/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 true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 02:49:45,583 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 02:49:45,647 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 02:49:45,651 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 02:49:45,652 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 02:49:45,671 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 02:49:45,672 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 02:49:45,672 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 02:49:45,673 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 02:49:45,675 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 02:49:45,675 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 02:49:45,680 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 02:49:45,680 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 02:49:45,681 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 02:49:45,681 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 02:49:45,681 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 02:49:45,682 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 02:49:45,682 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 02:49:45,682 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 02:49:45,682 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 02:49:45,682 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 02:49:45,682 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 02:49:45,683 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 02:49:45,683 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 02:49:45,683 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 02:49:45,683 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 02:49:45,683 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 02:49:45,683 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 02:49:45,684 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 02:49:45,684 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 02:49:45,684 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 02:49:45,684 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 02:49:45,685 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 02:49:45,685 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 02:49:45,685 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 02:49:45,685 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 02:49:45,685 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 02:49:45,685 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 02:49:45,685 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 02:49:45,685 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 02:49:45,685 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 02:49:45,686 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 02:49:45,686 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 02:49:45,686 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-20 02:49:45,850 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 02:49:45,869 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 02:49:45,871 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 02:49:45,871 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 02:49:45,872 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 02:49:45,872 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2023-12-20 02:49:46,745 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 02:49:46,901 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 02:49:46,901 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2023-12-20 02:49:46,908 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65ea9489c/e6c8f5c90d4249218d6b5f3d61f11b0c/FLAG71a90bdf7 [2023-12-20 02:49:46,918 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65ea9489c/e6c8f5c90d4249218d6b5f3d61f11b0c [2023-12-20 02:49:46,920 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 02:49:46,921 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 02:49:46,921 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 02:49:46,922 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 02:49:46,925 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 02:49:46,925 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 02:49:46" (1/1) ... [2023-12-20 02:49:46,926 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b177b67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:49:46, skipping insertion in model container [2023-12-20 02:49:46,926 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 02:49:46" (1/1) ... [2023-12-20 02:49:46,961 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 02:49:47,102 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-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[7107,7120] [2023-12-20 02:49:47,150 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 02:49:47,164 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 02:49:47,201 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-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[7107,7120] [2023-12-20 02:49:47,220 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 02:49:47,236 INFO L206 MainTranslator]: Completed translation [2023-12-20 02:49:47,236 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:49:47 WrapperNode [2023-12-20 02:49:47,236 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 02:49:47,240 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 02:49:47,240 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 02:49:47,240 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 02:49:47,244 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:49:47" (1/1) ... [2023-12-20 02:49:47,258 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:49:47" (1/1) ... [2023-12-20 02:49:47,311 INFO L138 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 715 [2023-12-20 02:49:47,311 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 02:49:47,312 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 02:49:47,312 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 02:49:47,312 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 02:49:47,325 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:49:47" (1/1) ... [2023-12-20 02:49:47,325 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:49:47" (1/1) ... [2023-12-20 02:49:47,335 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:49:47" (1/1) ... [2023-12-20 02:49:47,358 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-20 02:49:47,358 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:49:47" (1/1) ... [2023-12-20 02:49:47,358 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:49:47" (1/1) ... [2023-12-20 02:49:47,367 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:49:47" (1/1) ... [2023-12-20 02:49:47,377 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:49:47" (1/1) ... [2023-12-20 02:49:47,385 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:49:47" (1/1) ... [2023-12-20 02:49:47,387 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:49:47" (1/1) ... [2023-12-20 02:49:47,389 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 02:49:47,390 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 02:49:47,390 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 02:49:47,390 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 02:49:47,391 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:49:47" (1/1) ... [2023-12-20 02:49:47,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 02:49:47,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 02:49:47,422 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-20 02:49:47,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-20 02:49:47,443 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 02:49:47,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 02:49:47,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 02:49:47,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 02:49:47,553 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 02:49:47,555 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 02:49:47,979 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 02:49:48,021 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 02:49:48,021 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-20 02:49:48,022 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 02:49:48 BoogieIcfgContainer [2023-12-20 02:49:48,022 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 02:49:48,023 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 02:49:48,023 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 02:49:48,025 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 02:49:48,026 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 02:49:46" (1/3) ... [2023-12-20 02:49:48,026 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f8c97c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 02:49:48, skipping insertion in model container [2023-12-20 02:49:48,026 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:49:47" (2/3) ... [2023-12-20 02:49:48,027 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f8c97c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 02:49:48, skipping insertion in model container [2023-12-20 02:49:48,027 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 02:49:48" (3/3) ... [2023-12-20 02:49:48,029 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2023-12-20 02:49:48,040 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 02:49:48,040 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 02:49:48,079 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 02:49:48,083 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;@32ac8f7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 02:49:48,084 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 02:49:48,087 INFO L276 IsEmpty]: Start isEmpty. Operand has 177 states, 175 states have (on average 1.7257142857142858) internal successors, (302), 176 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:48,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-20 02:49:48,093 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:49:48,094 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:49:48,094 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:49:48,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:49:48,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1323163456, now seen corresponding path program 1 times [2023-12-20 02:49:48,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:49:48,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359286513] [2023-12-20 02:49:48,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:49:48,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:49:48,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:49:48,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:49:48,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:49:48,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359286513] [2023-12-20 02:49:48,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359286513] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:49:48,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:49:48,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 02:49:48,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854725935] [2023-12-20 02:49:48,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:49:48,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 02:49:48,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:49:48,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 02:49:48,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 02:49:48,516 INFO L87 Difference]: Start difference. First operand has 177 states, 175 states have (on average 1.7257142857142858) internal successors, (302), 176 states have internal predecessors, (302), 0 states have call successors, (0), 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 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:48,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:49:48,706 INFO L93 Difference]: Finished difference Result 632 states and 1027 transitions. [2023-12-20 02:49:48,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 02:49:48,708 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2023-12-20 02:49:48,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:49:48,723 INFO L225 Difference]: With dead ends: 632 [2023-12-20 02:49:48,723 INFO L226 Difference]: Without dead ends: 539 [2023-12-20 02:49:48,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-20 02:49:48,728 INFO L413 NwaCegarLoop]: 293 mSDtfsCounter, 1594 mSDsluCounter, 802 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1594 SdHoareTripleChecker+Valid, 1095 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 02:49:48,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1594 Valid, 1095 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 02:49:48,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2023-12-20 02:49:48,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 273. [2023-12-20 02:49:48,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 272 states have (on average 1.5147058823529411) internal successors, (412), 272 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:48,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 412 transitions. [2023-12-20 02:49:48,766 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 412 transitions. Word has length 63 [2023-12-20 02:49:48,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:49:48,767 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 412 transitions. [2023-12-20 02:49:48,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:48,767 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 412 transitions. [2023-12-20 02:49:48,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-20 02:49:48,768 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:49:48,768 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:49:48,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 02:49:48,769 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:49:48,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:49:48,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1651716700, now seen corresponding path program 1 times [2023-12-20 02:49:48,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:49:48,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126640040] [2023-12-20 02:49:48,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:49:48,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:49:48,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:49:48,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:49:48,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:49:48,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126640040] [2023-12-20 02:49:48,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126640040] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:49:48,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:49:48,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 02:49:48,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318301605] [2023-12-20 02:49:48,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:49:48,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 02:49:48,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:49:48,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 02:49:48,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-20 02:49:48,968 INFO L87 Difference]: Start difference. First operand 273 states and 412 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:49,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:49:49,074 INFO L93 Difference]: Finished difference Result 1011 states and 1564 transitions. [2023-12-20 02:49:49,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 02:49:49,075 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2023-12-20 02:49:49,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:49:49,078 INFO L225 Difference]: With dead ends: 1011 [2023-12-20 02:49:49,078 INFO L226 Difference]: Without dead ends: 799 [2023-12-20 02:49:49,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-20 02:49:49,082 INFO L413 NwaCegarLoop]: 389 mSDtfsCounter, 841 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 841 SdHoareTripleChecker+Valid, 851 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 02:49:49,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [841 Valid, 851 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 02:49:49,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2023-12-20 02:49:49,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 793. [2023-12-20 02:49:49,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 793 states, 792 states have (on average 1.5366161616161615) internal successors, (1217), 792 states have internal predecessors, (1217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:49,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 1217 transitions. [2023-12-20 02:49:49,101 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 1217 transitions. Word has length 64 [2023-12-20 02:49:49,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:49:49,101 INFO L495 AbstractCegarLoop]: Abstraction has 793 states and 1217 transitions. [2023-12-20 02:49:49,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:49,101 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 1217 transitions. [2023-12-20 02:49:49,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-20 02:49:49,103 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:49:49,103 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:49:49,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 02:49:49,104 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:49:49,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:49:49,104 INFO L85 PathProgramCache]: Analyzing trace with hash -61672826, now seen corresponding path program 1 times [2023-12-20 02:49:49,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:49:49,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622221493] [2023-12-20 02:49:49,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:49:49,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:49:49,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:49:49,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:49:49,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:49:49,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622221493] [2023-12-20 02:49:49,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622221493] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:49:49,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:49:49,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 02:49:49,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44291168] [2023-12-20 02:49:49,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:49:49,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 