 14:10:57,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states 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 14:10:57,490 INFO L276 IsEmpty]: Start isEmpty. Operand 47336 states and 64352 transitions. [2023-12-21 14:10:57,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-12-21 14:10:57,500 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:10:57,500 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:10:57,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-12-21 14:10:57,500 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:10:57,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:10:57,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1149770253, now seen corresponding path program 1 times [2023-12-21 14:10:57,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:10:57,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051733690] [2023-12-21 14:10:57,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:10:57,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:10:57,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:10:57,620 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 14:10:57,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:10:57,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051733690] [2023-12-21 14:10:57,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051733690] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:10:57,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:10:57,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 14:10:57,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113808785] [2023-12-21 14:10:57,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:10:57,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 14:10:57,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:10:57,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 14:10:57,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-21 14:10:57,623 INFO L87 Difference]: Start difference. First operand 47336 states and 64352 transitions. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states 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 14:10:58,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:10:58,001 INFO L93 Difference]: Finished difference Result 131623 states and 180044 transitions. [2023-12-21 14:10:58,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 14:10:58,005 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 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 153 [2023-12-21 14:10:58,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:10:58,114 INFO L225 Difference]: With dead ends: 131623 [2023-12-21 14:10:58,114 INFO L226 Difference]: Without dead ends: 95182 [2023-12-21 14:10:58,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2023-12-21 14:10:58,158 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 1886 mSDsluCounter, 908 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1886 SdHoareTripleChecker+Valid, 1351 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:10:58,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1886 Valid, 1351 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:10:58,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95182 states. [2023-12-21 14:10:59,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95182 to 95172. [2023-12-21 14:10:59,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95172 states, 95171 states have (on average 1.3660568870769456) internal successors, (130009), 95171 states have internal predecessors, (130009), 0 states have call successors, (0), 0 states 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 14:10:59,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95172 states to 95172 states and 130009 transitions. [2023-12-21 14:10:59,379 INFO L78 Accepts]: Start accepts. Automaton has 95172 states and 130009 transitions. Word has length 153 [2023-12-21 14:10:59,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:10:59,379 INFO L495 AbstractCegarLoop]: Abstraction has 95172 states and 130009 transitions. [2023-12-21 14:10:59,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states 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 14:10:59,379 INFO L276 IsEmpty]: Start isEmpty. Operand 95172 states and 130009 transitions. [2023-12-21 14:10:59,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-12-21 14:10:59,391 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:10:59,391 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:10:59,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2023-12-21 14:10:59,391 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:10:59,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:10:59,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1991247914, now seen corresponding path program 1 times [2023-12-21 14:10:59,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:10:59,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978769691] [2023-12-21 14:10:59,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:10:59,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:10:59,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:10:59,746 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 14:10:59,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:10:59,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978769691] [2023-12-21 14:10:59,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978769691] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:10:59,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:10:59,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 14:10:59,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102107098] [2023-12-21 14:10:59,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:10:59,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 14:10:59,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:10:59,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 14:10:59,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-21 14:10:59,748 INFO L87 Difference]: Start difference. First operand 95172 states and 130009 transitions. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states 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 14:11:00,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:11:00,212 INFO L93 Difference]: Finished difference Result 183819 states and 251544 transitions. [2023-12-21 14:11:00,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 14:11:00,212 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 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 153 [2023-12-21 14:11:00,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:11:00,334 INFO L225 Difference]: With dead ends: 183819 [2023-12-21 14:11:00,336 INFO L226 Difference]: Without dead ends: 99964 [2023-12-21 14:11:00,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2023-12-21 14:11:00,395 INFO L413 NwaCegarLoop]: 543 mSDtfsCounter, 1668 mSDsluCounter, 908 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1668 SdHoareTripleChecker+Valid, 1451 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:11:00,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1668 Valid, 1451 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:11:00,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99964 states. [2023-12-21 14:11:01,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99964 to 95124. [2023-12-21 14:11:01,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95124 states, 95123 states have (on average 1.3661154505219557) internal successors, (129949), 95123 states have internal predecessors, (129949), 0 states have call successors, (0), 0 states 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 14:11:01,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95124 states to 95124 states and 129949 transitions. [2023-12-21 14:11:01,858 INFO L78 Accepts]: Start accepts. Automaton has 95124 states and 129949 transitions. Word has length 153 [2023-12-21 14:11:01,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:11:01,858 INFO L495 AbstractCegarLoop]: Abstraction has 95124 states and 129949 transitions. [2023-12-21 14:11:01,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states 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 14:11:01,858 INFO L276 IsEmpty]: Start isEmpty. Operand 95124 states and 129949 transitions. [2023-12-21 14:11:01,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-12-21 14:11:01,886 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:11:01,887 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:11:01,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2023-12-21 14:11:01,887 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:11:01,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:11:01,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1893434230, now