/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/combinations/pals_lcr.6_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 01:06:27,568 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 01:06:27,652 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 01:06:27,658 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 01:06:27,659 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 01:06:27,692 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 01:06:27,692 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 01:06:27,692 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 01:06:27,693 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 01:06:27,698 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 01:06:27,698 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 01:06:27,699 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 01:06:27,699 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 01:06:27,699 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 01:06:27,700 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 01:06:27,700 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 01:06:27,700 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 01:06:27,700 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 01:06:27,701 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 01:06:27,701 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 01:06:27,701 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 01:06:27,702 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 01:06:27,702 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 01:06:27,702 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 01:06:27,702 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 01:06:27,702 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 01:06:27,703 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 01:06:27,703 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 01:06:27,703 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 01:06:27,704 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 01:06:27,705 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 01:06:27,705 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 01:06:27,705 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 01:06:27,705 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 01:06:27,705 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 01:06:27,705 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 01:06:27,706 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 01:06:27,706 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 01:06:27,706 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 01:06:27,706 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 01:06:27,706 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 01:06:27,706 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 01:06:27,707 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 01:06:27,707 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 01:06:27,951 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 01:06:27,967 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 01:06:27,969 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 01:06:27,970 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 01:06:27,976 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 01:06:27,977 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.6_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c [2023-12-19 01:06:29,178 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 01:06:29,658 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 01:06:29,660 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.6_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c [2023-12-19 01:06:29,693 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71b59c74b/999df0cccc3d4590beb75086f827378c/FLAGde41582a0 [2023-12-19 01:06:29,711 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71b59c74b/999df0cccc3d4590beb75086f827378c [2023-12-19 01:06:29,714 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 01:06:29,715 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 01:06:29,716 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 01:06:29,716 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 01:06:29,720 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 01:06:29,721 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 01:06:29" (1/1) ... [2023-12-19 01:06:29,722 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18ea483 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:06:29, skipping insertion in model container [2023-12-19 01:06:29,722 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 01:06:29" (1/1) ... [2023-12-19 01:06:29,839 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 01:06:30,250 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.6_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c[15584,15597] [2023-12-19 01:06:30,317 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.6_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c[21139,21152] [2023-12-19 01:06:31,003 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 01:06:31,016 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 01:06:31,058 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.6_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c[15584,15597] [2023-12-19 01:06:31,068 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.6_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c[21139,21152] [2023-12-19 01:06:31,438 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 01:06:31,464 INFO L206 MainTranslator]: Completed translation [2023-12-19 01:06:31,465 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:06:31 WrapperNode [2023-12-19 01:06:31,465 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 01:06:31,466 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 01:06:31,466 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 01:06:31,467 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 01:06:31,472 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:06:31" (1/1) ... [2023-12-19 01:06:31,531 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:06:31" (1/1) ... [2023-12-19 01:06:31,862 INFO L138 Inliner]: procedures = 38, calls = 23, calls flagged for inlining = 18, calls inlined = 18, statements flattened = 5149 [2023-12-19 01:06:31,863 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 01:06:31,863 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 01:06:31,863 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 01:06:31,863 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 01:06:31,873 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:06:31" (1/1) ... [2023-12-19 01:06:31,874 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:06:31" (1/1) ... [2023-12-19 01:06:31,935 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:06:31" (1/1) ... [2023-12-19 01:06:32,057 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 01:06:32,057 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:06:31" (1/1) ... [2023-12-19 01:06:32,057 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:06:31" (1/1) ... [2023-12-19 01:06:32,184 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:06:31" (1/1) ... [2023-12-19 01:06:32,215 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:06:31" (1/1) ... [2023-12-19 01:06:32,237 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:06:31" (1/1) ... [2023-12-19 01:06:32,256 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:06:31" (1/1) ... [2023-12-19 01:06:32,303 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 01:06:32,304 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 01:06:32,304 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 01:06:32,305 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 01:06:32,305 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:06:31" (1/1) ... [2023-12-19 01:06:32,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 01:06:32,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:06:32,341 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 01:06:32,360 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 01:06:32,375 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 01:06:32,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 01:06:32,376 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 01:06:32,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 01:06:32,509 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 01:06:32,512 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 01:06:36,368 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 01:06:36,436 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 01:06:36,436 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-19 01:06:36,437 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 01:06:36 BoogieIcfgContainer [2023-12-19 01:06:36,437 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 01:06:36,439 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 01:06:36,439 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 01:06:36,442 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 01:06:36,442 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 01:06:29" (1/3) ... [2023-12-19 01:06:36,443 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f437460 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 01:06:36, skipping insertion in model container [2023-12-19 01:06:36,443 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:06:31" (2/3) ... [2023-12-19 01:06:36,443 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f437460 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 01:06:36, skipping insertion in model container [2023-12-19 01:06:36,443 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 01:06:36" (3/3) ... [2023-12-19 01:06:36,445 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.6_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c [2023-12-19 01:06:36,461 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 01:06:36,461 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-19 01:06:36,524 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 01:06:36,529 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;@1d303533, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 01:06:36,529 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-19 01:06:36,537 INFO L276 IsEmpty]: Start isEmpty. Operand has 849 states, 846 states have (on average 1.9739952718676124) internal successors, (1670), 848 states have internal predecessors, (1670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:36,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-19 01:06:36,544 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:06:36,544 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:06:36,545 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:06:36,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:06:36,550 INFO L85 PathProgramCache]: Analyzing trace with hash -713532304, now seen corresponding path program 1 times [2023-12-19 01:06:36,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:06:36,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529339443] [2023-12-19 01:06:36,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:06:36,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:06:36,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:06:36,749 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 01:06:36,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:06:36,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529339443] [2023-12-19 01:06:36,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529339443] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:06:36,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:06:36,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 01:06:36,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717480170] [2023-12-19 01:06:36,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:06:36,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 01:06:36,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:06:36,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 01:06:36,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 01:06:36,795 INFO L87 Difference]: Start difference. First operand has 849 states, 846 states have (on average 1.9739952718676124) internal successors, (1670), 848 states have internal predecessors, (1670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:36,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:06:36,899 INFO L93 Difference]: Finished difference Result 1653 states and 3253 transitions. [2023-12-19 01:06:36,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 01:06:36,901 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-12-19 01:06:36,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:06:36,921 INFO L225 Difference]: With dead ends: 1653 [2023-12-19 01:06:36,922 INFO L226 Difference]: Without dead ends: 845 [2023-12-19 01:06:36,930 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 01:06:36,934 INFO L413 NwaCegarLoop]: 1598 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1598 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:06:36,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1598 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:06:36,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2023-12-19 01:06:37,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 845. [2023-12-19 01:06:37,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 843 states have (on average 1.896797153024911) internal successors, (1599), 844 states have internal predecessors, (1599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:37,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 1599 transitions. [2023-12-19 01:06:37,058 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 1599 transitions. Word has length 23 [2023-12-19 01:06:37,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:06:37,059 INFO L495 AbstractCegarLoop]: Abstraction has 845 states and 1599 transitions. [2023-12-19 01:06:37,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:37,059 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 1599 transitions. [2023-12-19 01:06:37,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-19 01:06:37,060 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:06:37,060 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:06:37,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-19 01:06:37,060 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:06:37,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:06:37,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1892491250, now seen corresponding path program 1 times [2023-12-19 01:06:37,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:06:37,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318322456] [2023-12-19 01:06:37,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:06:37,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:06:37,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:06:37,367 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 01:06:37,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:06:37,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318322456] [2023-12-19 01:06:37,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318322456] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:06:37,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:06:37,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 01:06:37,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713068441] [2023-12-19 01:06:37,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:06:37,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 01:06:37,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:06:37,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 01:06:37,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 01:06:37,375 INFO L87 Difference]: Start difference. First operand 845 states and 1599 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:37,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:06:37,467 INFO L93 Difference]: Finished difference Result 895 states and 1678 transitions. [2023-12-19 01:06:37,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 01:06:37,468 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-12-19 01:06:37,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:06:37,472 INFO L225 Difference]: With dead ends: 895 [2023-12-19 01:06:37,472 INFO L226 Difference]: Without dead ends: 845 [2023-12-19 01:06:37,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 01:06:37,473 INFO L413 NwaCegarLoop]: 1596 mSDtfsCounter, 0 mSDsluCounter, 3148 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4744 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:06:37,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4744 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 01:06:37,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2023-12-19 01:06:37,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 845. [2023-12-19 01:06:37,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 843 states have (on average 1.849347568208778) internal successors, (1559), 844 states have internal predecessors, (1559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:37,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 1559 transitions. [2023-12-19 01:06:37,490 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 1559 transitions. Word has length 23 [2023-12-19 01:06:37,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:06:37,491 INFO L495 AbstractCegarLoop]: Abstraction has 845 states and 1559 transitions. [2023-12-19 01:06:37,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:37,491 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 1559 transitions. [2023-12-19 01:06:37,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-19 01:06:37,496 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:06:37,497 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] [2023-12-19 01:06:37,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-19 01:06:37,497 