/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/eca-rers2012/Problem03_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 01:51:45,844 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 01:51:45,919 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 01:51:45,923 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 01:51:45,924 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 01:51:45,946 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 01:51:45,946 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 01:51:45,947 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 01:51:45,947 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 01:51:45,951 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 01:51:45,951 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 01:51:45,951 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 01:51:45,952 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 01:51:45,952 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 01:51:45,952 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 01:51:45,952 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 01:51:45,953 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 01:51:45,953 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 01:51:45,953 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 01:51:45,953 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 01:51:45,953 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 01:51:45,962 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 01:51:45,962 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 01:51:45,962 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 01:51:45,962 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 01:51:45,963 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 01:51:45,963 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 01:51:45,963 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 01:51:45,963 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 01:51:45,963 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 01:51:45,963 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 01:51:45,964 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 01:51:45,964 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 01:51:45,964 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 01:51:45,965 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 01:51:45,965 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 01:51:45,965 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 01:51:45,966 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 01:51:45,966 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 01:51:45,966 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 01:51:45,966 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 01:51:45,966 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 01:51:45,967 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 01:51:45,967 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 01:51:46,211 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 01:51:46,241 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 01:51:46,243 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 01:51:46,244 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 01:51:46,245 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 01:51:46,245 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label05.c [2023-12-19 01:51:47,436 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 01:51:47,773 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 01:51:47,773 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label05.c [2023-12-19 01:51:47,786 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfd97c1f3/e0fcdc1a1a0647ecbb06922c7d146311/FLAG303af19a3 [2023-12-19 01:51:47,796 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfd97c1f3/e0fcdc1a1a0647ecbb06922c7d146311 [2023-12-19 01:51:47,798 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 01:51:47,799 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 01:51:47,800 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 01:51:47,800 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 01:51:47,803 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 01:51:47,803 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 01:51:47" (1/1) ... [2023-12-19 01:51:47,804 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5533781e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:51:47, skipping insertion in model container [2023-12-19 01:51:47,804 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 01:51:47" (1/1) ... [2023-12-19 01:51:47,844 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 01:51:48,201 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label05.c[55544,55557] [2023-12-19 01:51:48,264 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 01:51:48,274 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 01:51:48,410 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label05.c[55544,55557] [2023-12-19 01:51:48,426 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 01:51:48,439 INFO L206 MainTranslator]: Completed translation [2023-12-19 01:51:48,439 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:51:48 WrapperNode [2023-12-19 01:51:48,440 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 01:51:48,441 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 01:51:48,441 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 01:51:48,441 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 01:51:48,446 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:51:48" (1/1) ... [2023-12-19 01:51:48,475 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:51:48" (1/1) ... [2023-12-19 01:51:48,549 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1772 [2023-12-19 01:51:48,550 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 01:51:48,551 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 01:51:48,551 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 01:51:48,551 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 01:51:48,558 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:51:48" (1/1) ... [2023-12-19 01:51:48,559 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:51:48" (1/1) ... [2023-12-19 01:51:48,566 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:51:48" (1/1) ... [2023-12-19 01:51:48,603 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]. [2023-12-19 01:51:48,603 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:51:48" (1/1) ... [2023-12-19 01:51:48,603 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:51:48" (1/1) ... [2023-12-19 01:51:48,635 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:51:48" (1/1) ... [2023-12-19 01:51:48,650 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:51:48" (1/1) ... [2023-12-19 01:51:48,663 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:51:48" (1/1) ... [2023-12-19 01:51:48,669 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:51:48" (1/1) ... [2023-12-19 01:51:48,679 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 01:51:48,681 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 01:51:48,681 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 01:51:48,681 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 01:51:48,681 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:51:48" (1/1) ... [2023-12-19 01:51:48,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 01:51:48,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:51:48,722 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) [2023-12-19 01:51:48,783 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 [2023-12-19 01:51:48,791 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 01:51:48,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 01:51:48,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 01:51:48,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 01:51:48,853 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 01:51:48,854 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 01:51:50,135 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 01:51:50,166 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 01:51:50,167 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 01:51:50,167 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 01:51:50 BoogieIcfgContainer [2023-12-19 01:51:50,167 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 01:51:50,169 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 01:51:50,169 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 01:51:50,171 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 01:51:50,171 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 01:51:47" (1/3) ... [2023-12-19 01:51:50,172 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3890326d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 01:51:50, skipping insertion in model container [2023-12-19 01:51:50,172 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:51:48" (2/3) ... [2023-12-19 01:51:50,172 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3890326d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 01:51:50, skipping insertion in model container [2023-12-19 01:51:50,172 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 01:51:50" (3/3) ... [2023-12-19 01:51:50,173 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label05.c [2023-12-19 01:51:50,185 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 01:51:50,185 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 01:51:50,219 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 01:51:50,223 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;@692c6c04, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 01:51:50,224 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 01:51:50,228 INFO L276 IsEmpty]: Start isEmpty. Operand has 240 states, 238 states have (on average 1.9201680672268908) internal successors, (457), 239 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:51:50,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-19 01:51:50,237 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:51:50,238 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:51:50,238 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:51:50,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:51:50,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1243830075, now seen corresponding path program 1 times [2023-12-19 01:51:50,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:51:50,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959056178] [2023-12-19 01:51:50,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:51:50,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:51:50,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:51:50,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:51:50,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:51:50,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959056178] [2023-12-19 01:51:50,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959056178] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:51:50,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:51:50,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 01:51:50,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389183822] [2023-12-19 01:51:50,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:51:50,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 01:51:50,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:51:50,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 01:51:50,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 01:51:50,625 INFO L87 Difference]: Start difference. First operand has 240 states, 238 states have (on average 1.9201680672268908) internal successors, (457), 239 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 78.5) internal successors, (157), 2 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:51:50,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:51:50,654 INFO L93 Difference]: Finished difference Result 479 states and 913 transitions. [2023-12-19 01:51:50,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 01:51:50,656 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 78.5) internal successors, (157), 2 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 157 [2023-12-19 01:51:50,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:51:50,664 INFO L225 Difference]: With dead ends: 479 [2023-12-19 01:51:50,664 INFO L226 Difference]: Without dead ends: 238 [2023-12-19 01:51:50,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 01:51:50,668 INFO L413 NwaCegarLoop]: 392 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:51:50,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 392 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:51:50,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2023-12-19 01:51:50,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2023-12-19 01:51:50,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 237 states have (on average 1.6540084388185654) internal successors, (392), 237 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:51:50,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 392 transitions. [2023-12-19 01:51:50,699 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 392 transitions. Word has length 157 [2023-12-19 01:51:50,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:51:50,700 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 392 transitions. [2023-12-19 01:51:50,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 78.5) internal successors, (157), 2 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:51:50,700 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 392 transitions. [2023-12-19 01:51:50,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-19 01:51:50,702 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:51:50,702 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:51:50,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-19 01:51:50,702 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:51:50,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:51:50,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1975721656, now seen corresponding path program 1 times [2023-12-19 01:51:50,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:51:50,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451153229] [2023-12-19 01:51:50,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:51:50,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:51:50,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:51:50,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:51:50,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:51:50,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451153229] [2023-12-19 01:51:50,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451153229] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:51:50,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:51:50,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 01:51:50,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67921821] [2023-12-19 01:51:50,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:51:50,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:51:50,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:51:50,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:51:50,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:51:50,898 INFO L87 Difference]: Start difference. First operand 238 states and 392 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 2 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:51:51,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:51:51,709 INFO L93 Difference]: Finished difference Result 699 states and 1160 transitions. [2023-12-19 01:51:51,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:51:51,710 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 2 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 157 [2023-12-19 01:51:51,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:51:51,717 INFO L225 Difference]: With dead ends: 699 [2023-12-19 01:51:51,717 INFO L226 Difference]: Without dead ends: 462 [2023-12-19 01:51:51,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:51:51,722 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 99 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 01:51:51,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 90 Invalid, 780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 01:51:51,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2023-12-19 01:51:51,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 448. [2023-12-19 01:51:51,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 447 states have (on average 1.6196868008948546) internal successors, (724), 447 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:51:51,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 724 transitions. [2023-12-19 01:51:51,754 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 724 transitions. Word has length 157 [2023-12-19 01:51:51,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:51:51,755 INFO L495 AbstractCegarLoop]: Abstraction has 448 states and 724 transitions. [2023-12-19 01:51:51,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 2 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:51:51,755 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 724 transitions. [2023-12-19 01:51:51,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-19 01:51:51,757 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:51:51,757 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:51:51,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-19 01:51:51,758 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:51:51,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:51:51,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1176943884, now seen corresponding path program 1 times [2023-12-19 01:51:51,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:51:51,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853593432] [2023-12-19 01:51:51,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:51:51,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:51:51,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:51:52,143 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:51:52,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:51:52,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853593432] [2023-12-19 01:51:52,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853593432] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:51:52,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:51:52,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 01:51:52,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590337858] [2023-12-19 01:51:52,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:51:52,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:51:52,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:51:52,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:51:52,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:51:52,146 INFO L87 Difference]: Start difference. First operand 448 states and 724 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 2 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:51:52,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:51:52,769 INFO L93 Difference]: Finished difference Result 1318 states and 2137 transitions. [2023-12-19 01:51:52,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:51:52,773 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 2 states have internal predecessors, (162), 0 states have call successors, (0), 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 