seen corresponding path program 1 times [2023-12-21 14:11:01,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:11:01,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551374220] [2023-12-21 14:11:01,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:11:01,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:11:01,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:11:02,032 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 14:11:02,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:11:02,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551374220] [2023-12-21 14:11:02,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551374220] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:11:02,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:11:02,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 14:11:02,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010866447] [2023-12-21 14:11:02,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:11:02,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 14:11:02,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:11:02,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 14:11:02,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-21 14:11:02,034 INFO L87 Difference]: Start difference. First operand 95124 states and 129949 transitions. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states 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 14:11:02,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:11:02,787 INFO L93 Difference]: Finished difference Result 213745 states and 292775 transitions. [2023-12-21 14:11:02,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 14:11:02,788 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 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 153 [2023-12-21 14:11:02,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:11:02,941 INFO L225 Difference]: With dead ends: 213745 [2023-12-21 14:11:02,941 INFO L226 Difference]: Without dead ends: 129802 [2023-12-21 14:11:02,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2023-12-21 14:11:02,984 INFO L413 NwaCegarLoop]: 505 mSDtfsCounter, 1818 mSDsluCounter, 923 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1818 SdHoareTripleChecker+Valid, 1428 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:11:02,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1818 Valid, 1428 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:11:03,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129802 states. [2023-12-21 14:11:04,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129802 to 129736. [2023-12-21 14:11:04,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129736 states, 129735 states have (on average 1.3674490307164604) internal successors, (177406), 129735 states have internal predecessors, (177406), 0 states have call successors, (0), 0 states 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 14:11:04,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129736 states to 129736 states and 177406 transitions. [2023-12-21 14:11:04,496 INFO L78 Accepts]: Start accepts. Automaton has 129736 states and 177406 transitions. Word has length 153 [2023-12-21 14:11:04,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:11:04,496 INFO L495 AbstractCegarLoop]: Abstraction has 129736 states and 177406 transitions. [2023-12-21 14:11:04,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states 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 14:11:04,497 INFO L276 IsEmpty]: Start isEmpty. Operand 129736 states and 177406 transitions. [2023-12-21 14:11:04,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-12-21 14:11:04,507 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:11:04,507 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:11:04,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2023-12-21 14:11:04,507 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:11:04,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:11:04,507 INFO L85 PathProgramCache]: Analyzing trace with hash 302158902, now seen corresponding path program 1 times [2023-12-21 14:11:04,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:11:04,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108168236] [2023-12-21 14:11:04,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:11:04,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:11:04,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:11:04,920 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 14:11:04,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:11:04,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108168236] [2023-12-21 14:11:04,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108168236] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:11:04,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:11:04,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 14:11:04,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367582757] [2023-12-21 14:11:04,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:11:04,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 14:11:04,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:11:04,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 14:11:04,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-21 14:11:04,921 INFO L87 Difference]: Start difference. First operand 129736 states and 177406 transitions. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states 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 14:11:05,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:11:05,831 INFO L93 Difference]: Finished difference Result 268680 states and 368054 transitions. [2023-12-21 14:11:05,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 14:11:05,832 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 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 153 [2023-12-21 14:11:05,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:11:06,017 INFO L225 Difference]: With dead ends: 268680 [2023-12-21 14:11:06,017 INFO L226 Difference]: Without dead ends: 150163 [2023-12-21 14:11:06,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2023-12-21 14:11:06,084 INFO L413 NwaCegarLoop]: 472 mSDtfsCounter, 1714 mSDsluCounter, 1182 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1714 SdHoareTripleChecker+Valid, 1654 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:11:06,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1714 Valid, 1654 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:11:06,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150163 states. [2023-12-21 14:11:07,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150163 to 150153. [2023-12-21 14:11:07,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150153 states, 150152 states have (on average 1.367460972880814) internal successors, (205327), 150152 states have internal predecessors, (205327), 0 states have call successors, (0), 0 states 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 14:11:08,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150153 states to 150153 states and 205327 transitions. [2023-12-21 14:11:08,040 INFO L78 Accepts]: Start accepts. Automaton has 150153 states and 205327 transitions. Word has length 153 [2023-12-21 14:11:08,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:11:08,040 INFO L495 AbstractCegarLoop]: Abstraction has 150153 states and 205327 transitions. [2023-12-21 14:11:08,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states 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 14:11:08,040 INFO L276 IsEmpty]: Start isEmpty. Operand 150153 states and 205327 transitions. [2023-12-21 14:11:08,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-12-21 14:11:08,050 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:11:08,050 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:11:08,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2023-12-21 14:11:08,050 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:11:08,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:11:08,051 INFO L85 PathProgramCache]: Analyzing trace with hash -461343441, now seen corresponding path program 1 times [2023-12-21 14:11:08,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:11:08,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444716391] [2023-12-21 14:11:08,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:11:08,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:11:08,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:11:08,087 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 14:11:08,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:11:08,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444716391] [2023-12-21 