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:06:37,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:06:37,504 INFO L85 PathProgramCache]: Analyzing trace with hash -308037014, now seen corresponding path program 1 times [2023-12-19 01:06:37,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:06:37,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399762637] [2023-12-19 01:06:37,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:06:37,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:06:37,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:06:37,631 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 01:06:37,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:06:37,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399762637] [2023-12-19 01:06:37,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399762637] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:06:37,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:06:37,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 01:06:37,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059131598] [2023-12-19 01:06:37,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:06:37,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:06:37,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:06:37,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:06:37,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:06:37,639 INFO L87 Difference]: Start difference. First operand 845 states and 1559 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states 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 01:06:40,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:06:40,730 INFO L93 Difference]: Finished difference Result 2349 states and 4432 transitions. [2023-12-19 01:06:40,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:06:40,731 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2023-12-19 01:06:40,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:06:40,737 INFO L225 Difference]: With dead ends: 2349 [2023-12-19 01:06:40,737 INFO L226 Difference]: Without dead ends: 1596 [2023-12-19 01:06:40,739 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 01:06:40,740 INFO L413 NwaCegarLoop]: 538 mSDtfsCounter, 891 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2277 mSolverCounterSat, 591 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 891 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 2868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 591 IncrementalHoareTripleChecker+Valid, 2277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:06:40,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [891 Valid, 545 Invalid, 2868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [591 Valid, 2277 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-19 01:06:40,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1596 states. [2023-12-19 01:06:40,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1596 to 1596. [2023-12-19 01:06:40,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1596 states, 1594 states have (on average 1.6223337515683813) internal successors, (2586), 1595 states have internal predecessors, (2586), 0 states have call successors, (0), 0 states 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 01:06:40,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1596 states to 1596 states and 2586 transitions. [2023-12-19 01:06:40,783 INFO L78 Accepts]: Start accepts. Automaton has 1596 states and 2586 transitions. Word has length 47 [2023-12-19 01:06:40,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:06:40,789 INFO L495 AbstractCegarLoop]: Abstraction has 1596 states and 2586 transitions. [2023-12-19 01:06:40,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states 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 01:06:40,789 INFO L276 IsEmpty]: Start isEmpty. Operand 1596 states and 2586 transitions. [2023-12-19 01:06:40,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-19 01:06:40,793 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:06:40,793 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:06:40,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-19 01:06:40,793 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:06:40,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:06:40,795 INFO L85 PathProgramCache]: Analyzing trace with hash -808348940, now seen corresponding path program 1 times [2023-12-19 01:06:40,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:06:40,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162520572] [2023-12-19 01:06:40,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:06:40,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:06:40,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:06:41,014 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 01:06:41,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:06:41,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162520572] [2023-12-19 01:06:41,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162520572] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:06:41,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:06:41,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 01:06:41,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501545453] [2023-12-19 01:06:41,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:06:41,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 01:06:41,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:06:41,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 01:06:41,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-19 01:06:41,017 INFO L87 Difference]: Start difference. First operand 1596 states and 2586 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:41,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:06:41,412 INFO L93 Difference]: Finished difference Result 2160 states and 3498 transitions. [2023-12-19 01:06:41,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-19 01:06:41,413 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-12-19 01:06:41,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:06:41,421 INFO L225 Difference]: With dead ends: 2160 [2023-12-19 01:06:41,421 INFO L226 Difference]: Without dead ends: 2113 [2023-12-19 01:06:41,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2023-12-19 01:06:41,429 INFO L413 NwaCegarLoop]: 1552 mSDtfsCounter, 9675 mSDsluCounter, 2072 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9675 SdHoareTripleChecker+Valid, 3624 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:06:41,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9675 Valid, 3624 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 01:06:41,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2113 states. [2023-12-19 01:06:41,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2113 to 1641. [2023-12-19 01:06:41,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1641 states, 1639 states have (on average 1.6223306894447833) internal successors, (2659), 1640 states have internal predecessors, (2659), 0 states have call successors, (0), 0 states 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 01:06:41,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1641 states to 1641 states and 2659 transitions. [2023-12-19 01:06:41,467 INFO L78 Accepts]: Start accepts. Automaton has 1641 states and 2659 transitions. Word has length 62 [2023-12-19 01:06:41,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:06:41,469 INFO L495 AbstractCegarLoop]: Abstraction has 1641 states and 2659 transitions. [2023-12-19 01:06:41,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:41,469 INFO L276 IsEmpty]: Start isEmpty. Operand 1641 states and 2659 transitions. [2023-12-19 01:06:41,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-19 01:06:41,470 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:06:41,470 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:06:41,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-19 01:06:41,470 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:06:41,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:06:41,471 INFO L85 PathProgramCache]: Analyzing trace with hash 431995268, now seen corresponding path program 1 times [2023-12-19 01:06:41,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:06:41,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299111524] [2023-12-19 01:06:41,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:06:41,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:06:41,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:06:41,576 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 01:06:41,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:06:41,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299111524] [2023-12-19 01:06:41,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299111524] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:06:41,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:06:41,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:06:41,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177722002] [2023-12-19 01:06:41,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:06:41,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:06:41,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:06:41,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:06:41,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:06:41,578 INFO L87 Difference]: Start difference. First operand 1641 states and 2659 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:41,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:06:41,615 INFO L93 Difference]: Finished difference Result 1814 states and 2938 transitions. [2023-12-19 01:06:41,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:06:41,616 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2023-12-19 01:06:41,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:06:41,623 INFO L225 Difference]: With dead ends: 1814 [2023-12-19 01:06:41,624 INFO L226 Difference]: Without dead ends: 1722 [2023-12-19 01:06:41,624 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 01:06:41,625 INFO L413 NwaCegarLoop]: 1554 mSDtfsCounter, 1488 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1488 SdHoareTripleChecker+Valid, 1624 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:06:41,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1488 Valid, 1624 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:06:41,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1722 states. [2023-12-19 01:06:41,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1722 to 1720. [2023-12-19 01:06:41,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1720 states, 1718 states have (on average 1.6210710128055879) internal successors, (2785), 1719 states have internal predecessors, (2785), 0 states have call successors, (0), 0 states 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 01:06:41,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1720 states to 1720 states and 2785 transitions. [2023-12-19 01:06:41,658 INFO L78 Accepts]: Start accepts. Automaton has 1720 states and 2785 transitions. Word has length 64 [2023-12-19 01:06:41,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:06:41,660 INFO L495 AbstractCegarLoop]: Abstraction has 1720 states and 2785 transitions. [2023-12-19 01:06:41,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:41,660 INFO L276 IsEmpty]: Start isEmpty. Operand 1720 states and 2785 transitions. [2023-12-19 01:06:41,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-19 01:06:41,662 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:06:41,662 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:06:41,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-19 01:06:41,663 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:06:41,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:06:41,663 INFO L85 PathProgramCache]: Analyzing trace with hash 434140220, now seen corresponding path program 1 times [2023-12-19 01:06:41,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:06:41,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186016698] [2023-12-19 01:06:41,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:06:41,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:06:41,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:06:41,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:06:41,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:06:41,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186016698] [2023-12-19 01:06:41,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186016698] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:06:41,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:06:41,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 01:06:41,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604532459] [2023-12-19 01:06:41,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:06:41,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 01:06:41,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:06:41,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 01:06:41,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-19 01:06:41,991 INFO L87 Difference]: Start difference. First operand 1720 states and 2785 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:42,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:06:42,245 INFO L93 Difference]: Finished difference Result 1893 states and 3061 transitions. [2023-12-19 01:06:42,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 01:06:42,246 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2023-12-19 01:06:42,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:06:42,253 INFO L225 Difference]: With dead ends: 1893 [2023-12-19 01:06:42,253 INFO L226 Difference]: Without dead ends: 1722 [2023-12-19 01:06:42,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2023-12-19 01:06:42,256 INFO L413 NwaCegarLoop]: 1548 mSDtfsCounter, 4510 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4510 SdHoareTripleChecker+Valid, 1915 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:06:42,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4510 Valid, 1915 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 01:06:42,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1722 states. [2023-12-19 01:06:42,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1722 to 1720. [2023-12-19 01:06:42,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1720 states, 1718 states have (on average 1.619906868451688) internal successors, (2783), 1719 states have internal predecessors, (2783), 0 states have call successors, (0), 0 states 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 01:06:42,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1720 states to 1720 states and 2783 transitions. [2023-12-19 01:06:42,306 INFO L78 Accepts]: Start accepts. Automaton has 1720 states and 2783 transitions. Word has length 64 [2023-12-19 01:06:42,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:06:42,307 INFO L495 AbstractCegarLoop]: Abstraction has 1720 states and 2783 transitions. [2023-12-19 01:06:42,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:42,307 INFO L276 IsEmpty]: Start isEmpty. Operand 1720 states and 2783 transitions. [2023-12-19 01:06:42,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-19 01:06:42,308 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:06:42,308 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:06:42,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-19 01:06:42,308 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:06:42,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:06:42,309 INFO L85 PathProgramCache]: Analyzing trace with hash 444744363, now seen corresponding path program 1 times [2023-12-19 01:06:42,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:06:42,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413944525] [2023-12-19 01:06:42,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:06:42,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:06:42,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:06:42,521 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 01:06:42,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:06:42,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413944525] [2023-12-19 01:06:42,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413944525] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:06:42,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:06:42,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 01:06:42,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568446069] [2023-12-19 01:06:42,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:06:42,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 01:06:42,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:06:42,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 01:06:42,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 01:06:42,524 INFO L87 Difference]: Start difference. First operand 1720 states and 2783 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:42,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:06:42,567 INFO L93 Difference]: Finished difference Result 1728 states and 2792 transitions. [2023-12-19 01:06:42,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 01:06:42,567 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2023-12-19 01:06:42,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:06:42,574 INFO L225 Difference]: With dead ends: 1728 [2023-12-19 01:06:42,574 INFO L226 Difference]: Without dead ends: 1726 [2023-12-19 01:06:42,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 01:06:42,576 INFO L413 NwaCegarLoop]: 1555 mSDtfsCounter, 1 mSDsluCounter, 3102 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4657 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:06:42,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4657 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:06:42,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1726 states. [2023-12-19 01:06:42,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1726 to 1724. [2023-12-19 01:06:42,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1724 states, 