162 [2023-12-19 01:51:52,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:51:52,782 INFO L225 Difference]: With dead ends: 1318 [2023-12-19 01:51:52,783 INFO L226 Difference]: Without dead ends: 871 [2023-12-19 01:51:52,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:51:52,788 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 249 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 602 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 01:51:52,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 148 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 602 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 01:51:52,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2023-12-19 01:51:52,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 869. [2023-12-19 01:51:52,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 869 states, 868 states have (on average 1.512672811059908) internal successors, (1313), 868 states have internal predecessors, (1313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:51:52,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 869 states to 869 states and 1313 transitions. [2023-12-19 01:51:52,859 INFO L78 Accepts]: Start accepts. Automaton has 869 states and 1313 transitions. Word has length 162 [2023-12-19 01:51:52,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:51:52,863 INFO L495 AbstractCegarLoop]: Abstraction has 869 states and 1313 transitions. [2023-12-19 01:51:52,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 2 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:51:52,872 INFO L276 IsEmpty]: Start isEmpty. Operand 869 states and 1313 transitions. [2023-12-19 01:51:52,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-12-19 01:51:52,875 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:51:52,876 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:51:52,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-19 01:51:52,876 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:51:52,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:51:52,876 INFO L85 PathProgramCache]: Analyzing trace with hash -666682626, now seen corresponding path program 1 times [2023-12-19 01:51:52,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:51:52,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189631286] [2023-12-19 01:51:52,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:51:52,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:51:52,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:51:53,271 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-19 01:51:53,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:51:53,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189631286] [2023-12-19 01:51:53,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189631286] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:51:53,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:51:53,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:51:53,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053224935] [2023-12-19 01:51:53,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:51:53,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:51:53,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:51:53,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:51:53,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:51:53,275 INFO L87 Difference]: Start difference. First operand 869 states and 1313 transitions. Second operand has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:51:53,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:51:53,961 INFO L93 Difference]: Finished difference Result 2553 states and 3868 transitions. [2023-12-19 01:51:53,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:51:53,962 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 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 177 [2023-12-19 01:51:53,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:51:53,968 INFO L225 Difference]: With dead ends: 2553 [2023-12-19 01:51:53,968 INFO L226 Difference]: Without dead ends: 1685 [2023-12-19 01:51:53,981 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 [2023-12-19 01:51:53,982 INFO L413 NwaCegarLoop]: 386 mSDtfsCounter, 233 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 01:51:53,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 413 Invalid, 701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 01:51:53,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1685 states. [2023-12-19 01:51:54,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1685 to 1683. [2023-12-19 01:51:54,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1683 states, 1682 states have (on average 1.3370986920332937) internal successors, (2249), 1682 states have internal predecessors, (2249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:51:54,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1683 states to 1683 states and 2249 transitions. [2023-12-19 01:51:54,033 INFO L78 Accepts]: Start accepts. Automaton has 1683 states and 2249 transitions. Word has length 177 [2023-12-19 01:51:54,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:51:54,033 INFO L495 AbstractCegarLoop]: Abstraction has 1683 states and 2249 transitions. [2023-12-19 01:51:54,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:51:54,034 INFO L276 IsEmpty]: Start isEmpty. Operand 1683 states and 2249 transitions. [2023-12-19 01:51:54,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2023-12-19 01:51:54,050 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:51:54,050 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:51:54,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-19 01:51:54,051 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:51:54,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:51:54,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1844237151, now seen corresponding path program 1 times [2023-12-19 01:51:54,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:51:54,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226012525] [2023-12-19 01:51:54,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:51:54,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:51:54,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:51:54,490 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:51:54,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:51:54,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226012525] [2023-12-19 01:51:54,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226012525] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:51:54,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:51:54,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 01:51:54,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635061971] [2023-12-19 01:51:54,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:51:54,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:51:54,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:51:54,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:51:54,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:51:54,493 INFO L87 Difference]: Start difference. First operand 1683 states and 2249 transitions. Second operand has 3 states, 3 states have (on average 60.0) internal successors, (180), 2 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:51:55,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:51:55,048 INFO L93 Difference]: Finished difference Result 5016 states and 6709 transitions. [2023-12-19 01:51:55,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:51:55,049 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 2 states have internal predecessors, (180), 0 states have call successors, (0), 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 180 [2023-12-19 01:51:55,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:51:55,058 INFO L225 Difference]: With dead ends: 5016 [2023-12-19 01:51:55,058 INFO L226 Difference]: Without dead ends: 3334 [2023-12-19 01:51:55,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:51:55,077 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 259 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 691 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 01:51:55,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 121 Invalid, 710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 691 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 01:51:55,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3334 states. [2023-12-19 01:51:55,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3334 to 3325. [2023-12-19 01:51:55,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3325 states, 3324 states have (on average 1.3237063778580025) internal successors, (4400), 3324 states have internal predecessors, (4400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:51:55,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3325 states to 3325 states and 4400 transitions. [2023-12-19 01:51:55,163 INFO L78 Accepts]: Start accepts. Automaton has 3325 states and 4400 transitions. Word has length 180 [2023-12-19 01:51:55,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:51:55,176 INFO L495 AbstractCegarLoop]: Abstraction has 3325 states and 4400 transitions. [2023-12-19 01:51:55,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 2 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:51:55,177 INFO L276 IsEmpty]: Start isEmpty. Operand 3325 states and 4400 transitions. [2023-12-19 01:51:55,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2023-12-19 01:51:55,183 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:51:55,183 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:51:55,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-19 01:51:55,183 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:51:55,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:51:55,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1871193667, now seen corresponding path program 1 times [2023-12-19 01:51:55,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:51:55,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805067608] [2023-12-19 01:51:55,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:51:55,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:51:55,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:51:55,582 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:51:55,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:51:55,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805067608] [2023-12-19 01:51:55,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805067608] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:51:55,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:51:55,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 01:51:55,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159509650] [2023-12-19 01:51:55,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:51:55,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:51:55,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:51:55,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:51:55,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:51:55,585 INFO L87 Difference]: Start difference. First operand 3325 states and 4400 transitions. Second operand has 3 states, 3 states have (on average 61.0) internal successors, (183), 2 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:51:56,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:51:56,174 INFO L93 Difference]: Finished difference Result 9925 states and 13149 transitions. [2023-12-19 01:51:56,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:51:56,174 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 2 states have internal predecessors, (183), 0 states have call successors, (0), 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 183 [2023-12-19 01:51:56,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:51:56,197 INFO L225 Difference]: With dead ends: 9925 [2023-12-19 01:51:56,197 INFO L226 Difference]: Without dead ends: 6601 [2023-12-19 01:51:56,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:51:56,217 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 217 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 645 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 01:51:56,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 166 Invalid, 711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 645 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 01:51:56,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6601 states. [2023-12-19 01:51:56,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6601 to 5767. [2023-12-19 01:51:56,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5767 states, 5766 states have (on average 1.3371488033298646) internal successors, (7710), 5766 states have internal predecessors, (7710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:51:56,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5767 states to 5767 states and 7710 transitions. [2023-12-19 01:51:56,390 INFO L78 Accepts]: Start accepts. Automaton has 5767 states and 7710 transitions. Word has length 183 [2023-12-19 01:51:56,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:51:56,390 INFO L495 AbstractCegarLoop]: Abstraction has 5767 states and 7710 transitions. [2023-12-19 01:51:56,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 2 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:51:56,391 INFO L276 IsEmpty]: Start isEmpty. Operand 5767 states and 7710 transitions. [2023-12-19 01:51:56,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-12-19 01:51:56,398 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:51:56,398 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:51:56,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-19 01:51:56,398 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:51:56,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:51:56,399 INFO L85 PathProgramCache]: Analyzing trace with hash -707649173, now seen corresponding path program 1 times [2023-12-19 01:51:56,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:51:56,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700594342] [2023-12-19 01:51:56,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:51:56,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:51:56,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:51:56,684 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-19 01:51:56,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:51:56,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700594342] [2023-12-19 01:51:56,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700594342] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:51:56,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:51:56,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 01:51:56,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111021447] [2023-12-19 01:51:56,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:51:56,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:51:56,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:51:56,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:51:56,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:51:56,686 INFO L87 Difference]: Start difference. First operand 5767 states and 7710 transitions. Second operand has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 2 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:51:57,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:51:57,580 INFO L93 Difference]: Finished difference Result 15633 states and 21104 transitions. [2023-12-19 01:51:57,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:51:57,594 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 2 states have internal predecessors, (188), 0 states have call successors, (0), 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 192 [2023-12-19 01:51:57,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:51:57,636 INFO L225 Difference]: With dead ends: 15633 [2023-12-19 01:51:57,636 INFO L226 Difference]: Without dead ends: 9867 [2023-12-19 01:51:57,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:51:57,645 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 211 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 740 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 01:51:57,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 186 Invalid, 755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 740 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 01:51:57,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9867 states. [2023-12-19 01:51:57,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9867 to 9642. [2023-12-19 01:51:57,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9642 states, 9641 states have (on average 1.3567057359195105) internal successors, (13080), 9641 states have internal predecessors, (13080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:51:57,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9642 states to 9642 states and 13080 transitions. [2023-12-19 01:51:57,829 INFO L78 Accepts]: Start accepts. Automaton has 9642 states and 13080 transitions. Word has length 192 [2023-12-19 01:51:57,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:51:57,830 INFO L495 AbstractCegarLoop]: Abstraction has 9642 states and 13080 transitions. [2023-12-19 01:51:57,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 2 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:51:57,830 INFO L276 IsEmpty]: Start isEmpty. Operand 9642 states and 13080 transitions. [2023-12-19 01:51:57,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2023-12-19 01:51:57,841 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:51:57,842 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:51:57,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-19 01:51:57,842 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:51:57,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:51:57,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1505431548, now seen corresponding path program 1 times [2023-12-19 01:51:57,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:51:57,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063898518] [2023-12-19 01:51:57,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:51:57,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:51:57,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:51:58,180 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 37 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:51:58,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:51:58,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063898518] [2023-12-19 01:51:58,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063898518] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:51:58,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294452724] [2023-12-19 01:51:58,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:51:58,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:51:58,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:51:58,184 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) [2023-12-19 01:51:58,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 01:51:58,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:51:58,370 INFO L262 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 01:51:58,380 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:51:58,619 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-19 01:51:58,620 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 