02:49:49,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:49:49,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 02:49:49,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 02:49:49,170 INFO L87 Difference]: Start difference. First operand 793 states and 1217 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:49,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:49:49,321 INFO L93 Difference]: Finished difference Result 2125 states and 3303 transitions. [2023-12-20 02:49:49,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 02:49:49,321 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2023-12-20 02:49:49,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:49:49,326 INFO L225 Difference]: With dead ends: 2125 [2023-12-20 02:49:49,326 INFO L226 Difference]: Without dead ends: 1381 [2023-12-20 02:49:49,328 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 [2023-12-20 02:49:49,331 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 1001 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1001 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 02:49:49,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1001 Valid, 244 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 02:49:49,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1381 states. [2023-12-20 02:49:49,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1381 to 1379. [2023-12-20 02:49:49,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1379 states, 1378 states have (on average 1.5457184325108853) internal successors, (2130), 1378 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:49,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1379 states to 1379 states and 2130 transitions. [2023-12-20 02:49:49,356 INFO L78 Accepts]: Start accepts. Automaton has 1379 states and 2130 transitions. Word has length 65 [2023-12-20 02:49:49,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:49:49,358 INFO L495 AbstractCegarLoop]: Abstraction has 1379 states and 2130 transitions. [2023-12-20 02:49:49,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:49,361 INFO L276 IsEmpty]: Start isEmpty. Operand 1379 states and 2130 transitions. [2023-12-20 02:49:49,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-20 02:49:49,368 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:49:49,368 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:49:49,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 02:49:49,368 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:49:49,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:49:49,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1309679336, now seen corresponding path program 1 times [2023-12-20 02:49:49,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:49:49,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539488749] [2023-12-20 02:49:49,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:49:49,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:49:49,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:49:49,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:49:49,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:49:49,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539488749] [2023-12-20 02:49:49,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539488749] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:49:49,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:49:49,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 02:49:49,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327513585] [2023-12-20 02:49:49,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:49:49,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 02:49:49,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:49:49,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 02:49:49,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 02:49:49,492 INFO L87 Difference]: Start difference. First operand 1379 states and 2130 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:49,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:49:49,651 INFO L93 Difference]: Finished difference Result 3711 states and 5788 transitions. [2023-12-20 02:49:49,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 02:49:49,652 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2023-12-20 02:49:49,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:49:49,659 INFO L225 Difference]: With dead ends: 3711 [2023-12-20 02:49:49,659 INFO L226 Difference]: Without dead ends: 2431 [2023-12-20 02:49:49,661 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 [2023-12-20 02:49:49,661 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 927 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 927 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 02:49:49,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [927 Valid, 250 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 02:49:49,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2431 states. [2023-12-20 02:49:49,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2431 to 2429. [2023-12-20 02:49:49,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2429 states, 2428 states have (on average 1.5502471169686984) internal successors, (3764), 2428 states have internal predecessors, (3764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:49,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2429 states to 2429 states and 3764 transitions. [2023-12-20 02:49:49,701 INFO L78 Accepts]: Start accepts. Automaton has 2429 states and 3764 transitions. Word has length 65 [2023-12-20 02:49:49,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:49:49,701 INFO L495 AbstractCegarLoop]: Abstraction has 2429 states and 3764 transitions. [2023-12-20 02:49:49,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:49,702 INFO L276 IsEmpty]: Start isEmpty. Operand 2429 states and 3764 transitions. [2023-12-20 02:49:49,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-20 02:49:49,703 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:49:49,703 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:49:49,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 02:49:49,703 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:49:49,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:49:49,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1039716905, now seen corresponding path program 1 times [2023-12-20 02:49:49,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:49:49,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176741031] [2023-12-20 02:49:49,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:49:49,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:49:49,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:49:49,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:49:49,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:49:49,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176741031] [2023-12-20 02:49:49,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176741031] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:49:49,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:49:49,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 02:49:49,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501621179] [2023-12-20 02:49:49,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:49:49,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 02:49:49,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:49:49,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 02:49:49,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 02:49:49,788 INFO L87 Difference]: Start difference. First operand 2429 states and 3764 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:49,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:49:49,959 INFO L93 Difference]: Finished difference Result 6932 states and 10799 transitions. [2023-12-20 02:49:49,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 02:49:49,960 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2023-12-20 02:49:49,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:49:49,971 INFO L225 Difference]: With dead ends: 6932 [2023-12-20 02:49:49,971 INFO L226 Difference]: Without dead ends: 4575 [2023-12-20 02:49:49,974 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 [2023-12-20 02:49:49,975 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 953 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 953 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 02:49:49,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [953 Valid, 248 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 02:49:49,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4575 states. [2023-12-20 02:49:50,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4575 to 4573. [2023-12-20 02:49:50,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4573 states, 4572 states have (on average 1.5485564304461943) internal successors, (7080), 4572 states have internal predecessors, (7080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:50,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4573 states to 4573 states and 7080 transitions. [2023-12-20 02:49:50,042 INFO L78 Accepts]: Start accepts. Automaton has 4573 states and 7080 transitions. Word has length 65 [2023-12-20 02:49:50,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:49:50,043 INFO L495 AbstractCegarLoop]: Abstraction has 4573 states and 7080 transitions. [2023-12-20 02:49:50,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:50,043 INFO L276 IsEmpty]: Start isEmpty. Operand 4573 states and 7080 transitions. [2023-12-20 02:49:50,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-20 02:49:50,044 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:49:50,044 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:49:50,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 02:49:50,044 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:49:50,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:49:50,047 INFO L85 PathProgramCache]: Analyzing trace with hash 641592565, now seen corresponding path program 1 times [2023-12-20 02:49:50,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:49:50,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578275491] [2023-12-20 02:49:50,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:49:50,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:49:50,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:49:50,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:49:50,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:49:50,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578275491] [2023-12-20 02:49:50,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578275491] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:49:50,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:49:50,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 02:49:50,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8537254] [2023-12-20 02:49:50,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:49:50,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 02:49:50,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:49:50,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 02:49:50,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 02:49:50,103 INFO L87 Difference]: Start difference. First operand 4573 states and 7080 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:50,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:49:50,296 INFO L93 Difference]: Finished difference Result 13471 states and 20915 transitions. [2023-12-20 02:49:50,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 02:49:50,296 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2023-12-20 02:49:50,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:49:50,320 INFO L225 Difference]: With dead ends: 13471 [2023-12-20 02:49:50,320 INFO L226 Difference]: Without dead ends: 8931 [2023-12-20 02:49:50,327 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 [2023-12-20 02:49:50,329 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 1013 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1013 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 02:49:50,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1013 Valid, 242 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 02:49:50,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8931 states. [2023-12-20 02:49:50,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8931 to 8929. [2023-12-20 02:49:50,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8929 states, 8928 states have (on average 1.5408826164874552) internal successors, (13757), 8928 states have internal predecessors, (13757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:50,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8929 states to 8929 states and 13757 transitions. [2023-12-20 02:49:50,500 INFO L78 Accepts]: Start accepts. Automaton has 8929 states and 13757 transitions. Word has length 65 [2023-12-20 02:49:50,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:49:50,500 INFO L495 AbstractCegarLoop]: Abstraction has 8929 states and 13757 transitions. [2023-12-20 02:49:50,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:50,501 INFO L276 IsEmpty]: Start isEmpty. Operand 8929 states and 13757 transitions. [2023-12-20 02:49:50,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-20 02:49:50,502 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:49:50,502 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:49:50,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 02:49:50,502 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:49:50,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:49:50,503 INFO L85 PathProgramCache]: Analyzing trace with hash 727550024, now seen corresponding path program 1 times [2023-12-20 02:49:50,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:49:50,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578542508] [2023-12-20 02:49:50,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:49:50,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:49:50,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:49:50,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:49:50,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:49:50,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578542508] [2023-12-20 02:49:50,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578542508] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:49:50,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:49:50,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 02:49:50,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550202540] [2023-12-20 02:49:50,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:49:50,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 02:49:50,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:49:50,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 02:49:50,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 02:49:50,671 INFO L87 Difference]: Start difference. First operand 8929 states and 13757 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:50,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:49:50,743 INFO L93 Difference]: Finished difference Result 17507 states and 26910 transitions. [2023-12-20 02:49:50,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 02:49:50,743 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-12-20 02:49:50,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:49:50,789 INFO L225 Difference]: With dead ends: 17507 [2023-12-20 02:49:50,790 INFO L226 Difference]: Without dead ends: 17505 [2023-12-20 02:49:50,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-20 02:49:50,800 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 246 mSDsluCounter, 732 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 982 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:49:50,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 982 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:49:50,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17505 states. [2023-12-20 02:49:50,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17505 to 9185. [2023-12-20 02:49:50,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9185 states, 9184 states have (on average 1.5258057491289199) internal successors, (14013), 9184 states have internal predecessors, (14013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:51,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9185 states to 9185 states and 14013 transitions. [2023-12-20 02:49:51,007 INFO L78 Accepts]: Start accepts. Automaton has 9185 states and 14013 transitions. Word has length 66 [2023-12-20 02:49:51,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:49:51,008 INFO L495 AbstractCegarLoop]: Abstraction has 9185 states and 14013 transitions. [2023-12-20 02:49:51,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:51,009 INFO L276 IsEmpty]: Start isEmpty. Operand 9185 states and 14013 transitions. [2023-12-20 02:49:51,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-20 02:49:51,012 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:49:51,012 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] [2023-12-20 02:49:51,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 02:49:51,012 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:49:51,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:49:51,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1358621374, now seen corresponding path program 1 times [2023-12-20 02:49:51,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:49:51,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764996201] [2023-12-20 02:49:51,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:49:51,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:49:51,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:49:51,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:49:51,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:49:51,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764996201] [2023-12-20 02:49:51,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764996201] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:49:51,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:49:51,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 02:49:51,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075224165] [2023-12-20 02:49:51,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:49:51,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 02:49:51,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:49:51,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 02:49:51,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-20 02:49:51,255 INFO L87 Difference]: Start difference. First operand 9185 states and 14013 transitions. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:52,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:49:52,245 INFO L93 Difference]: Finished difference Result 41172 states and 62278 transitions. [2023-12-20 02:49:52,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-20 02:49:52,246 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2023-12-20 02:49:52,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:49:52,301 INFO L225 Difference]: With dead ends: 41172 [2023-12-20 02:49:52,302 INFO L226 Difference]: Without dead ends: 35358 [2023-12-20 02:49:52,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=197, Invalid=559, Unknown=0, NotChecked=0, Total=756 [2023-12-20 02:49:52,321 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 2183 mSDsluCounter, 925 mSDsCounter, 0 mSdLazyCounter, 939 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2183 SdHoareTripleChecker+Valid, 1149 SdHoareTripleChecker+Invalid, 948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 939 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 02:49:52,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2183 Valid, 1149 Invalid, 948 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 939 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 02:49:52,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35358 states. [2023-12-20 02:49:52,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35358 to 9318. [2023-12-20 02:49:52,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9318 states, 9317 states have (on average 1.522807770741655) internal successors, (14188), 9317 states have internal predecessors, (14188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:52,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9318 states to 9318 states and 14188 transitions. [2023-12-20 02:49:52,636 INFO L78 Accepts]: Start accepts. Automaton has 9318 states and 14188 transitions. Word has length 67 [2023-12-20 02:49:52,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:49:52,637 INFO L495 AbstractCegarLoop]: Abstraction has 9318 states and 14188 transitions. [2023-12-20 02:49:52,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:52,637 INFO L276 IsEmpty]: Start isEmpty. Operand 9318 states and 14188 transitions. [2023-12-20 02:49:52,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-20 02:49:52,639 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:49:52,639 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] [2023-12-20 02:49:52,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 02:49:52,639 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:49:52,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:49:52,639 INFO L85 PathProgramCache]: Analyzing trace with hash 984808062, now seen corresponding path program 1 times [2023-12-20 02:49:52,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:49:52,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227125036] [2023-12-20 02:49:52,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:49:52,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:49:52,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:49:52,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:49:52,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:49:52,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227125036] [2023-12-20 02:49:52,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227125036] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:49:52,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:49:52,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 02:49:52,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167929441] [2023-12-20 02:49:52,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:49:52,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 02:49:52,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:49:52,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 02:49:52,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-20 02:49:52,896 INFO L87 Difference]: Start difference. First operand 9318 states and 14188 transitions. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:53,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:49:53,856 INFO L93 Difference]: Finished difference Result 24813 states and 37528 transitions. [2023-12-20 02:49:53,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-20 02:49:53,857 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2023-12-20 02:49:53,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:49:53,892 INFO L225 Difference]: With dead ends: 24813 [2023-12-20 02:49:53,893 INFO L226 Difference]: Without dead ends: 23506 [2023-12-20 02:49:53,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=189, Invalid=513, Unknown=0, NotChecked=0, Total=702 [2023-12-20 02:49:53,905 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 1685 mSDsluCounter, 1061 mSDsCounter, 0 mSdLazyCounter, 1050 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1685 SdHoareTripleChecker+Valid, 1307 SdHoareTripleChecker+Invalid, 1058 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1050 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 02:49:53,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1685 Valid, 1307 Invalid, 1058 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1050 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 02:49:53,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23506 states. [2023-12-20 02:49:54,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23506 to 9318. [2023-12-20 02:49:54,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9318 states, 9317 states have (on average 1.522593109369969) internal successors, (14186), 9317 states have internal predecessors, (14186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:54,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9318 states to 9318 states and 14186 transitions. [2023-12-20 02:49:54,084 INFO L78 Accepts]: Start accepts. Automaton has 9318 states and 14186 transitions. Word has length 67 [2023-12-20 02:49:54,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:49:54,084 INFO L495 AbstractCegarLoop]: Abstraction has 9318 states and 14186 transitions. [2023-12-20 02:49:54,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:54,084 INFO L276 IsEmpty]: Start isEmpty. Operand 9318 states and 14186 transitions. [2023-12-20 02:49:54,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-20 02:49:54,086 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:49:54,086 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] [2023-12-20 02:49:54,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 02:49:54,086 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:49:54,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:49:54,087 INFO L85 PathProgramCache]: Analyzing trace with hash -838054242, now seen corresponding path program 1 times [2023-12-20 02:49:54,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:49:54,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715101741] [2023-12-20 02:49:54,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:49:54,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:49:54,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:49:54,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:49:54,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:49:54,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715101741] [2023-12-20 02:49:54,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715101741] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:49:54,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:49:54,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 02:49:54,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623007469] [2023-12-20 02:49:54,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:49:54,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 02:49:54,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:49:54,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 02:49:54,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-20 02:49:54,311 INFO L87 Difference]: Start difference. First operand 9318 states and 14186 transitions. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:55,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:49:55,339 INFO L93 Difference]: Finished difference Result 37244 states and 56329 transitions. [2023-12-20 02:49:55,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-20 02:49:55,340 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2023-12-20 02:49:55,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:49:55,389 INFO L225 Difference]: With dead ends: 37244 [2023-12-20 02:49:55,389 INFO L226 Difference]: Without dead ends: 33667 [2023-12-20 02:49:55,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=143, Invalid=457, Unknown=0, NotChecked=0, Total=600 [2023-12-20 02:49:55,404 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 1521 mSDsluCounter, 1484 mSDsCounter, 0 mSdLazyCounter, 1401 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1521 SdHoareTripleChecker+Valid, 1724 SdHoareTripleChecker+Invalid, 1409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-20 02:49:55,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1521 Valid, 1724 Invalid, 1409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1401 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-20 02:49:55,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33667 states. [2023-12-20 02:49:55,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33667 to 9541. [2023-12-20 02:49:55,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9541 states, 9540 states have (on average 1.5183438155136268) internal successors, (14485), 9540 states have internal predecessors, (14485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:55,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9541 states to 9541 states and 14485 transitions. [2023-12-20 02:49:55,682 INFO L78 Accepts]: Start accepts. Automaton has 9541 states and 14485 transitions. Word has length 67 [2023-12-20 02:49:55,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:49:55,682 INFO L495 AbstractCegarLoop]: Abstraction has 9541 states and 14485 transitions. [2023-12-20 02:49:55,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:55,682 INFO L276 IsEmpty]: Start isEmpty. Operand 9541 states and 14485 transitions. [2023-12-20 02:49:55,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-20 02:49:55,684 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:49:55,684 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] [2023-12-20 02:49:55,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 02:49:55,684 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:49:55,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:49:55,685 INFO L85 PathProgramCache]: Analyzing trace with hash 296668894, now seen corresponding path program 1 times [2023-12-20 02:49:55,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:49:55,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193850998] [2023-12-20 02:49:55,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:49:55,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:49:55,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:49:55,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:49:55,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:49:55,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193850998] [2023-12-20 02:49:55,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193850998] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:49:55,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:49:55,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 02:49:55,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964789482] [2023-12-20 02:49:55,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:49:55,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 02:49:55,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:49:55,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 02:49:55,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-20 02:49:55,849 INFO L87 Difference]: Start difference. First operand 9541 states and 14485 transitions. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:56,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:49:56,698 INFO L93 Difference]: Finished difference Result 42239 states and 63608 transitions. [2023-12-20 02:49:56,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-20 02:49:56,699 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2023-12-20 02:49:56,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:49:56,739 INFO L225 Difference]: With dead ends: 42239 [2023-12-20 02:49:56,739 INFO L226 Difference]: Without dead ends: 33380 [2023-12-20 02:49:56,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=177, Invalid=525, Unknown=0, NotChecked=0, Total=702 [2023-12-20 02:49:56,755 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 1508 mSDsluCounter, 1117 mSDsCounter, 0 mSdLazyCounter, 1147 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1508 SdHoareTripleChecker+Valid, 1386 SdHoareTripleChecker+Invalid, 1156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 02:49:56,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1508 Valid, 1386 Invalid, 1156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1147 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 02:49:56,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33380 states. [2023-12-20 02:49:57,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33380 to 9675. [2023-12-20 02:49:57,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9675 states, 9674 states have (on average 1.5121976431672524) internal successors, (14629), 9674 states have internal predecessors, (14629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:57,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9675 states to 9675 states and 14629 transitions. [2023-12-20 02:49:57,071 INFO L78 Accepts]: Start accepts. Automaton has 9675 states and 14629 transitions. Word has length 67 [2023-12-20 02:49:57,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:49:57,071 INFO L495 AbstractCegarLoop]: Abstraction has 9675 states and 14629 transitions. [2023-12-20 02:49:57,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:57,071 INFO L276 IsEmpty]: Start isEmpty. Operand 9675 states and 14629 transitions. [2023-12-20 02:49:57,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-20 02:49:57,073 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:49:57,074 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] [2023-12-20 02:49:57,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 02:49:57,074 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:49:57,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:49:57,074 INFO L85 PathProgramCache]: Analyzing trace with hash 143038673, now seen corresponding path program 1 times [2023-12-20 02:49:57,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:49:57,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629496152] [2023-12-20 02:49:57,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:49:57,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:49:57,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:49:57,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:49:57,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:49:57,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629496152] [2023-12-20 02:49:57,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629496152] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:49:57,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:49:57,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 02:49:57,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046669113] [2023-12-20 02:49:57,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:49:57,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 02:49:57,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:49:57,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 02:49:57,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 02:49:57,168 INFO L87 Difference]: Start difference. First operand 9675 states and 14629 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:57,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:49:57,230 INFO L93 Difference]: Finished difference Result 25519 states and 38763 transitions. [2023-12-20 02:49:57,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 02:49:57,231 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2023-12-20 02:49:57,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:49:57,248 INFO L225 Difference]: With dead ends: 25519 [2023-12-20 02:49:57,248 INFO L226 Difference]: Without dead ends: 16941 [2023-12-20 02:49:57,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 02:49:57,260 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 170 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:49:57,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 603 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:49:57,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16941 states. [2023-12-20 02:49:57,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16941 to 16819. [2023-12-20 02:49:57,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16819 states, 16818 states have (on average 1.5013081222499702) internal successors, (25249), 16818 states have internal predecessors, (25249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:57,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16819 states to 16819 states and 25249 transitions. [2023-12-20 02:49:57,462 INFO L78 Accepts]: Start accepts. Automaton has 16819 states and 25249 transitions. Word has length 68 [2023-12-20 02:49:57,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:49:57,462 INFO L495 AbstractCegarLoop]: Abstraction has 16819 states and 25249 transitions. [2023-12-20 02:49:57,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:57,462 INFO L276 IsEmpty]: Start isEmpty. Operand 16819 states and 25249 transitions. [2023-12-20 02:49:57,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-20 02:49:57,464 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:49:57,464 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] [2023-12-20 02:49:57,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 02:49:57,464 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:49:57,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:49:57,465 INFO L85 PathProgramCache]: Analyzing trace with hash 897492929, now seen corresponding path program 1 times [2023-12-20 02:49:57,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:49:57,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890634891] [2023-12-20 02:49:57,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:49:57,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:49:57,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:49:57,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:49:57,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:49:57,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890634891] [2023-12-20 