1722 states have (on average 1.6178861788617886) internal successors, (2786), 1723 states have internal predecessors, (2786), 0 states have call successors, (0), 0 states 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 01:06:42,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1724 states to 1724 states and 2786 transitions. [2023-12-19 01:06:42,614 INFO L78 Accepts]: Start accepts. Automaton has 1724 states and 2786 transitions. Word has length 65 [2023-12-19 01:06:42,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:06:42,615 INFO L495 AbstractCegarLoop]: Abstraction has 1724 states and 2786 transitions. [2023-12-19 01:06:42,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:42,615 INFO L276 IsEmpty]: Start isEmpty. Operand 1724 states and 2786 transitions. [2023-12-19 01:06:42,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-19 01:06:42,616 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:06:42,616 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:06:42,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-19 01:06:42,616 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:06:42,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:06:42,617 INFO L85 PathProgramCache]: Analyzing trace with hash 239452988, now seen corresponding path program 1 times [2023-12-19 01:06:42,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:06:42,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101773680] [2023-12-19 01:06:42,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:06:42,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:06:42,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:06:42,659 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 01:06:42,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:06:42,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101773680] [2023-12-19 01:06:42,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101773680] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:06:42,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:06:42,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:06:42,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064121549] [2023-12-19 01:06:42,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:06:42,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:06:42,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:06:42,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:06:42,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:06:42,661 INFO L87 Difference]: Start difference. First operand 1724 states and 2786 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:42,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:06:42,695 INFO L93 Difference]: Finished difference Result 1910 states and 3079 transitions. [2023-12-19 01:06:42,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:06:42,695 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-12-19 01:06:42,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:06:42,702 INFO L225 Difference]: With dead ends: 1910 [2023-12-19 01:06:42,702 INFO L226 Difference]: Without dead ends: 1814 [2023-12-19 01:06:42,702 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 01:06:42,703 INFO L413 NwaCegarLoop]: 1616 mSDtfsCounter, 1504 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1504 SdHoareTripleChecker+Valid, 1692 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:06:42,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1504 Valid, 1692 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:06:42,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1814 states. [2023-12-19 01:06:42,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1814 to 1812. [2023-12-19 01:06:42,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1812 states, 1810 states have (on average 1.6149171270718232) internal successors, (2923), 1811 states have internal predecessors, (2923), 0 states have call successors, (0), 0 states 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 01:06:42,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1812 states to 1812 states and 2923 transitions. [2023-12-19 01:06:42,739 INFO L78 Accepts]: Start accepts. Automaton has 1812 states and 2923 transitions. Word has length 66 [2023-12-19 01:06:42,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:06:42,739 INFO L495 AbstractCegarLoop]: Abstraction has 1812 states and 2923 transitions. [2023-12-19 01:06:42,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:42,739 INFO L276 IsEmpty]: Start isEmpty. Operand 1812 states and 2923 transitions. [2023-12-19 01:06:42,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-19 01:06:42,740 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:06:42,740 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:06:42,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-19 01:06:42,740 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:06:42,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:06:42,741 INFO L85 PathProgramCache]: Analyzing trace with hash -170933700, now seen corresponding path program 1 times [2023-12-19 01:06:42,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:06:42,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786188282] [2023-12-19 01:06:42,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:06:42,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:06:42,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:06:42,781 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 01:06:42,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:06:42,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786188282] [2023-12-19 01:06:42,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786188282] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:06:42,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:06:42,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:06:42,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229386507] [2023-12-19 01:06:42,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:06:42,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:06:42,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:06:42,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:06:42,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:06:42,784 INFO L87 Difference]: Start difference. First operand 1812 states and 2923 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:42,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:06:42,820 INFO L93 Difference]: Finished difference Result 2310 states and 3703 transitions. [2023-12-19 01:06:42,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:06:42,821 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-12-19 01:06:42,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:06:42,828 INFO L225 Difference]: With dead ends: 2310 [2023-12-19 01:06:42,828 INFO L226 Difference]: Without dead ends: 2049 [2023-12-19 01:06:42,829 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 01:06:42,829 INFO L413 NwaCegarLoop]: 1618 mSDtfsCounter, 1502 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1502 SdHoareTripleChecker+Valid, 1698 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:06:42,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1502 Valid, 1698 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:06:42,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2049 states. [2023-12-19 01:06:42,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2049 to 2047. [2023-12-19 01:06:42,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2047 states, 2045 states have (on average 1.6063569682151588) internal successors, (3285), 2046 states have internal predecessors, (3285), 0 states have call successors, (0), 0 states 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 01:06:42,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2047 states to 2047 states and 3285 transitions. [2023-12-19 01:06:42,874 INFO L78 Accepts]: Start accepts. Automaton has 2047 states and 3285 transitions. Word has length 66 [2023-12-19 01:06:42,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:06:42,874 INFO L495 AbstractCegarLoop]: Abstraction has 2047 states and 3285 transitions. [2023-12-19 01:06:42,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:42,874 INFO L276 IsEmpty]: Start isEmpty. Operand 2047 states and 3285 transitions. [2023-12-19 01:06:42,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-19 01:06:42,875 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:06:42,875 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:06:42,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-19 01:06:42,875 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:06:42,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:06:42,876 INFO L85 PathProgramCache]: Analyzing trace with hash -399572932, now seen corresponding path program 1 times [2023-12-19 01:06:42,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:06:42,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563456903] [2023-12-19 01:06:42,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:06:42,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:06:42,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:06:42,919 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 01:06:42,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:06:42,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563456903] [2023-12-19 01:06:42,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563456903] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:06:42,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:06:42,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:06:42,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594099682] [2023-12-19 01:06:42,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:06:42,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:06:42,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:06:42,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:06:42,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:06:42,921 INFO L87 Difference]: Start difference. First operand 2047 states and 3285 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:43,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:06:43,005 INFO L93 Difference]: Finished difference Result 2991 states and 4747 transitions. [2023-12-19 01:06:43,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:06:43,008 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-12-19 01:06:43,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:06:43,017 INFO L225 Difference]: With dead ends: 2991 [2023-12-19 01:06:43,017 INFO L226 Difference]: Without dead ends: 2495 [2023-12-19 01:06:43,018 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 01:06:43,018 INFO L413 NwaCegarLoop]: 1606 mSDtfsCounter, 1498 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1498 SdHoareTripleChecker+Valid, 1694 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:06:43,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1498 Valid, 1694 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:06:43,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2495 states. [2023-12-19 01:06:43,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2495 to 2493. [2023-12-19 01:06:43,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2493 states, 2491 states have (on average 1.5901244480128462) internal successors, (3961), 2492 states have internal predecessors, (3961), 0 states have call successors, (0), 0 states 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 01:06:43,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2493 states to 2493 states and 3961 transitions. [2023-12-19 01:06:43,078 INFO L78 Accepts]: Start accepts. Automaton has 2493 states and 3961 transitions. Word has length 66 [2023-12-19 01:06:43,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:06:43,079 INFO L495 AbstractCegarLoop]: Abstraction has 2493 states and 3961 transitions. [2023-12-19 01:06:43,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:43,079 INFO L276 IsEmpty]: Start isEmpty. Operand 2493 states and 3961 transitions. [2023-12-19 01:06:43,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-19 01:06:43,081 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:06:43,082 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:06:43,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-19 01:06:43,082 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:06:43,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:06:43,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1025228996, now seen corresponding path program 1 times [2023-12-19 01:06:43,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:06:43,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220779007] [2023-12-19 01:06:43,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:06:43,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:06:43,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:06:43,133 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 01:06:43,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:06:43,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220779007] [2023-12-19 01:06:43,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220779007] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:06:43,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:06:43,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:06:43,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394333394] [2023-12-19 01:06:43,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:06:43,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:06:43,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:06:43,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:06:43,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:06:43,135 INFO L87 Difference]: Start difference. First operand 2493 states and 3961 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:43,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:06:43,196 INFO L93 Difference]: Finished difference Result 4281 states and 6691 transitions. [2023-12-19 01:06:43,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:06:43,197 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-12-19 01:06:43,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:06:43,209 INFO L225 Difference]: With dead ends: 4281 [2023-12-19 01:06:43,209 INFO L226 Difference]: Without dead ends: 3339 [2023-12-19 01:06:43,212 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 01:06:43,213 INFO L413 NwaCegarLoop]: 1604 mSDtfsCounter, 1496 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1496 SdHoareTripleChecker+Valid, 1696 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:06:43,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1496 Valid, 1696 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:06:43,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3339 states. [2023-12-19 01:06:43,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3339 to 3337. [2023-12-19 01:06:43,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3337 states, 3335 states have (on average 1.5643178410794603) internal successors, (5217), 3336 states have internal predecessors, (5217), 0 states have call successors, (0), 0 states 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 01:06:43,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3337 states to 3337 states and 5217 transitions. [2023-12-19 01:06:43,299 INFO L78 Accepts]: Start accepts. Automaton has 3337 states and 5217 transitions. Word has length 66 [2023-12-19 01:06:43,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:06:43,299 INFO L495 AbstractCegarLoop]: Abstraction has 3337 states and 5217 transitions. [2023-12-19 01:06:43,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:43,299 INFO L276 IsEmpty]: Start isEmpty. Operand 3337 states and 5217 transitions. [2023-12-19 01:06:43,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-19 01:06:43,300 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:06:43,300 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:06:43,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-19 01:06:43,300 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:06:43,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:06:43,301 INFO L85 PathProgramCache]: Analyzing trace with hash -136495556, now seen corresponding path program 1 times [2023-12-19 01:06:43,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:06:43,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394789769] [2023-12-19 01:06:43,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:06:43,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:06:43,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:06:43,343 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 01:06:43,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:06:43,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394789769] [2023-12-19 01:06:43,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394789769] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:06:43,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:06:43,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:06:43,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761919431] [2023-12-19 01:06:43,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:06:43,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:06:43,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:06:43,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:06:43,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:06:43,345 INFO L87 Difference]: Start difference. First operand 3337 states and 5217 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:43,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:06:43,433 INFO L93 Difference]: Finished difference Result 6717 states and 10291 transitions. [2023-12-19 01:06:43,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:06:43,434 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-12-19 01:06:43,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:06:43,451 INFO L225 Difference]: With dead ends: 6717 [2023-12-19 01:06:43,451 INFO L226 Difference]: Without dead ends: 4931 [2023-12-19 01:06:43,455 