01:51:58,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [294452724] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:51:58,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 01:51:58,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-19 01:51:58,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510374509] [2023-12-19 01:51:58,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:51:58,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:51:58,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:51:58,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:51:58,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 01:51:58,621 INFO L87 Difference]: Start difference. First operand 9642 states and 13080 transitions. Second operand has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:51:59,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:51:59,455 INFO L93 Difference]: Finished difference Result 24979 states and 34054 transitions. [2023-12-19 01:51:59,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:51:59,456 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 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 195 [2023-12-19 01:51:59,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:51:59,509 INFO L225 Difference]: With dead ends: 24979 [2023-12-19 01:51:59,509 INFO L226 Difference]: Without dead ends: 15745 [2023-12-19 01:51:59,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 01:51:59,526 INFO L413 NwaCegarLoop]: 394 mSDtfsCounter, 85 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 601 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 01:51:59,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 423 Invalid, 728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 601 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 01:51:59,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15745 states. [2023-12-19 01:51:59,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15745 to 15735. [2023-12-19 01:51:59,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15735 states, 15734 states have (on average 1.3226134485826873) internal successors, (20810), 15734 states have internal predecessors, (20810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:51:59,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15735 states to 15735 states and 20810 transitions. [2023-12-19 01:51:59,775 INFO L78 Accepts]: Start accepts. Automaton has 15735 states and 20810 transitions. Word has length 195 [2023-12-19 01:51:59,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:51:59,776 INFO L495 AbstractCegarLoop]: Abstraction has 15735 states and 20810 transitions. [2023-12-19 01:51:59,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:51:59,776 INFO L276 IsEmpty]: Start isEmpty. Operand 15735 states and 20810 transitions. [2023-12-19 01:51:59,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2023-12-19 01:51:59,796 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:51:59,797 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:51:59,815 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-19 01:52:00,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:52:00,006 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:52:00,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:52:00,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1306950348, now seen corresponding path program 1 times [2023-12-19 01:52:00,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:52:00,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205863014] [2023-12-19 01:52:00,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:52:00,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:52:00,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:52:00,365 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-19 01:52:00,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:52:00,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205863014] [2023-12-19 01:52:00,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205863014] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:52:00,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:52:00,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 01:52:00,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491342392] [2023-12-19 01:52:00,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:52:00,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:52:00,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:52:00,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:52:00,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:52:00,367 INFO L87 Difference]: Start difference. First operand 15735 states and 20810 transitions. Second operand has 3 states, 3 states have (on average 59.0) internal successors, (177), 2 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:52:01,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:52:01,686 INFO L93 Difference]: Finished difference Result 35948 states and 47614 transitions. [2023-12-19 01:52:01,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:52:01,700 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 2 states have internal predecessors, (177), 0 states have call successors, (0), 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 202 [2023-12-19 01:52:01,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:52:01,740 INFO L225 Difference]: With dead ends: 35948 [2023-12-19 01:52:01,740 INFO L226 Difference]: Without dead ends: 20214 [2023-12-19 01:52:01,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:52:01,757 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 204 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 615 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:52:01,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 171 Invalid, 732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 615 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-19 01:52:01,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20214 states. [2023-12-19 01:52:02,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20214 to 20201. [2023-12-19 01:52:02,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20201 states, 20200 states have (on average 1.30509900990099) internal successors, (26363), 20200 states have internal predecessors, (26363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:52:02,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20201 states to 20201 states and 26363 transitions. [2023-12-19 01:52:02,123 INFO L78 Accepts]: Start accepts. Automaton has 20201 states and 26363 transitions. Word has length 202 [2023-12-19 01:52:02,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:52:02,123 INFO L495 AbstractCegarLoop]: Abstraction has 20201 states and 26363 transitions. [2023-12-19 01:52:02,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 2 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:52:02,123 INFO L276 IsEmpty]: Start isEmpty. Operand 20201 states and 26363 transitions. [2023-12-19 01:52:02,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2023-12-19 01:52:02,143 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:52:02,143 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:52:02,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-19 01:52:02,143 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:52:02,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:52:02,144 INFO L85 PathProgramCache]: Analyzing trace with hash 344506857, now seen corresponding path program 1 times [2023-12-19 01:52:02,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:52:02,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876625406] [2023-12-19 01:52:02,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:52:02,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:52:02,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:52:02,342 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-19 01:52:02,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:52:02,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876625406] [2023-12-19 01:52:02,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876625406] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:52:02,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:52:02,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:52:02,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573022626] [2023-12-19 01:52:02,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:52:02,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:52:02,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:52:02,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:52:02,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:52:02,344 INFO L87 Difference]: Start difference. First operand 20201 states and 26363 transitions. Second operand has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:52:03,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:52:03,072 INFO L93 Difference]: Finished difference Result 42036 states and 54659 transitions. [2023-12-19 01:52:03,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:52:03,073 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 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 205 [2023-12-19 01:52:03,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:52:03,121 INFO L225 Difference]: With dead ends: 42036 [2023-12-19 01:52:03,121 INFO L226 Difference]: Without dead ends: 22446 [2023-12-19 01:52:03,145 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 [2023-12-19 01:52:03,145 INFO L413 NwaCegarLoop]: 398 mSDtfsCounter, 202 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 01:52:03,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 420 Invalid, 696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 604 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 01:52:03,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22446 states. [2023-12-19 01:52:03,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22446 to 22442. [2023-12-19 01:52:03,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22442 states, 22441 states have (on average 1.2857715788066486) internal successors, (28854), 22441 states have internal predecessors, (28854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:52:03,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22442 states to 22442 states and 28854 transitions. [2023-12-19 01:52:03,583 INFO L78 Accepts]: Start accepts. Automaton has 22442 states and 28854 transitions. Word has length 205 [2023-12-19 01:52:03,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:52:03,583 INFO L495 AbstractCegarLoop]: Abstraction has 22442 states and 28854 transitions. [2023-12-19 01:52:03,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:52:03,584 INFO L276 IsEmpty]: Start isEmpty. Operand 22442 states and 28854 transitions. [2023-12-19 01:52:03,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2023-12-19 01:52:03,600 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:52:03,600 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:52:03,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-19 01:52:03,601 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:52:03,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:52:03,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1513894693, now seen corresponding path program 1 times [2023-12-19 01:52:03,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:52:03,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372942043] [2023-12-19 01:52:03,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:52:03,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:52:03,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:52:04,048 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 50 proven. 6 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-19 01:52:04,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:52:04,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372942043] [2023-12-19 01:52:04,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372942043] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:52:04,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100670275] [2023-12-19 01:52:04,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:52:04,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:52:04,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:52:04,052 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 01:52:04,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 01:52:04,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:52:04,212 INFO L262 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 01:52:04,223 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:52:04,285 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-12-19 01:52:04,286 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 01:52:04,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [100670275] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:52:04,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 01:52:04,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2023-12-19 01:52:04,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347348203] [2023-12-19 01:52:04,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:52:04,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:52:04,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:52:04,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:52:04,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-19 01:52:04,287 INFO L87 Difference]: Start difference. First operand 22442 states and 28854 transitions. Second operand has 3 states, 3 states have (on average 62.0) internal successors, (186), 2 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:52:05,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:52:05,125 INFO L93 Difference]: Finished difference Result 58312 states and 75047 transitions. [2023-12-19 01:52:05,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:52:05,126 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 2 states have internal predecessors, (186), 0 states have call successors, (0), 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 209 [2023-12-19 01:52:05,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:52:05,177 INFO L225 Difference]: With dead ends: 58312 [2023-12-19 01:52:05,177 INFO L226 Difference]: Without dead ends: 36074 [2023-12-19 01:52:05,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-19 01:52:05,202 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 233 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 636 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 01:52:05,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 159 Invalid, 713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 636 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 01:52:05,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36074 states. [2023-12-19 01:52:05,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36074 to 34852. [2023-12-19 01:52:05,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34852 states, 34851 states have (on average 1.259332587300221) internal successors, (43889), 34851 states have internal predecessors, (43889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:52:05,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34852 states to 34852 states and 43889 transitions. [2023-12-19 01:52:05,748 INFO L78 Accepts]: Start accepts. Automaton has 34852 states and 43889 transitions. Word has length 209 [2023-12-19 01:52:05,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:52:05,749 INFO L495 AbstractCegarLoop]: Abstraction has 34852 states and 43889 transitions. [2023-12-19 01:52:05,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 2 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:52:05,749 INFO L276 IsEmpty]: Start isEmpty. Operand 34852 states and 43889 transitions. [2023-12-19 01:52:05,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2023-12-19 01:52:05,773 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:52:05,773 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:52:05,781 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 01:52:05,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-19 01:52:05,982 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:52:05,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:52:05,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1787594038, now seen corresponding path program 1 times [2023-12-19 01:52:05,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:52:05,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766440754] [2023-12-19 01:52:05,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:52:05,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:52:06,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:52:06,517 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-19 01:52:06,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:52:06,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766440754] [2023-12-19 01:52:06,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766440754] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:52:06,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:52:06,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 01:52:06,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273092853] [2023-12-19 01:52:06,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:52:06,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:52:06,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:52:06,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:52:06,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:52:06,519 INFO L87 Difference]: Start difference. First operand 34852 states and 43889 transitions. Second operand has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 2 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:52:07,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:52:07,527 INFO L93 Difference]: Finished difference Result 76643 states and 96208 transitions. [2023-12-19 01:52:07,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:52:07,528 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 2 states have internal predecessors, (199), 0 states have call successors, (0), 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 217 [2023-12-19 01:52:07,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:52:07,682 INFO L225 Difference]: With dead ends: 76643 [2023-12-19 01:52:07,682 INFO L226 Difference]: Without dead ends: 42605 [2023-12-19 01:52:07,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:52:07,708 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 197 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 729 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 01:52:07,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 200 Invalid, 769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 729 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 01:52:07,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42605 states. [2023-12-19 01:52:08,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42605 to 42591. [2023-12-19 01:52:08,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42591 states, 42590 states have (on average 1.2447757689598498) internal successors, (53015), 42590 states have internal predecessors, (53015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:52:08,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42591 states to 42591 states and 53015 transitions. [2023-12-19 01:52:08,318 INFO L78 Accepts]: Start accepts. Automaton has 42591 states and 53015 transitions. Word has length 217 [2023-12-19 01:52:08,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:52:08,318 INFO L495 AbstractCegarLoop]: Abstraction has 42591 states and 53015 transitions. [2023-12-19 01:52:08,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 2 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:52:08,319 INFO L276 IsEmpty]: Start isEmpty. Operand 42591 states and 53015 transitions. [2023-12-19 01:52:08,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2023-12-19 01:52:08,340 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:52:08,342 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:52:08,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-19 01:52:08,343 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:52:08,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:52:08,343 INFO L85 PathProgramCache]: Analyzing trace with hash 661395237, now seen corresponding path program 1 times [2023-12-19 01:52:08,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:52:08,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946765531] [2023-12-19 01:52:08,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:52:08,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:52:08,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:52:08,998 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 72 proven. 