14:11:08,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444716391] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:11:08,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:11:08,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:11:08,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740747689] [2023-12-21 14:11:08,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:11:08,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:11:08,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:11:08,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:11:08,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:11:08,089 INFO L87 Difference]: Start difference. First operand 150153 states and 205327 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states 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 14:11:09,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:11:09,006 INFO L93 Difference]: Finished difference Result 365533 states and 490991 transitions. [2023-12-21 14:11:09,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:11:09,009 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 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 153 [2023-12-21 14:11:09,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:11:09,583 INFO L225 Difference]: With dead ends: 365533 [2023-12-21 14:11:09,583 INFO L226 Difference]: Without dead ends: 219632 [2023-12-21 14:11:09,609 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 14:11:09,609 INFO L413 NwaCegarLoop]: 303 mSDtfsCounter, 59 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:11:09,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 545 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:11:09,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219632 states. [2023-12-21 14:11:11,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219632 to 210666. [2023-12-21 14:11:11,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210666 states, 210665 states have (on average 1.3027603066479956) internal successors, (274446), 210665 states have internal predecessors, (274446), 0 states have call successors, (0), 0 states 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 14:11:12,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210666 states to 210666 states and 274446 transitions. [2023-12-21 14:11:12,155 INFO L78 Accepts]: Start accepts. Automaton has 210666 states and 274446 transitions. Word has length 153 [2023-12-21 14:11:12,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:11:12,155 INFO L495 AbstractCegarLoop]: Abstraction has 210666 states and 274446 transitions. [2023-12-21 14:11:12,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states 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 14:11:12,155 INFO L276 IsEmpty]: Start isEmpty. Operand 210666 states and 274446 transitions. [2023-12-21 14:11:12,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-21 14:11:12,165 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:11:12,165 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:11:12,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2023-12-21 14:11:12,165 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:11:12,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:11:12,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1509906153, now seen corresponding path program 1 times [2023-12-21 14:11:12,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:11:12,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206572782] [2023-12-21 14:11:12,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:11:12,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:11:12,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:11:12,286 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 14:11:12,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:11:12,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206572782] [2023-12-21 14:11:12,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206572782] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:11:12,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:11:12,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 14:11:12,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458415801] [2023-12-21 14:11:12,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:11:12,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 14:11:12,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:11:12,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 14:11:12,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-21 14:11:12,288 INFO L87 Difference]: Start difference. First operand 210666 states and 274446 transitions. Second operand has 8 states, 8 states have (on average 19.25) internal successors, (154), 8 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:11:13,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:11:13,929 INFO L93 Difference]: Finished difference Result 437431 states and 570558 transitions. [2023-12-21 14:11:13,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 14:11:13,930 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.25) internal successors, (154), 8 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 154 [2023-12-21 14:11:13,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:11:14,256 INFO L225 Difference]: With dead ends: 437431 [2023-12-21 14:11:14,257 INFO L226 Difference]: Without dead ends: 241153 [2023-12-21 14:11:14,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2023-12-21 14:11:14,347 INFO L413 NwaCegarLoop]: 437 mSDtfsCounter, 1768 mSDsluCounter, 957 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1768 SdHoareTripleChecker+Valid, 1394 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:11:14,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1768 Valid, 1394 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:11:14,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241153 states. [2023-12-21 14:11:16,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241153 to 236796. [2023-12-21 14:11:17,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236796 states, 236795 states have (on average 1.3030976160814207) internal successors, (308567), 236795 states have internal predecessors, (308567), 0 states have call successors, (0), 0 states 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 14:11:17,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236796 states to 236796 states and 308567 transitions. [2023-12-21 14:11:17,370 INFO L78 Accepts]: Start accepts. Automaton has 236796 states and 308567 transitions. Word has length 154 [2023-12-21 14:11:17,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:11:17,370 INFO L495 AbstractCegarLoop]: Abstraction has 236796 states and 308567 transitions. [2023-12-21 14:11:17,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.25) internal successors, (154), 8 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:11:17,370 INFO L276 IsEmpty]: Start isEmpty. Operand 236796 states and 308567 transitions. [2023-12-21 14:11:17,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-21 14:11:17,379 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:11:17,379 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:11:17,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2023-12-21 14:11:17,379 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:11:17,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:11:17,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1825909868, now seen corresponding path program 1 times [2023-12-21 14:11:17,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:11:17,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141783308] [2023-12-21 14:11:17,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:11:17,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:11:17,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:11:17,489 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 14:11:17,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:11:17,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141783308] [2023-12-21 14:11:17,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141783308] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:11:17,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:11:17,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 14:11:17,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298539600] [2023-12-21 14:11:17,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:11:17,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 14:11:17,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:11:17,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 14:11:17,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-21 14:11:17,491 