02:49:57,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890634891] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:49:57,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:49:57,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 02:49:57,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898674350] [2023-12-20 02:49:57,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:49:57,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 02:49:57,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:49:57,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 02:49:57,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:49:57,495 INFO L87 Difference]: Start difference. First operand 16819 states and 25249 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:57,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:49:57,560 INFO L93 Difference]: Finished difference Result 29183 states and 43866 transitions. [2023-12-20 02:49:57,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 02:49:57,560 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2023-12-20 02:49:57,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:49:57,580 INFO L225 Difference]: With dead ends: 29183 [2023-12-20 02:49:57,580 INFO L226 Difference]: Without dead ends: 20217 [2023-12-20 02:49:57,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:49:57,591 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 156 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:49:57,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 478 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:49:57,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20217 states. [2023-12-20 02:49:57,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20217 to 19983. [2023-12-20 02:49:57,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19983 states, 19982 states have (on average 1.48008207386648) internal successors, (29575), 19982 states have internal predecessors, (29575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:57,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19983 states to 19983 states and 29575 transitions. [2023-12-20 02:49:57,759 INFO L78 Accepts]: Start accepts. Automaton has 19983 states and 29575 transitions. Word has length 68 [2023-12-20 02:49:57,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:49:57,759 INFO L495 AbstractCegarLoop]: Abstraction has 19983 states and 29575 transitions. [2023-12-20 02:49:57,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:57,760 INFO L276 IsEmpty]: Start isEmpty. Operand 19983 states and 29575 transitions. [2023-12-20 02:49:57,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-20 02:49:57,764 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:49:57,764 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] [2023-12-20 02:49:57,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 02:49:57,765 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:49:57,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:49:57,765 INFO L85 PathProgramCache]: Analyzing trace with hash 136395041, now seen corresponding path program 1 times [2023-12-20 02:49:57,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:49:57,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247781711] [2023-12-20 02:49:57,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:49:57,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:49:57,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:49:57,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:49:57,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:49:57,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247781711] [2023-12-20 02:49:57,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247781711] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:49:57,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:49:57,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 02:49:57,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325197037] [2023-12-20 02:49:57,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:49:57,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 02:49:57,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:49:57,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 02:49:57,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:49:57,793 INFO L87 Difference]: Start difference. First operand 19983 states and 29575 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:57,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:49:57,899 INFO L93 Difference]: Finished difference Result 50135 states and 74405 transitions. [2023-12-20 02:49:57,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 02:49:57,899 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2023-12-20 02:49:57,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:49:57,935 INFO L225 Difference]: With dead ends: 50135 [2023-12-20 02:49:57,935 INFO L226 Difference]: Without dead ends: 33657 [2023-12-20 02:49:57,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:49:57,956 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 175 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:49:57,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 464 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:49:57,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33657 states. [2023-12-20 02:49:58,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33657 to 33591. [2023-12-20 02:49:58,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33591 states, 33590 states have (on average 1.4715391485561178) internal successors, (49429), 33590 states have internal predecessors, (49429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:58,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33591 states to 33591 states and 49429 transitions. [2023-12-20 02:49:58,308 INFO L78 Accepts]: Start accepts. Automaton has 33591 states and 49429 transitions. Word has length 68 [2023-12-20 02:49:58,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:49:58,308 INFO L495 AbstractCegarLoop]: Abstraction has 33591 states and 49429 transitions. [2023-12-20 02:49:58,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:58,309 INFO L276 IsEmpty]: Start isEmpty. Operand 33591 states and 49429 transitions. [2023-12-20 02:49:58,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-20 02:49:58,312 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:49:58,312 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] [2023-12-20 02:49:58,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 02:49:58,312 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:49:58,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:49:58,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1838550528, now seen corresponding path program 1 times [2023-12-20 02:49:58,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:49:58,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519195158] [2023-12-20 02:49:58,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:49:58,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:49:58,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:49:58,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:49:58,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:49:58,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519195158] [2023-12-20 02:49:58,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519195158] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:49:58,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:49:58,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 02:49:58,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942025920] [2023-12-20 02:49:58,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:49:58,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 02:49:58,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:49:58,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 02:49:58,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:49:58,339 INFO L87 Difference]: Start difference. First operand 33591 states and 49429 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:58,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:49:58,434 INFO L93 Difference]: Finished difference Result 46444 states and 68036 transitions. [2023-12-20 02:49:58,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 02:49:58,435 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2023-12-20 02:49:58,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:49:58,470 INFO L225 Difference]: With dead ends: 46444 [2023-12-20 02:49:58,471 INFO L226 Difference]: Without dead ends: 34324 [2023-12-20 02:49:58,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:49:58,486 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 144 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 464 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 [2023-12-20 02:49:58,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 464 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:49:58,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34324 states. [2023-12-20 02:49:58,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34324 to 30846. [2023-12-20 02:49:58,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30846 states, 30845 states have (on average 1.4431836602366672) internal successors, (44515), 30845 states have internal predecessors, (44515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:58,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30846 states to 30846 states and 44515 transitions. [2023-12-20 02:49:58,923 INFO L78 Accepts]: Start accepts. Automaton has 30846 states and 44515 transitions. Word has length 68 [2023-12-20 02:49:58,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:49:58,923 INFO L495 AbstractCegarLoop]: Abstraction has 30846 states and 44515 transitions. [2023-12-20 02:49:58,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:58,924 INFO L276 IsEmpty]: Start isEmpty. Operand 30846 states and 44515 transitions. [2023-12-20 02:49:58,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-20 02:49:58,926 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:49:58,926 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] [2023-12-20 02:49:58,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 02:49:58,927 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:49:58,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:49:58,927 INFO L85 PathProgramCache]: Analyzing trace with hash -100445024, now seen corresponding path program 1 times [2023-12-20 02:49:58,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:49:58,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544045411] [2023-12-20 02:49:58,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:49:58,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:49:58,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:49:58,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:49:58,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:49:58,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544045411] [2023-12-20 02:49:58,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544045411] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:49:58,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:49:58,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 02:49:58,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408342793] [2023-12-20 02:49:58,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:49:58,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 02:49:58,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:49:58,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 02:49:58,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:49:58,961 INFO L87 Difference]: Start difference. First operand 30846 states and 44515 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:59,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:49:59,096 INFO L93 Difference]: Finished difference Result 60635 states and 87269 transitions. [2023-12-20 02:49:59,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 02:49:59,097 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2023-12-20 02:49:59,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:49:59,131 INFO L225 Difference]: With dead ends: 60635 [2023-12-20 02:49:59,131 INFO L226 Difference]: Without dead ends: 33743 [2023-12-20 02:49:59,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:49:59,290 INFO L413 NwaCegarLoop]: 334 mSDtfsCounter, 162 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:49:59,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 554 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:49:59,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33743 states. [2023-12-20 02:49:59,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33743 to 33425. [2023-12-20 02:49:59,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33425 states, 33424 states have (on average 1.4062350406893251) internal successors, (47002), 33424 states have internal predecessors, (47002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:59,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33425 states to 33425 states and 47002 transitions. [2023-12-20 02:49:59,662 INFO L78 Accepts]: Start accepts. Automaton has 33425 states and 47002 transitions. Word has length 68 [2023-12-20 02:49:59,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:49:59,663 INFO L495 AbstractCegarLoop]: Abstraction has 33425 states and 47002 transitions. [2023-12-20 02:49:59,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:59,663 INFO L276 IsEmpty]: Start isEmpty. Operand 33425 states and 47002 transitions. [2023-12-20 02:49:59,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-20 02:49:59,665 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:49:59,665 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] [2023-12-20 02:49:59,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 02:49:59,666 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:49:59,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:49:59,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1940195899, now seen corresponding path program 1 times [2023-12-20 02:49:59,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:49:59,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420277021] [2023-12-20 02:49:59,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:49:59,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:49:59,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:49:59,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:49:59,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:49:59,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420277021] [2023-12-20 02:49:59,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420277021] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:49:59,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:49:59,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 02:49:59,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719500942] [2023-12-20 02:49:59,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:49:59,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 02:49:59,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:49:59,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 02:49:59,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-20 02:49:59,729 INFO L87 Difference]: Start difference. First operand 33425 states and 47002 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:59,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:49:59,936 INFO L93 Difference]: Finished difference Result 69851 states and 99128 transitions. [2023-12-20 02:49:59,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 02:49:59,937 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2023-12-20 02:49:59,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:50:00,007 INFO L225 Difference]: With dead ends: 69851 [2023-12-20 02:50:00,007 INFO L226 Difference]: Without dead ends: 56382 [2023-12-20 02:50:00,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-20 02:50:00,033 INFO L413 NwaCegarLoop]: 382 mSDtfsCounter, 1090 mSDsluCounter, 755 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1090 SdHoareTripleChecker+Valid, 1137 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:50:00,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1090 Valid, 1137 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:50:00,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56382 states. [2023-12-20 02:50:00,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56382 to 45615. [2023-12-20 02:50:00,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45615 states, 45614 states have (on average 1.4066953128425483) internal successors, (64165), 45614 states have internal predecessors, (64165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:50:00,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45615 states to 45615 states and 64165 transitions. [2023-12-20 02:50:00,702 INFO L78 Accepts]: Start accepts. Automaton has 45615 states and 64165 transitions. Word has length 69 [2023-12-20 02:50:00,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:50:00,702 INFO L495 AbstractCegarLoop]: Abstraction has 45615 states and 64165 transitions. [2023-12-20 02:50:00,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:50:00,703 INFO L276 IsEmpty]: Start isEmpty. Operand 45615 states and 64165 transitions. [2023-12-20 02:50:00,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-20 02:50:00,705 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:50:00,705 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] [2023-12-20 02:50:00,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-20 02:50:00,705 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:50:00,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:50:00,706 INFO L85 PathProgramCache]: Analyzing trace with hash 520253443, now seen corresponding path program 1 times [2023-12-20 02:50:00,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:50:00,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488457321] [2023-12-20 02:50:00,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:50:00,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:50:00,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:50:00,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:50:00,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:50:00,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488457321] [2023-12-20 02:50:00,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488457321] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:50:00,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:50:00,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 