6 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-19 01:52:08,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:52:08,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946765531] [2023-12-19 01:52:08,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946765531] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:52:08,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1212969582] [2023-12-19 01:52:08,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:52:08,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:52:08,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:52:09,000 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 01:52:09,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 01:52:09,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:52:09,136 INFO L262 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 01:52:09,147 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:52:09,169 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-19 01:52:09,169 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 01:52:09,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1212969582] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:52:09,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 01:52:09,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-19 01:52:09,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433721419] [2023-12-19 01:52:09,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:52:09,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:52:09,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:52:09,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:52:09,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 01:52:09,173 INFO L87 Difference]: Start difference. First operand 42591 states and 53015 transitions. Second operand has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:52:10,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:52:10,121 INFO L93 Difference]: Finished difference Result 100205 states and 126849 transitions. [2023-12-19 01:52:10,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:52:10,121 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 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 224 [2023-12-19 01:52:10,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:52:10,203 INFO L225 Difference]: With dead ends: 100205 [2023-12-19 01:52:10,203 INFO L226 Difference]: Without dead ends: 58428 [2023-12-19 01:52:10,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 01:52:10,245 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 224 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 01:52:10,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 169 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 01:52:10,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58428 states. [2023-12-19 01:52:11,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58428 to 58019. [2023-12-19 01:52:11,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58019 states, 58018 states have (on average 1.205453479954497) internal successors, (69938), 58018 states have internal predecessors, (69938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:52:11,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58019 states to 58019 states and 69938 transitions. [2023-12-19 01:52:11,128 INFO L78 Accepts]: Start accepts. Automaton has 58019 states and 69938 transitions. Word has length 224 [2023-12-19 01:52:11,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:52:11,128 INFO L495 AbstractCegarLoop]: Abstraction has 58019 states and 69938 transitions. [2023-12-19 01:52:11,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:52:11,128 INFO L276 IsEmpty]: Start isEmpty. Operand 58019 states and 69938 transitions. [2023-12-19 01:52:11,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2023-12-19 01:52:11,151 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:52:11,151 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:52:11,164 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 01:52:11,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:52:11,357 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:52:11,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:52:11,357 INFO L85 PathProgramCache]: Analyzing trace with hash -243626039, now seen corresponding path program 1 times [2023-12-19 01:52:11,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:52:11,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137584559] [2023-12-19 01:52:11,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:52:11,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:52:11,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:52:11,725 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2023-12-19 01:52:11,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:52:11,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137584559] [2023-12-19 01:52:11,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137584559] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:52:11,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:52:11,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:52:11,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998747518] [2023-12-19 01:52:11,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:52:11,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:52:11,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:52:11,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:52:11,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:52:11,727 INFO L87 Difference]: Start difference. First operand 58019 states and 69938 transitions. Second operand has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:52:12,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:52:12,672 INFO L93 Difference]: Finished difference Result 121137 states and 146003 transitions. [2023-12-19 01:52:12,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:52:12,672 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 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 228 [2023-12-19 01:52:12,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:52:12,749 INFO L225 Difference]: With dead ends: 121137 [2023-12-19 01:52:12,749 INFO L226 Difference]: Without dead ends: 63932 [2023-12-19 01:52:12,787 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 [2023-12-19 01:52:12,788 INFO L413 NwaCegarLoop]: 379 mSDtfsCounter, 214 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 01:52:12,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 399 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 571 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 01:52:12,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63932 states. [2023-12-19 01:52:13,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63932 to 54565. [2023-12-19 01:52:13,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54565 states, 54564 states have (on average 1.2010849644454218) internal successors, (65536), 54564 states have internal predecessors, (65536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:52:13,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54565 states to 54565 states and 65536 transitions. [2023-12-19 01:52:13,673 INFO L78 Accepts]: Start accepts. Automaton has 54565 states and 65536 transitions. Word has length 228 [2023-12-19 01:52:13,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:52:13,673 INFO L495 AbstractCegarLoop]: Abstraction has 54565 states and 65536 transitions. [2023-12-19 01:52:13,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:52:13,673 INFO L276 IsEmpty]: Start isEmpty. Operand 54565 states and 65536 transitions. [2023-12-19 01:52:13,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2023-12-19 01:52:13,697 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:52:13,697 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:52:13,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-19 01:52:13,697 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:52:13,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:52:13,697 INFO L85 PathProgramCache]: Analyzing trace with hash -219616895, now seen corresponding path program 1 times [2023-12-19 01:52:13,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:52:13,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815891137] [2023-12-19 01:52:13,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:52:13,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:52:13,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:52:14,263 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 96 proven. 6 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-12-19 01:52:14,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:52:14,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815891137] [2023-12-19 01:52:14,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815891137] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:52:14,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712470485] [2023-12-19 01:52:14,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:52:14,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:52:14,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:52:14,265 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 01:52:14,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 01:52:14,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:52:14,402 INFO L262 TraceCheckSpWp]: Trace formula consists of 518 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 01:52:14,405 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:52:14,426 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-12-19 01:52:14,426 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 01:52:14,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [712470485] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:52:14,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 01:52:14,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-19 01:52:14,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307681820] [2023-12-19 01:52:14,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:52:14,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:52:14,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:52:14,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:52:14,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 01:52:14,427 INFO L87 Difference]: Start difference. First operand 54565 states and 65536 transitions. Second operand has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:52:15,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:52:15,257 INFO L93 Difference]: Finished difference Result 108114 states and 129932 transitions. [2023-12-19 01:52:15,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:52:15,257 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 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 244 [2023-12-19 01:52:15,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:52:15,333 INFO L225 Difference]: With dead ends: 108114 [2023-12-19 01:52:15,333 INFO L226 Difference]: Without dead ends: 54363 [2023-12-19 01:52:15,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 01:52:15,368 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 257 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 01:52:15,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 97 Invalid, 666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 01:52:15,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54363 states. [2023-12-19 01:52:15,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54363 to 54360. [2023-12-19 01:52:15,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54360 states, 54359 states have (on average 1.186942364649828) internal successors, (64521), 54359 states have internal predecessors, (64521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:52:16,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54360 states to 54360 states and 64521 transitions. [2023-12-19 01:52:16,174 INFO L78 Accepts]: Start accepts. Automaton has 54360 states and 64521 transitions. Word has length 244 [2023-12-19 01:52:16,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:52:16,174 INFO L495 AbstractCegarLoop]: Abstraction has 54360 states and 64521 transitions. [2023-12-19 01:52:16,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:52:16,174 INFO L276 IsEmpty]: Start isEmpty. Operand 54360 states and 64521 transitions. [2023-12-19 01:52:16,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2023-12-19 01:52:16,202 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:52:16,203 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 01:52:16,218 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-19 01:52:16,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-19 01:52:16,409 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:52:16,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:52:16,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1558801661, now seen corresponding path program 1 times [2023-12-19 01:52:16,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:52:16,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739846936] [2023-12-19 01:52:16,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:52:16,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:52:16,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:52:16,792 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:52:16,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:52:16,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739846936] [2023-12-19 01:52:16,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739846936] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:52:16,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:52:16,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 01:52:16,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222297096] [2023-12-19 01:52:16,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:52:16,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:52:16,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:52:16,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:52:16,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:52:16,794 INFO L87 Difference]: Start difference. First operand 54360 states and 64521 transitions. Second operand has 3 states, 3 states have (on average 94.33333333333333) internal successors, (283), 2 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:52:17,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:52:17,675 INFO L93 Difference]: Finished difference Result 115243 states and 136568 transitions. [2023-12-19 01:52:17,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:52:17,675 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 94.33333333333333) internal successors, (283), 2 states have internal predecessors, (283), 0 states have call successors, (0), 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 283 [2023-12-19 01:52:17,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:52:17,756 INFO L225 Difference]: With dead ends: 115243 [2023-12-19 01:52:17,756 INFO L226 Difference]: Without dead ends: 61697 [2023-12-19 01:52:17,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:52:17,786 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 106 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 725 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 01:52:17,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 196 Invalid, 766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 725 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 01:52:17,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61697 states. [2023-12-19 01:52:18,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61697 to 61692. [2023-12-19 01:52:18,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61692 states, 61691 states have (on average 1.1803342464865216) internal successors, (72816), 61691 states have internal predecessors, (72816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:52:18,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61692 states to 61692 states and 72816 transitions. [2023-12-19 01:52:18,632 INFO L78 Accepts]: Start accepts. Automaton has 61692 states and 72816 transitions. Word has length 283 [2023-12-19 01:52:18,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:52:18,632 INFO L495 AbstractCegarLoop]: Abstraction has 61692 states and 72816 transitions. [2023-12-19 01:52:18,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.33333333333333) internal successors, (283), 2 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:52:18,633 INFO L276 IsEmpty]: Start isEmpty. Operand 61692 states and 72816 transitions. [2023-12-19 01:52:18,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2023-12-19 01:52:18,672 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:52:18,672 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:52:18,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-19 01:52:18,672 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:52:18,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:52:18,673 INFO L85 PathProgramCache]: Analyzing trace with hash -319787726, now seen corresponding path program 1 times [2023-12-19 01:52:18,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:52:18,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192917459] [2023-12-19 01:52:18,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:52:18,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:52:18,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:52:19,925 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 130 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:52:19,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:52:19,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192917459] [2023-12-19 01:52:19,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192917459] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:52:19,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1513325089] [2023-12-19 01:52:19,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:52:19,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:52:19,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:52:19,927 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 01:52:19,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 01:52:20,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:52:20,080 INFO L262 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 01:52:20,085 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:52:20,410 