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 01:06:43,456 INFO L413 NwaCegarLoop]: 1602 mSDtfsCounter, 1494 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1494 SdHoareTripleChecker+Valid, 1698 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:06:43,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1494 Valid, 1698 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:06:43,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4931 states. [2023-12-19 01:06:43,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4931 to 4929. [2023-12-19 01:06:43,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4929 states, 4927 states have (on average 1.5297341181246193) internal successors, (7537), 4928 states have internal predecessors, (7537), 0 states have call successors, (0), 0 states 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 01:06:43,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4929 states to 4929 states and 7537 transitions. [2023-12-19 01:06:43,595 INFO L78 Accepts]: Start accepts. Automaton has 4929 states and 7537 transitions. Word has length 66 [2023-12-19 01:06:43,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:06:43,595 INFO L495 AbstractCegarLoop]: Abstraction has 4929 states and 7537 transitions. [2023-12-19 01:06:43,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:43,596 INFO L276 IsEmpty]: Start isEmpty. Operand 4929 states and 7537 transitions. [2023-12-19 01:06:43,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-19 01:06:43,596 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:06:43,597 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:06:43,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-19 01:06:43,597 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:06:43,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:06:43,597 INFO L85 PathProgramCache]: Analyzing trace with hash -439516868, now seen corresponding path program 1 times [2023-12-19 01:06:43,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:06:43,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020194049] [2023-12-19 01:06:43,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:06:43,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:06:43,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:06:43,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:06:43,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:06:43,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020194049] [2023-12-19 01:06:43,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020194049] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:06:43,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:06:43,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:06:43,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193968347] [2023-12-19 01:06:43,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:06:43,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:06:43,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:06:43,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:06:43,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:06:43,642 INFO L87 Difference]: Start difference. First operand 4929 states and 7537 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:43,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:06:43,787 INFO L93 Difference]: Finished difference Result 11301 states and 16915 transitions. [2023-12-19 01:06:43,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:06:43,788 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-12-19 01:06:43,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:06:43,802 INFO L225 Difference]: With dead ends: 11301 [2023-12-19 01:06:43,802 INFO L226 Difference]: Without dead ends: 7923 [2023-12-19 01:06:43,807 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 01:06:43,808 INFO L413 NwaCegarLoop]: 1616 mSDtfsCounter, 1500 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1500 SdHoareTripleChecker+Valid, 1700 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:06:43,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1500 Valid, 1700 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:06:43,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7923 states. [2023-12-19 01:06:44,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7923 to 7921. [2023-12-19 01:06:44,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7921 states, 7919 states have (on average 1.4892031822199772) internal successors, (11793), 7920 states have internal predecessors, (11793), 0 states have call successors, (0), 0 states 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 01:06:44,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7921 states to 7921 states and 11793 transitions. [2023-12-19 01:06:44,137 INFO L78 Accepts]: Start accepts. Automaton has 7921 states and 11793 transitions. Word has length 66 [2023-12-19 01:06:44,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:06:44,137 INFO L495 AbstractCegarLoop]: Abstraction has 7921 states and 11793 transitions. [2023-12-19 01:06:44,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:44,137 INFO L276 IsEmpty]: Start isEmpty. Operand 7921 states and 11793 transitions. [2023-12-19 01:06:44,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-19 01:06:44,140 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:06:44,140 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:06:44,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-19 01:06:44,141 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:06:44,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:06:44,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1981614661, now seen corresponding path program 1 times [2023-12-19 01:06:44,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:06:44,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062168954] [2023-12-19 01:06:44,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:06:44,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:06:44,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:06:44,339 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 01:06:44,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:06:44,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062168954] [2023-12-19 01:06:44,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062168954] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:06:44,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:06:44,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 01:06:44,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850980206] [2023-12-19 01:06:44,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:06:44,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 01:06:44,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:06:44,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 01:06:44,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-19 01:06:44,341 INFO L87 Difference]: Start difference. First operand 7921 states and 11793 transitions. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:45,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:06:45,386 INFO L93 Difference]: Finished difference Result 45567 states and 66616 transitions. [2023-12-19 01:06:45,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 01:06:45,387 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2023-12-19 01:06:45,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:06:45,476 INFO L225 Difference]: With dead ends: 45567 [2023-12-19 01:06:45,477 INFO L226 Difference]: Without dead ends: 41085 [2023-12-19 01:06:45,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-19 01:06:45,494 INFO L413 NwaCegarLoop]: 1628 mSDtfsCounter, 8061 mSDsluCounter, 2336 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8061 SdHoareTripleChecker+Valid, 3964 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:06:45,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8061 Valid, 3964 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 01:06:45,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41085 states. [2023-12-19 01:06:46,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41085 to 13361. [2023-12-19 01:06:46,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13361 states, 13359 states have (on average 1.4696459315817052) internal successors, (19633), 13360 states have internal predecessors, (19633), 0 states have call successors, (0), 0 states 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 01:06:46,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13361 states to 13361 states and 19633 transitions. [2023-12-19 01:06:46,152 INFO L78 Accepts]: Start accepts. Automaton has 13361 states and 19633 transitions. Word has length 86 [2023-12-19 01:06:46,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:06:46,153 INFO L495 AbstractCegarLoop]: Abstraction has 13361 states and 19633 transitions. [2023-12-19 01:06:46,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:46,153 INFO L276 IsEmpty]: Start isEmpty. Operand 13361 states and 19633 transitions. [2023-12-19 01:06:46,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-19 01:06:46,157 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:06:46,157 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:06:46,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-19 01:06:46,157 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:06:46,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:06:46,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1902965947, now seen corresponding path program 1 times [2023-12-19 01:06:46,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:06:46,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492927549] [2023-12-19 01:06:46,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:06:46,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:06:46,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:06:46,316 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-19 01:06:46,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:06:46,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492927549] [2023-12-19 01:06:46,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492927549] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:06:46,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:06:46,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 01:06:46,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146433589] [2023-12-19 01:06:46,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:06:46,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 01:06:46,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:06:46,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 01:06:46,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-19 01:06:46,319 INFO L87 Difference]: Start difference. First operand 13361 states and 19633 transitions. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:47,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:06:47,324 INFO L93 Difference]: Finished difference Result 51935 states and 75832 transitions. [2023-12-19 01:06:47,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 01:06:47,325 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2023-12-19 01:06:47,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:06:47,419 INFO L225 Difference]: With dead ends: 51935 [2023-12-19 01:06:47,420 INFO L226 Difference]: Without dead ends: 45565 [2023-12-19 01:06:47,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-19 01:06:47,444 INFO L413 NwaCegarLoop]: 1627 mSDtfsCounter, 8061 mSDsluCounter, 2331 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8061 SdHoareTripleChecker+Valid, 3958 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:06:47,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8061 Valid, 3958 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 01:06:47,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45565 states. [2023-12-19 01:06:48,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45565 to 21969. [2023-12-19 01:06:48,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21969 states, 21967 states have (on average 1.4575044384758957) internal successors, (32017), 21968 states have internal predecessors, (32017), 0 states have call successors, (0), 0 states 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 01:06:48,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21969 states to 21969 states and 32017 transitions. [2023-12-19 01:06:48,392 INFO L78 Accepts]: Start accepts. Automaton has 21969 states and 32017 transitions. Word has length 86 [2023-12-19 01:06:48,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:06:48,392 INFO L495 AbstractCegarLoop]: Abstraction has 21969 states and 32017 transitions. [2023-12-19 01:06:48,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:48,393 INFO L276 IsEmpty]: Start isEmpty. Operand 21969 states and 32017 transitions. [2023-12-19 01:06:48,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-19 01:06:48,397 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:06:48,398 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:06:48,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-19 01:06:48,398 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:06:48,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:06:48,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1674326715, now seen corresponding path program 1 times [2023-12-19 01:06:48,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:06:48,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082208289] [2023-12-19 01:06:48,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:06:48,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:06:48,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:06:48,586 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-19 01:06:48,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:06:48,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082208289] [2023-12-19 01:06:48,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082208289] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:06:48,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:06:48,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 01:06:48,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257843276] [2023-12-19 01:06:48,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:06:48,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 01:06:48,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:06:48,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 01:06:48,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-19 01:06:48,591 INFO L87 Difference]: Start difference. First operand 21969 states and 32017 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:49,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:06:49,973 INFO L93 Difference]: Finished difference Result 58303 states and 85016 transitions. [2023-12-19 01:06:49,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 01:06:49,974 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2023-12-19 01:06:49,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:06:50,070 INFO L225 Difference]: With dead ends: 58303 [2023-12-19 01:06:50,071 INFO L226 Difference]: Without dead ends: 51933 [2023-12-19 01:06:50,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-19 01:06:50,088 INFO L413 NwaCegarLoop]: 1625 mSDtfsCounter, 8101 mSDsluCounter, 2350 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8101 SdHoareTripleChecker+Valid, 3975 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:06:50,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8101 Valid, 3975 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 01:06:50,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51933 states. [2023-12-19 01:06:50,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51933 to 28337. [2023-12-19 01:06:50,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28337 states, 28335 states have (on average 1.4540674077995412) internal successors, (41201), 28336 states have internal predecessors, (41201), 0 states have call successors, (0), 0 states 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 01:06:51,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28337 states to 28337 states and 41201 transitions. [2023-12-19 01:06:51,025 INFO L78 Accepts]: Start accepts. Automaton has 28337 states and 41201 transitions. Word has length 86 [2023-12-19 01:06:51,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:06:51,025 INFO L495 AbstractCegarLoop]: Abstraction has 28337 states and 41201 transitions. [2023-12-19 01:06:51,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:51,026 INFO L276 IsEmpty]: Start isEmpty. Operand 28337 states and 41201 transitions. [2023-12-19 01:06:51,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-19 01:06:51,030 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:06:51,031 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:06:51,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-19 01:06:51,031 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:06:51,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:06:51,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1048670651, now seen corresponding path program 1 times [2023-12-19 01:06:51,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:06:51,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467257305] [2023-12-19 01:06:51,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:06:51,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:06:51,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:06:51,236 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-19 01:06:51,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:06:51,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467257305] [2023-12-19 01:06:51,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467257305] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:06:51,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:06:51,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 01:06:51,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190126084] [2023-12-19 01:06:51,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:06:51,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 