02:50:00,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291957450] [2023-12-20 02:50:00,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:50:00,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 02:50:00,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:50:00,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 02:50:00,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-20 02:50:00,894 INFO L87 Difference]: Start difference. First operand 45615 states and 64165 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:50:01,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:50:01,091 INFO L93 Difference]: Finished difference Result 69166 states and 97863 transitions. [2023-12-20 02:50:01,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 02:50:01,092 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2023-12-20 02:50:01,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:50:01,162 INFO L225 Difference]: With dead ends: 69166 [2023-12-20 02:50:01,162 INFO L226 Difference]: Without dead ends: 65177 [2023-12-20 02:50:01,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-20 02:50:01,184 INFO L413 NwaCegarLoop]: 353 mSDtfsCounter, 1111 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1111 SdHoareTripleChecker+Valid, 1215 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:50:01,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1111 Valid, 1215 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:50:01,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65177 states. [2023-12-20 02:50:01,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65177 to 49542. [2023-12-20 02:50:01,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49542 states, 49541 states have (on average 1.4070365959508286) internal successors, (69706), 49541 states have internal predecessors, (69706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:50:01,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49542 states to 49542 states and 69706 transitions. [2023-12-20 02:50:01,901 INFO L78 Accepts]: Start accepts. Automaton has 49542 states and 69706 transitions. Word has length 69 [2023-12-20 02:50:01,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:50:01,901 INFO L495 AbstractCegarLoop]: Abstraction has 49542 states and 69706 transitions. [2023-12-20 02:50:01,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:50:01,902 INFO L276 IsEmpty]: Start isEmpty. Operand 49542 states and 69706 transitions. [2023-12-20 02:50:01,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-20 02:50:01,904 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:50:01,904 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] [2023-12-20 02:50:01,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-20 02:50:01,904 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:50:01,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:50:01,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1252332142, now seen corresponding path program 1 times [2023-12-20 02:50:01,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:50:01,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212389554] [2023-12-20 02:50:01,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:50:01,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:50:01,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:50:01,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:50:01,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:50:01,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212389554] [2023-12-20 02:50:01,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212389554] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:50:01,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:50:01,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 02:50:01,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763529276] [2023-12-20 02:50:01,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:50:01,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 02:50:01,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:50:01,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 02:50:01,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-20 02:50:01,973 INFO L87 Difference]: Start difference. First operand 49542 states and 69706 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:50:02,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:50:02,195 INFO L93 Difference]: Finished difference Result 77828 states and 110163 transitions. [2023-12-20 02:50:02,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 02:50:02,196 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2023-12-20 02:50:02,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:50:02,277 INFO L225 Difference]: With dead ends: 77828 [2023-12-20 02:50:02,277 INFO L226 Difference]: Without dead ends: 69003 [2023-12-20 02:50:02,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-20 02:50:02,303 INFO L413 NwaCegarLoop]: 378 mSDtfsCounter, 1035 mSDsluCounter, 981 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1035 SdHoareTripleChecker+Valid, 1359 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:50:02,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1035 Valid, 1359 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:50:02,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69003 states. [2023-12-20 02:50:03,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69003 to 55125. [2023-12-20 02:50:03,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55125 states, 55124 states have (on average 1.4090232929395545) internal successors, (77671), 55124 states have internal predecessors, (77671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:50:03,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55125 states to 55125 states and 77671 transitions. [2023-12-20 02:50:03,249 INFO L78 Accepts]: Start accepts. Automaton has 55125 states and 77671 transitions. Word has length 69 [2023-12-20 02:50:03,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:50:03,249 INFO L495 AbstractCegarLoop]: Abstraction has 55125 states and 77671 transitions. [2023-12-20 02:50:03,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:50:03,249 INFO L276 IsEmpty]: Start isEmpty. Operand 55125 states and 77671 transitions. [2023-12-20 02:50:03,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-20 02:50:03,252 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:50:03,252 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] [2023-12-20 02:50:03,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-20 02:50:03,252 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:50:03,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:50:03,252 INFO L85 PathProgramCache]: Analyzing trace with hash 662995848, now seen corresponding path program 1 times [2023-12-20 02:50:03,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:50:03,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062028601] [2023-12-20 02:50:03,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:50:03,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:50:03,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:50:03,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:50:03,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:50:03,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062028601] [2023-12-20 02:50:03,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062028601] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:50:03,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:50:03,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 02:50:03,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138786702] [2023-12-20 02:50:03,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:50:03,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 02:50:03,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:50:03,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 02:50:03,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-20 02:50:03,323 INFO L87 Difference]: Start difference. First operand 55125 states and 77671 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:50:03,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:50:03,750 INFO L93 Difference]: Finished difference Result 91887 states and 130211 transitions. [2023-12-20 02:50:03,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 02:50:03,751 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2023-12-20 02:50:03,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:50:03,848 INFO L225 Difference]: With dead ends: 91887 [2023-12-20 02:50:03,848 INFO L226 Difference]: Without dead ends: 79191 [2023-12-20 02:50:03,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-20 02:50:03,877 INFO L413 NwaCegarLoop]: 398 mSDtfsCounter, 1096 mSDsluCounter, 898 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1096 SdHoareTripleChecker+Valid, 1296 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:50:03,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1096 Valid, 1296 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:50:03,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79191 states. [2023-12-20 02:50:04,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79191 to 61426. [2023-12-20 02:50:04,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61426 states, 61425 states have (on average 1.4104680504680505) internal successors, (86638), 61425 states have internal predecessors, (86638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:50:04,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61426 states to 61426 states and 86638 transitions. [2023-12-20 02:50:04,812 INFO L78 Accepts]: Start accepts. Automaton has 61426 states and 86638 transitions. Word has length 69 [2023-12-20 02:50:04,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:50:04,813 INFO L495 AbstractCegarLoop]: Abstraction has 61426 states and 86638 transitions. [2023-12-20 02:50:04,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:50:04,813 INFO L276 IsEmpty]: Start isEmpty. Operand 61426 states and 86638 transitions. [2023-12-20 02:50:04,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-20 02:50:04,817 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:50:04,817 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:50:04,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-20 02:50:04,817 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:50:04,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:50:04,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1615492394, now seen corresponding path program 1 times [2023-12-20 02:50:04,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:50:04,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162673483] [2023-12-20 02:50:04,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:50:04,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:50:04,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:50:05,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:50:05,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:50:05,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162673483] [2023-12-20 02:50:05,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162673483] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:50:05,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:50:05,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 02:50:05,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116592208] [2023-12-20 02:50:05,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:50:05,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 02:50:05,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:50:05,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 02:50:05,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 02:50:05,064 INFO L87 Difference]: Start difference. First operand 61426 states and 86638 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:50:06,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:50:06,187 INFO L93 Difference]: Finished difference Result 246082 states and 344908 transitions. [2023-12-20 02:50:06,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-20 02:50:06,187 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2023-12-20 02:50:06,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:50:06,468 INFO L225 Difference]: With dead ends: 246082 [2023-12-20 02:50:06,468 INFO L226 Difference]: Without dead ends: 223624 [2023-12-20 02:50:06,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2023-12-20 02:50:06,513 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 2976 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2976 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 02:50:06,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2976 Valid, 534 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 02:50:06,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223624 states. [2023-12-20 02:50:08,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223624 to 61530. [2023-12-20 02:50:08,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61530 states, 61529 states have (on average 1.4101155552666222) internal successors, (86763), 61529 states have internal predecessors, (86763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:50:08,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61530 states to 61530 states and 86763 transitions. [2023-12-20 02:50:08,275 INFO L78 Accepts]: Start accepts. Automaton has 61530 states and 86763 transitions. Word has length 74 [2023-12-20 02:50:08,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:50:08,275 INFO L495 AbstractCegarLoop]: Abstraction has 61530 states and 86763 transitions. [2023-12-20 02:50:08,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:50:08,275 INFO L276 IsEmpty]: Start isEmpty. Operand 61530 states and 86763 transitions. [2023-12-20 02:50:08,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-20 02:50:08,279 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:50:08,279 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:50:08,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-20 02:50:08,279 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:50:08,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:50:08,279 INFO L85 PathProgramCache]: Analyzing trace with hash 282958172, now seen corresponding path program 1 times [2023-12-20 02:50:08,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:50:08,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018058550] [2023-12-20 02:50:08,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:50:08,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:50:08,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:50:08,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:50:08,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:50:08,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018058550] [2023-12-20 02:50:08,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018058550] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:50:08,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:50:08,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 02:50:08,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523690870] [2023-12-20 02:50:08,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:50:08,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 02:50:08,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:50:08,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 02:50:08,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 02:50:08,361 INFO L87 Difference]: Start difference. First operand 61530 states and 86763 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:50:09,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:50:09,614 INFO L93 Difference]: Finished difference Result 262556 states and 365969 transitions. [2023-12-20 02:50:09,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-20 02:50:09,616 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2023-12-20 02:50:09,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:50:09,928 INFO L225 Difference]: With dead ends: 262556 [2023-12-20 02:50:09,928 INFO L226 Difference]: Without dead ends: 240121 [2023-12-20 02:50:09,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2023-12-20 02:50:09,978 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 2277 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2277 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 02:50:09,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2277 Valid, 576 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 02:50:10,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240121 states. [2023-12-20 02:50:11,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240121 to 61712. [2023-12-20 02:50:11,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61712 states, 61711 states have (on average 1.409456984978367) internal successors, (86979), 61711 states have internal predecessors, (86979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:50:11,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61712 states to 61712 states and 86979 transitions. [2023-12-20 02:50:11,802 INFO L78 Accepts]: Start accepts. Automaton has 61712 states and 86979 transitions. Word has length 74 [2023-12-20 02:50:11,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:50:11,802 INFO L495 AbstractCegarLoop]: Abstraction has 61712 states and 86979 transitions. [2023-12-20 02:50:11,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:50:11,802 INFO L276 IsEmpty]: Start isEmpty. Operand 61712 states and 86979 transitions. [2023-12-20 02:50:11,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-20 02:50:11,806 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:50:11,806 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:50:11,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-20 02:50:11,806 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:50:11,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:50:11,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1376997652, now seen corresponding path program 1 times [2023-12-20 02:50:11,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:50:11,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109526304] [2023-12-20 02:50:11,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:50:11,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:50:11,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:50:11,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:50:11,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:50:11,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109526304] [2023-12-20 02:50:11,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109526304] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:50:11,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:50:11,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 02:50:11,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66293675] [2023-12-20 