INFO L87 Difference]: Start difference. First operand 236796 states and 308567 transitions. Second operand has 8 states, 8 states have (on average 19.25) internal successors, (154), 8 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:11:18,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:11:18,976 INFO L93 Difference]: Finished difference Result 462879 states and 603854 transitions. [2023-12-21 14:11:18,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 14:11:18,977 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.25) internal successors, (154), 8 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 154 [2023-12-21 14:11:18,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:11:19,249 INFO L225 Difference]: With dead ends: 462879 [2023-12-21 14:11:19,249 INFO L226 Difference]: Without dead ends: 240523 [2023-12-21 14:11:19,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2023-12-21 14:11:19,322 INFO L413 NwaCegarLoop]: 538 mSDtfsCounter, 1600 mSDsluCounter, 958 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1600 SdHoareTripleChecker+Valid, 1496 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:11:19,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1600 Valid, 1496 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:11:19,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240523 states. [2023-12-21 14:11:21,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240523 to 230556. [2023-12-21 14:11:21,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230556 states, 230555 states have (on average 1.3031120556917004) internal successors, (300439), 230555 states have internal predecessors, (300439), 0 states have call successors, (0), 0 states 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 14:11:22,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230556 states to 230556 states and 300439 transitions. [2023-12-21 14:11:22,211 INFO L78 Accepts]: Start accepts. Automaton has 230556 states and 300439 transitions. Word has length 154 [2023-12-21 14:11:22,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:11:22,211 INFO L495 AbstractCegarLoop]: Abstraction has 230556 states and 300439 transitions. [2023-12-21 14:11:22,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.25) internal successors, (154), 8 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:11:22,211 INFO L276 IsEmpty]: Start isEmpty. Operand 230556 states and 300439 transitions. [2023-12-21 14:11:22,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-21 14:11:22,221 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:11:22,221 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:11:22,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2023-12-21 14:11:22,221 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:11:22,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:11:22,221 INFO L85 PathProgramCache]: Analyzing trace with hash 409881681, now seen corresponding path program 1 times [2023-12-21 14:11:22,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:11:22,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676598444] [2023-12-21 14:11:22,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:11:22,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:11:22,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:11:22,625 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 14:11:22,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:11:22,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676598444] [2023-12-21 14:11:22,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676598444] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:11:22,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:11:22,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 14:11:22,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138956196] [2023-12-21 14:11:22,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:11:22,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 14:11:22,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:11:22,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 14:11:22,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-21 14:11:22,626 INFO L87 Difference]: Start difference. First operand 230556 states and 300439 transitions. Second operand has 8 states, 8 states have (on average 19.25) internal successors, (154), 8 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:11:23,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:11:23,914 INFO L93 Difference]: Finished difference Result 461628 states and 602081 transitions. [2023-12-21 14:11:23,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 14:11:23,914 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.25) internal successors, (154), 8 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 154 [2023-12-21 14:11:23,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:11:24,177 INFO L225 Difference]: With dead ends: 461628 [2023-12-21 14:11:24,177 INFO L226 Difference]: Without dead ends: 245490 [2023-12-21 14:11:24,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2023-12-21 14:11:24,261 INFO L413 NwaCegarLoop]: 597 mSDtfsCounter, 1510 mSDsluCounter, 1184 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1510 SdHoareTripleChecker+Valid, 1781 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:11:24,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1510 Valid, 1781 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:11:24,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245490 states. [2023-12-21 14:11:26,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245490 to 245472. [2023-12-21 14:11:26,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245472 states, 245471 states have (on average 1.3031885640258931) internal successors, (319895), 245471 states have internal predecessors, (319895), 0 states have call successors, (0), 0 states 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 14:11:27,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245472 states to 245472 states and 319895 transitions. [2023-12-21 14:11:27,520 INFO L78 Accepts]: Start accepts. Automaton has 245472 states and 319895 transitions. Word has length 154 [2023-12-21 14:11:27,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:11:27,520 INFO L495 AbstractCegarLoop]: Abstraction has 245472 states and 319895 transitions. [2023-12-21 14:11:27,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.25) internal successors, (154), 8 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:11:27,520 INFO L276 IsEmpty]: Start isEmpty. Operand 245472 states and 319895 transitions. [2023-12-21 14:11:27,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-21 14:11:27,530 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:11:27,530 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:11:27,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2023-12-21 14:11:27,531 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:11:27,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:11:27,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1020447924, now seen corresponding path program 1 times [2023-12-21 14:11:27,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:11:27,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026536910] [2023-12-21 14:11:27,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:11:27,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:11:27,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:11:27,680 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 14:11:27,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:11:27,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026536910] [2023-12-21 14:11:27,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026536910] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:11:27,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:11:27,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 14:11:27,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797169593] [2023-12-21 14:11:27,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:11:27,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 14:11:27,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:11:27,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 14:11:27,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-21 14:11:27,682 INFO L87 Difference]: Start difference. First operand 245472 states and 319895 transitions. Second operand has 8 states, 8 states have (on average 19.25) internal successors, (154), 8 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:11:29,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:11:29,042 INFO L93 Difference]: Finished difference Result 497586 states and 649001 transitions. [2023-12-21 