01:06:51,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:06:51,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 01:06:51,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-19 01:06:51,239 INFO L87 Difference]: Start difference. First operand 28337 states and 41201 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:52,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:06:52,736 INFO L93 Difference]: Finished difference Result 64671 states and 94200 transitions. [2023-12-19 01:06:52,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 01:06:52,736 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2023-12-19 01:06:52,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:06:52,846 INFO L225 Difference]: With dead ends: 64671 [2023-12-19 01:06:52,846 INFO L226 Difference]: Without dead ends: 58301 [2023-12-19 01:06:52,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-19 01:06:52,869 INFO L413 NwaCegarLoop]: 1623 mSDtfsCounter, 8155 mSDsluCounter, 2315 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8155 SdHoareTripleChecker+Valid, 3938 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:06:52,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8155 Valid, 3938 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 01:06:52,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58301 states. [2023-12-19 01:06:54,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58301 to 34705. [2023-12-19 01:06:54,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34705 states, 34703 states have (on average 1.4518917672823675) internal successors, (50385), 34704 states have internal predecessors, (50385), 0 states have call successors, (0), 0 states 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 01:06:54,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34705 states to 34705 states and 50385 transitions. [2023-12-19 01:06:54,173 INFO L78 Accepts]: Start accepts. Automaton has 34705 states and 50385 transitions. Word has length 86 [2023-12-19 01:06:54,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:06:54,173 INFO L495 AbstractCegarLoop]: Abstraction has 34705 states and 50385 transitions. [2023-12-19 01:06:54,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:54,174 INFO L276 IsEmpty]: Start isEmpty. Operand 34705 states and 50385 transitions. [2023-12-19 01:06:54,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-19 01:06:54,178 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:06:54,178 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:06:54,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-19 01:06:54,178 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:06:54,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:06:54,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1937404091, now seen corresponding path program 1 times [2023-12-19 01:06:54,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:06:54,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780031543] [2023-12-19 01:06:54,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:06:54,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:06:54,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:06:54,364 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-19 01:06:54,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:06:54,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780031543] [2023-12-19 01:06:54,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780031543] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:06:54,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:06:54,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 01:06:54,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014753492] [2023-12-19 01:06:54,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:06:54,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 01:06:54,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:06:54,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 01:06:54,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-19 01:06:54,366 INFO L87 Difference]: Start difference. First operand 34705 states and 50385 transitions. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:56,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:06:56,152 INFO L93 Difference]: Finished difference Result 71039 states and 103384 transitions. [2023-12-19 01:06:56,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 01:06:56,152 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2023-12-19 01:06:56,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:06:56,242 INFO L225 Difference]: With dead ends: 71039 [2023-12-19 01:06:56,242 INFO L226 Difference]: Without dead ends: 64669 [2023-12-19 01:06:56,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-19 01:06:56,275 INFO L413 NwaCegarLoop]: 1623 mSDtfsCounter, 8071 mSDsluCounter, 2368 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8071 SdHoareTripleChecker+Valid, 3991 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:06:56,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8071 Valid, 3991 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 01:06:56,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64669 states. [2023-12-19 01:06:57,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64669 to 41073. [2023-12-19 01:06:57,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41073 states, 41071 states have (on average 1.4503907866864698) internal successors, (59569), 41072 states have internal predecessors, (59569), 0 states have call successors, (0), 0 states 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 01:06:57,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41073 states to 41073 states and 59569 transitions. [2023-12-19 01:06:57,517 INFO L78 Accepts]: Start accepts. Automaton has 41073 states and 59569 transitions. Word has length 86 [2023-12-19 01:06:57,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:06:57,518 INFO L495 AbstractCegarLoop]: Abstraction has 41073 states and 59569 transitions. [2023-12-19 01:06:57,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:57,518 INFO L276 IsEmpty]: Start isEmpty. Operand 41073 states and 59569 transitions. [2023-12-19 01:06:57,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-19 01:06:57,523 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:06:57,523 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:06:57,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-19 01:06:57,523 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:06:57,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:06:57,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1634382779, now seen corresponding path program 1 times [2023-12-19 01:06:57,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:06:57,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353845065] [2023-12-19 01:06:57,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:06:57,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:06:57,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:06:57,682 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-19 01:06:57,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:06:57,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353845065] [2023-12-19 01:06:57,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353845065] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:06:57,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:06:57,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 01:06:57,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175460184] [2023-12-19 01:06:57,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:06:57,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 01:06:57,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:06:57,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 01:06:57,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-19 01:06:57,685 INFO L87 Difference]: Start difference. First operand 41073 states and 59569 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:59,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:06:59,501 INFO L93 Difference]: Finished difference Result 77407 states and 112568 transitions. [2023-12-19 01:06:59,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 01:06:59,501 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2023-12-19 01:06:59,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:06:59,588 INFO L225 Difference]: With dead ends: 77407 [2023-12-19 01:06:59,589 INFO L226 Difference]: Without dead ends: 71037 [2023-12-19 01:06:59,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-19 01:06:59,606 INFO L413 NwaCegarLoop]: 1622 mSDtfsCounter, 8010 mSDsluCounter, 2489 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8010 SdHoareTripleChecker+Valid, 4111 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:06:59,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8010 Valid, 4111 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 01:06:59,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71037 states. [2023-12-19 01:07:00,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71037 to 47441. [2023-12-19 01:07:00,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47441 states, 47439 states have (on average 1.449292775986003) internal successors, (68753), 47440 states have internal predecessors, (68753), 0 states have call successors, (0), 0 states 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 01:07:01,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47441 states to 47441 states and 68753 transitions. [2023-12-19 01:07:01,036 INFO L78 Accepts]: Start accepts. Automaton has 47441 states and 68753 transitions. Word has length 86 [2023-12-19 01:07:01,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:07:01,036 INFO L495 AbstractCegarLoop]: Abstraction has 47441 states and 68753 transitions. [2023-12-19 01:07:01,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:07:01,036 INFO L276 IsEmpty]: Start isEmpty. Operand 47441 states and 68753 transitions. [2023-12-19 01:07:01,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-19 01:07:01,041 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:07:01,041 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:07:01,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-19 01:07:01,041 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:07:01,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:07:01,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1298476795, now seen corresponding path program 1 times [2023-12-19 01:07:01,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:07:01,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136315509] [2023-12-19 01:07:01,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:07:01,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:07:01,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:07:01,133 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:07:01,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:07:01,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136315509] [2023-12-19 01:07:01,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136315509] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:07:01,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:07:01,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:07:01,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896711432] [2023-12-19 01:07:01,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:07:01,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:07:01,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:07:01,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:07:01,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:07:01,135 INFO L87 Difference]: Start difference. First operand 47441 states and 68753 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:07:02,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:07:02,469 INFO L93 Difference]: Finished difference Result 93333 states and 134995 transitions. [2023-12-19 01:07:02,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:07:02,469 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2023-12-19 01:07:02,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:07:02,523 INFO L225 Difference]: With dead ends: 93333 [2023-12-19 01:07:02,524 INFO L226 Difference]: Without dead ends: 47443 [2023-12-19 01:07:02,554 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 01:07:02,556 INFO L413 NwaCegarLoop]: 1598 mSDtfsCounter, 53 mSDsluCounter, 1545 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 3143 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:07:02,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 3143 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:07:02,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47443 states. [2023-12-19 01:07:03,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47443 to 47441. [2023-12-19 01:07:03,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47441 states, 47439 states have (on average 1.4347899407660363) internal successors, (68065), 47440 states have internal predecessors, (68065), 0 states have call successors, (0), 0 states 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 01:07:04,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47441 states to 47441 states and 68065 transitions. [2023-12-19 01:07:04,050 INFO L78 Accepts]: Start accepts. Automaton has 47441 states and 68065 transitions. Word has length 87 [2023-12-19 01:07:04,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:07:04,050 INFO L495 AbstractCegarLoop]: Abstraction has 47441 states and 68065 transitions. [2023-12-19 01:07:04,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:07:04,051 INFO L276 IsEmpty]: Start isEmpty. Operand 47441 states and 68065 transitions. [2023-12-19 01:07:04,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-19 01:07:04,054 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:07:04,054 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:07:04,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-19 01:07:04,054 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:07:04,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:07:04,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1037402045, now seen corresponding path program 1 times [2023-12-19 01:07:04,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:07:04,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945688185] [2023-12-19 01:07:04,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:07:04,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:07:04,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:07:04,292 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:07:04,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:07:04,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945688185] [2023-12-19 01:07:04,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945688185] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:07:04,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:07:04,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:07:04,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090961083] [2023-12-19 01:07:04,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:07:04,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:07:04,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:07:04,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:07:04,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:07:04,295 INFO L87 Difference]: Start difference. First operand 47441 states and 68065 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:07:04,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:07:04,824 INFO L93 Difference]: Finished difference Result 64265 states and 92328 transitions. [2023-12-19 01:07:04,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:07:04,825 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2023-12-19 01:07:04,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:07:04,849 INFO L225 Difference]: With dead ends: 64265 [2023-12-19 01:07:04,850 INFO L226 Difference]: Without dead ends: 18375 [2023-12-19 01:07:04,880 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 01:07:04,881 INFO L413 NwaCegarLoop]: 1596 mSDtfsCounter, 47 mSDsluCounter, 1544 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 3140 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:07:04,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 3140 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:07:04,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18375 states. [2023-12-19 01:07:05,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18375 to 18368. [2023-12-19 01:07:05,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18368 states, 18366 states have (on average 1.4444081454862245) internal successors, (26528), 18367 states have internal predecessors, (26528), 0 states have call successors, (0), 0 states 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 01:07:05,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18368 states to 18368 states and 26528 transitions. [2023-12-19 01:07:05,538 INFO L78 Accepts]: Start accepts. Automaton has 18368 states and 26528 transitions. Word has length 88 [2023-12-19 01:07:05,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:07:05,538 INFO L495 AbstractCegarLoop]: Abstraction has 18368 states and 26528 transitions. [2023-12-19 01:07:05,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:07:05,538 INFO L276 IsEmpty]: Start isEmpty. Operand 18368 states and 26528 transitions. [2023-12-19 01:07:05,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-19 01:07:05,540 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:07:05,540 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:07:05,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-19 01:07:05,540 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:07:05,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:07:05,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1781311287, now seen corresponding path program 1 times [2023-12-19 01:07:05,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:07:05,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701185863] [2023-12-19 