02:50:11,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:50:11,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 02:50:11,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:50:11,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 02:50:11,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 02:50:11,896 INFO L87 Difference]: Start difference. First operand 61712 states and 86979 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:50:12,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:50:12,766 INFO L93 Difference]: Finished difference Result 219032 states and 306568 transitions. [2023-12-20 02:50:12,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-20 02:50:12,766 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2023-12-20 02:50:12,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:50:12,988 INFO L225 Difference]: With dead ends: 219032 [2023-12-20 02:50:12,988 INFO L226 Difference]: Without dead ends: 185360 [2023-12-20 02:50:13,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2023-12-20 02:50:13,044 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 2177 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2177 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 02:50:13,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2177 Valid, 435 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 02:50:13,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185360 states. [2023-12-20 02:50:14,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185360 to 61762. [2023-12-20 02:50:14,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61762 states, 61761 states have (on average 1.4092874143877203) internal successors, (87039), 61761 states have internal predecessors, (87039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:50:14,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61762 states to 61762 states and 87039 transitions. [2023-12-20 02:50:14,638 INFO L78 Accepts]: Start accepts. Automaton has 61762 states and 87039 transitions. Word has length 74 [2023-12-20 02:50:14,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:50:14,638 INFO L495 AbstractCegarLoop]: Abstraction has 61762 states and 87039 transitions. [2023-12-20 02:50:14,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:50:14,638 INFO L276 IsEmpty]: Start isEmpty. Operand 61762 states and 87039 transitions. [2023-12-20 02:50:14,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-20 02:50:14,642 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:50:14,642 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:50:14,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-20 02:50:14,643 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:50:14,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:50:14,643 INFO L85 PathProgramCache]: Analyzing trace with hash -760049320, now seen corresponding path program 1 times [2023-12-20 02:50:14,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:50:14,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082596732] [2023-12-20 02:50:14,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:50:14,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:50:14,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:50:14,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:50:14,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:50:14,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082596732] [2023-12-20 02:50:14,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082596732] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:50:14,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:50:14,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 02:50:14,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046078867] [2023-12-20 02:50:14,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:50:14,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 02:50:14,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:50:14,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 02:50:14,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 02:50:14,750 INFO L87 Difference]: Start difference. First operand 61762 states and 87039 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:50:15,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:50:15,726 INFO L93 Difference]: Finished difference Result 222971 states and 310010 transitions. [2023-12-20 02:50:15,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-20 02:50:15,726 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2023-12-20 02:50:15,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:50:16,005 INFO L225 Difference]: With dead ends: 222971 [2023-12-20 02:50:16,006 INFO L226 Difference]: Without dead ends: 211210 [2023-12-20 02:50:16,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2023-12-20 02:50:16,073 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 2306 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2306 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 02:50:16,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2306 Valid, 495 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 02:50:16,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211210 states. [2023-12-20 02:50:17,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211210 to 62060. [2023-12-20 02:50:17,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62060 states, 62059 states have (on average 1.4081116357015098) internal successors, (87386), 62059 states have internal predecessors, (87386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:50:17,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62060 states to 62060 states and 87386 transitions. [2023-12-20 02:50:17,818 INFO L78 Accepts]: Start accepts. Automaton has 62060 states and 87386 transitions. Word has length 74 [2023-12-20 02:50:17,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:50:17,818 INFO L495 AbstractCegarLoop]: Abstraction has 62060 states and 87386 transitions. [2023-12-20 02:50:17,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:50:17,818 INFO L276 IsEmpty]: Start isEmpty. Operand 62060 states and 87386 transitions. [2023-12-20 02:50:17,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-20 02:50:17,822 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:50:17,822 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] [2023-12-20 02:50:17,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-20 02:50:17,823 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:50:17,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:50:17,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1870035016, now seen corresponding path program 1 times [2023-12-20 02:50:17,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:50:17,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666206944] [2023-12-20 02:50:17,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:50:17,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:50:17,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:50:18,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:50:18,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:50:18,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666206944] [2023-12-20 02:50:18,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666206944] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:50:18,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:50:18,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-20 02:50:18,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892230853] [2023-12-20 02:50:18,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:50:18,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-20 02:50:18,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:50:18,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-20 02:50:18,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-12-20 02:50:18,281 INFO L87 Difference]: Start difference. First operand 62060 states and 87386 transitions. Second operand has 13 states, 13 states have (on average 5.846153846153846) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:50:20,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:50:20,177 INFO L93 Difference]: Finished difference Result 270229 states and 380171 transitions. [2023-12-20 02:50:20,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-20 02:50:20,177 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.846153846153846) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2023-12-20 02:50:20,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:50:20,507 INFO L225 Difference]: With dead ends: 270229 [2023-12-20 02:50:20,508 INFO L226 Difference]: Without dead ends: 252612 [2023-12-20 02:50:20,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=229, Invalid=641, Unknown=0, NotChecked=0, Total=870 [2023-12-20 02:50:20,561 INFO L413 NwaCegarLoop]: 415 mSDtfsCounter, 2915 mSDsluCounter, 3842 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2915 SdHoareTripleChecker+Valid, 4257 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 02:50:20,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2915 Valid, 4257 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 02:50:20,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252612 states. [2023-12-20 02:50:22,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252612 to 62010. [2023-12-20 02:50:22,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62010 states, 62009 states have (on average 1.408198809850183) internal successors, (87321), 62009 states have internal predecessors, (87321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:50:22,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62010 states to 62010 states and 87321 transitions. [2023-12-20 02:50:22,228 INFO L78 Accepts]: Start accepts. Automaton has 62010 states and 87321 transitions. Word has length 76 [2023-12-20 02:50:22,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:50:22,228 INFO L495 AbstractCegarLoop]: Abstraction has 62010 states and 87321 transitions. [2023-12-20 02:50:22,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.846153846153846) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:50:22,229 INFO L276 IsEmpty]: Start isEmpty. Operand 62010 states and 87321 transitions. [2023-12-20 02:50:22,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-20 02:50:22,233 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:50:22,233 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:50:22,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-20 02:50:22,234 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:50:22,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:50:22,234 INFO L85 PathProgramCache]: Analyzing trace with hash 484016192, now seen corresponding path program 1 times [2023-12-20 02:50:22,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:50:22,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371355928] [2023-12-20 02:50:22,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:50:22,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:50:22,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:50:22,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:50:22,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:50:22,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371355928] [2023-12-20 02:50:22,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371355928] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:50:22,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:50:22,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-20 02:50:22,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158182739] [2023-12-20 02:50:22,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:50:22,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-20 02:50:22,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:50:22,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-20 02:50:22,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2023-12-20 02:50:22,592 INFO L87 Difference]: Start difference. First operand 62010 states and 87321 transitions. Second operand has 13 states, 13 states have (on average 5.846153846153846) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:50:24,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:50:24,184 INFO L93 Difference]: Finished difference Result 268079 states and 377019 transitions. [2023-12-20 02:50:24,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-20 02:50:24,185 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.846153846153846) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2023-12-20 02:50:24,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:50:24,497 INFO L225 Difference]: With dead ends: 268079 [2023-12-20 02:50:24,497 INFO L226 Difference]: Without dead ends: 242263 [2023-12-20 02:50:24,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=167, Invalid=535, Unknown=0, NotChecked=0, Total=702 [2023-12-20 02:50:24,550 INFO L413 NwaCegarLoop]: 535 mSDtfsCounter, 2386 mSDsluCounter, 2761 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2386 SdHoareTripleChecker+Valid, 3296 SdHoareTripleChecker+Invalid, 552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 02:50:24,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2386 Valid, 3296 Invalid, 552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 02:50:24,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242263 states. [2023-12-20 02:50:26,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242263 to 61846. [2023-12-20 02:50:26,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61846 states, 61845 states have (on average 1.4087153367289191) internal successors, (87122), 61845 states have internal predecessors, (87122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:50:26,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61846 states to 61846 states and 87122 transitions. [2023-12-20 02:50:26,231 INFO L78 Accepts]: Start accepts. Automaton has 61846 states and 87122 transitions. Word has length 76 [2023-12-20 02:50:26,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:50:26,231 INFO L495 AbstractCegarLoop]: Abstraction has 61846 states and 87122 transitions. [2023-12-20 02:50:26,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.846153846153846) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:50:26,231 INFO L276 IsEmpty]: Start isEmpty. Operand 61846 states and 87122 transitions. [2023-12-20 02:50:26,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-20 02:50:26,236 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:50:26,236 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:50:26,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-20 02:50:26,236 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:50:26,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:50:26,236 INFO L85 PathProgramCache]: Analyzing trace with hash 722303076, now seen corresponding path program 1 times [2023-12-20 02:50:26,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:50:26,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500572765] [2023-12-20 02:50:26,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:50:26,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:50:26,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:50:26,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:50:26,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:50:26,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500572765] [2023-12-20 02:50:26,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500572765] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:50:26,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:50:26,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-20 02:50:26,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824538028] [2023-12-20 02:50:26,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:50:26,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-20 02:50:26,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:50:26,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-20 02:50:26,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-12-20 02:50:26,745 INFO L87 Difference]: Start difference. First operand 61846 states and 87122 transitions. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 11 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:50:27,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:50:27,723 INFO L93 Difference]: Finished difference Result 139771 states and 197067 transitions. [2023-12-20 02:50:27,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 02:50:27,723 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 11 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2023-12-20 02:50:27,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:50:28,030 INFO L225 Difference]: With dead ends: 139771 [2023-12-20 02:50:28,031 INFO L226 Difference]: Without dead ends: 133572 [2023-12-20 02:50:28,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=146, Invalid=360, Unknown=0, NotChecked=0, Total=506 [2023-12-20 02:50:28,057 INFO L413 NwaCegarLoop]: 475 mSDtfsCounter, 2110 mSDsluCounter, 2227 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2110 SdHoareTripleChecker+Valid, 2702 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 02:50:28,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2110 Valid, 2702 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 02:50:28,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133572 states. [2023-12-20 02:50:29,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133572 to 61195. [2023-12-20 02:50:29,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61195 states, 61194 states have (on average 1.4092558093930778) internal successors, (86238), 61194 states have internal predecessors, (86238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:50:29,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61195 states to 61195 states and 86238 transitions. [2023-12-20 02:50:29,138 INFO L78 Accepts]: Start accepts. Automaton has 61195 states and 86238 transitions. Word has length 76 [2023-12-20 02:50:29,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:50:29,138 INFO L495 AbstractCegarLoop]: Abstraction has 61195 states and 86238 transitions. [2023-12-20 02:50:29,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 11 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:50:29,138 INFO L276 IsEmpty]: Start isEmpty. Operand 61195 states and 86238 transitions. [2023-12-20 02:50:29,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-20 02:50:29,142 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:50:29,142 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:50:29,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-20 02:50:29,142 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:50:29,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:50:29,143 INFO L85 PathProgramCache]: Analyzing trace with hash -939883937, now seen corresponding path program 1 times [2023-12-20 02:50:29,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:50:29,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632669320] [2023-12-20 02:50:29,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:50:29,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:50:29,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:50:29,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:50:29,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:50:29,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632669320] [2023-12-20 02:50:29,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632669320] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:50:29,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:50:29,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 02:50:29,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587219085] [2023-12-20 02:50:29,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:50:29,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 02:50:29,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:50:29,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 02:50:29,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:50:29,168 INFO L87 Difference]: Start difference. First operand 61195 states and 86238 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:50:29,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:50:29,484 INFO L93 Difference]: Finished difference Result 136708 states and 192793 transitions. [2023-12-20 02:50:29,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 02:50:29,484 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2023-12-20 02:50:29,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:50:29,604 INFO L225 Difference]: With dead ends: 136708 [2023-12-20 02:50:29,604 INFO L226 Difference]: Without dead ends: 97228 [2023-12-20 02:50:29,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:50:29,651 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 196 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:50:29,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 374 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:50:29,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97228 states. [2023-12-20 02:50:30,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97228 to 96864. [2023-12-20 02:50:30,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96864 states, 96863 states have (on average 1.4118910213394176) internal successors, (136760), 96863 states have internal predecessors, (136760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:50:31,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96864 states to 96864 states and 136760 transitions. [2023-12-20 02:50:31,152 INFO L78 Accepts]: Start accepts. Automaton has 96864 states and 136760 transitions. Word has length 77 [2023-12-20 02:50:31,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:50:31,153 INFO L495 AbstractCegarLoop]: Abstraction has 96864 states and 136760 transitions. [2023-12-20 02:50:31,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:50:31,153 INFO L276 IsEmpty]: Start isEmpty. Operand 96864 states and 136760 transitions. [2023-12-20 02:50:31,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-20 02:50:31,160 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:50:31,160 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:50:31,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-20 02:50:31,160 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:50:31,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:50:31,160 INFO L85 PathProgramCache]: Analyzing trace with hash 2065094276, now seen corresponding path program 1 times [2023-12-20 02:50:31,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:50:31,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854573435] [2023-12-20 02:50:31,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:50:31,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:50:31,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:50:31,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:50:31,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:50:31,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854573435] [2023-12-20 02:50:31,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854573435] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:50:31,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:50:31,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 02:50:31,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462886719] [2023-12-20 02:50:31,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:50:31,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 02:50:31,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:50:31,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 02:50:31,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:50:31,203 INFO L87 Difference]: Start difference. First operand 96864 states and 136760 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:50:31,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:50:31,570 INFO L93 Difference]: Finished difference Result 176693 states and 248869 transitions. [2023-12-20 02:50:31,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 02:50:31,570 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2023-12-20 02:50:31,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:50:31,729 INFO L225 Difference]: With dead ends: 176693 [2023-12-20 02:50:31,729 INFO L226 Difference]: Without dead ends: 131816 [2023-12-20 02:50:31,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:50:31,786 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 187 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:50:31,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 361 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:50:31,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131816 states. [2023-12-20 02:50:33,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131816 to 131581. [2023-12-20 02:50:33,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131581 states, 131580 states have (on average 1.4091503267973857) internal successors, (185416), 131580 states have internal predecessors, (185416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:50:33,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131581 states to 131581 states and 185416 transitions. [2023-12-20 02:50:33,596 INFO L78 Accepts]: Start accepts. Automaton has 131581 states and 185416 transitions. Word has length 80 [2023-12-20 02:50:33,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:50:33,596 INFO L495 AbstractCegarLoop]: Abstraction has 131581 states and 185416 transitions. [2023-12-20 02:50:33,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:50:33,596 INFO L276 IsEmpty]: Start isEmpty. Operand 131581 states and 185416 transitions. [2023-12-20 02:50:33,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-20 02:50:33,617 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:50:33,618 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:50:33,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-20 02:50:33,618 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:50:33,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:50:33,619 INFO L85 PathProgramCache]: Analyzing trace with hash -639780682, now seen corresponding path program 1 times [2023-12-20 02:50:33,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:50:33,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169131577] [2023-12-20 02:50:33,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:50:33,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:50:33,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:50:33,969 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:50:33,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:50:33,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169131577] [2023-12-20 02:50:33,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169131577] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:50:33,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:50:33,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 02:50:33,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987397175] [2023-12-20 02:50:33,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:50:33,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 02:50:33,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:50:33,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 02:50:33,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:50:33,971 INFO L87 Difference]: Start difference. First operand 131581 states and 185416 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 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) [2023-12-20 02:50:34,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:50:34,886 INFO L93 Difference]: Finished difference Result 277014 states and 392891 transitions. [2023-12-20 02:50:34,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 02:50:34,886 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 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 [2023-12-20 02:50:34,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:50:35,189 INFO L225 Difference]: With dead ends: 277014 [2023-12-20 02:50:35,189 INFO L226 Difference]: Without dead ends: 200948 [2023-12-20 02:50:35,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:50:35,248 INFO L413 NwaCegarLoop]: 319 mSDtfsCounter, 125 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:50:35,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 515 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:50:35,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200948 states. [2023-12-20 02:50:37,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200948 to 191626. [2023-12-20 02:50:37,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191626 states, 191625 states have (on average 1.4056777560339204) internal successors, (269363), 191625 states have internal predecessors, (269363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:50:37,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191626 states to 191626 states and 269363 transitions. [2023-12-20 02:50:37,596 INFO L78 Accepts]: Start accepts. Automaton has 191626 states and 269363 transitions. Word has length 90 [2023-12-20 02:50:37,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:50:37,597 INFO L495 AbstractCegarLoop]: Abstraction has 191626 states and 269363 transitions. [2023-12-20 02:50:37,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 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) [2023-12-20 02:50:37,597 INFO L276 IsEmpty]: Start isEmpty. Operand 191626 states and 269363 transitions. [2023-12-20 02:50:37,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-20 02:50:37,614 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:50:37,614 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:50:37,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-20 02:50:37,614 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:50:37,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:50:37,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1063442888, now seen corresponding path program 1 times [2023-12-20 02:50:37,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:50:37,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717251392] [2023-12-20 02:50:37,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:50:37,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:50:37,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:50:37,684 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:50:37,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:50:37,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717251392] [2023-12-20 02:50:37,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717251392] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:50:37,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:50:37,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 02:50:37,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198159355] [2023-12-20 02:50:37,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:50:37,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 02:50:37,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:50:37,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 02:50:37,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 02:50:37,685 INFO L87 Difference]: Start difference. First operand 191626 states and 269363 transitions. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:50:40,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:50:40,450 INFO L93 Difference]: Finished difference Result 777563 states and 1089530 transitions. [2023-12-20 02:50:40,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-20 02:50:40,450 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2023-12-20 02:50:40,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:50:41,524 INFO L225 Difference]: With dead ends: 777563 [2023-12-20 02:50:41,524 INFO L226 Difference]: Without dead ends: 652439 [2023-12-20 02:50:41,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2023-12-20 02:50:41,965 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 2323 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2323 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 02:50:41,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2323 Valid, 481 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 02:50:42,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652439 states. [2023-12-20 02:50:46,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652439 to 256313. [2023-12-20 02:50:46,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256313 states, 256312 states have (on average 1.4172492899279003) internal successors, (363258), 256312 states have internal predecessors, (363258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:50:47,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256313 states to 256313 states and 363258 transitions. [2023-12-20 02:50:47,155 INFO L78 Accepts]: Start accepts. Automaton has 256313 states and 363258 transitions. Word has length 95 [2023-12-20 02:50:47,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:50:47,155 INFO L495 AbstractCegarLoop]: Abstraction has 256313 states and 363258 transitions. [2023-12-20 02:50:47,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:50:47,155 INFO L276 IsEmpty]: Start isEmpty. Operand 256313 states and 363258 transitions. [2023-12-20 02:50:47,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-20 02:50:47,172 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:50:47,172 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:50:47,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-12-20 02:50:47,172 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:50:47,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:50:47,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1425466717, now seen corresponding path program 1 times [2023-12-20 02:50:47,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:50:47,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463025644] [2023-12-20 02:50:47,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:50:47,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:50:47,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:50:47,238 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:50:47,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:50:47,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463025644] [2023-12-20 02:50:47,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463025644] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:50:47,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:50:47,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 02:50:47,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56726345] [2023-12-20 02:50:47,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:50:47,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 02:50:47,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:50:47,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 02:50:47,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 02:50:47,240 INFO L87 Difference]: Start difference. First operand 256313 states and 363258 transitions. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:50:49,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:50:49,905 INFO L93 Difference]: Finished difference Result 679477 states and 957082 transitions. [2023-12-20 02:50:49,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-20 02:50:49,905 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2023-12-20 02:50:49,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:50:50,657 INFO L225 Difference]: With dead ends: 679477 [2023-12-20 02:50:50,657 INFO L226 Difference]: Without dead ends: 470011 [2023-12-20 02:50:50,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2023-12-20 02:50:50,792 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 2612 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2612 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 02:50:50,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2612 Valid, 471 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 02:50:51,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470011 states. [2023-12-20 02:50:54,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470011 to 268091. [2023-12-20 02:50:54,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268091 states, 268090 states have (on average 1.416569062628222) internal successors, (379768), 268090 states have internal predecessors, (379768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:50:55,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268091 states to 268091 states and 379768 transitions. [2023-12-20 02:50:55,664 INFO L78 Accepts]: Start accepts. Automaton has 268091 states and 379768 transitions. Word has length 96 [2023-12-20 02:50:55,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:50:55,664 INFO L495 AbstractCegarLoop]: Abstraction has 268091 states and 379768 transitions. [2023-12-20 02:50:55,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:50:55,664 INFO L276 IsEmpty]: Start isEmpty. Operand 268091 states and 379768 transitions. [2023-12-20 02:50:55,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-20 02:50:55,707 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:50:55,707 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:50:55,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-12-20 02:50:55,708 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:50:55,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:50:55,708 INFO L85 PathProgramCache]: Analyzing trace with hash -702734181, now seen corresponding path program 1 times [2023-12-20 02:50:55,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:50:55,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235347375] [2023-12-20 02:50:55,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:50:55,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:50:55,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:50:55,768 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-20 02:50:55,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:50:55,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235347375] [2023-12-20 02:50:55,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235347375] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:50:55,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:50:55,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 02:50:55,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263740780] [2023-12-20 02:50:55,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:50:55,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 02:50:55,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:50:55,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 02:50:55,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:50:55,769 INFO L87 Difference]: Start difference. First operand 268091 states and 379768 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:50:57,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:50:57,801 INFO L93 Difference]: Finished difference Result 650812 states and 915586 transitions. [2023-12-20 02:50:57,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 02:50:57,802 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2023-12-20 02:50:57,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:50:58,360 INFO L225 Difference]: With dead ends: 650812 [2023-12-20 02:50:58,360 INFO L226 Difference]: Without dead ends: 385547 [2023-12-20 02:50:58,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:50:58,463 INFO L413 NwaCegarLoop]: 299 mSDtfsCounter, 117 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:50:58,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 504 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:50:59,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385547 states. [2023-12-20 02:51:02,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385547 to 360516. [2023-12-20 02:51:03,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360516 states, 360515 states have (on average 1.392760356711926) internal successors, (502111), 360515 states have internal predecessors, (502111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:51:03,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360516 states to 360516 states and 502111 transitions. [2023-12-20 02:51:03,907 INFO L78 Accepts]: Start accepts. Automaton has 360516 states and 502111 transitions. Word has length 111 [2023-12-20 02:51:03,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:51:03,907 INFO L495 AbstractCegarLoop]: Abstraction has 360516 states and 502111 transitions. [2023-12-20 02:51:03,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:51:03,907 INFO L276 IsEmpty]: Start isEmpty. Operand 360516 states and 502111 transitions. [2023-12-20 02:51:03,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-20 02:51:03,948 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:51:03,948 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:51:03,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-12-20 02:51:03,948 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:51:03,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:51:03,949 INFO L85 PathProgramCache]: Analyzing trace with hash -706448717, now seen corresponding path program 1 times [2023-12-20 02:51:03,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:51:03,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59259689] [2023-12-20 02:51:03,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:51:03,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:51:03,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:51:04,338 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-20 02:51:04,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:51:04,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59259689] [2023-12-20 02:51:04,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59259689] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:51:04,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:51:04,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 02:51:04,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317075364] [2023-12-20 02:51:04,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:51:04,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 02:51:04,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:51:04,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 02:51:04,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:51:04,340 INFO L87 Difference]: Start difference. First operand 360516 states and 502111 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:51:05,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:51:05,701 INFO L93 Difference]: Finished difference Result 449875 states and 625442 transitions. [2023-12-20 02:51:05,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 02:51:05,702 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2023-12-20 02:51:05,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:51:06,085 INFO L225 Difference]: With dead ends: 449875 [2023-12-20 02:51:06,085 INFO L226 Difference]: Without dead ends: 265412 [2023-12-20 02:51:06,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:51:06,164 INFO L413 NwaCegarLoop]: 359 mSDtfsCounter, 144 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 567 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 [2023-12-20 02:51:06,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 567 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:51:06,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265412 states. [2023-12-20 02:51:08,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265412 to 184410. [2023-12-20 02:51:08,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184410 states, 184409 states have (on average 1.3772321307528375) internal successors, (253974), 184409 states have internal predecessors, (253974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:51:09,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184410 states to 184410 states and 253974 transitions. [2023-12-20 02:51:09,042 INFO L78 Accepts]: Start accepts. Automaton has 184410 states and 253974 transitions. Word has length 112 [2023-12-20 02:51:09,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:51:09,043 INFO L495 AbstractCegarLoop]: Abstraction has 184410 states and 253974 transitions. [2023-12-20 02:51:09,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:51:09,043 INFO L276 IsEmpty]: Start isEmpty. Operand 184410 states and 253974 transitions. [2023-12-20 02:51:09,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-20 02:51:09,073 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:51:09,073 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:51:09,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-12-20 02:51:09,073 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:51:09,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:51:09,074 INFO L85 PathProgramCache]: Analyzing trace with hash -852203747, now seen corresponding path program 1 times [2023-12-20 02:51:09,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:51:09,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672703839] [2023-12-20 02:51:09,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:51:09,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:51:09,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:51:09,134 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-20 02:51:09,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:51:09,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672703839] [2023-12-20 02:51:09,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672703839] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:51:09,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:51:09,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 02:51:09,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244652861] [2023-12-20 02:51:09,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:51:09,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 02:51:09,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:51:09,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 02:51:09,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:51:09,135 INFO L87 Difference]: Start difference. First operand 184410 states and 253974 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:51:10,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:51:10,950 INFO L93 Difference]: Finished difference Result 527960 states and 725002 transitions. [2023-12-20 02:51:10,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 02:51:10,950 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2023-12-20 02:51:10,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:51:11,462 INFO L225 Difference]: With dead ends: 527960 [2023-12-20 02:51:11,463 INFO L226 Difference]: Without dead ends: 345298 [2023-12-20 02:51:11,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:51:11,557 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 107 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:51:11,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 496 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:51:11,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345298 states. [2023-12-20 02:51:14,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345298 to 309045. [2023-12-20 02:51:14,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309045 states, 309044 states have (on average 1.3608806512988443) internal successors, (420572), 309044 states have internal predecessors, (420572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:51:15,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309045 states to 309045 states and 420572 transitions. [2023-12-20 02:51:15,722 INFO L78 Accepts]: Start accepts. Automaton has 309045 states and 420572 transitions. Word has length 112 [2023-12-20 02:51:15,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:51:15,722 INFO L495 AbstractCegarLoop]: Abstraction has 309045 states and 420572 transitions. [2023-12-20 02:51:15,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:51:15,722 INFO L276 IsEmpty]: Start isEmpty. Operand 309045 states and 420572 transitions. [2023-12-20 02:51:15,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-20 02:51:15,748 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:51:15,748 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:51:15,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-12-20 02:51:15,748 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:51:15,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:51:15,749 INFO L85 PathProgramCache]: Analyzing trace with hash 573392032, now seen corresponding path program 1 times [2023-12-20 02:51:15,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:51:15,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795517271] [2023-12-20 02:51:15,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:51:15,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:51:15,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:51:15,803 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-20 02:51:15,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:51:15,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795517271] [2023-12-20 02:51:15,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795517271] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:51:15,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:51:15,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 02:51:15,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88350313] [2023-12-20 02:51:15,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:51:15,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 02:51:15,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:51:15,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 02:51:15,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:51:15,804 INFO L87 Difference]: Start difference. First operand 309045 states and 420572 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:51:18,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:51:18,790 INFO L93 Difference]: Finished difference Result 842123 states and 1145276 transitions. [2023-12-20 02:51:18,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 02:51:18,790 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2023-12-20 02:51:18,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:51:20,082 INFO L225 Difference]: With dead ends: 842123 [2023-12-20 02:51:20,082 INFO L226 Difference]: Without dead ends: 505624 [2023-12-20 02:51:20,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:51:20,294 INFO L413 NwaCegarLoop]: 264 mSDtfsCounter, 95 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:51:20,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 488 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:51:20,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505624 states. [2023-12-20 02:51:25,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505624 to 453564. [2023-12-20 02:51:25,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453564 states, 453563 states have (on average 1.3509677817635037) internal successors, (612749), 453563 states have internal predecessors, (612749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:51:26,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453564 states to 453564 states and 612749 transitions. [2023-12-20 02:51:26,897 INFO L78 Accepts]: Start accepts. Automaton has 453564 states and 612749 transitions. Word has length 113 [2023-12-20 02:51:26,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:51:26,897 INFO L495 AbstractCegarLoop]: Abstraction has 453564 states and 612749 transitions. [2023-12-20 02:51:26,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:51:26,897 INFO L276 IsEmpty]: Start isEmpty. Operand 453564 states and 612749 transitions. [2023-12-20 02:51:26,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-20 02:51:26,925 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:51:26,925 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:51:26,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-12-20 02:51:26,926 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:51:26,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:51:26,926 INFO L85 PathProgramCache]: Analyzing trace with hash 196008926, now seen corresponding path program 1 times [2023-12-20 02:51:26,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:51:26,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007524583] [2023-12-20 02:51:26,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:51:26,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:51:26,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:51:27,391 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:51:27,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:51:27,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007524583] [2023-12-20 02:51:27,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007524583] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 02:51:27,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238437980] [2023-12-20 02:51:27,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:51:27,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 02:51:27,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 02:51:27,396 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 02:51:27,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 02:51:27,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:51:27,561 INFO L262 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-20 02:51:27,568 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 02:51:28,338 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:51:28,338 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 02:51:29,175 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:51:29,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [238437980] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 02:51:29,176 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 02:51:29,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13, 13] total 31 [2023-12-20 02:51:29,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87829922] [2023-12-20 02:51:29,176 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 02:51:29,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-20 02:51:29,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:51:29,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-20 02:51:29,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=878, Unknown=0, NotChecked=0, Total=992 [2023-12-20 02:51:29,177 INFO L87 Difference]: Start difference. First operand 453564 states and 612749 transitions. Second operand has 32 states, 32 states have (on average 9.78125) internal successors, (313), 31 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:52:05,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:52:05,466 INFO L93 Difference]: Finished difference Result 4597264 states and 6089802 transitions. [2023-12-20 02:52:05,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 283 states. [2023-12-20 02:52:05,467 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 9.78125) internal successors, (313), 31 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2023-12-20 02:52:05,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:52:17,504 INFO L225 Difference]: With dead ends: 4597264 [2023-12-20 02:52:17,504 INFO L226 Difference]: Without dead ends: 4385175 [2023-12-20 02:52:18,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 519 GetRequests, 207 SyntacticMatches, 1 SemanticMatches, 311 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42342 ImplicationChecksByTransitivity, 14.2s TimeCoverageRelationStatistics Valid=15321, Invalid=82335, Unknown=0, NotChecked=0, Total=97656 [2023-12-20 02:52:18,293 INFO L413 NwaCegarLoop]: 696 mSDtfsCounter, 14645 mSDsluCounter, 12603 mSDsCounter, 0 mSdLazyCounter, 10896 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14645 SdHoareTripleChecker+Valid, 13299 SdHoareTripleChecker+Invalid, 11016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 10896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2023-12-20 02:52:18,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14645 Valid, 13299 Invalid, 11016 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [120 Valid, 10896 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2023-12-20 02:52:22,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4385175 states.