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:52:20,410 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 01:52:20,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1513325089] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:52:20,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 01:52:20,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-12-19 01:52:20,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435024971] [2023-12-19 01:52:20,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:52:20,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 01:52:20,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:52:20,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 01:52:20,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:52:20,411 INFO L87 Difference]: Start difference. First operand 61692 states and 72816 transitions. Second operand has 4 states, 4 states have (on average 72.5) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:52:21,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:52:21,517 INFO L93 Difference]: Finished difference Result 132121 states and 155451 transitions. [2023-12-19 01:52:21,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 01:52:21,518 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 72.5) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 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 290 [2023-12-19 01:52:21,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:52:21,609 INFO L225 Difference]: With dead ends: 132121 [2023-12-19 01:52:21,610 INFO L226 Difference]: Without dead ends: 71649 [2023-12-19 01:52:21,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:52:21,649 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 418 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 811 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 01:52:21,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [418 Valid, 183 Invalid, 985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 811 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 01:52:21,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71649 states. [2023-12-19 01:52:22,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71649 to 69203. [2023-12-19 01:52:22,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69203 states, 69202 states have (on average 1.1624375018063062) internal successors, (80443), 69202 states have internal predecessors, (80443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:52:22,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69203 states to 69203 states and 80443 transitions. [2023-12-19 01:52:22,744 INFO L78 Accepts]: Start accepts. Automaton has 69203 states and 80443 transitions. Word has length 290 [2023-12-19 01:52:22,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:52:22,745 INFO L495 AbstractCegarLoop]: Abstraction has 69203 states and 80443 transitions. [2023-12-19 01:52:22,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.5) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:52:22,745 INFO L276 IsEmpty]: Start isEmpty. Operand 69203 states and 80443 transitions. [2023-12-19 01:52:22,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2023-12-19 01:52:22,791 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:52:22,792 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:52:22,797 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-19 01:52:22,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-19 01:52:22,997 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:52:22,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:52:22,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1773461167, now seen corresponding path program 1 times [2023-12-19 01:52:22,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:52:22,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145319512] [2023-12-19 01:52:22,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:52:23,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:52:23,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:52:23,419 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-19 01:52:23,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:52:23,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145319512] [2023-12-19 01:52:23,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145319512] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:52:23,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:52:23,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:52:23,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537878644] [2023-12-19 01:52:23,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:52:23,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 01:52:23,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:52:23,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 01:52:23,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 01:52:23,421 INFO L87 Difference]: Start difference. First operand 69203 states and 80443 transitions. Second operand has 4 states, 4 states have (on average 73.25) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:52:24,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:52:24,400 INFO L93 Difference]: Finished difference Result 121497 states and 141152 transitions. [2023-12-19 01:52:24,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 01:52:24,401 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 73.25) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 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 298 [2023-12-19 01:52:24,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:52:24,469 INFO L225 Difference]: With dead ends: 121497 [2023-12-19 01:52:24,469 INFO L226 Difference]: Without dead ends: 50266 [2023-12-19 01:52:24,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 01:52:24,510 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 627 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 627 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 01:52:24,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [627 Valid, 44 Invalid, 760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 01:52:24,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50266 states. [2023-12-19 01:52:25,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50266 to 42541. [2023-12-19 01:52:25,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42541 states, 42540 states have (on average 1.1075693464974141) internal successors, (47116), 42540 states have internal predecessors, (47116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:52:25,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42541 states to 42541 states and 47116 transitions. [2023-12-19 01:52:25,099 INFO L78 Accepts]: Start accepts. Automaton has 42541 states and 47116 transitions. Word has length 298 [2023-12-19 01:52:25,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:52:25,099 INFO L495 AbstractCegarLoop]: Abstraction has 42541 states and 47116 transitions. [2023-12-19 01:52:25,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.25) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:52:25,100 INFO L276 IsEmpty]: Start isEmpty. Operand 42541 states and 47116 transitions. [2023-12-19 01:52:25,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2023-12-19 01:52:25,286 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:52:25,286 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:52:25,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-19 01:52:25,286 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:52:25,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:52:25,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1013035275, now seen corresponding path program 1 times [2023-12-19 01:52:25,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:52:25,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981910490] [2023-12-19 01:52:25,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:52:25,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:52:25,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:52:25,507 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 198 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2023-12-19 01:52:25,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:52:25,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981910490] [2023-12-19 01:52:25,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981910490] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:52:25,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:52:25,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:52:25,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847055467] [2023-12-19 01:52:25,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:52:25,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 01:52:25,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:52:25,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 01:52:25,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 01:52:25,509 INFO L87 Difference]: Start difference. First operand 42541 states and 47116 transitions. Second operand has 4 states, 4 states have (on average 60.75) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:52:26,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:52:26,601 INFO L93 Difference]: Finished difference Result 84497 states and 93635 transitions. [2023-12-19 01:52:26,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 01:52:26,602 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 60.75) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 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 316 [2023-12-19 01:52:26,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:52:26,650 INFO L225 Difference]: With dead ends: 84497 [2023-12-19 01:52:26,651 INFO L226 Difference]: Without dead ends: 41958 [2023-12-19 01:52:26,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 01:52:26,677 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 352 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 1025 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 1132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 1025 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-19 01:52:26,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 82 Invalid, 1132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 1025 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-19 01:52:26,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41958 states. [2023-12-19 01:52:27,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41958 to 41526. [2023-12-19 01:52:27,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41526 states, 41525 states have (on average 1.1069476219145093) internal successors, (45966), 41525 states have internal predecessors, (45966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:52:27,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41526 states to 41526 states and 45966 transitions. [2023-12-19 01:52:27,315 INFO L78 Accepts]: Start accepts. Automaton has 41526 states and 45966 transitions. Word has length 316 [2023-12-19 01:52:27,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:52:27,316 INFO L495 AbstractCegarLoop]: Abstraction has 41526 states and 45966 transitions. [2023-12-19 01:52:27,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.75) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:52:27,316 INFO L276 IsEmpty]: Start isEmpty. Operand 41526 states and 45966 transitions. [2023-12-19 01:52:27,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2023-12-19 01:52:27,343 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:52:27,343 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 01:52:27,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-19 01:52:27,343 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:52:27,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:52:27,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1908000071, now seen corresponding path program 1 times [2023-12-19 01:52:27,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:52:27,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45702108] [2023-12-19 01:52:27,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:52:27,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:52:27,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:52:27,854 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 74 proven. 6 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-12-19 01:52:27,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:52:27,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45702108] [2023-12-19 01:52:27,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45702108] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:52:27,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925022008] [2023-12-19 01:52:27,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:52:27,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:52:27,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:52:27,855 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 01:52:27,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-19 01:52:27,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:52:28,002 INFO L262 TraceCheckSpWp]: Trace formula consists of 560 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 01:52:28,026 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:52:28,097 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-12-19 01:52:28,097 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 01:52:28,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1925022008] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:52:28,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 01:52:28,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-19 01:52:28,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309472543] [2023-12-19 01:52:28,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:52:28,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 01:52:28,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:52:28,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 01:52:28,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-19 01:52:28,100 INFO L87 Difference]: Start difference. First operand 41526 states and 45966 transitions. Second operand has 4 states, 4 states have (on average 49.5) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:52:28,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:52:28,955 INFO L93 Difference]: Finished difference Result 80625 states and 89035 transitions. [2023-12-19 01:52:28,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 01:52:28,956 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 49.5) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 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 321 [2023-12-19 01:52:28,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:52:29,001 INFO L225 Difference]: With dead ends: 80625 [2023-12-19 01:52:29,001 INFO L226 Difference]: Without dead ends: 39100 [2023-12-19 01:52:29,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 319 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-19 01:52:29,025 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 487 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 487 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 01:52:29,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [487 Valid, 374 Invalid, 760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 01:52:29,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39100 states. [2023-12-19 01:52:29,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39100 to 31158. [2023-12-19 01:52:29,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31158 states, 31157 states have (on average 1.0909586930705781) internal successors, (33991), 31157 states have internal predecessors, (33991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:52:29,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31158 states to 31158 states and 33991 transitions. [2023-12-19 01:52:29,511 INFO L78 Accepts]: Start accepts. Automaton has 31158 states and 33991 transitions. Word has length 321 [2023-12-19 01:52:29,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:52:29,511 INFO L495 AbstractCegarLoop]: Abstraction has 31158 states and 33991 transitions. [2023-12-19 01:52:29,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.5) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:52:29,511 INFO L276 IsEmpty]: Start isEmpty. Operand 31158 states and 33991 transitions. [2023-12-19 01:52:29,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2023-12-19 01:52:29,533 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:52:29,534 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:52:29,541 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-19 01:52:29,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:52:29,739 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:52:29,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:52:29,740 INFO L85 PathProgramCache]: Analyzing trace with hash 886144847, now seen corresponding path program 1 times [2023-12-19 01:52:29,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:52:29,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205169996] [2023-12-19 01:52:29,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:52:29,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:52:29,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:52:30,414 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-12-19 01:52:30,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:52:30,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205169996] [2023-12-19 01:52:30,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205169996] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:52:30,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:52:30,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 01:52:30,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192370752] [2023-12-19 01:52:30,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:52:30,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:52:30,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:52:30,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:52:30,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:52:30,416 INFO L87 Difference]: Start difference. First operand 31158 states and 33991 transitions. Second operand has 3 states, 3 states have (on average 78.0) internal successors, (234), 2 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:52:31,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:52:31,007 INFO L93 Difference]: Finished difference Result 62519 states and 68196 transitions. [2023-12-19 01:52:31,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:52:31,008 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 2 states have internal predecessors, (234), 0 states have call successors, (0), 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 357 [2023-12-19 01:52:31,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:52:31,041 INFO L225 Difference]: With dead ends: 62519 [2023-12-19 01:52:31,041 INFO L226 Difference]: Without dead ends: 31769 [2023-12-19 01:52:31,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:52:31,059 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 133 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 501 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 01:52:31,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 112 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 501 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 01:52:31,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31769 