14:11:29,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 14:11:29,043 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.25) internal successors, (154), 8 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 154 [2023-12-21 14:11:29,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:11:29,644 INFO L225 Difference]: With dead ends: 497586 [2023-12-21 14:11:29,644 INFO L226 Difference]: Without dead ends: 266528 [2023-12-21 14:11:29,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2023-12-21 14:11:29,686 INFO L413 NwaCegarLoop]: 535 mSDtfsCounter, 1677 mSDsluCounter, 1215 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1677 SdHoareTripleChecker+Valid, 1750 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:11:29,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1677 Valid, 1750 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:11:29,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266528 states. [2023-12-21 14:11:32,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266528 to 266502. [2023-12-21 14:11:32,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266502 states, 266501 states have (on average 1.3033009257000912) internal successors, (347331), 266501 states have internal predecessors, (347331), 0 states have call successors, (0), 0 states 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 14:11:33,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266502 states to 266502 states and 347331 transitions. [2023-12-21 14:11:33,244 INFO L78 Accepts]: Start accepts. Automaton has 266502 states and 347331 transitions. Word has length 154 [2023-12-21 14:11:33,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:11:33,244 INFO L495 AbstractCegarLoop]: Abstraction has 266502 states and 347331 transitions. [2023-12-21 14:11:33,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.25) internal successors, (154), 8 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:11:33,244 INFO L276 IsEmpty]: Start isEmpty. Operand 266502 states and 347331 transitions. [2023-12-21 14:11:33,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-21 14:11:33,254 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:11:33,254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:11:33,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2023-12-21 14:11:33,254 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:11:33,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:11:33,255 INFO L85 PathProgramCache]: Analyzing trace with hash -981112556, now seen corresponding path program 1 times [2023-12-21 14:11:33,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:11:33,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313875911] [2023-12-21 14:11:33,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:11:33,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:11:33,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:11:33,384 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 14:11:33,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:11:33,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313875911] [2023-12-21 14:11:33,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313875911] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:11:33,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:11:33,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 14:11:33,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154466849] [2023-12-21 14:11:33,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:11:33,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 14:11:33,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:11:33,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 14:11:33,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-21 14:11:33,385 INFO L87 Difference]: Start difference. First operand 266502 states and 347331 transitions. Second operand has 8 states, 8 states have (on average 19.25) internal successors, (154), 8 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:11:35,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:11:35,172 INFO L93 Difference]: Finished difference Result 543309 states and 708668 transitions. [2023-12-21 14:11:35,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 14:11:35,173 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.25) internal successors, (154), 8 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 154 [2023-12-21 14:11:35,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:11:35,512 INFO L225 Difference]: With dead ends: 543309 [2023-12-21 14:11:35,513 INFO L226 Difference]: Without dead ends: 291137 [2023-12-21 14:11:35,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2023-12-21 14:11:35,592 INFO L413 NwaCegarLoop]: 464 mSDtfsCounter, 1723 mSDsluCounter, 1321 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1723 SdHoareTripleChecker+Valid, 1785 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:11:35,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1723 Valid, 1785 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:11:35,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291137 states. [2023-12-21 14:11:38,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291137 to 291127. [2023-12-21 14:11:38,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291127 states, 291126 states have (on average 1.3034493655667994) internal successors, (379468), 291126 states have internal predecessors, (379468), 0 states have call successors, (0), 0 states 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 14:11:39,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291127 states to 291127 states and 379468 transitions. [2023-12-21 14:11:39,518 INFO L78 Accepts]: Start accepts. Automaton has 291127 states and 379468 transitions. Word has length 154 [2023-12-21 14:11:39,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:11:39,518 INFO L495 AbstractCegarLoop]: Abstraction has 291127 states and 379468 transitions. [2023-12-21 14:11:39,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.25) internal successors, (154), 8 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:11:39,518 INFO L276 IsEmpty]: Start isEmpty. Operand 291127 states and 379468 transitions. [2023-12-21 14:11:39,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-21 14:11:39,527 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:11:39,527 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:11:39,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2023-12-21 14:11:39,527 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:11:39,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:11:39,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1297116271, now seen corresponding path program 1 times [2023-12-21 14:11:39,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:11:39,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2922950] [2023-12-21 14:11:39,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:11:39,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:11:39,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:11:39,639 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 14:11:39,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:11:39,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2922950] [2023-12-21 14:11:39,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2922950] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:11:39,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:11:39,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 14:11:39,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310279362] [2023-12-21 14:11:39,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:11:39,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 14:11:39,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:11:39,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 14:11:39,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-21 14:11:39,640 INFO L87 Difference]: Start difference. First operand 291127 states and 379468 transitions. Second operand has 8 states, 8 states have (on average 19.25) internal successors, (154), 8 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:11:41,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:11:41,373 INFO L93 Difference]: Finished difference Result 572257 states and 746572 transitions. [2023-12-21 14:11:41,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 14:11:41,373 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.25) internal successors, (154), 8 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 154 [2023-12-21 14:11:41,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:11:41,759 INFO L225 Difference]: With dead ends: 572257 [2023-12-21 14:11:41,759 INFO L226 Difference]: Without dead ends: 295460 [2023-12-21 14:11:41,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2023-12-21 