01:07:05,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:07:05,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:07:05,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:07:05,634 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:07:05,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:07:05,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701185863] [2023-12-19 01:07:05,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701185863] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:07:05,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:07:05,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:07:05,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684109531] [2023-12-19 01:07:05,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:07:05,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:07:05,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:07:05,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:07:05,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:07:05,636 INFO L87 Difference]: Start difference. First operand 18368 states and 26528 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:07:05,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:07:05,892 INFO L93 Difference]: Finished difference Result 26772 states and 38530 transitions. [2023-12-19 01:07:05,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:07:05,892 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2023-12-19 01:07:05,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:07:05,905 INFO L225 Difference]: With dead ends: 26772 [2023-12-19 01:07:05,905 INFO L226 Difference]: Without dead ends: 9970 [2023-12-19 01:07:05,917 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 01:07:05,918 INFO L413 NwaCegarLoop]: 1590 mSDtfsCounter, 49 mSDsluCounter, 1529 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 3119 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:07:05,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 3119 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:07:05,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9970 states. [2023-12-19 01:07:06,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9970 to 9968. [2023-12-19 01:07:06,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9968 states, 9966 states have (on average 1.4457154324703994) internal successors, (14408), 9967 states have internal predecessors, (14408), 0 states have call successors, (0), 0 states 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 01:07:06,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9968 states to 9968 states and 14408 transitions. [2023-12-19 01:07:06,157 INFO L78 Accepts]: Start accepts. Automaton has 9968 states and 14408 transitions. Word has length 89 [2023-12-19 01:07:06,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:07:06,158 INFO L495 AbstractCegarLoop]: Abstraction has 9968 states and 14408 transitions. [2023-12-19 01:07:06,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:07:06,158 INFO L276 IsEmpty]: Start isEmpty. Operand 9968 states and 14408 transitions. [2023-12-19 01:07:06,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-19 01:07:06,159 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:07:06,160 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:07:06,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-19 01:07:06,160 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:07:06,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:07:06,160 INFO L85 PathProgramCache]: Analyzing trace with hash 2081860631, now seen corresponding path program 1 times [2023-12-19 01:07:06,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:07:06,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365799023] [2023-12-19 01:07:06,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:07:06,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:07:06,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:07:06,240 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:07:06,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:07:06,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365799023] [2023-12-19 01:07:06,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365799023] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:07:06,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:07:06,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:07:06,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144839734] [2023-12-19 01:07:06,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:07:06,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:07:06,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:07:06,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:07:06,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:07:06,243 INFO L87 Difference]: Start difference. First operand 9968 states and 14408 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:07:06,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:07:06,371 INFO L93 Difference]: Finished difference Result 14172 states and 20350 transitions. [2023-12-19 01:07:06,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:07:06,371 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2023-12-19 01:07:06,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:07:06,376 INFO L225 Difference]: With dead ends: 14172 [2023-12-19 01:07:06,376 INFO L226 Difference]: Without dead ends: 5770 [2023-12-19 01:07:06,382 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 01:07:06,383 INFO L413 NwaCegarLoop]: 1583 mSDtfsCounter, 46 mSDsluCounter, 1521 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 3104 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:07:06,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 3104 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:07:06,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5770 states. [2023-12-19 01:07:06,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5770 to 5768. [2023-12-19 01:07:06,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5768 states, 5766 states have (on average 1.4582032604925426) internal successors, (8408), 5767 states have internal predecessors, (8408), 0 states have call successors, (0), 0 states 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 01:07:06,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5768 states to 5768 states and 8408 transitions. [2023-12-19 01:07:06,501 INFO L78 Accepts]: Start accepts. Automaton has 5768 states and 8408 transitions. Word has length 91 [2023-12-19 01:07:06,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:07:06,501 INFO L495 AbstractCegarLoop]: Abstraction has 5768 states and 8408 transitions. [2023-12-19 01:07:06,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:07:06,501 INFO L276 IsEmpty]: Start isEmpty. Operand 5768 states and 8408 transitions. [2023-12-19 01:07:06,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-19 01:07:06,502 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:07:06,503 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:07:06,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-19 01:07:06,503 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:07:06,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:07:06,503 INFO L85 PathProgramCache]: Analyzing trace with hash 207620325, now seen corresponding path program 1 times [2023-12-19 01:07:06,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:07:06,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883882478] [2023-12-19 01:07:06,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:07:06,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:07:06,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:07:06,658 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:07:06,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:07:06,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883882478] [2023-12-19 01:07:06,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883882478] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:07:06,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:07:06,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:07:06,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560944133] [2023-12-19 01:07:06,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:07:06,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:07:06,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:07:06,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:07:06,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:07:06,660 INFO L87 Difference]: Start difference. First operand 5768 states and 8408 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:07:06,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:07:06,739 INFO L93 Difference]: Finished difference Result 7872 states and 11350 transitions. [2023-12-19 01:07:06,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:07:06,739 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2023-12-19 01:07:06,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:07:06,743 INFO L225 Difference]: With dead ends: 7872 [2023-12-19 01:07:06,743 INFO L226 Difference]: Without dead ends: 3670 [2023-12-19 01:07:06,745 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 01:07:06,746 INFO L413 NwaCegarLoop]: 1576 mSDtfsCounter, 43 mSDsluCounter, 1513 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 3089 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:07:06,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 3089 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:07:06,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3670 states. [2023-12-19 01:07:06,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3670 to 3668. [2023-12-19 01:07:06,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3668 states, 3666 states have (on average 1.4833606110201856) internal successors, (5438), 3667 states have internal predecessors, (5438), 0 states have call successors, (0), 0 states 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 01:07:06,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3668 states to 3668 states and 5438 transitions. [2023-12-19 01:07:06,803 INFO L78 Accepts]: Start accepts. Automaton has 3668 states and 5438 transitions. Word has length 93 [2023-12-19 01:07:06,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:07:06,804 INFO L495 AbstractCegarLoop]: Abstraction has 3668 states and 5438 transitions. [2023-12-19 01:07:06,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:07:06,804 INFO L276 IsEmpty]: Start isEmpty. Operand 3668 states and 5438 transitions. [2023-12-19 01:07:06,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-19 01:07:06,805 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:07:06,805 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:07:06,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-19 01:07:06,805 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:07:06,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:07:06,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1099411661, now seen corresponding path program 1 times [2023-12-19 01:07:06,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:07:06,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257742628] [2023-12-19 01:07:06,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:07:06,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:07:06,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:07:06,885 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:07:06,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:07:06,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257742628] [2023-12-19 01:07:06,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257742628] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:07:06,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:07:06,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:07:06,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143297192] [2023-12-19 01:07:06,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:07:06,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:07:06,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:07:06,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:07:06,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:07:06,887 INFO L87 Difference]: Start difference. First operand 3668 states and 5438 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:07:06,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:07:06,938 INFO L93 Difference]: Finished difference Result 4722 states and 6895 transitions. [2023-12-19 01:07:06,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:07:06,939 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2023-12-19 01:07:06,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:07:06,942 INFO L225 Difference]: With dead ends: 4722 [2023-12-19 01:07:06,942 INFO L226 Difference]: Without dead ends: 2620 [2023-12-19 01:07:06,945 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 01:07:06,945 INFO L413 NwaCegarLoop]: 1569 mSDtfsCounter, 40 mSDsluCounter, 1505 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 3074 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:07:06,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 3074 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:07:06,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2620 states. [2023-12-19 01:07:06,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2620 to 2618. [2023-12-19 01:07:06,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2618 states, 2616 states have (on average 1.5168195718654434) internal successors, (3968), 2617 states have internal predecessors, (3968), 0 states have call successors, (0), 0 states 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 01:07:06,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2618 states to 2618 states and 3968 transitions. [2023-12-19 01:07:06,993 INFO L78 Accepts]: Start accepts. Automaton has 2618 states and 3968 transitions. Word has length 95 [2023-12-19 01:07:06,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:07:06,993 INFO L495 AbstractCegarLoop]: Abstraction has 2618 states and 3968 transitions. [2023-12-19 01:07:06,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:07:06,993 INFO L276 IsEmpty]: Start isEmpty. Operand 2618 states and 3968 transitions. [2023-12-19 01:07:06,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-19 01:07:06,994 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:07:06,994 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:07:06,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-19 01:07:06,994 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:07:06,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:07:06,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1010802943, now seen corresponding path program 1 times [2023-12-19 01:07:06,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:07:06,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952893362] [2023-12-19 01:07:06,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:07:06,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:07:07,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:07:07,902 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:07:07,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:07:07,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952893362] [2023-12-19 01:07:07,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952893362] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:07:07,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432063097] [2023-12-19 01:07:07,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:07:07,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:07:07,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:07:07,912 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 01:07:07,919 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 01:07:08,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:07:08,067 INFO L262 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-19 01:07:08,076 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:07:08,311 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 01:07:08,312 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 01:07:08,507 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 01:07:08,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [432063097] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 01:07:08,508 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 01:07:08,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 4] total 18 [2023-12-19 01:07:08,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977586555] [2023-12-19 01:07:08,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 01:07:08,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-19 01:07:08,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:07:08,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-19 01:07:08,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-12-19 01:07:08,512 INFO L87 Difference]: Start difference. First operand 2618 states and 3968 transitions. Second operand has 18 states, 18 states have (on average 15.38888888888889) internal successors, (277), 18 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:07:11,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:07:11,474 INFO L93 Difference]: Finished difference Result 11217 states and 15560 transitions. [2023-12-19 01:07:11,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-19 01:07:11,475 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 15.38888888888889) internal successors, (277), 18 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2023-12-19 01:07:11,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:07:11,485 INFO L225 Difference]: With dead ends: 11217 [2023-12-19 01:07:11,485 INFO L226 Difference]: Without dead ends: 10165 [2023-12-19 01:07:11,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1191 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=747, Invalid=3285, Unknown=0, NotChecked=0, Total=4032 [2023-12-19 01:07:11,488 INFO L413 NwaCegarLoop]: 1523 mSDtfsCounter, 14257 mSDsluCounter, 6451 