states. [2023-12-19 01:52:31,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31769 to 31767. [2023-12-19 01:52:31,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31767 states, 31766 states have (on average 1.090033369010892) internal successors, (34626), 31766 states have internal predecessors, (34626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:52:31,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31767 states to 31767 states and 34626 transitions. [2023-12-19 01:52:31,392 INFO L78 Accepts]: Start accepts. Automaton has 31767 states and 34626 transitions. Word has length 357 [2023-12-19 01:52:31,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:52:31,393 INFO L495 AbstractCegarLoop]: Abstraction has 31767 states and 34626 transitions. [2023-12-19 01:52:31,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 2 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:52:31,393 INFO L276 IsEmpty]: Start isEmpty. Operand 31767 states and 34626 transitions. [2023-12-19 01:52:31,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2023-12-19 01:52:31,419 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:52:31,419 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:52:31,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-19 01:52:31,507 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:52:31,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:52:31,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1278781769, now seen corresponding path program 1 times [2023-12-19 01:52:31,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:52:31,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312264014] [2023-12-19 01:52:31,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:52:31,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:52:31,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:52:31,746 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 329 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2023-12-19 01:52:31,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:52:31,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312264014] [2023-12-19 01:52:31,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312264014] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:52:31,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:52:31,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:52:31,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774562725] [2023-12-19 01:52:31,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:52:31,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 01:52:31,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:52:31,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 01:52:31,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 01:52:31,748 INFO L87 Difference]: Start difference. First operand 31767 states and 34626 transitions. Second operand has 4 states, 4 states have (on average 77.0) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:52:32,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:52:32,554 INFO L93 Difference]: Finished difference Result 75324 states and 82133 transitions. [2023-12-19 01:52:32,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 01:52:32,556 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 77.0) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 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 381 [2023-12-19 01:52:32,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:52:32,604 INFO L225 Difference]: With dead ends: 75324 [2023-12-19 01:52:32,604 INFO L226 Difference]: Without dead ends: 44574 [2023-12-19 01:52:32,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 01:52:32,625 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 331 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 667 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 01:52:32,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 395 Invalid, 800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 667 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 01:52:32,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44574 states. [2023-12-19 01:52:33,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44574 to 41113. [2023-12-19 01:52:33,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41113 states, 41112 states have (on average 1.0835035999221638) internal successors, (44545), 41112 states have internal predecessors, (44545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:52:33,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41113 states to 41113 states and 44545 transitions. [2023-12-19 01:52:33,197 INFO L78 Accepts]: Start accepts. Automaton has 41113 states and 44545 transitions. Word has length 381 [2023-12-19 01:52:33,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:52:33,197 INFO L495 AbstractCegarLoop]: Abstraction has 41113 states and 44545 transitions. [2023-12-19 01:52:33,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.0) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:52:33,197 INFO L276 IsEmpty]: Start isEmpty. Operand 41113 states and 44545 transitions. [2023-12-19 01:52:33,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2023-12-19 01:52:33,227 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:52:33,227 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:52:33,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-19 01:52:33,227 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:52:33,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:52:33,227 INFO L85 PathProgramCache]: Analyzing trace with hash 715886918, now seen corresponding path program 1 times [2023-12-19 01:52:33,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:52:33,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709301261] [2023-12-19 01:52:33,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:52:33,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:52:33,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:52:33,781 INFO L134 CoverageAnalysis]: Checked inductivity of 371 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2023-12-19 01:52:33,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:52:33,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709301261] [2023-12-19 01:52:33,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709301261] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:52:33,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:52:33,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 01:52:33,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211816714] [2023-12-19 01:52:33,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:52:33,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:52:33,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:52:33,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:52:33,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:52:33,783 INFO L87 Difference]: Start difference. First operand 41113 states and 44545 transitions. Second operand has 3 states, 3 states have (on average 65.0) internal successors, (195), 2 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:52:34,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:52:34,434 INFO L93 Difference]: Finished difference Result 90370 states and 97967 transitions. [2023-12-19 01:52:34,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:52:34,435 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 2 states have internal predecessors, (195), 0 states have call successors, (0), 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 391 [2023-12-19 01:52:34,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:52:34,495 INFO L225 Difference]: With dead ends: 90370 [2023-12-19 01:52:34,495 INFO L226 Difference]: Without dead ends: 50070 [2023-12-19 01:52:34,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:52:34,526 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 199 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 582 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 01:52:34,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 120 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 582 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 01:52:34,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50070 states. [2023-12-19 01:52:35,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50070 to 48035. [2023-12-19 01:52:35,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48035 states, 48034 states have (on average 1.0858974892784279) internal successors, (52160), 48034 states have internal predecessors, (52160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:52:35,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48035 states to 48035 states and 52160 transitions. [2023-12-19 01:52:35,113 INFO L78 Accepts]: Start accepts. Automaton has 48035 states and 52160 transitions. Word has length 391 [2023-12-19 01:52:35,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:52:35,113 INFO L495 AbstractCegarLoop]: Abstraction has 48035 states and 52160 transitions. [2023-12-19 01:52:35,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 2 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:52:35,113 INFO L276 IsEmpty]: Start isEmpty. Operand 48035 states and 52160 transitions. [2023-12-19 01:52:35,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2023-12-19 01:52:35,302 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:52:35,302 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:52:35,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-19 01:52:35,302 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:52:35,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:52:35,303 INFO L85 PathProgramCache]: Analyzing trace with hash -687418344, now seen corresponding path program 1 times [2023-12-19 01:52:35,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:52:35,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717769177] [2023-12-19 01:52:35,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:52:35,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:52:35,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:52:35,581 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 227 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2023-12-19 01:52:35,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:52:35,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717769177] [2023-12-19 01:52:35,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717769177] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:52:35,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:52:35,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:52:35,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097656617] [2023-12-19 01:52:35,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:52:35,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 01:52:35,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:52:35,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 01:52:35,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 01:52:35,583 INFO L87 Difference]: Start difference. First operand 48035 states and 52160 transitions. Second operand has 4 states, 4 states have (on average 66.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:52:36,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:52:36,469 INFO L93 Difference]: Finished difference Result 92222 states and 99980 transitions. [2023-12-19 01:52:36,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 01:52:36,470 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 66.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 405 [2023-12-19 01:52:36,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:52:36,527 INFO L225 Difference]: With dead ends: 92222 [2023-12-19 01:52:36,527 INFO L226 Difference]: Without dead ends: 50704 [2023-12-19 01:52:36,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 01:52:36,556 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 336 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 1063 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 1130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 01:52:36,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [336 Valid, 107 Invalid, 1130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1063 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 01:52:36,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50704 states. [2023-12-19 01:52:37,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50704 to 49257. [2023-12-19 01:52:37,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49257 states, 49256 states have (on average 1.0833807048887445) internal successors, (53363), 49256 states have internal predecessors, (53363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:52:37,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49257 states to 49257 states and 53363 transitions. [2023-12-19 01:52:37,231 INFO L78 Accepts]: Start accepts. Automaton has 49257 states and 53363 transitions. Word has length 405 [2023-12-19 01:52:37,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:52:37,232 INFO L495 AbstractCegarLoop]: Abstraction has 49257 states and 53363 transitions. [2023-12-19 01:52:37,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 66.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:52:37,232 INFO L276 IsEmpty]: Start isEmpty. Operand 49257 states and 53363 transitions. [2023-12-19 01:52:37,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2023-12-19 01:52:37,263 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:52:37,263 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-19 01:52:37,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-19 01:52:37,263 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:52:37,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:52:37,263 INFO L85 PathProgramCache]: Analyzing trace with hash -440264847, now seen corresponding path program 1 times [2023-12-19 01:52:37,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:52:37,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394163787] [2023-12-19 01:52:37,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:52:37,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:52:37,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:52:37,643 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 254 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2023-12-19 01:52:37,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:52:37,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394163787] [2023-12-19 01:52:37,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394163787] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:52:37,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:52:37,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 01:52:37,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761211626] [2023-12-19 01:52:37,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:52:37,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:52:37,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:52:37,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:52:37,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:52:37,645 INFO L87 Difference]: Start difference. First operand 49257 states and 53363 transitions. Second operand has 3 states, 3 states have (on average 95.0) internal successors, (285), 2 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:52:38,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:52:38,037 INFO L93 Difference]: Finished difference Result 128437 states and 138931 transitions. [2023-12-19 01:52:38,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:52:38,038 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 2 states have internal predecessors, (285), 0 states have call successors, (0), 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 413 [2023-12-19 01:52:38,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:52:38,123 INFO L225 Difference]: With dead ends: 128437 [2023-12-19 01:52:38,124 INFO L226 Difference]: Without dead ends: 79993 [2023-12-19 01:52:38,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:52:38,161 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 172 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:52:38,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 462 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 01:52:38,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79993 states. [2023-12-19 01:52:39,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79993 to 79983. [2023-12-19 01:52:39,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79983 states, 79982 states have (on average 1.0797554449751194) internal successors, (86361), 79982 states have internal predecessors, (86361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:52:39,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79983 states to 79983 states and 86361 transitions. [2023-12-19 01:52:39,242 INFO L78 Accepts]: Start accepts. Automaton has 79983 states and 86361 transitions. Word has length 413 [2023-12-19 01:52:39,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:52:39,243 INFO L495 AbstractCegarLoop]: Abstraction has 79983 states and 86361 transitions. [2023-12-19 01:52:39,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 2 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:52:39,243 INFO L276 IsEmpty]: Start isEmpty. Operand 79983 states and 86361 transitions. [2023-12-19 01:52:39,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2023-12-19 01:52:39,271 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:52:39,271 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:52:39,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-19 01:52:39,272 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:52:39,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:52:39,272 INFO L85 PathProgramCache]: Analyzing trace with hash 837596477, now seen corresponding path program 1 times [2023-12-19 01:52:39,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:52:39,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252571866] [2023-12-19 01:52:39,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:52:39,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:52:39,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:52:40,896 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 286 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:52:40,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:52:40,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252571866] [2023-12-19 01:52:40,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252571866] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:52:40,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241114840] [2023-12-19 01:52:40,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:52:40,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:52:40,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:52:40,900 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 01:52:40,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-19 01:52:41,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:52:41,122 INFO L262 TraceCheckSpWp]: Trace formula consists of 667 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 01:52:41,126 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:52:41,366 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 400 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-19 01:52:41,366 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 01:52:41,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1241114840] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:52:41,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 01:52:41,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2023-12-19 01:52:41,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209141162] [2023-12-19 01:52:41,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:52:41,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:52:41,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:52:41,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:52:41,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-19 01:52:41,368 INFO L87 Difference]: Start difference. First operand 79983 states and 86361 transitions. Second operand has 3 states, 3 states have (on average 141.66666666666666) internal successors, (425), 3 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:52:42,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:52:42,314 INFO L93 Difference]: Finished difference Result 162003 states and 174975 transitions. [2023-12-19 01:52:42,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:52:42,315 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 141.66666666666666) internal successors, (425), 3 states have internal predecessors, (425), 0 states have call successors, (0), 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 430 [2023-12-19 01:52:42,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:52:42,415 INFO L225 Difference]: With dead ends: 162003 [2023-12-19 01:52:42,415 INFO L226 Difference]: Without dead ends: 82833 [2023-12-19 01:52:42,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 429 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-19 01:52:42,453 INFO L413 NwaCegarLoop]: 306 mSDtfsCounter, 88 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 01:52:42,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 320 Invalid, 564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 01:52:42,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82833 states. [2023-12-19 01:52:43,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82833 to 82829. [2023-12-19 01:52:43,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82829 states, 82828 states have (on average 1.0770874583474188) internal successors, (89213), 82828 states have internal predecessors, (89213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:52:43,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82829 states to 82829 states and 89213 transitions. [2023-12-19 01:52:43,619 INFO L78 Accepts]: Start accepts. Automaton has 82829 states and 89213 transitions. Word has length 430 [2023-12-19 01:52:43,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:52:43,620 INFO L495 AbstractCegarLoop]: Abstraction has 82829 states and 89213 transitions. [2023-12-19 01:52:43,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.66666666666666) internal successors, (425), 3 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:52:43,620 INFO L276 IsEmpty]: Start isEmpty. Operand 82829 states and 89213 transitions. [2023-12-19 01:52:43,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2023-12-19 01:52:43,657 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:52:43,657 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:52:43,669 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-19 01:52:43,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:52:43,861 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:52:43,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:52:43,861 INFO L85 PathProgramCache]: Analyzing trace with hash 2109784086, now seen corresponding path program 1 times [2023-12-19 01:52:43,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:52:43,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89989286] [2023-12-19 01:52:43,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:52:43,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:52:43,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:52:44,558 INFO L134 CoverageAnalysis]: Checked inductivity of 509 backedges. 324 proven. 9 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2023-12-19 01:52:44,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:52:44,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89989286] [2023-12-19 01:52:44,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89989286] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:52:44,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356620941] [2023-12-19 01:52:44,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:52:44,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:52:44,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:52:44,560 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 01:52:44,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-19 01:52:44,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:52:44,771 INFO L262 TraceCheckSpWp]: Trace formula consists of 782 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 01:52:44,779 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:52:44,803 INFO L134 CoverageAnalysis]: Checked inductivity of 509 backedges. 327 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2023-12-19 01:52:44,804 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 01:52:44,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [356620941] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:52:44,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 01:52:44,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-12-19 01:52:44,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398441573] [2023-12-19 01:52:44,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:52:44,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:52:44,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:52:44,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:52:44,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-19 01:52:44,805 INFO L87 Difference]: Start difference. First operand 82829 states and 89213 transitions. Second operand has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:52:45,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:52:45,612 INFO L93 Difference]: Finished difference Result 162015 states and 174479 transitions. [2023-12-19 01:52:45,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:52:45,613 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 0 states have call successors, (0), 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 462 [2023-12-19 01:52:45,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:52:45,709 INFO L225 Difference]: With dead ends: 162015 [2023-12-19 01:52:45,709 INFO L226 Difference]: Without dead ends: 79999 [2023-12-19 01:52:45,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 465 GetRequests, 461 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-19 01:52:45,767 INFO L413 NwaCegarLoop]: 310 mSDtfsCounter, 211 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 01:52:45,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 324 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 01:52:45,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79999 states. [2023-12-19 01:52:46,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79999 to 78556. [2023-12-19 01:52:46,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78556 states, 78555 states have (on average 1.0707275157532938) internal successors, (84111), 78555 states have internal predecessors, (84111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:52:46,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78556 states to 78556 states and 84111 transitions. [2023-12-19 01:52:46,934 INFO L78 Accepts]: Start accepts. Automaton has 78556 states and 84111 transitions. Word has length 462 [2023-12-19 01:52:46,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:52:46,944 INFO L495 AbstractCegarLoop]: Abstraction has 78556 states and 84111 transitions. [2023-12-19 01:52:46,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:52:46,945 INFO L276 IsEmpty]: Start isEmpty. Operand 78556 states and 84111 transitions. [2023-12-19 01:52:46,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2023-12-19 01:52:46,972 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:52:46,973 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:52:46,994 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-19 01:52:47,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-19 01:52:47,179 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:52:47,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:52:47,179 INFO L85 PathProgramCache]: Analyzing trace with hash -281698159, now seen corresponding path program 1 times [2023-12-19 01:52:47,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:52:47,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515937376] [2023-12-19 01:52:47,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:52:47,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:52:47,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:52:47,555 INFO L134 CoverageAnalysis]: Checked inductivity of 653 backedges. 455 proven. 0 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2023-12-19 01:52:47,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:52:47,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515937376] [2023-12-19 01:52:47,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515937376] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:52:47,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:52:47,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:52:47,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343462343] [2023-12-19 01:52:47,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:52:47,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:52:47,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:52:47,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:52:47,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:52:47,557 INFO L87 Difference]: Start difference. First operand 78556 states and 84111 transitions. Second operand has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:52:48,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:52:48,331 INFO L93 Difference]: Finished difference Result 140831 states and 150435 transitions. [2023-12-19 01:52:48,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:52:48,331 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 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 486 [2023-12-19 01:52:48,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:52:48,400 INFO L225 Difference]: With dead ends: 140831 [2023-12-19 01:52:48,401 INFO L226 Difference]: Without dead ends: 55372 [2023-12-19 01:52:48,445 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 [2023-12-19 01:52:48,446 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 209 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 01:52:48,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 286 Invalid, 556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 01:52:48,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55372 states. [2023-12-19 01:52:49,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55372 to 42953. [2023-12-19 01:52:49,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42953 states, 42952 states have (on average 1.0484028683181226) internal successors, (45031), 42952 states have internal predecessors, (45031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:52:49,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42953 states to 42953 states and 45031 transitions. [2023-12-19 01:52:49,285 INFO L78 Accepts]: Start accepts. Automaton has 42953 states and 45031 transitions. Word has length 486 [2023-12-19 01:52:49,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:52:49,285 INFO L495 AbstractCegarLoop]: Abstraction has 42953 states and 45031 transitions. [2023-12-19 01:52:49,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:52:49,286 INFO L276 IsEmpty]: Start isEmpty. Operand 42953 states and 45031 transitions. [2023-12-19 01:52:49,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2023-12-19 01:52:49,300 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:52:49,300 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-19 01:52:49,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-19 01:52:49,300 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:52:49,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:52:49,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1471275115, now seen corresponding path program 1 times [2023-12-19 01:52:49,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:52:49,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202395231] [2023-12-19 01:52:49,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:52:49,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:52:49,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:52:49,856 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 324 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2023-12-19 01:52:49,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:52:49,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202395231] [2023-12-19 01:52:49,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202395231] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:52:49,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:52:49,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 01:52:49,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349371132] [2023-12-19 01:52:49,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:52:49,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:52:49,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:52:49,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:52:49,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:52:49,859 INFO L87 Difference]: Start difference. First operand 42953 states and 45031 transitions. Second operand has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 2 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:52:50,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:52:50,466 INFO L93 Difference]: Finished difference Result 90391 states and 94840 transitions. [2023-12-19 01:52:50,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:52:50,467 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 2 states have internal predecessors, (290), 0 states have call successors, (0), 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 486 [2023-12-19 01:52:50,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:52:50,518 INFO L225 Difference]: With dead ends: 90391 [2023-12-19 01:52:50,518 INFO L226 Difference]: Without dead ends: 48048 [2023-12-19 01:52:50,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:52:50,543 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 98 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 01:52:50,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 113 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 01:52:50,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48048 states. [2023-12-19 01:52:50,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48048 to 47637. [2023-12-19 01:52:51,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47637 states, 47636 states have (on average 1.0475060878327316) internal successors, (49899), 47636 states have internal predecessors, (49899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:52:51,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47637 states to 47637 states and 49899 transitions. [2023-12-19 01:52:51,069 INFO L78 Accepts]: Start accepts. Automaton has 47637 states and 49899 transitions. Word has length 486 [2023-12-19 01:52:51,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:52:51,070 INFO L495 AbstractCegarLoop]: Abstraction has 47637 states and 49899 transitions. [2023-12-19 01:52:51,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 2 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:52:51,070 INFO L276 IsEmpty]: Start isEmpty. Operand 47637 states and 49899 transitions. [2023-12-19 01:52:51,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2023-12-19 01:52:51,085 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:52:51,085 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:52:51,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-19 01:52:51,085 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:52:51,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:52:51,086 INFO L85 PathProgramCache]: Analyzing trace with hash 713266911, now seen corresponding path program 1 times [2023-12-19 01:52:51,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:52:51,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333682893] [2023-12-19 01:52:51,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:52:51,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:52:51,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:52:51,584 INFO L134 CoverageAnalysis]: Checked inductivity of 672 backedges. 415 proven. 0 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2023-12-19 01:52:51,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:52:51,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333682893] [2023-12-19 01:52:51,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333682893] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:52:51,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:52:51,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 01:52:51,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218590373] [2023-12-19 01:52:51,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:52:51,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:52:51,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:52:51,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:52:51,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:52:51,587 INFO L87 Difference]: Start difference. First operand 47637 states and 49899 transitions. Second operand has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 2 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:52:51,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:52:51,989 INFO L93 Difference]: Finished difference Result 89572 states and 93868 transitions. [2023-12-19 01:52:51,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:52:51,990 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 2 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 492 [2023-12-19 01:52:51,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:52:52,038 INFO L225 Difference]: With dead ends: 89572 [2023-12-19 01:52:52,038 INFO L226 Difference]: Without dead ends: 47229 [2023-12-19 01:52:52,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:52:52,070 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 193 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 01:52:52,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 27 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 01:52:52,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47229 states. [2023-12-19 01:52:52,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47229 to 47229. [2023-12-19 01:52:52,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47229 states, 47228 states have (on average 1.047196578301008) internal successors, (49457), 47228 states have internal predecessors, (49457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:52:52,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47229 states to 47229 states and 49457 transitions. [2023-12-19 01:52:52,787 INFO L78 Accepts]: Start accepts. Automaton has 47229 states and 49457 transitions. Word has length 492 [2023-12-19 01:52:52,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:52:52,788 INFO L495 AbstractCegarLoop]: Abstraction has 47229 states and 49457 transitions. [2023-12-19 01:52:52,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 2 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:52:52,788 INFO L276 IsEmpty]: Start isEmpty. Operand 47229 states and 49457 transitions. [2023-12-19 01:52:52,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2023-12-19 01:52:52,803 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:52:52,804 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:52:52,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-19 01:52:52,804 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:52:52,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:52:52,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1104156614, now seen corresponding path program 1 times [2023-12-19 01:52:52,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:52:52,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853187850] [2023-12-19 01:52:52,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:52:52,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:52:53,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:52:55,371 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 527 proven. 