14:11:41,877 INFO L413 NwaCegarLoop]: 564 mSDtfsCounter, 1555 mSDsluCounter, 1129 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1555 SdHoareTripleChecker+Valid, 1693 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:11:41,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1555 Valid, 1693 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:11:42,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295460 states. [2023-12-21 14:11:44,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295460 to 291103. [2023-12-21 14:11:45,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291103 states, 291102 states have (on average 1.303460642661335) internal successors, (379440), 291102 states have internal predecessors, (379440), 0 states have call successors, (0), 0 states 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 14:11:45,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291103 states to 291103 states and 379440 transitions. [2023-12-21 14:11:45,802 INFO L78 Accepts]: Start accepts. Automaton has 291103 states and 379440 transitions. Word has length 154 [2023-12-21 14:11:45,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:11:45,802 INFO L495 AbstractCegarLoop]: Abstraction has 291103 states and 379440 transitions. [2023-12-21 14:11:45,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.25) internal successors, (154), 8 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:11:45,802 INFO L276 IsEmpty]: Start isEmpty. Operand 291103 states and 379440 transitions. [2023-12-21 14:11:45,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-21 14:11:45,811 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:11:45,811 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:11:45,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2023-12-21 14:11:45,811 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:11:45,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:11:45,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1131054095, now seen corresponding path program 1 times [2023-12-21 14:11:45,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:11:45,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073334690] [2023-12-21 14:11:45,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:11:45,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:11:45,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:11:45,936 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 14:11:45,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:11:45,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073334690] [2023-12-21 14:11:45,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073334690] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:11:45,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:11:45,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 14:11:45,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682088311] [2023-12-21 14:11:45,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:11:45,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 14:11:45,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:11:45,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 14:11:45,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-21 14:11:45,937 INFO L87 Difference]: Start difference. First operand 291103 states and 379440 transitions. Second operand has 8 states, 8 states have (on average 19.25) internal successors, (154), 8 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:11:47,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:11:47,655 INFO L93 Difference]: Finished difference Result 591973 states and 772232 transitions. [2023-12-21 14:11:47,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 14:11:47,656 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.25) internal successors, (154), 8 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 154 [2023-12-21 14:11:47,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:11:48,069 INFO L225 Difference]: With dead ends: 591973 [2023-12-21 14:11:48,069 INFO L226 Difference]: Without dead ends: 315132 [2023-12-21 14:11:48,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2023-12-21 14:11:48,185 INFO L413 NwaCegarLoop]: 583 mSDtfsCounter, 1550 mSDsluCounter, 1346 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1550 SdHoareTripleChecker+Valid, 1929 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:11:48,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1550 Valid, 1929 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:11:48,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315132 states. [2023-12-21 14:11:51,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315132 to 315106. [2023-12-21 14:11:51,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315106 states, 315105 states have (on average 1.303663858079053) internal successors, (410791), 315105 states have internal predecessors, (410791), 0 states have call successors, (0), 0 states 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 14:11:52,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315106 states to 315106 states and 410791 transitions. [2023-12-21 14:11:52,315 INFO L78 Accepts]: Start accepts. Automaton has 315106 states and 410791 transitions. Word has length 154 [2023-12-21 14:11:52,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:11:52,315 INFO L495 AbstractCegarLoop]: Abstraction has 315106 states and 410791 transitions. [2023-12-21 14:11:52,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.25) internal successors, (154), 8 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:11:52,315 INFO L276 IsEmpty]: Start isEmpty. Operand 315106 states and 410791 transitions. [2023-12-21 14:11:52,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-21 14:11:52,324 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:11:52,324 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:11:52,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2023-12-21 14:11:52,324 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:11:52,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:11:52,324 INFO L85 PathProgramCache]: Analyzing trace with hash -880118639, now seen corresponding path program 1 times [2023-12-21 14:11:52,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:11:52,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976293702] [2023-12-21 14:11:52,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:11:52,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:11:52,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:11:52,442 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 14:11:52,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:11:52,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976293702] [2023-12-21 14:11:52,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976293702] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:11:52,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:11:52,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 14:11:52,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162532696] [2023-12-21 14:11:52,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:11:52,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 14:11:52,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:11:52,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 14:11:52,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-21 14:11:52,444 INFO L87 Difference]: Start difference. First operand 315106 states and 410791 transitions. Second operand has 8 states, 8 states have (on average 19.375) internal successors, (155), 8 states have internal predecessors, (155), 0 states have call successors, (0), 0 states 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 14:11:54,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:11:54,367 INFO L93 Difference]: Finished difference Result 684844 states and 893789 transitions. [2023-12-21 14:11:54,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 14:11:54,367 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.375) internal successors, (155), 8 states have internal predecessors, (155), 0 states have call successors, (0), 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 155 [2023-12-21 14:11:54,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:11:55,308 INFO L225 Difference]: With dead ends: 684844 [2023-12-21 14:11:55,308 INFO L226 Difference]: Without dead ends: 383892 [2023-12-21 14:11:55,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2023-12-21 14:11:55,438 INFO L413 NwaCegarLoop]: 676 mSDtfsCounter, 1327 mSDsluCounter, 1157 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1327 SdHoareTripleChecker+Valid, 1833 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:11:55,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1327 