mSDsCounter, 0 mSdLazyCounter, 920 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14257 SdHoareTripleChecker+Valid, 7974 SdHoareTripleChecker+Invalid, 969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 01:07:11,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14257 Valid, 7974 Invalid, 969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 920 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 01:07:11,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10165 states. [2023-12-19 01:07:11,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10165 to 9705. [2023-12-19 01:07:11,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9705 states, 9703 states have (on average 1.3705039678449964) internal successors, (13298), 9704 states have internal predecessors, (13298), 0 states have call successors, (0), 0 states 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 01:07:11,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9705 states to 9705 states and 13298 transitions. [2023-12-19 01:07:11,727 INFO L78 Accepts]: Start accepts. Automaton has 9705 states and 13298 transitions. Word has length 97 [2023-12-19 01:07:11,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:07:11,727 INFO L495 AbstractCegarLoop]: Abstraction has 9705 states and 13298 transitions. [2023-12-19 01:07:11,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 15.38888888888889) internal successors, (277), 18 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:07:11,727 INFO L276 IsEmpty]: Start isEmpty. Operand 9705 states and 13298 transitions. [2023-12-19 01:07:11,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-19 01:07:11,728 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:07:11,728 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:07:11,734 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 01:07:11,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-19 01:07:11,932 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:07:11,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:07:11,933 INFO L85 PathProgramCache]: Analyzing trace with hash 806498379, now seen corresponding path program 1 times [2023-12-19 01:07:11,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:07:11,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981489468] [2023-12-19 01:07:11,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:07:11,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:07:11,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:07:13,203 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:07:13,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:07:13,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981489468] [2023-12-19 01:07:13,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981489468] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:07:13,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1052054690] [2023-12-19 01:07:13,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:07:13,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:07:13,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:07:13,205 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 01:07:13,207 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 01:07:13,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:07:13,317 INFO L262 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-19 01:07:13,320 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:07:14,131 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:07:14,131 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 01:07:15,255 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:07:15,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1052054690] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 01:07:15,255 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 01:07:15,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 32 [2023-12-19 01:07:15,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713200540] [2023-12-19 01:07:15,255 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 01:07:15,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-19 01:07:15,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:07:15,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-19 01:07:15,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=810, Unknown=0, NotChecked=0, Total=992 [2023-12-19 01:07:15,257 INFO L87 Difference]: Start difference. First operand 9705 states and 13298 transitions. Second operand has 32 states, 32 states have (on average 8.0625) internal successors, (258), 32 states have internal predecessors, (258), 0 states have call successors, (0), 0 states 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 01:07:16,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:07:16,656 INFO L93 Difference]: Finished difference Result 27245 states and 36241 transitions. [2023-12-19 01:07:16,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-19 01:07:16,657 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 8.0625) internal successors, (258), 32 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2023-12-19 01:07:16,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:07:16,678 INFO L225 Difference]: With dead ends: 27245 [2023-12-19 01:07:16,679 INFO L226 Difference]: Without dead ends: 19484 [2023-12-19 01:07:16,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 466 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=528, Invalid=1728, Unknown=0, NotChecked=0, Total=2256 [2023-12-19 01:07:16,688 INFO L413 NwaCegarLoop]: 1523 mSDtfsCounter, 11118 mSDsluCounter, 5123 mSDsCounter, 0 mSdLazyCounter, 825 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11118 SdHoareTripleChecker+Valid, 6646 SdHoareTripleChecker+Invalid, 848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 01:07:16,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11118 Valid, 6646 Invalid, 848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 825 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 01:07:16,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19484 states. [2023-12-19 01:07:17,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19484 to 18056. [2023-12-19 01:07:17,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18056 states, 18054 states have (on average 1.3306746427384513) internal successors, (24024), 18055 states have internal predecessors, (24024), 0 states have call successors, (0), 0 states 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 01:07:17,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18056 states to 18056 states and 24024 transitions. [2023-12-19 01:07:17,246 INFO L78 Accepts]: Start accepts. Automaton has 18056 states and 24024 transitions. Word has length 98 [2023-12-19 01:07:17,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:07:17,247 INFO L495 AbstractCegarLoop]: Abstraction has 18056 states and 24024 transitions. [2023-12-19 01:07:17,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 8.0625) internal successors, (258), 32 states have internal predecessors, (258), 0 states have call successors, (0), 0 states 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 01:07:17,247 INFO L276 IsEmpty]: Start isEmpty. Operand 18056 states and 24024 transitions. [2023-12-19 01:07:17,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-19 01:07:17,248 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:07:17,248 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:07:17,253 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 01:07:17,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-19 01:07:17,450 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:07:17,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:07:17,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1833336139, now seen corresponding path program 1 times [2023-12-19 01:07:17,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:07:17,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593150187] [2023-12-19 01:07:17,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:07:17,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:07:17,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:07:17,795 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:07:17,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:07:17,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593150187] [2023-12-19 01:07:17,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593150187] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:07:17,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1212219404] [2023-12-19 01:07:17,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:07:17,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:07:17,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:07:17,797 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 01:07:17,816 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 01:07:17,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:07:17,933 INFO L262 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-19 01:07:17,938 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:07:18,352 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:07:18,353 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 01:07:19,057 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:07:19,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1212219404] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 01:07:19,057 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 01:07:19,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2023-12-19 01:07:19,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787817871] [2023-12-19 01:07:19,058 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 01:07:19,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-19 01:07:19,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:07:19,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-19 01:07:19,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2023-12-19 01:07:19,059 INFO L87 Difference]: Start difference. First operand 18056 states and 24024 transitions. Second operand has 25 states, 25 states have (on average 9.96) internal successors, (249), 24 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:07:21,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:07:21,932 INFO L93 Difference]: Finished difference Result 79166 states and 103190 transitions. [2023-12-19 01:07:21,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-19 01:07:21,933 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 9.96) internal successors, (249), 24 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2023-12-19 01:07:21,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:07:21,992 INFO L225 Difference]: With dead ends: 79166 [2023-12-19 01:07:21,992 INFO L226 Difference]: Without dead ends: 62976 [2023-12-19 01:07:22,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 552 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=588, Invalid=2274, Unknown=0, NotChecked=0, Total=2862 [2023-12-19 01:07:22,001 INFO L413 NwaCegarLoop]: 1524 mSDtfsCounter, 20780 mSDsluCounter, 5164 mSDsCounter, 0 mSdLazyCounter, 867 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20780 SdHoareTripleChecker+Valid, 6688 SdHoareTripleChecker+Invalid, 892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 01:07:22,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20780 Valid, 6688 Invalid, 892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 867 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 01:07:22,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62976 states. [2023-12-19 01:07:23,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62976 to 59762. [2023-12-19 01:07:23,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59762 states, 59760 states have (on average 1.2863788487282464) internal successors, (76874), 59761 states have internal predecessors, (76874), 0 states have call successors, (0), 0 states 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 01:07:23,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59762 states to 59762 states and 76874 transitions. [2023-12-19 01:07:23,843 INFO L78 Accepts]: Start accepts. Automaton has 59762 states and 76874 transitions. Word has length 98 [2023-12-19 01:07:23,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:07:23,844 INFO L495 AbstractCegarLoop]: Abstraction has 59762 states and 76874 transitions. [2023-12-19 01:07:23,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 9.96) internal successors, (249), 24 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:07:23,844 INFO L276 IsEmpty]: Start isEmpty. Operand 59762 states and 76874 transitions. [2023-12-19 01:07:23,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-19 01:07:23,845 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:07:23,846 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:07:23,851 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 01:07:24,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:07:24,047 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:07:24,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:07:24,047 INFO L85 PathProgramCache]: Analyzing trace with hash -2001529393, now seen corresponding path program 1 times [2023-12-19 01:07:24,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:07:24,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364927532] [2023-12-19 01:07:24,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:07:24,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:07:24,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:07:24,430 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:07:24,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:07:24,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364927532] [2023-12-19 01:07:24,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364927532] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:07:24,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206943523] [2023-12-19 01:07:24,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:07:24,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:07:24,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:07:24,432 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 01:07:24,433 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 01:07:24,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:07:24,541 INFO L262 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-19 01:07:24,544 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:07:25,099 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:07:25,099 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 01:07:25,937 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:07:25,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [206943523] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 01:07:25,937 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 01:07:25,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2023-12-19 01:07:25,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049393666] [2023-12-19 01:07:25,938 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 01:07:25,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-19 01:07:25,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:07:25,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-19 01:07:25,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2023-12-19 01:07:25,939 INFO L87 Difference]: Start difference. First operand 59762 states and 76874 transitions. Second operand has 25 states, 25 states have (on average 11.36) internal successors, (284), 24 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:07:30,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:07:30,736 INFO L93 Difference]: Finished difference Result 183037 states and 234101 transitions. [2023-12-19 01:07:30,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-19 01:07:30,736 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 11.36) internal successors, (284), 24 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2023-12-19 01:07:30,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:07:30,870 INFO L225 Difference]: With dead ends: 183037 [2023-12-19 01:07:30,870 INFO L226 Difference]: Without dead ends: 127549 [2023-12-19 01:07:30,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 589 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=667, Invalid=2413, Unknown=0, NotChecked=0, Total=3080 [2023-12-19 01:07:30,893 INFO L413 NwaCegarLoop]: 1545 mSDtfsCounter, 22066 mSDsluCounter, 6745 mSDsCounter, 0 mSdLazyCounter, 1173 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22066 SdHoareTripleChecker+Valid, 8290 SdHoareTripleChecker+Invalid, 1205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 01:07:30,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22066 Valid, 8290 Invalid, 1205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1173 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 01:07:30,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127549 states. [2023-12-19 01:07:34,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127549 to 109883. [2023-12-19 01:07:34,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109883 states, 109881 states have (on average 1.2535652205567842) internal successors, (137743), 109882 states have internal predecessors, (137743), 0 states have call successors, (0), 0 states 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 01:07:35,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109883 states to 109883 states and 137743 transitions. [2023-12-19 01:07:35,112 INFO L78 Accepts]: Start accepts. Automaton has 109883 states and 137743 transitions. Word has length 99 [2023-12-19 01:07:35,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:07:35,112 INFO L495 AbstractCegarLoop]: Abstraction has 109883 states and 137743 transitions. [2023-12-19 01:07:35,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 11.36) internal successors, (284), 24 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:07:35,112 INFO L276 IsEmpty]: Start isEmpty. Operand 109883 states and 137743 transitions. [2023-12-19 01:07:35,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-19 01:07:35,115 