223 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:52:55,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:52:55,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853187850] [2023-12-19 01:52:55,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853187850] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:52:55,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172101095] [2023-12-19 01:52:55,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:52:55,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:52:55,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:52:55,373 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 01:52:55,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-19 01:52:55,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:52:55,588 INFO L262 TraceCheckSpWp]: Trace formula consists of 870 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 01:52:55,593 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:52:55,891 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 610 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2023-12-19 01:52:55,892 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 01:52:55,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1172101095] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:52:55,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 01:52:55,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 10 [2023-12-19 01:52:55,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482369314] [2023-12-19 01:52:55,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:52:55,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:52:55,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:52:55,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:52:55,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-19 01:52:55,893 INFO L87 Difference]: Start difference. First operand 47229 states and 49457 transitions. Second operand has 3 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:52:56,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:52:56,527 INFO L93 Difference]: Finished difference Result 96303 states and 100898 transitions. [2023-12-19 01:52:56,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:52:56,528 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 0 states have call successors, (0), 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 507 [2023-12-19 01:52:56,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:52:56,581 INFO L225 Difference]: With dead ends: 96303 [2023-12-19 01:52:56,581 INFO L226 Difference]: Without dead ends: 47248 [2023-12-19 01:52:56,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 514 GetRequests, 506 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-19 01:52:56,612 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 98 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 01:52:56,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 294 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 486 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 01:52:56,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47248 states. [2023-12-19 01:52:56,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47248 to 42983. [2023-12-19 01:52:57,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42983 states, 42982 states have (on average 1.047996835884789) internal successors, (45045), 42982 states have internal predecessors, (45045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:52:57,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42983 states to 42983 states and 45045 transitions. [2023-12-19 01:52:57,053 INFO L78 Accepts]: Start accepts. Automaton has 42983 states and 45045 transitions. Word has length 507 [2023-12-19 01:52:57,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:52:57,054 INFO L495 AbstractCegarLoop]: Abstraction has 42983 states and 45045 transitions. [2023-12-19 01:52:57,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:52:57,054 INFO L276 IsEmpty]: Start isEmpty. Operand 42983 states and 45045 transitions. [2023-12-19 01:52:57,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 511 [2023-12-19 01:52:57,069 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:52:57,069 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-19 01:52:57,076 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-19 01:52:57,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:52:57,276 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:52:57,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:52:57,277 INFO L85 PathProgramCache]: Analyzing trace with hash -502245777, now seen corresponding path program 1 times [2023-12-19 01:52:57,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:52:57,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565536188] [2023-12-19 01:52:57,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:52:57,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:52:57,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:52:58,605 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 448 proven. 216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:52:58,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:52:58,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565536188] [2023-12-19 01:52:58,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565536188] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:52:58,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919205503] [2023-12-19 01:52:58,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:52:58,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:52:58,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:52:58,607 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 01:52:58,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-19 01:52:58,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:52:58,858 INFO L262 TraceCheckSpWp]: Trace formula consists of 750 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 01:52:58,863 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:52:59,133 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 569 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-12-19 01:52:59,134 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 01:52:59,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919205503] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:52:59,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 01:52:59,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2023-12-19 01:52:59,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027057311] [2023-12-19 01:52:59,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:52:59,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:52:59,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:52:59,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:52:59,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:52:59,136 INFO L87 Difference]: Start difference. First operand 42983 states and 45045 transitions. Second operand has 3 states, 3 states have (on average 138.66666666666666) internal successors, (416), 3 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:52:59,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:52:59,805 INFO L93 Difference]: Finished difference Result 85164 states and 89251 transitions. [2023-12-19 01:52:59,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:52:59,806 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 138.66666666666666) internal successors, (416), 3 states have internal predecessors, (416), 0 states have call successors, (0), 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 510 [2023-12-19 01:52:59,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:52:59,853 INFO L225 Difference]: With dead ends: 85164 [2023-12-19 01:52:59,853 INFO L226 Difference]: Without dead ends: 42791 [2023-12-19 01:52:59,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 515 GetRequests, 510 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:52:59,883 INFO L413 NwaCegarLoop]: 305 mSDtfsCounter, 88 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 522 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 01:52:59,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 319 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 522 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 01:52:59,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42791 states. [2023-12-19 01:53:00,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42791 to 40545. [2023-12-19 01:53:00,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40545 states, 40544 states have (on average 1.04659135753749) internal successors, (42433), 40544 states have internal predecessors, (42433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:53:00,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40545 states to 40545 states and 42433 transitions. [2023-12-19 01:53:00,320 INFO L78 Accepts]: Start accepts. Automaton has 40545 states and 42433 transitions. Word has length 510 [2023-12-19 01:53:00,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:53:00,320 INFO L495 AbstractCegarLoop]: Abstraction has 40545 states and 42433 transitions. [2023-12-19 01:53:00,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.66666666666666) internal successors, (416), 3 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:53:00,320 INFO L276 IsEmpty]: Start isEmpty. Operand 40545 states and 42433 transitions. [2023-12-19 01:53:00,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2023-12-19 01:53:00,334 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:53:00,334 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:53:00,339 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-19 01:53:00,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2023-12-19 01:53:00,540 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:53:00,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:53:00,540 INFO L85 PathProgramCache]: Analyzing trace with hash 2074555458, now seen corresponding path program 1 times [2023-12-19 01:53:00,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:53:00,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007928648] [2023-12-19 01:53:00,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:53:00,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:53:00,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:53:01,058 INFO L134 CoverageAnalysis]: Checked inductivity of 975 backedges. 675 proven. 158 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2023-12-19 01:53:01,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:53:01,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007928648] [2023-12-19 01:53:01,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007928648] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:53:01,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777167743] [2023-12-19 01:53:01,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:53:01,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:53:01,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:53:01,060 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 01:53:01,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-19 01:53:01,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:53:01,284 INFO L262 TraceCheckSpWp]: Trace formula consists of 876 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 01:53:01,288 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:53:01,395 INFO L134 CoverageAnalysis]: Checked inductivity of 975 backedges. 700 proven. 0 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2023-12-19 01:53:01,396 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 01:53:01,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1777167743] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:53:01,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 01:53:01,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-12-19 01:53:01,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119263720] [2023-12-19 01:53:01,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:53:01,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:53:01,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:53:01,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:53:01,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 01:53:01,397 INFO L87 Difference]: Start difference. First operand 40545 states and 42433 transitions. Second operand has 3 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:53:01,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:53:01,769 INFO L93 Difference]: Finished difference Result 107935 states and 113018 transitions. [2023-12-19 01:53:01,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:53:01,770 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 0 states have call successors, (0), 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 530 [2023-12-19 01:53:01,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:53:01,845 INFO L225 Difference]: With dead ends: 107935 [2023-12-19 01:53:01,845 INFO L226 Difference]: Without dead ends: 67391 [2023-12-19 01:53:01,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 534 GetRequests, 530 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 01:53:01,877 INFO L413 NwaCegarLoop]: 499 mSDtfsCounter, 189 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:53:01,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 709 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 01:53:01,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67391 states. [2023-12-19 01:53:02,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67391 to 64143. [2023-12-19 01:53:02,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64143 states, 64142 states have (on average 1.0442767609366717) internal successors, (66982), 64142 states have internal predecessors, (66982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:53:03,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64143 states to 64143 states and 66982 transitions. [2023-12-19 01:53:03,021 INFO L78 Accepts]: Start accepts. Automaton has 64143 states and 66982 transitions. Word has length 530 [2023-12-19 01:53:03,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:53:03,021 INFO L495 AbstractCegarLoop]: Abstraction has 64143 states and 66982 transitions. [2023-12-19 01:53:03,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:53:03,021 INFO L276 IsEmpty]: Start isEmpty. Operand 64143 states and 66982 transitions. [2023-12-19 01:53:03,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 534 [2023-12-19 01:53:03,040 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:53:03,040 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:53:03,046 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-19 01:53:03,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-12-19 01:53:03,246 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:53:03,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:53:03,247 INFO L85 PathProgramCache]: Analyzing trace with hash -134931862, now seen corresponding path program 1 times [2023-12-19 01:53:03,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:53:03,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351844057] [2023-12-19 01:53:03,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:53:03,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:53:03,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:53:03,631 INFO L134 CoverageAnalysis]: Checked inductivity of 845 backedges. 569 proven. 142 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2023-12-19 01:53:03,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:53:03,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351844057] [2023-12-19 01:53:03,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351844057] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:53:03,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2085793147] [2023-12-19 01:53:03,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:53:03,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:53:03,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:53:03,632 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 01:53:03,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-19 01:53:03,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:53:03,930 INFO L262 TraceCheckSpWp]: Trace formula consists of 889 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 01:53:03,935 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:53:03,996 INFO L134 CoverageAnalysis]: Checked inductivity of 845 backedges. 634 proven. 0 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2023-12-19 01:53:03,996 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 01:53:03,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2085793147] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:53:03,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 01:53:03,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-12-19 01:53:03,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953799339] [2023-12-19 01:53:03,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:53:03,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:53:03,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:53:03,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:53:03,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-19 01:53:03,998 INFO L87 Difference]: Start difference. First operand 64143 states and 66982 transitions. Second operand has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:53:04,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:53:04,686 INFO L93 Difference]: Finished difference Result 119335 states and 124669 transitions. [2023-12-19 01:53:04,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:53:04,687 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 533 [2023-12-19 01:53:04,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:53:04,763 INFO L225 Difference]: With dead ends: 119335 [2023-12-19 01:53:04,764 INFO L226 Difference]: Without dead ends: 60892 [2023-12-19 01:53:04,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 536 GetRequests, 533 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-19 01:53:04,804 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 190 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 01:53:04,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 66 Invalid, 523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 473 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 01:53:04,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60892 states.