Valid, 1833 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:11:55,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383892 states. [2023-12-21 14:11:59,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383892 to 379503. [2023-12-21 14:11:59,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379503 states, 379502 states have (on average 1.3041143393183698) internal successors, (494914), 379502 states have internal predecessors, (494914), 0 states have call successors, (0), 0 states 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 14:12:00,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379503 states to 379503 states and 494914 transitions. [2023-12-21 14:12:00,611 INFO L78 Accepts]: Start accepts. Automaton has 379503 states and 494914 transitions. Word has length 155 [2023-12-21 14:12:00,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:12:00,611 INFO L495 AbstractCegarLoop]: Abstraction has 379503 states and 494914 transitions. [2023-12-21 14:12:00,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.375) internal successors, (155), 8 states have internal predecessors, (155), 0 states have call successors, (0), 0 states 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 14:12:00,611 INFO L276 IsEmpty]: Start isEmpty. Operand 379503 states and 494914 transitions. [2023-12-21 14:12:00,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-21 14:12:00,619 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:12:00,619 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:12:00,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2023-12-21 14:12:00,619 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:12:00,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:12:00,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1030060178, now seen corresponding path program 1 times [2023-12-21 14:12:00,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:12:00,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670705266] [2023-12-21 14:12:00,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:12:00,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:12:00,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:12:00,742 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 14:12:00,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:12:00,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670705266] [2023-12-21 14:12:00,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670705266] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:12:00,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:12:00,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 14:12:00,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467961476] [2023-12-21 14:12:00,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:12:00,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 14:12:00,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:12:00,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 14:12:00,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-21 14:12:00,743 INFO L87 Difference]: Start difference. First operand 379503 states and 494914 transitions. Second operand has 8 states, 8 states have (on average 19.375) internal successors, (155), 8 states have internal predecessors, (155), 0 states have call successors, (0), 0 states 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 14:12:03,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:12:03,620 INFO L93 Difference]: Finished difference Result 903402 states and 1179160 transitions. [2023-12-21 14:12:03,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 14:12:03,621 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.375) internal successors, (155), 8 states have internal predecessors, (155), 0 states have call successors, (0), 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 155 [2023-12-21 14:12:03,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:12:04,671 INFO L225 Difference]: With dead ends: 903402 [2023-12-21 14:12:04,671 INFO L226 Difference]: Without dead ends: 537953 [2023-12-21 14:12:04,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2023-12-21 14:12:04,822 INFO L413 NwaCegarLoop]: 677 mSDtfsCounter, 1309 mSDsluCounter, 1154 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1309 SdHoareTripleChecker+Valid, 1831 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:12:04,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1309 Valid, 1831 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:12:05,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537953 states. [2023-12-21 14:12:10,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537953 to 536430. [2023-12-21 14:12:10,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536430 states, 536429 states have (on average 1.3045640709208488) internal successors, (699806), 536429 states have internal predecessors, (699806), 0 states have call successors, (0), 0 states 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 14:12:12,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536430 states to 536430 states and 699806 transitions. [2023-12-21 14:12:12,203 INFO L78 Accepts]: Start accepts. Automaton has 536430 states and 699806 transitions. Word has length 155 [2023-12-21 14:12:12,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:12:12,203 INFO L495 AbstractCegarLoop]: Abstraction has 536430 states and 699806 transitions. [2023-12-21 14:12:12,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.375) internal successors, (155), 8 states have internal predecessors, (155), 0 states have call successors, (0), 0 states 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 14:12:12,203 INFO L276 IsEmpty]: Start isEmpty. Operand 536430 states and 699806 transitions. [2023-12-21 14:12:12,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-21 14:12:12,211 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:12:12,212 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:12:12,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2023-12-21 14:12:12,212 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:12:12,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:12:12,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1142795508, now seen corresponding path program 1 times [2023-12-21 14:12:12,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:12:12,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907646481] [2023-12-21 14:12:12,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:12:12,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:12:12,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:12:12,346 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 14:12:12,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:12:12,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907646481] [2023-12-21 14:12:12,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907646481] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:12:12,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:12:12,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 14:12:12,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356026465] [2023-12-21 14:12:12,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:12:12,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 14:12:12,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:12:12,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 14:12:12,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-21 14:12:12,347 INFO L87 Difference]: Start difference. First operand 536430 states and 699806 transitions. Second operand has 8 states, 8 states have (on average 19.375) internal successors, (155), 8 states have internal predecessors, (155), 0 states have call successors, (0), 0 states 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 14:12:16,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:12:16,638 INFO L93 Difference]: Finished difference Result 1211745 states and 1582047 transitions. [2023-12-21 14:12:16,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 14:12:16,638 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.375) internal successors, (155), 8 states have internal predecessors, (155), 0 states have call successors, (0), 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 155 [2023-12-21 14:12:16,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:12:18,102 INFO L225 Difference]: With dead ends: 1211745 [2023-12-21 14:12:18,102 INFO L226 Difference]: Without dead ends: 689267 [2023-12-21 14:12:18,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2023-12-21 14:12:18,633 INFO L413 NwaCegarLoop]: 667 mSDtfsCounter, 1333 mSDsluCounter, 1147 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1333 SdHoareTripleChecker+Valid, 1814 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:12:18,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1333 Valid, 1814 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:12:19,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689267 states. [2023-12-21 14:12:26,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689267 to 682978. [2023-12-21 14:12:26,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 682978 states, 682977 states have (on average 1.3051069069675845) internal successors, (891358), 682977 states have internal predecessors, (891358), 0 states have call successors, (0), 0 states 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 14:12:28,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682978 states to 682978 states and 891358 transitions. [2023-12-21 14:12:28,215 INFO L78 Accepts]: Start accepts. Automaton has 682978 states and 891358 transitions. Word has length 155 [2023-12-21 14:12:28,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:12:28,215 INFO L495 AbstractCegarLoop]: Abstraction has 682978 states and 891358 transitions. [2023-12-21 14:12:28,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.375) internal successors, (155), 8 states have internal predecessors, (155), 0 states have call successors, (0), 0 states 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 14:12:28,215 INFO L276 IsEmpty]: Start isEmpty. Operand 682978 states and 891358 transitions. [2023-12-21 14:12:28,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-21 14:12:28,223 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:12:28,223 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:12:28,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2023-12-21 14:12:28,223 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:12:28,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:12:28,223 INFO L85 PathProgramCache]: Analyzing trace with hash -513564521, now seen corresponding path program 1 times [2023-12-21 14:12:28,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:12:28,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729341219] [2023-12-21 14:12:28,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:12:28,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:12:28,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:12:28,708 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 14:12:28,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:12:28,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729341219] [2023-12-21 14:12:28,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729341219] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:12:28,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:12:28,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 14:12:28,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117470936] [2023-12-21 14:12:28,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:12:28,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 14:12:28,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:12:28,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 14:12:28,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-21 14:12:28,710 INFO L87 Difference]: Start difference. First operand 682978 states and 891358 transitions. Second operand has 8 states, 8 states have (on average 19.375) internal successors, (155), 8 states have internal predecessors, (155), 0 states have call successors, (0), 0 states 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 14:12:34,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:12:34,064 INFO L93 Difference]: Finished difference Result 1550550 states and 2025032 transitions. [2023-12-21 14:12:34,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 14:12:34,064 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.375) internal successors, (155), 8 states have internal predecessors, (155), 0 states have call successors, (0), 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 155 [2023-12-21 14:12:34,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:12:36,446 INFO L225 Difference]: With dead ends: 1550550 [2023-12-21 14:12:36,446 INFO L226 Difference]: Without dead ends: 881388 [2023-12-21 14:12:37,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2023-12-21 14:12:37,288 INFO L413 NwaCegarLoop]: 604 mSDtfsCounter, 1440 mSDsluCounter, 1165 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1440 SdHoareTripleChecker+Valid, 1769 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:12:37,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1440 Valid, 1769 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:12:38,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881388 states. [2023-12-21 14:12:47,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881388 to 858083. [2023-12-21 14:12:48,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 858083 states, 858082 states have (on average 1.3055290753098188) internal successors, (1120251), 858082 states have internal predecessors, (1120251), 0 states have call successors, (0), 0 states 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 14:12:52,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858083 states to 858083 states and 1120251 transitions. [2023-12-21 14:12:52,046 INFO L78 Accepts]: Start accepts. Automaton has 858083 states and 1120251 transitions. Word has length 155 [2023-12-21 14:12:52,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:12:52,046 INFO L495 AbstractCegarLoop]: Abstraction has 858083 states and 1120251 transitions. [2023-12-21 14:12:52,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.375) internal successors, (155), 8 states have internal predecessors, (155), 0 states have call successors, (0), 0 states 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 14:12:52,046 INFO L276 IsEmpty]: Start isEmpty. Operand 858083 states and 1120251 transitions. [2023-12-21 14:12:52,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-21 14:12:52,055 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:12:52,055 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:12:52,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2023-12-21 14:12:52,055 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:12:52,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:12:52,056 INFO L85 PathProgramCache]: Analyzing trace with hash -900888747, now seen corresponding path program 1 times [2023-12-21 14:12:52,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:12:52,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774664108] [2023-12-21 14:12:52,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:12:52,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:12:52,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:12:52,147 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 14:12:52,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:12:52,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774664108] [2023-12-21 14:12:52,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774664108] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:12:52,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:12:52,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:12:52,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394434214] [2023-12-21 14:12:52,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:12:52,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:12:52,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:12:52,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:12:52,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:12:52,150 INFO L87 Difference]: Start difference. First operand 858083 states and 1120251 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states 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 14:12:58,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:12:58,152 INFO L93 Difference]: Finished difference Result 1864425 states and 2424153 transitions. [2023-12-21 14:12:58,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:12:58,152 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 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 155 [2023-12-21 14:12:58,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:13:01,210 INFO L225 Difference]: With dead ends: 1864425 [2023-12-21 14:13:01,215 INFO L226 Difference]: Without dead ends: 1010158 [2023-12-21 14:13:01,993 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 14:13:01,993 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 113 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:13:01,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 409 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:13:02,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1010158 states.