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:07:35,115 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:07:35,127 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-19 01:07:35,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-19 01:07:35,324 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:07:35,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:07:35,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1900450337, now seen corresponding path program 1 times [2023-12-19 01:07:35,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:07:35,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313600935] [2023-12-19 01:07:35,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:07:35,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:07:35,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:07:35,789 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:07:35,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:07:35,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313600935] [2023-12-19 01:07:35,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313600935] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:07:35,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2007266989] [2023-12-19 01:07:35,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:07:35,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:07:35,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:07:35,793 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 01:07:35,795 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 01:07:35,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:07:35,938 INFO L262 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-19 01:07:35,941 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:07:37,045 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:07:37,045 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 01:07:37,936 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:07:37,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2007266989] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 01:07:37,936 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 01:07:37,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 30 [2023-12-19 01:07:37,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300542071] [2023-12-19 01:07:37,937 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 01:07:37,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-19 01:07:37,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:07:37,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-19 01:07:37,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=773, Unknown=0, NotChecked=0, Total=870 [2023-12-19 01:07:37,938 INFO L87 Difference]: Start difference. First operand 109883 states and 137743 transitions. Second operand has 30 states, 30 states have (on average 9.666666666666666) internal successors, (290), 30 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 01:07:47,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:07:47,946 INFO L93 Difference]: Finished difference Result 336197 states and 415760 transitions. [2023-12-19 01:07:47,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-19 01:07:47,947 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 9.666666666666666) internal successors, (290), 30 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 101 [2023-12-19 01:07:47,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:07:48,432 INFO L225 Difference]: With dead ends: 336197 [2023-12-19 01:07:48,432 INFO L226 Difference]: Without dead ends: 240578 [2023-12-19 01:07:48,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1408 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1110, Invalid=4742, Unknown=0, NotChecked=0, Total=5852 [2023-12-19 01:07:48,491 INFO L413 NwaCegarLoop]: 1539 mSDtfsCounter, 12100 mSDsluCounter, 15857 mSDsCounter, 0 mSdLazyCounter, 1607 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12100 SdHoareTripleChecker+Valid, 17396 SdHoareTripleChecker+Invalid, 1639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 01:07:48,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12100 Valid, 17396 Invalid, 1639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1607 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 01:07:48,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240578 states. [2023-12-19 01:07:56,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240578 to 205202. [2023-12-19 01:07:56,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205202 states, 205200 states have (on average 1.2361403508771929) internal successors, (253656), 205201 states have internal predecessors, (253656), 0 states have call successors, (0), 0 states 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 01:07:56,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205202 states to 205202 states and 253656 transitions. [2023-12-19 01:07:56,643 INFO L78 Accepts]: Start accepts. Automaton has 205202 states and 253656 transitions. Word has length 101 [2023-12-19 01:07:56,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:07:56,644 INFO L495 AbstractCegarLoop]: Abstraction has 205202 states and 253656 transitions. [2023-12-19 01:07:56,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 9.666666666666666) internal successors, (290), 30 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 01:07:56,644 INFO L276 IsEmpty]: Start isEmpty. Operand 205202 states and 253656 transitions. [2023-12-19 01:07:56,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-19 01:07:56,648 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:07:56,648 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:07:56,654 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-19 01:07:56,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:07:56,849 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:07:56,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:07:56,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1425391795, now seen corresponding path program 1 times [2023-12-19 01:07:56,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:07:56,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435424203] [2023-12-19 01:07:56,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:07:56,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:07:56,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:07:57,947 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:07:57,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:07:57,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435424203] [2023-12-19 01:07:57,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435424203] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:07:57,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156665974] [2023-12-19 01:07:57,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:07:57,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:07:57,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:07:57,957 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 01:07:57,960 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 01:07:58,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:07:58,107 INFO L262 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 62 conjunts are in the unsatisfiable core [2023-12-19 01:07:58,110 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:08:31,250 WARN L293 SmtUtils]: Spent 5.46s on a formula simplification. DAG size of input: 121 DAG size of output: 98 (called from [L 183] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne) [2023-12-19 01:08:50,149 WARN L293 SmtUtils]: Spent 5.45s on a formula simplification. DAG size of input: 94 DAG size of output: 78 (called from [L 183] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne) [2023-12-19 01:09:12,628 WARN L293 SmtUtils]: Spent 8.72s on a formula simplification. DAG size of input: 121 DAG size of output: 98 (called from [L 183] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne) [2023-12-19 01:09:31,728 WARN L293 SmtUtils]: Spent 5.49s on a formula simplification. DAG size of input: 129 DAG size of output: 77 (called from [L 183] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne) [2023-12-19 01:11:04,558 WARN L293 SmtUtils]: Spent 40.49s on a formula simplification. DAG size of input: 477 DAG size of output: 295 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-19 01:11:43,187 WARN L293 SmtUtils]: Spent 12.37s on a formula simplification that was a NOOP. DAG size: 295 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-19 01:15:31,625 WARN L293 SmtUtils]: Spent 12.40s on a formula simplification that was a NOOP. DAG size: 295 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-19 01:16:15,589 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:16:15,589 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 01:16:29,770 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:16:29,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156665974] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 01:16:29,770 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 01:16:29,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 34, 38] total 80 [2023-12-19 01:16:29,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104566753] [2023-12-19 01:16:29,770 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 01:16:29,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2023-12-19 01:16:29,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:16:29,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2023-12-19 01:16:29,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=762, Invalid=5558, Unknown=0, NotChecked=0, Total=6320 [2023-12-19 01:16:29,774 INFO L87 Difference]: Start difference. First operand 205202 states and 253656 transitions. Second operand has 80 states, 80 states have (on average 3.4625) internal successors, (277), 80 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:17:10,641 WARN L293 SmtUtils]: Spent 24.31s on a formula simplification. DAG size of input: 467 DAG size of output: 334 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-19 01:17:34,095 WARN L293 SmtUtils]: Spent 22.31s on a formula simplification. DAG size of input: 401 DAG size of output: 339 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-19 01:17:54,138 WARN L293 SmtUtils]: Spent 18.87s on a formula simplification. DAG size of input: 401 DAG size of output: 339 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Received shutdown request... [2023-12-19 01:20:21,304 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 01:20:21,304 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 01:20:21,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 212 states. [2023-12-19 01:20:21,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 288 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31971 ImplicationChecksByTransitivity, 300.3s TimeCoverageRelationStatistics Valid=14816, Invalid=68994, Unknown=0, NotChecked=0, Total=83810 [2023-12-19 01:20:21,323 INFO L413 NwaCegarLoop]: 322 mSDtfsCounter, 13927 mSDsluCounter, 6375 mSDsCounter, 0 mSdLazyCounter, 5678 mSolverCounterSat, 290 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13927 SdHoareTripleChecker+Valid, 6697 SdHoareTripleChecker+Invalid, 5968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 290 IncrementalHoareTripleChecker+Valid, 5678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2023-12-19 01:20:21,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13927 Valid, 6697 Invalid, 5968 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [290 Valid, 5678 Invalid, 0 Unknown, 0 Unchecked, 10.5s Time] [2023-12-19 01:20:21,325 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-19 01:20:21,332 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-19 01:20:21,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:20:21,533 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (205202states) and FLOYD_HOARE automaton (currently 212 states, 80 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-8-13-2-2-2-2-2-2-1 term,while SimplifyDDA2 was simplifying 12 xjuncts wrt. a ∧-7-13-3-3-2-2-2-2-1 context. [2023-12-19 01:20:21,535 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-19 01:20:21,538 INFO L445 BasicCegarLoop]: Path program 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] [2023-12-19 01:20:21,541 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-19 01:20:21,543 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.12 01:20:21 BoogieIcfgContainer [2023-12-19 01:20:21,543 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-19 01:20:21,545 INFO L158 Benchmark]: Toolchain (without parser) took 831829.11ms. Allocated memory was 205.5MB in the beginning and 6.6GB in the end (delta: 6.4GB). Free memory was 145.1MB in the beginning and 2.7GB in the end (delta: -2.5GB). Peak memory consumption was 3.8GB. Max. memory is 8.0GB. [2023-12-19 01:20:21,548 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 205.5MB. Free memory is still 163.3MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 01:20:21,548 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1749.00ms. Allocated memory was 205.5MB in the beginning and 337.6MB in the end (delta: 132.1MB). Free memory was 144.8MB in the beginning and 232.0MB in the end (delta: -87.3MB). Peak memory consumption was 96.9MB. Max. memory is 8.0GB. [2023-12-19 01:20:21,548 INFO L158 Benchmark]: Boogie Procedure Inliner took 396.38ms. Allocated memory is still 337.6MB. Free memory was 232.0MB in the beginning and 242.5MB in the end (delta: -10.5MB). Peak memory consumption was 61.3MB. Max. memory is 8.0GB. [2023-12-19 01:20:21,548 INFO L158 Benchmark]: Boogie Preprocessor took 439.52ms. Allocated memory is still 337.6MB. Free memory was 242.5MB in the beginning and 197.4MB in the end (delta: 45.1MB). Peak memory consumption was 80.7MB. Max. memory is 8.0GB. [2023-12-19 01:20:21,549 INFO L158 Benchmark]: RCFGBuilder took 4132.93ms. Allocated memory was 337.6MB in the beginning and 742.4MB in the end (delta: 404.8MB). Free memory was 197.4MB in the beginning and 444.9MB in the end (delta: -247.4MB). Peak memory consumption was 158.9MB. Max. memory is 8.0GB. [2023-12-19 01:20:21,549 INFO L158 Benchmark]: TraceAbstraction took 825104.70ms. Allocated memory was 742.4MB in the beginning and 6.6GB in the end (delta: 5.8GB). Free memory was 444.4MB in the beginning and 2.7GB in the end (delta: -2.2GB). Peak memory consumption was 3.6GB. Max. memory is 8.0GB. [2023-12-19 01:20:21,550 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 205.5MB. Free memory is still 163.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1749.00ms. Allocated memory was 205.5MB in the beginning and 337.6MB in the end (delta: 132.1MB). Free memory was 144.8MB in the beginning and 232.0MB in the end (delta: -87.3MB). Peak memory consumption was 96.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 396.38ms. Allocated memory is still 337.6MB. Free memory was 232.0MB in the beginning and 242.5MB in the end (delta: -10.5MB). Peak memory consumption was 61.3MB. Max. memory is 8.0GB. * Boogie Preprocessor took 439.52ms. Allocated memory is still 337.6MB. Free memory was 242.5MB in the beginning and 197.4MB in the end (delta: 45.1MB). Peak memory consumption was 80.7MB. Max. memory is 8.0GB. * RCFGBuilder took 4132.93ms. Allocated memory was 337.6MB in the beginning and 742.4MB in the end (delta: 404.8MB). Free memory was 197.4MB in the beginning and 444.9MB in the end (delta: -247.4MB). Peak memory consumption was 158.9MB. Max. memory is 8.0GB. * TraceAbstraction took 825104.70ms. Allocated memory was 742.4MB in the beginning and 6.6GB in the end (delta: 5.8GB). Free memory was 444.4MB in the beginning and 2.7GB in the end (delta: -2.2GB). Peak memory consumption was 3.6GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 513]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 513). Cancelled while NwaCegarLoop was constructing difference of abstraction (205202states) and FLOYD_HOARE automaton (currently 212 states, 80 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-8-13-2-2-2-2-2-2-1 term,while SimplifyDDA2 was simplifying 12 xjuncts wrt. a ∧-7-13-3-3-2-2-2-2-1 context. - TimeoutResultAtElement [Line: 672]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 672). Cancelled while NwaCegarLoop was constructing difference of abstraction (205202states) and FLOYD_HOARE automaton (currently 212 states, 80 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-8-13-2-2-2-2-2-2-1 term,while SimplifyDDA2 was simplifying 12 xjuncts wrt. a ∧-7-13-3-3-2-2-2-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 849 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 825.0s, OverallIterations: 31, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 271.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 168544 SdHoareTripleChecker+Valid, 17.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 168544 mSDsluCounter, 125182 SdHoareTripleChecker+Invalid, 15.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 78343 mSDsCounter, 1141 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 14926 IncrementalHoareTripleChecker+Invalid, 16067 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1141 mSolverCounterUnsat, 46839 mSDtfsCounter, 14926 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1790 GetRequests, 1103 SyntacticMatches, 0 SemanticMatches, 686 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36255 ImplicationChecksByTransitivity, 309.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=205202occurred in iteration=30, InterpolantAutomatonStates: 305, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 25.1s AutomataMinimizationTime, 30 MinimizatonAttempts, 204355 StatesRemovedByMinimization, 27 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 525.4s InterpolantComputationTime, 2993 NumberOfCodeBlocks, 2993 NumberOfCodeBlocksAsserted, 37 NumberOfCheckSat, 3545 ConstructedInterpolants, 0 QuantifiedInterpolants, 96963 SizeOfPredicates, 45 NumberOfNonLiveVariables, 2873 ConjunctsInSsa, 142 ConjunctsInUnsatCore, 43 InterpolantComputations, 25 PerfectInterpolantSequences, 334/498 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown